; File: p3ECO.txt

; This file is based almost entirely upon the file ECOMast.txt that has 
; been lovingly cared for and tended by Paul Onstad. Both Franz Hemmer
; and J.E.H.Shaw also contributed greatly to the original work. I have
; included Paul Onstad's introduction and notes below.
; --------------------------------------------------------------------
; Paul Onstad
; This line translation based upon a consolidated version by Franz Hemmer
; <franz@hemsoft.ping.dk> which was in coordinate notation.
;
; J.E.H.Shaw (Ewart Shaw) <strgh@mimosa.csv.warwick.ac.uk> created the
; original list which was the starting point for Hemmer.
;
; Opening descriptions are from many sources including "Unorthodox
; Openings" and "The Oxford Companion to Chess."
;
; Translation to standard algebraic and the addition of approximately
; 750 lines by Paul Onstad <ponstad@sihope.com>

; Notes, June 2001:
;
; Positions: 9281  Lines: 2717
;
; Previous additions were generally to resolve conflicts. In the past 
; month, approximately 100 lines were added to detail modern lines that
; tended to fall short--even though the short position was represented
; by the proper ECO code.
;
; line codes:
;   Volume A : C.A.
;   Volume B : ECO 1997 ISBN 86 7297 032 2
;   Volume C : ECO 1981
;   Volume D : ECO 1998 ISBN 86 7297 040 3
;   Volume E : ECO 1991 ISBN 86 7297 023 3

; Notes, May 2001:
;
; The "1/2" line terminators are a bit of an artifact but since I've used
; the asterisk for other purposes, they've been kept (in lieu of *).
; (Lines in this file can be displayed with chess reader, ChessU4.
; ECOClass uses this file to create its index for classifying PGN Games.)
;
; There are two sections to this file. The second are lines that are
; seldom played, or lines that have been superceded by longer lines. Very
; few Games will ever match to a position in the second section.
;
; The arrangement is by ECO code with the basic line determining the ECO
; on top. These should always be straight "book" lines. Following are
; other book lines--either extensions or subvariations--usually in the
; collating order of the notation string (where 'B' > 'b', etc.).
; Following the book lines may be "natural" lines. These are transposed
; openings and quite often the most common move order. However, they are
; not in the ECO volumes except as represented by their positions. Natural
; lines are necessary for position matching. Were they omitted, many Games
; which transpose would find no match, by position, in this file.
;
; Anyone spending time with chess classification will soon discover that
; there is no certain, Systematic approach that will simply and
; consistently place each Game played in a particular "bin." Some Advanced
; positions hover between a half-dozen different codes--spanning nearly
; every ECO volume. C-Volume classifications are the simplest and most
; consistent while A-Volume codes hit the other extreme. I have numerous
; notes in this document, pointing out the difficult and the unusual.
;
;
; Additions I have made are marked "*pwo" -Paul Onstad
;                                          http://www.sihope.com/~ponstad/
;


A00    Anderssen's Opening
1.a3 1/2

A00    Ware Opening: (Meadow Hay) 
1.a4 1/2

A00    Polish Opening: (Sokolsky/Orang-utan) 
1.b4 1/2

A00    Polish: Outflank Variation
1.b4 c6 1/2

A00    Sokolsky: 1...d5 ; *pwo add
1.b4 d5 2.Bb2 Bf5 1/2

A00    Sokolsky: ...e5 ...f6 ; *pwo 5/01 add (f6 seems inferior to 2...Bxb4, =/+)
1.b4 e5 2.Bb2 f6 3.e4 Bxb4 4.Bc4 Ne7 5.Qh5+ g6 6.Qh4 1/2

A00    Sokolsky: ...e5 ...Bxb4 ; *pwo add
1.b4 e5 2.Bb2 Bxb4 3.Bxe5 Nf6 4.c4 O-O 5.e3 1/2

A00    Polish: Tuebingen Variation
1.b4 Nh6 1/2

A00    Saragossa Opening
1.c3 1/2

A00    Mieses Opening
1.d3 1/2

A00    Van't Kruijs Opening
1.e3 1/2

A00    Amsterdam Attack
1.e3 e5 2.c4 d6 3.Nc3 Nc6 4.b3 Nf6 1/2

A00    Gedult's Opening
1.f3 1/2

A00    Benko's Opening
1.g3 1/2

A00    Trident Opening ; (subr fm A04,A36,B20) *pwo
1.g3 c5 1/2

A00    Reti: King's Indian Attack (...e5) ; *pwo
1.g3 d5 2.Bg2 e5 3.d3 Nf6 4.Nf3 Bd6 5.O-O c6 6.Nc3 1/2

A00    Benko's Opening ; (3.b3 or any non-Nf3; else A07) *pwo
1.g3 d5 2.Bg2 Nf6 3.b3 1/2

A00    English-KID Fianchetto ; (subtracts fm A20) *pwo
1.g3 e5 2.c4 Nf6 3.Bg2 1/2

A00    Reti: King's Indian Attack (...e5) ; *pwo
1.g3 e5 2.Bg2 d5 3.d3 Nf6 4.Nf3 Bd6 5.O-O O-O 6.Nc3 c6 1/2

A00    Benko's Opening: Reversed Alekhine
1.g3 e5 2.Nf3 1/2

A00    Lasker Simul Special
1.g3 h5 1/2

A00    Grob's Attack
1.g4 1/2

A00    Grob: Spike Attack
1.g4 d5 2.Bg2 c6 3.g5 1/2

A00    Clemenz Opening ;(Mead's-Basman's-de Klerk's) 
1.h3 1/2

A00    Kadas Opening ; (Desprez) *pwo, was: Anti-Borg (Desprez) Opening
1.h4 1/2

A00    Durkin's Attack
1.Na3 1/2

A00    Dunst Opening ;(Sleipner-Heinrichsen) 
1.Nc3 1/2

A00    Novosibirsk Opening
1.Nc3 c5 2.d4 cxd4 3.Qxd4 Nc6 4.Qh4 1/2

A00    Dunst Opening ;(Sleipner-Heinrichsen) 
1.Nc3 e5 1/2

A00    Amar Opening ; (Paris) 
1.Nh3 1/2

A01    Nimzovich-Larsen Attack
1.b3 1/2

A01    Nimzovich-Larsen Attack: English Variation
1.b3 c5 1/2

A01    Nimzovich-Larsen Attack: Classical Variation
1.b3 d5 1/2

A01    Nimzovich-Larsen Attack: Modern Variation
1.b3 e5 1/2

A01    Nimzovich-Larsen Attack: 1...e5 Main Line ; *pwo 6/01 add
1.b3 e5 2.Bb2 Nc6 3.e3 Nf6 4.Bb5 d6 1/2

A01/23 Nimzovich-Larsen Attack: Correspondence Line ; *pwo 6/01 add
1.b3 e5 2.Bb2 Nc6 3.e3 d5 4.Bb5 Bd6 5.f4 f6 1/2

A01    Nimzovich-Larsen Attack: Dutch Variation
1.b3 f5 1/2

A01    Nimzovich-Larsen Attack: Indian Variation
1.b3 Nf6 1/2

A02    Bird's Opening
1.f4 1/2

A02    Bird's: From Gambit: Lasker Variation
1.f4 e5 2.fxe5 d6 3.exd6 Bxd6 4.Nf3 g5 1/2

A02    Bird's Opening: Swiss Gambit
1.f4 f5 2.e4 fxe4 3.Nc3 Nf6 4.g4 1/2

A03    Bird's Opening
1.f4 d5 1/2

A03    Bird's Opening: Lasker Variation
1.f4 d5 2.Nf3 Nf6 3.e3 c5 1/2

A04    Reti Opening
1.Nf3 1/2

A04    Reti ;(plus English Symmetrical, KIA, KID, QGD, Closed Sicilian) Openings  *pwo 3/01 add catchall
1.Nf3 c5 2.g3 1/2

A04    Reti ; (plus English Symmetrical) *pwo 5/01 catchall
1.Nf3 c5 2.g3 Nc6 1/2

A04/11 Reti: King's Indian Attack: Neo-Closed Sicilian ; *pwo (subr fm A39, nat Line)
1.Nf3 c5 2.g3 Nc6 3.Bg2 g6 4.O-O Bg7 5.d3 d6 6.e4 e5 7.c3 Nge7 8.a3 O-O
9.b4 b6 10.Bb2 h6 11.Nbd2 1/2

A04    Reti Opening
1.Nf3 d6 1/2

A04    Reti: Wade Defense
1.Nf3 d6 2.e4 Bg4 1/2

A04/16 Reti: King's Indian Attack, Neo-Closed Sicilian ; A05/8 B20/1 B30/1 *pwo
1.Nf3 d6 2.e4 Nf6 3.d3 c5 4.g3 Nc6 5.Bg2 g6 6.O-O Bg7 7.c3 O-O 8.Nbd2 Rb8
1/2

A04    Reti ; (plus English, Dutch, Queen's Indian, & Sicilian) Openings *pwo 4/01 catchall
1.Nf3 e6 1/2

A04    Reti-Dutch
1.Nf3 f5 1/2

A04    Reti: Lisitsin Gambit Deferred
1.Nf3 f5 2.d3 Nf6 3.e4 1/2

A04    Reti: Pirc-Lisitsin Gambit
1.Nf3 f5 2.e4 1/2

A04    Reti-KID ; (add) *pwo
1.Nf3 g6 2.c4 Bg7 3.Nc3 Nf6 1/2

A04    Reti ; (plus KID, Pirc, Dutch) Openings *pwo 3/31 catchall
1.Nf3 g6 2.d4 Bg7 1/2

A04    Reti (with d4) ; (subr fm A40) *pwo
1.Nf3 g6 2.d4 Bg7 3.g3 c5 4.Bg2 cxd4 5.Nxd4 Nc6 6.Nb3 d6 7.O-O Nf6 8.Nc3 O-O
9.h3 1/2

A04    Reti: King's Indian Attack ; (subr fm A40) *pwo
1.Nf3 g6 2.g3 Bg7 3.Bg2 e5 4.O-O Nc6 5.e4 d6 6.d3 Nge7 7.c3 O-O 8.Nbd2 h6
9.b4 1/2

A04    Reti ; (plus English, Giuoco, Scotch, Ruy Lopez) Openings  *pwo 3/01 catchall
1.Nf3 Nc6 1/2

A04/11 Reti: King's Indian Attack: Neo-Closed Sicilian ; (nat Line) *pwo
1.e4 c5 2.Nf3 Nc6 3.d3 e6 4.g3 g6 5.Bg2 Bg7 6.O-O Nge7 (7.c3 O-O 8.Re1 d6
9.a3 e5) 1/2

A04    Reti: King's Indian Attack: Neo-Closed Sicilian ; (nat Line) *pwo
1.e4 c5 2.Nf3 Nc6 3.d3 g6 4.g3 Bg7 5.Bg2 (d6 6.O-O Nf6 7.Nbd2 O-O) 1/2

A05    Reti Opening
1.Nf3 Nf6 1/2

A05    Reti: Nimzovich-Larsen Attack ; *pwo 5/01 add
1.Nf3 Nf6 2.b3 1/2

A05    Reti: King's Indian Attack: Spassky's Variation
1.Nf3 Nf6 2.g3 b5 1/2

A05/03 Reti: King's Indian Attack: Eliskases Variation (2...b6) ; *pwo 4/01 add
1.Nf3 Nf6 2.g3 b6 3.Bg2 Bb7 4.O-O e6 5.d3 Be7 6.Nbd2 d5 7.e4 c5 8.Re1 Nc6
9.c3 O-O 10.Qe2 1/2

A05    Reti: King's Indian Attack
1.Nf3 Nf6 2.g3 g6 1/2

A05    Reti: King's Indian Attack: Reti-Smyslov Variation
1.Nf3 Nf6 2.g3 g6 3.b4 1/2

A05/08 Reti: King's Indian Attack: Neo-Closed Sicilian ; A04/16 B20/1 B30/1 *pwo
1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.O-O O-O 5.d3 d6 6.e4 c5 7.Nbd2 Nc6 8.c3 Ne8
1/2

A06    Reti Opening
1.Nf3 d5 1/2

A06/11 Reti: Nimzovich-Larsen Attack ; *pwo (natural Line)
1.Nf3 d5 2.b3 c5 3.e3 Nf6 4.Bb2 e6 5.c4 Nc6 6.cxd5 exd5 7.Bb5 1/2

A06/15 Reti: Nimzovich-Larsen Attack (...Bg4) ; *pwo (natural Line)
1.Nf3 d5 2.b3 Bg4 3.Bb2 Nf6 4.e3 Nbd7 5.Be2 e6 6.O-O Bd6 1/2

A06/11 Reti: Nimzovich-Larsen Attack ; (ext fm 2.b3) *pwo
1.Nf3 d5 2.b3 Nf6 3.Bb2 e6 4.c4 c5 5.e3 Nc6 1/2

A06/13 Reti: Nimzovich-Larsen Attack ; *pwo (natural Line)
1.Nf3 d5 2.b3 Nf6 3.Bb2 e6 4.e3 Bd6 5.Be2 Nbd7 6.d4 O-O 7.O-O 1/2

A06/02 Reti: Nimzovich-Larsen Attack (...Bf5) ; *pwo (natural Line)
1.Nf3 d5 2.b3 Nf6 3.Bb2 Bf5 4.g3 e6 5.Bg2 h6 6.O-O Be7 7.d3 O-O 8.Nbd2 Bh7
1/2

A06    Santasiere's Folly
1.Nf3 d5 2.b4 1/2

A06    Reti: Old Indian Attack
1.Nf3 d5 2.d3 1/2

A06    Reti: Nimzovich-Larsen Attack (...Bd7) ; *pwo 3/01 add, nat, out 1...c5
1.Nf3 c5 2.b3 Nf6 3.Bb2 d5 4.e3 Nc6 5.Bb5 Bd7 6.O-O 1/2

A07    Reti: King's Indian Attack (Barcza System)
1.Nf3 d5 2.g3 1/2

A07    Reti: King's Indian Attack (with...c5)
1.Nf3 d5 2.g3 c5 1/2

A07/14 Reti: King's Indian Attack: Yugoslav Variation ; (nat,subr fm A11) *pwo
1.Nf3 d5 2.g3 c6 3.b3 Bg4 4.Bg2 Nd7 5.Bb2 Ngf6 6.O-O e6 7.d3 Bd6 8.Nbd2 O-O
9.c4 Re8 10.Qc2 1/2

A07    Reti: King's Indian Attack: Pachman System
1.Nf3 d5 2.g3 g6 3.Bg2 Bg7 4.O-O e5 5.d3 Ne7 1/2

A07    Reti: King's Indian Attack: Keres Variation
1.Nf3 d5 2.g3 Bg4 3.Bg2 Nd7 1/2

A07    Reti: King's Indian Attack ; (nat; A07 catch all) *pwo
1.Nf3 d5 2.g3 Nf6 3.Bg2 1/2

A07    Reti: King's Indian Attack: Herringbone Variation ; *pwo
1.Nf3 d5 2.g3 Nf6 3.Bg2 c6 4.b3 Bf5 5.Bb2 e6 1/2

A07    Reti: King's Indian Attack: Yugoslav Variation
1.Nf3 d5 2.g3 Nf6 3.Bg2 c6 4.O-O Bg4 1/2

A07/05 Reti: King's Indian Attack (...Bf5) ; (add) *pwo (was A11)
1.Nf3 d5 2.g3 Nf6 3.Bg2 Bf5 1/2

A07/07 Reti: KIA, Neo-Gruenfeld ; (natural Line) *pwo (was A11)
1.Nf3 Nf6 2.g3 d5 3.Bg2 g6 1/2

A07/04 Reti: King's Indian Attack: Yugoslav Variation ; (natural Line) *pwo
1.g3 d5 2.Bg2 c6 3.Nf3 Bg4 4.d3 Nd7 5.Nbd2 e6 6.O-O Bd6 7.b3 1/2

A07    Reti: King's Indian Attack: Yugoslav Variation ; (natural Line) *pwo
1.g3 d5 2.Bg2 Nf6 3.Nf3 c6 4.d3 Bg4 (5.O-O Nbd7 6.Nbd2 e6 7.h3 Bh5 8.b3)
1/2

A07    Reti: King's Indian Attack: Petrosian Variation ; (natural Line) *pwo
1.g3 d5 2.Bg2 Nf6 3.Nf3 c6 4.O-O Bf5 5.d3 e6 6.Nbd2 1/2

A07    Reti: King's Indian Attack (with...c5) ; *pwo (natural Line)
1.g3 d5 2.Bg2 Nf6 3.Nf3 g6 4.O-O Bg7 5.d3 O-O 6.Nc3 c5 (7.Rb1 Nc6 8.a3 a5)
1/2

A07    Reti: King's Indian Attack: Yugoslav Variation (d3) ; *pwo 5/01 add, nat
1.g3 d5 2.Nf3 c6 3.Bg2 Nf6 4.O-O Bg4 5.d3 Nbd7 6.Nbd2 e5 7.e4 Bd6 1/2

A07    Reti: King's Indian Attack (...e5) ; *pwo (natural Line)
1.g3 e5 2.Bg2 d5 3.d3 Nc6 4.Nf3 Bg4 1/2

A08    Reti: King's Indian Attack
1.Nf3 d5 2.g3 c5 3.Bg2 1/2

A08    Reti: KIA ; (plus Queen's Pawn, Catalan, QGD, English) *pwo 3/01 catchall
1.Nf3 d5 2.g3 c5 3.Bg2 Nc6 1/2

A08/10 Reti: King's Indian Attack: French Variation ; *pwo
1.Nf3 d5 2.g3 c5 3.Bg2 Nc6 4.O-O e6 5.d3 Nf6 6.Nbd2 Be7 7.e4 O-O 8.Re1 b5
9.e5 Nd7 10.Nf1 b4 1/2

A08/10 Reti: King's Indian Attack: French Variation ; *pwo
1.e4 c5 2.Nf3 e6 3.d3 d5 4.Nbd2 Nf6 5.g3 Nc6 6.Bg2 Be7 7.O-O O-O 8.Re1 b5
9.e5 1/2

A08    Reti: King's Indian Attack ; *pwo (alt, natural Line)
1.e4 c5 2.Nf3 e6 3.d3 Nc6 4.g3 d5 5.Nbd2 Nf6 6.Bg2 Be7 7.O-O 1/2

A08    Reti: King's Indian Attack (6.Nbd2) ; *pwo 3/01 add, nat
1.g3 d5 2.Bg2 Nf6 3.Nf3 g6 4.O-O Bg7 5.d3 O-O 6.Nbd2 c5 7.e4 Nc6 8.c3 e5
9.exd5 Nxd5 10.Re1 1/2

A09    Reti Opening
1.Nf3 d5 2.c4 1/2

A09    Reti: Advance Variation
1.Nf3 d5 2.c4 d4 1/2

A09    Reti Accepted
1.Nf3 d5 2.c4 dxc4 1/2

A09    Reti Accepted: Keres Variation
1.Nf3 d5 2.c4 dxc4 3.e3 Be6 1/2

A10    English Opening
1.c4 1/2

A10    English Opening: 3.e4 ; *pwo 3/01 add
1.c4 b6 2.Nc3 e6 3.e4 Bb7 4.g3 f5 5.Bg2 Nf6 1/2

A10    English: ...b6 ; (add) *pwo
1.c4 b6 2.Nc3 Bb7 3.e4 e6 4.Nf3 Bb4 5.Bd3 Ne7 6.O-O O-O 7.Bc2 f5 1/2

A10    English: Anglo-Dutch Defense ; *pwo 3/01 add, lead in to A95
1.c4 f5 2.g3 e6 3.Nf3 Nf6 4.Bg2 Be7 5.O-O O-O 1/2

;A10    English: Anglo-Dutch Defense ; *pwo 3/01 add, lead in to A95
;1.c4 f5 2.g3 e6 3.Nf3 Nf6 4.Bg2 Be7 5.O-O O-O 6.Nc3 d5 1/2

A10/08 English: Anglo-Dutch Defense ; *pwo (also A26/03 & A21/11)
1.c4 f5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.e4 Nc6 7.Nge2 1/2

A10    English: Anglo-Dutch Defense ; *pwo 3/01 add, same as above (natural move order)
1.c4 f5 2.Nf3 Nf6 3.Nc3 e6 4.g3 Be7 5.Bg2 O-O 6.O-O d5 1/2

A10    English Opening
1.c4 g6 1/2

A10    English: Adorjan Defense
1.c4 g6 2.e4 e5 1/2

A10    English Opening ; (subr fm A21) *pwo
1.c4 g6 2.Nc3 Bg7 3.g3 1/2

A10    Robatsch Defense ; *pwo (had been "English"), subr fm B06
1.e4 g6 2.d4 d6 1/2

A10    Robatsch/Reti ; *pwo 5/01 add, nat
1.e4 g6 2.Nc3 Bg7 3.g3 d6 4.Bg2 e5 5.d3 Ne7 1/2

;A10    English: Anglo-Dutch Defense ; *pwo 3/01 add, same as previous (natural move order)
;1.Nf3 f5 2.g3 Nf6 3.Bg2 e6 4.O-O Be7 5.c4 O-O 1/2

A11    English: Caro-Kann Defensive System
1.c4 c6 1/2

A11    English: Caro-Kann Defensive System ; (add) *pwo
1.c4 c6 2.Nf3 d5 3.b3 Nf6 4.g3 g6 1/2

A11    English: Caro-Kann Defensive System ; (add) *pwo
1.c4 c6 2.Nf3 d5 3.e3 1/2

A11    English ; (plus Gruenfeld, QGD, Slav) *pwo 5/01 add, catchall
1.c4 c6 2.Nf3 d5 3.e3 Nf6 1/2

A11    English ; (plus Gruenfeld & QGD) *pwo 5/01 add, catchall
1.c4 c6 2.Nf3 d5 3.e3 Nf6 4.Nc3 1/2

A11    English: Caro-Kann Defensive System ; (add) *pwo
1.c4 c6 2.Nf3 d5 3.Qc2 1/2

A11    English: Caro-Kann Defensive System ; (add) *pwo
1.c4 Nf6 2.Nf3 g6 3.b3 Bg7 4.Bb2 O-O 5.g3 c6 6.Bg2 d5 1/2

A11    English: Caro-Kann/KIA Yugoslav ; (nat Line) *pwo See also A07
1.Nf3 d5 2.g3 c6 3.Bg2 Bg4 4.c4 e6 5.cxd5 exd5 6.O-O Nd7 7.d3 Ngf6 1/2

A11    English: Caro-Kann Defensive System ; (natural Line) *pwo
1.Nf3 d5 2.g3 Nf6 3.Bg2 c6 4.c4 1/2

A11    English: Caro-Kann Defensive System ; (natural Line) *pwo
1.Nf3 d5 2.g3 Nf6 3.Bg2 c6 4.O-O Bg4 5.c4 1/2

A12    English: Caro-Kann Defensive System
1.c4 c6 2.Nf3 d5 3.b3 1/2

A12    English: Caro-Kann Defensive System: Bogolyubov Variation
1.c4 c6 2.Nf3 d5 3.b3 Bg4 1/2

A12    English: London Defensive System
1.c4 c6 2.Nf3 d5 3.b3 Nf6 4.g3 Bf5 1/2

A12/18 English: Torre Defensive System ; (ext fm 4...Bg4; subr fm A07) *pwo
1.c4 c6 2.Nf3 d5 3.b3 Nf6 4.g3 Bg4 5.Bg2 e6 6.Bb2 Nbd7 7.O-O Bd6 8.d3 O-O
9.Nbd2 Qe7 10.a3 a5 11.Qc2 e5 12.e4 dxe4 13.dxe4 Rfd8 14.h3 Bh5 15.Nh4 Bg6
1/2

A12    English: Caro-Kann Defensive System
1.c4 c6 2.Nf3 d5 3.b3 Nf6 4.Bb2 1/2

A12    English: New York (London) Defensive System
1.c4 c6 2.Nf3 d5 3.b3 Nf6 4.Bb2 Bf5 1/2

A12    English: Capablanca's Variation
1.c4 c6 2.Nf3 d5 3.b3 Nf6 4.Bb2 Bg4 1/2

A12    English: Bled Variation ; (add) *pwo
1.Nf3 d5 2.b3 Nf6 3.Bb2 g6 4.e3 Bg7 5.c4 c6 (6.d4 O-O 7.Be2 Re8) 1/2

A13    English Opening
1.c4 e6 1/2

A13    English: Kurajica Exchange ; (subr fm E03) *pwo
1.c4 e6 2.g3 d5 3.Bg2 c6 4.Qc2 dxc4 (5.Qxc4 b5 6.Qc2 Bb7) 1/2

A13    English: Neo-Catalan Open ; (subr fm E03) *pwo
1.c4 e6 2.g3 d5 3.Bg2 Nf6 4.Nf3 dxc4 5.Qa4+ Nbd7 6.Qxc4 c5 (7.d4 a6
8.Qc2 cxd4) 1/2

A13    English ; (plus QGD) *pwo 5/01 add, catchall
1.c4 e6 2.Nc3 1/2

A13    English Opening: Agincourt Variation
1.c4 e6 2.Nf3 d5 1/2

A13    English: Wimpey System
1.c4 e6 2.Nf3 d5 3.b3 Nf6 4.Bb2 c5 5.e3 1/2

A13    English Opening: Agincourt Variation
1.c4 e6 2.Nf3 d5 3.g3 1/2

A13    English: Kurajica Defense
1.c4 e6 2.Nf3 d5 3.g3 c6 1/2

A13    English: Neo-Catalan
1.c4 e6 2.Nf3 d5 3.g3 Nf6 1/2

A13    English: Neo-Catalan Open ; (ext fm 4...dxc4) *pwo
1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 dxc4 5.Qa4+ Nbd7 1/2

A13    English Opening ; (incl. Catalan, QGD, & Queen's Indian) *pwo 3/01 catchall
1.c4 e6 2.Nf3 Nf6 3.g3 1/2

A13    English: Romanishin Gambit
1.c4 e6 2.Nf3 Nf6 3.g3 a6 4.Bg2 b5 1/2

A13    English: Neo-Tarrasch ; (subr fm D41) *pwo
1.c4 Nf6 2.Nf3 e6 3.g3 c5 4.Bg2 d5 5.O-O Nc6 (6.d4 Be7 7.cxd5 Nxd5) 1/2

A14    English: Neo-Catalan Declined
1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O 1/2

A14    English: Symmetrical: Keres Defense
1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O c5 6.cxd5 Nxd5 7.Nc3 Nc6 1/2

A14    English: Neo-Catalan, with b3 ; *pwo 4/01 add, nat
1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.b3 Be7 5.Bg2 O-O 6.O-O c5 7.Bb2 Nc6 8.e3 d4
9.exd4 cxd4 10.Re1 Ne8 11.d3 f6 12.Ba3 e5 1/2

;A14    English: Symmetrical: Hedgehog (g3...e6, b3) ; (add) *pwo (picks up odd A14 Lines)
;1.c4 e6 2.Nf3 d5 3.b3 Nf6 4.g3 c5 5.Bg2 Be7 6.O-O O-O 7.Bb2 b6 8.e3 Bb7
;9.Nc3 1/2

A14/11 English: Symmetrical: Hedgehog ; (natural Line, see A30) *pwo
1.Nf3 Nf6 2.c4 c5 3.g3 b6 4.Bg2 Bb7 5.b3 e6 6.O-O Be7 7.Bb2 O-O 8.Nc3 d5
9.e3 1/2

A15    English: 1...Nf6 ; (Anglo-Indian Defense)
1.c4 Nf6 1/2

A15/01 English: Neo-Catalan ; *pwo 4/01 add catchall
1.c4 Nf6 2.g3 e6 3.Bg2 d5 1/2

A15    English Opening
1.c4 Nf6 2.Nf3 1/2

;A15    English Opening ; (subr fm A11) *pwo
;1.c4 Nf6 2.Nf3 g6 3.b3 Bg7 4.Bb2 O-O 5.g3 (c6 6.Bg2 d5) 1/2

A15    English: ; (Gruenfeld, King's Indian) *pwo 3/01 add, the new way of labeling these short Lines of multiple Openings
1.c4 Nf6 2.Nf3 g6 3.Nc3 1/2

;A15    English: Bremen ; (subr fm A24) *pwo
;1.Nf3 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 (O-O 5.O-O d6 6.Nc3 e5 7.d3 c6 8.Rb1 a5)
;1/2

A16    English Opening
1.c4 Nf6 2.Nc3 1/2

A16    English: Anglo-Gruenfeld: Czech Defense
1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.g3 g6 5.Bg2 Nb6 1/2

A16    English: Anglo-Gruenfeld: Smyslov Defense
1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.g3 g6 5.Bg2 Nxc3 1/2

A16    English: Anglo-Gruenfeld Defense ; (ext...g6 5.e3) *pwo
1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.Nf3 g6 5.e3 1/2

A16    English: Anglo-Gruenfeld Defense: Korchnoi Variation
1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.Nf3 g6 5.g3 Bg7 6.Bg2 e5 1/2

A16    English: Anglo-Gruenfeld: (without...d5) ; (subr fm A26) *pwo
1.c4 Nf6 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O 5.d3 d6 6.Rb1 Nc6 7.Nf3 e5 8.O-O a5
9.a3 h6 (10.b4 axb4 11.axb4) 1/2

A16    English: Anglo-Gruenfeld Defense: 3...d5 ; *pwo 3/01 add, nat
1.c4 Nf6 2.Nf3 g6 3.Nc3 d5 4.cxd5 Nxd5 5.Qa4+ Bd7 6.Qh4 Nxc3 7.dxc3 Nc6
8.e4 e5 9.Bg5 Be7 10.Bc4 h6 11.Bxe7 1/2

;A16/02 English: Anglo-Gruenfeld: Bremen ; (subr fm A24, nat) *pwo
;1.Nf3 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O d6 6.Nc3 (e5 7.d3 c6 8.Rb1 a5)
;1/2

A17    English Opening
1.c4 Nf6 2.Nc3 e6 1/2

A17    English: Queens Indian Formation
1.c4 Nf6 2.Nc3 e6 3.Nf3 b6 1/2

A17    English: Queens Indian: Romanishin Variation
1.c4 Nf6 2.Nc3 e6 3.Nf3 b6 4.e4 Bb7 5.Bd3 1/2

A17/02 English: Queens Indian Formation: (postponed d4) ; *pwo (ext)
1.c4 Nf6 2.Nc3 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Re1 1/2

A17    English: Nimzo-English Opening
1.c4 Nf6 2.Nc3 e6 3.Nf3 Bb4 1/2

A18    English: Mikenas-Carls Variation
1.c4 Nf6 2.Nc3 e6 3.e4 1/2

A18    English: Mikenas-Carls: Flohr Variation
1.c4 Nf6 2.Nc3 e6 3.e4 d5 4.e5 1/2

A19    English: Mikenas-Carls: Sicilian Variation
1.c4 Nf6 2.Nc3 e6 3.e4 c5 1/2

A20    English Opening ; (subr fm A00) *pwo
1.c4 e5 2.g3 1/2

A20    English: Modern Nimzovich ; (subr fm A00) *pwo
1.c4 e5 2.g3 Nf6 3.Bg2 d5 4.cxd5 Nxd5 5.Nf3 Nc6 6.O-O 1/2

A20    English: Nimzovich: Flohr Variation
1.c4 e5 2.Nf3 e4 1/2

A20/04 English: Decoy Line ; (add) *pwo (picks up common odd Lines)
1.g3 e5 2.c4 Nf6 3.Bg2 c6 4.d4 exd4 5.Qxd4 d5 6.Nf3 Be7 7.cxd5 cxd5
8.O-O Nc6 9.Qa4 O-O 10.Nc3 1/2

A21    English Opening
1.c4 e5 2.Nc3 1/2

A21    English: Keres Variation
1.c4 e5 2.Nc3 d6 3.g3 c6 1/2

A21    English: Troeger Defense
1.c4 e5 2.Nc3 d6 3.g3 Be6 4.Bg2 Nc6 1/2

A21    English Opening
1.c4 e5 2.Nc3 d6 3.Nf3 1/2

A21    English: Kramnik-Shirov Counter-Attack
1.c4 e5 2.Nc3 Bb4 1/2

A21/12 English Opening ; *pwo, natural
1.c4 g6 2.Nc3 Bg7 3.g3 e5 4.Bg2 d6 5.d3 f5 6.Nf3 Nf6 7.O-O 1/2

A21    English: Closed: Old Indian Formation ; (subr fm A26, natural) *pwo
1.d4 d6 2.c4 e5 3.Nf3 e4 4.Ng5 f5 5.Nc3 c6 (6.Nh3 Be7 7.g3) 1/2

A22    English Opening
1.c4 e5 2.Nc3 Nf6 1/2

A22    English Opening (e4) ; *pwo 3/01 add; footnote 1 from C20
1.c4 e5 2.Nc3 Nf6 3.e4 1/2

A22    English: Carls' Bremen System
1.c4 e5 2.Nc3 Nf6 3.g3 1/2

A22    English: Bremen: Smyslov System
1.c4 e5 2.Nc3 Nf6 3.g3 Bb4 1/2

A22    English: Bellon Gambit
1.c4 e5 2.Nc3 Nf6 3.Nf3 e4 4.Ng5 b5 1/2

A23    English: Bremen System: Keres Variation
1.c4 e5 2.Nc3 Nf6 3.g3 c6 1/2

A24    English: Bremen System: (with...g6)
1.c4 e5 2.Nc3 Nf6 3.g3 g6 1/2

A24    English: Bremen: Modern Line ; (subr fm A16) *pwo
1.c4 Nf6 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O 5.d3 d6 (6.Rb1 Nc6 7.Nf3 e5 8.O-O a5
9.a3 h6) 1/2

A24    English: Bremen: Modern Line ; (add) *pwo
1.Nf3 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O d6 6.Nc3 e5 7.d3 c6 8.Rb1 a5
1/2

A25    English: Sicilian Reversed
1.c4 e5 2.Nc3 Nc6 1/2

A25    English: Closed System
1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 1/2

A25    English: Closed System: (without...d6)
1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 1/2

A25    English: Closed: Hort Variation
1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3 d6 6.Nge2 Be6 1/2

A25    English: Closed: Taimanov Variation
1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3 d6 6.Nge2 Nh6 1/2

A25    English: Closed: (5.Rb1)
1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Rb1 1/2

A25    English: Closed System: Modern Line ; *pwo 5/01 add, nat
1.g3 e5 2.c4 Nf6 3.Bg2 Nc6 4.Nc3 Bc5 5.e3 O-O 6.Nge2 d6 7.O-O 1/2

A26    English: Closed System
1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 1/2

A26    English: Botvinnik System
1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.e4 1/2

; following position after 13b can also derive from A04, A20, A21, & A25

A26/07 English: Closed System: (with...f5) ; (nat) *pwo
1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 d6 6.d3 f5 7.Rb1 a5 8.a3 Nf6
9.O-O O-O 10.b4 axb4 11.axb4 h6 12.b5 Ne7 13.Bb2 Be6 14.Ra1 Rc8 15.Ra7
1/2

A26/07 English: Closed System: (with...f5) ; (nat) *pwo
1.c4 e5 2.Nc3 Nc6 3.Nf3 g6 4.g3 Bg7 5.Bg2 d6 6.d3 f5 7.O-O Nf6 8.Rb1 O-O
9.b4 h6 1/2

A26    English: Closed System: Modern Line ; *pwo
1.c4 e5 2.Nc3 Nf6 3.Nf3 Nc6 4.g3 g6 5.Bg2 Bg7 6.O-O O-O 7.d3 d6 1/2

A26    English: Closed System: (with...f5) ; *pwo
1.c4 e5 2.g3 Nc6 3.Bg2 g6 4.Nc3 Bg7 5.d3 f5 1/2

A26    English: Botvinnik System ; (natural Line) *pwo
1.c4 g6 2.g3 Bg7 3.Bg2 Nf6 4.Nc3 O-O 5.e4 d6 6.Nge2 Nc6 7.d3 e5 8.O-O 1/2

A26    English: Closed System: Modern Line ; (subr fm A16) *pwo
1.c4 Nf6 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O (5.d3 d6) 1/2

;A26/11 English: Closed System: Modern Line ; (see also A16/02) *pwo
;1.c4 Nf6 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O 5.d3 d6 6.Rb1 Nc6 7.Nf3 e5 8.O-O a5
;9.a3 h6 10.b4 axb4 11.axb4 1/2

A26/11 English: Closed System: Modern Line ; (see also A16/02) *pwo
1.c4 Nf6 2.Nf3 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.O-O e5 7.d3 Nc6 8.Rb1 a5
1/2

;A26/09 English: Closed: Old Indian Formation ; *pwo
;1.d4 d6 2.c4 e5 3.Nf3 e4 4.Ng5 f5 5.Nc3 c6 6.Nh3 Be7 7.g3 1/2

A27    English: Three Knights System
1.c4 e5 2.Nc3 Nc6 3.Nf3 1/2

A28    English: Four Knights: Marini Variation
1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.a3 1/2

A28    English: Four Knights: Capablanca Variation
1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.d3 1/2

A28    English: Bradley Beach Variation
1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.d4 e4 1/2

A28    English: Nenarokov Variation
1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.d4 exd4 5.Nxd4 Bb4 6.Bg5 h6 7.Bh4 Bxc3+
8.bxc3 Ne5 1/2

A28    English: Four Knights, 4.e3
1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3 1/2

A28    English: Four Knights: Romanishin Variation
1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3 Bb4 5.Qc2 Bxc3 1/2

A28    English: Four Knights: Stean Variation
1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3 Bb4 5.Qc2 O-O 6.Nd5 Re8 7.Qf5 1/2

A28    English: Four Knights: Nimzovich Variation
1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e4 1/2

A29    English: Four Knights: Kingside Fianchetto ; (extnd) *pwo
1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bb4 5.Bg2 O-O 6.O-O e4 1/2

A29/19 English: Four Knights: Kingside Fianchetto ; *pwo
1.c4 e5 2.Nc3 Nf6 3.Nf3 Nc6 4.g3 Bb4 5.Bg2 O-O 6.O-O e4 7.Ne1 Bxc3 8.dxc3 h6
9.Nc2 Re8 10.Ne3 d6 1/2

A29/06 English: (...d5): Reverse Dragon ; *pwo
1.c4 e5 2.Nc3 Nf6 3.g3 d5 4.cxd5 Nxd5 5.Bg2 Nb6 6.Nf3 Nc6 7.O-O Be7 8.Rb1
1/2

A30    English: Symmetrical Variation
1.c4 c5 1/2

A30    English: Symmetrical ; (plus QGD, Gruenfeld, KID, & acc. Fianchetto Sicilians) *pwo 3/01 catchall
1.c4 c5 2.Nf3 1/2

A30    English: Symmetrical ; *pwo add
1.c4 c5 2.Nf3 Nc6 1/2

A30    English: Symmetrical: Hedgehog System
1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 1/2

A30    English: Symmetrical: Hedgehog ; (flexible Formation)
1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 d6
9.Rd1 a6 10.b3 Nbd7 1/2

;A30    English: Symmetrical: Hedgehog ; (flexible Formation) ; *pwo 3/01, nat, out 1..Nf6, back 6..Be7
;1.c4 Nf6 2.Nf3 c5 3.Nc3 e6 4.g3 b6 5.Bg2 Bb7 6.O-O Be7 (7.d4 cxd4 8.Qxd4 d6
;9.Rd1 a6 10.b3 Nbd7) 1/2

A30    English: Symmetrical: Hedgehog (Kramnik) ; *pwo 4/01 nat (subr fm A38)
1.Nf3 Nf6 2.c4 b6 3.g3 c5 4.Bg2 Bb7 5.O-O g6 6.Nc3 Bg7 7.d4 cxd4 8.Qxd4 d6
9.Rd1 Nbd7 10.b3 O-O 11.Bb2 Rc8 1/2

A30    English: Symmetrical: Hedgehog ;  natural Line ; (subr fm A14) *pwo
1.Nf3 Nf6 2.c4 c5 3.g3 b6 4.Bg2 Bb7 5.b3 e6 6.O-O Be7 7.Bb2 O-O 8.Nc3 d6
1/2

A31    English: Symmetrical Variation
1.c4 c5 2.Nf3 Nf6 3.d4 1/2

A31    English: Symmetrical Variation ; (add) *pwo
1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 1/2

A32    English: Symmetrical Variation
1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 1/2

A32    English: Symmetrical: Modern Line ; (subr fm A40, nat) *pwo
1.d4 e6 2.Nf3 c5 3.c4 cxd4 4.Nxd4 Nf6 5.Nc3 Bb4 1/2

A32    English: Symmetrical: Modern Line ; (add) *pwo
1.d4 Nf6 2.c4 e6 3.g3 c5 4.Nf3 cxd4 5.Nxd4 Qc7 6.Nc3 a6 1/2

A32    English: Symmetrical: Modern Line ; (add) *pwo
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 c5 5.g3 O-O 6.Bg2 cxd4 1/2

A33    English: Symmetrical Variation ; see also E22 (pwo)
1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 1/2

A33    English: Symmetrical: Geller Variation
1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.g3 Qb6 1/2

A33/17 English: Symmetrical Variation ; *pwo 6/01 add, nat (see also B38/07)
1.c4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.g3 Qb6 7.Nb3 1/2

A34    English: Symmetrical Variation
1.c4 c5 2.Nc3 1/2

A34    English: Symmetrical Variation
1.c4 c5 2.Nc3 Nf6 3.g3 1/2

A34    English: Symmetrical: Rubinstein System
1.c4 c5 2.Nc3 Nf6 3.g3 d5 4.cxd5 Nxd5 5.Bg2 Nc7 1/2

A34    English: Symmetrical: Three Knights System
1.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5 1/2

A34/27 English: Symmetrical: Four Knights ; (add) pwo
1.c4 c5 2.Nc3 Nf6 3.Nf3 Nc6 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nc7 7.O-O e5 8.d3 Be7
1/2

A34    English: Symmetrical: Four Knights ; *pwo add, nat, redirection from B40, footnote 1
1.e4 c5 2.Nf3 e6 3.c4 Nc6 4.Nc3 Nf6 5.Be2 Qc7 6.O-O a6 7.d4 cxd4 8.Nxd4
1/2

A35    English: Symmetrical Variation
1.c4 c5 2.Nc3 Nc6 1/2

;A35 move order may aid classification but is seldom played. The natural
;order would be, 1*Nf3 c5 2.c4 Nc6 3.Nc3 g6 4.e3 Bg7 5.d4 d6

A35    English: Symmetrical: Three Knights ; *pwo
1.c4 c5 2.Nc3 Nc6 3.Nf3 g6 4.d4 Bg7 5.e3 d6 1/2

A35    English: Symmetrical: Four Knights System
1.c4 c5 2.Nc3 Nc6 3.Nf3 Nf6 1/2

A35    English: Advanced Symmetrical ; *pwo 3/01 (nothing Symmetrical about it) nat Line for picking up early transpositions
1.c4 g6 2.d4 Bg7 3.Nc3 c5 4.Nf3 cxd4 5.Nxd4 Nc6 6.e3 Nf6 7.Be2 O-O 8.O-O d6
9.b3 Nxd4 10.exd4 d5 11.Be3 1/2

A36    English: Symmetrical Variation
1.c4 c5 2.Nc3 Nc6 3.g3 1/2

A36    English: Ultra-Symmetrical Variation
1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 1/2

A36    English: Symmetrical: Botvinnik System Reversed
1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3 e5 1/2

A36    English: Symmetrical: Botvinnik System
1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 1/2

A36    English: Symmetrical: Botvinnik System ; *pwo 3/01 add
1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 d6 6.d3 e6 7.Nge2 Nge7 8.O-O O-O
1/2

A36/18 English: Symmetrical: Modern Botvinnik System ; (add) *pwo
1.c4 Nf6 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O 5.e4 c5 6.Nge2 Nc6 7.O-O d6 8.d3 Rb8
9.Rb1 b6 10.a3 1/2

A37    English: Symmetrical Variation
1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 1/2

A37    English: Symmetrical: Botvinnik System Reversed
1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 1/2

A37    English: Symmetrical Variation ; *pwo 4/01 add, nat
1.c4 c5 2.Nf3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nc3 e5 6.O-O Nge7 7.d3 d6 8.a3 O-O
9.Rb1 a5 10.Ne1 Be6 11.Nd5 1/2

A37    English: Symmetrical Variation ; *pwo (natural Line)
1.Nf3 c5 2.g3 g6 3.c4 Bg7 4.Bg2 Nc6 5.Nc3 e6 6.O-O Nge7 7.d3 O-O 8.Bd2 d5
9.a3 b6 10.Rb1 Bb7 11.b4 cxb4 12.axb4 dxc4 13.dxc4 1/2

A38    English: Symmetrical Variation
1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 1/2

A38    English: Symmetrical: Main Line (with d3)
1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d3 1/2

A39    English: Symmetrical: Main Line (with d4)
1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 1/2

A39/10 English: Symmetrical: Main Line Knight Exchange ; (add) *pwo
1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4
8.Nxd4 Nxd4 9.Qxd4 d6 10.Qd3 (Rb8) 1/2

A39/02 English: Symmetrical: Main Line (with d4) ; (add) *pwo
1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Qb6
9.Nc2 d6 1/2

A39/10 English: Symmetrical: Modern Line (4...g6) ; *pwo 3/01 add, nat
1.c4 c5 2.Nc3 Nf6 3.Nf3 Nc6 4.g3 g6 5.d4 cxd4 6.Nxd4 Bg7 7.Bg2 Nxd4
8.Qxd4 O-O 9.O-O d6 10.Qd3 a6 11.Bd2 Bf5 12.e4 Be6 13.b3 Nd7 14.Rac1 1/2

;A39/10 English: Symmetrical: Modern Line ; (add) *pwo, nat
;1.Nf3 c5 2.g3 Nc6 3.Bg2 g6 4.O-O Bg7 5.c4 d6 6.Nc3 Nf6 7.d4 cxd4 8.Nxd4 Nxd4
;9.Qxd4 O-O 10.Qd3 Rb8 1/2

A40    Queen's Pawn Game
1.d4 1/2

A40    Polish Defense
1.d4 b5 1/2

A40    Queen's Pawn: English Defense
1.d4 b6 1/2

A40    Queen's Pawn: English Defense ; *pwo 5/01 add, catchall
1.d4 b6 2.c4 Bb7 3.Nc3 1/2

A40    Queen's Pawn: Charlick (Englund) Gambit
1.d4 e5 1/2

A40    Queen's Pawn: Englund Gambit
1.d4 e5 2.dxe5 Nc6 3.Nf3 Qe7 4.Qd5 f6 5.exf6 Nxf6 1/2

A40    Queen's Pawn Game
1.d4 e6 1/2

A40    Queen's Pawn: Keres Defense
1.d4 e6 2.c4 b6 1/2

A40    Queen's Pawn: Franco-Indian (Keres) Defense
1.d4 e6 2.c4 Bb4+ 1/2

A40    Queen's Pawn-English Symmetrical ; (subr fm A32, nat) *pwo
1.d4 e6 2.Nf3 b6 3.Bf4 Bb7 4.e3 d6 5.Nbd2 Nd7 1/2

A40    Modern Defense
1.d4 g6 1/2

A40    Modern Defense ; (including KID, English, Gruenfeld) *pwo 5/01 catchall
1.d4 g6 2.c4 1/2

A40    Modern Defense ; (including King's Indian, English) *pwo 3/01 catchall
1.d4 g6 2.c4 Bg7 3.Nc3 1/2

A40    Beefeater Defense
1.d4 g6 2.c4 Bg7 3.Nc3 c5 4.d5 Bxc3+ 5.bxc3 f5 1/2

A40    Queen's Pawn: Lundin (Kevitz-Mikenas) Defense
1.d4 Nc6 1/2

A40    Queen's Pawn-King's Pawn Game ; (subr fm B00, nat) *pwo
1.d4 Nc6 2.e4 e5 3.d5 Nce7 4.c4 Ng6 5.Be3 Nf6 6.Nc3 Bb4 7.f3 O-O 8.Bd3
1/2

A40    English-Queen's Pawn ; (subr fm A10, nat) *pwo
1.c4 b6 2.Nc3 Bb7 3.d4 e6 4.e4 Bb4 5.f3 f5 1/2

A40    Queen's Pawn-English Symmetrical ; (subr fm A31, nat) *pwo, nat
1.Nf3 c5 2.c4 g6 3.d4 Bg7 4.e4 Qa5+ 5.Nc3 Nc6 6.d5 Nd4 7.Bd2 Nxf3+ 8.Qxf3 d6
9.Qd1 Nf6 10.Be2 O-O 11.O-O a6 12.a4 1/2

A40    Queen's Pawn-KID ; (natl Line) *pwo
1.Nf3 g6 2.c4 Bg7 3.d4 1/2

A41    Queen's Pawn Game
1.d4 d6 1/2

A41    Old Indian Defense
1.d4 d6 2.c4 1/2

A41    Old Indian: Exchange ; *pwo
1.d4 d6 2.c4 e5 3.dxe5 dxe5 4.Qxd8+ (Kxd8 5.Nc3 c6 6.Nf3 f6 7.g3 Be6) 1/2

A41    Old Indian: 4.Ng5 ; *pwo
1.d4 d6 2.c4 e5 3.Nf3 e4 4.Ng5 f5 5.g3 (Be7 6.Nh3) 1/2

A41    Modern Defense
1.d4 d6 2.c4 g6 3.Nc3 Bg7 1/2

A41    Old Indian: Tartakower (Wade) Variation
1.d4 d6 2.Nf3 Bg4 1/2

A41    Robatsch Defense: Rossolimo Variation
1.e4 g6 2.d4 Bg7 3.Nf3 d6 4.c4 Bg4 1/2

A42    Modern Defense: Averbakh System
1.d4 d6 2.c4 g6 3.Nc3 Bg7 4.e4 1/2

A42    Pterodactyl Defense
1.d4 d6 2.c4 g6 3.Nc3 Bg7 4.e4 c5 5.Nf3 Qa5 1/2

A42    Modern Defense: Averbakh System: Randspringer Variation
1.d4 d6 2.c4 g6 3.Nc3 Bg7 4.e4 f5 1/2

A42    Modern Defense: Averbakh System: Kotov Variation
1.d4 d6 2.c4 g6 3.Nc3 Bg7 4.e4 Nc6 1/2

A43    Old Benoni Defense
1.d4 c5 1/2

A43    Old Benoni Defense
1.d4 c5 2.d5 d6 1/2

A43    Old Benoni: Franco-Benoni Defense
1.d4 c5 2.d5 e6 3.e4 1/2

A43    Old Benoni: Mujannah Formation
1.d4 c5 2.d5 f5 1/2

A43    Old Benoni Defense
1.d4 c5 2.d5 Nf6 1/2

A43    Woozle Defense
1.d4 c5 2.d5 Nf6 3.Nc3 Qa5 1/2

A43    Old Benoni Defense
1.d4 c5 2.d5 Nf6 3.Nf3 1/2

A43    Benoni-Torre ; *pwo 3/01 add, nat
1.d4 c5 2.Nf3 Nf6 3.d5 b5 4.Bg5 Ne4 5.Bf4 1/2

A43    Queen's Pawn Game ; *pwo 6/01 add, nat (see also A40, A70)
1.d4 e6 2.c4 c5 3.d5 exd5 4.cxd5 d6 5.Nc3 g6 6.e4 Bg7 7.Bd3 1/2

A44    Old Benoni Defense
1.d4 c5 2.d5 e5 1/2

A44    Semi-Benoni: ('blockade Variation')
1.d4 c5 2.d5 e5 3.e4 d6 1/2

A45    Queen's Pawn Game
1.d4 Nf6 1/2

A45    Queen's Pawn (c3) ; *pwo add, nat
1.d4 Nf6 2.c3 g6 3.Nd2 d5 4.Ngf3 1/2

A45/02 Queen's Pawn Game ; (subr fm B07) *pwo
1.d4 Nf6 2.g3 c5 3.d5 b5 4.Bg2 Bb7 1/2

A45/02 Queen's Pawn Game ; (subr fm B07) *pwo
1.d4 Nf6 2.g3 d5 3.Bg2 Bf5 4.Nf3 e6 5.O-O 1/2

A45/02 Queen's Pawn Game ; (subr fm B07) *pwo
1.d4 Nf6 2.g3 g6 3.Bg2 Bg7 4.e4 d6 5.Ne2 O-O 6.O-O e5 1/2

A45    Trompovsky Attack ;  (Ruth, Opovcensky Opening)
1.d4 Nf6 2.Bg5 1/2

A45/06 Trompovsky Attack: ...e6 3.e4 ; *pwo 5/01 add
1.d4 Nf6 2.Bg5 e6 3.e4 h6 4.Bxf6 Qxf6 5.Nf3 d6 6.Nc3 Nd7 7.Qd2 c6 8.O-O-O e5
9.dxe5 Nxe5 1/2

A45/09 Trompovsky Attack: Hodgson Variation ; *pwo 5/01 add
1.d4 Nf6 2.Bg5 Ne4 3.h4 c5 4.d5 g6 5.Qd3 1/2

A45/11 Trompovsky Attack: 3.Bf4 ; *pwo 5/01 add
1.d4 Nf6 2.Bg5 Ne4 3.Bf4 c5 4.f3 Qa5+ 5.c3 Nf6 6.d5 1/2

A45/09 Trompovsky Attack: 3.Bh4 ; *pwo 5/01 add
1.d4 Nf6 2.Bg5 Ne4 3.Bh4 c5 4.f3 g5 5.fxe4 gxh4 6.e3 Bh6 7.Kf2 cxd4
8.exd4 Qb6 9.Nc3 e6 1/2

A45/06 Queen's Pawn: Torre Attack ; (subr fm A46) *pwo
1.d4 Nf6 2.Nf3 e6 3.Bg5 h6 4.Bxf6 Qxf6 5.e4 d6 6.Nc3 Nd7 7.Qd2 1/2

A46    Queen's Pawn Game
1.d4 Nf6 2.Nf3 1/2

A46    Queen's Pawn ; (plus Colle, Benoni, Benko Gambit) *pwo 4/01 add catchall
1.d4 Nf6 2.Nf3 c5 1/2

A46    Queen's Pawn ; (plus KID, Old Indian, Philidor, KP Nimzovich) *pwo add 3/01 catchall
1.d4 Nf6 2.Nf3 d6 1/2

A46    Queen's Pawn Game
1.d4 Nf6 2.Nf3 e6 1/2

A46    Queen's Pawn: Yusupov-Rubinstein System
1.d4 Nf6 2.Nf3 e6 3.e3 1/2

A46    Queen's Pawn: Fianchetto (Lasker) ; added *pwo
1.d4 Nf6 2.Nf3 e6 3.g3 1/2

A46    Queen's Pawn: Andersson System ; added *pwo
1.d4 Nf6 2.Nf3 e6 3.g3 c5 4.Bg2 cxd4 5.Nxd4 a6 6.O-O Qc7 7.Nb3 1/2

A46    Queen's Pawn: 3.Bf4 ; *pwo 3/01 add, nat fm 3.Bf4/see also D02
1.d4 Nf6 2.Nf3 e6 3.Bf4 c5 4.e3 Qb6 5.Nc3 a6 6.a3 d6 1/2

A46    Queen's Pawn: Torre Attack
1.d4 Nf6 2.Nf3 e6 3.Bg5 1/2

A46    Queen's Pawn: Torre Attack (...c5, e3) ; *pwo 3/01
1.d4 Nf6 2.Nf3 e6 3.Bg5 c5 4.e3 Qb6 5.Nbd2 Qxb2 6.Bd3 d5 1/2

A46    Queen's Pawn: Torre Attack: Wagner Gambit
1.d4 Nf6 2.Nf3 e6 3.Bg5 c5 4.e4 1/2

A46/08 Queen's Pawn: Torre Attack (...h6 4.Bh4) ; *pwo 6/01 add
1.d4 Nf6 2.Nf3 e6 3.Bg5 h6 4.Bh4 b6 5.e3 Bb7 6.Nbd2 Be7 7.c3 c5 8.Bd3 O-O
1/2

A47    Queen's Indian Defense
1.d4 Nf6 2.Nf3 b6 1/2

A47    Queen's Pawn: Yusupov-Rubinstein System ; *pwo 3/01 add, nat
1.d4 Nf6 2.Nf3 b6 3.e3 e6 4.Bd3 Bb7 5.Nbd2 c5 6.O-O Be7 7.b3 O-O 8.Bb2 Nc6
9.dxc5 1/2

A47    Queen's Indian: Marienbad System
1.d4 Nf6 2.Nf3 b6 3.g3 Bb7 4.Bg2 c5 1/2

A47    Queen's Indian: Bf4 ; *pwo 3/01 add, nat Line ext fm D02
1.d4 Nf6 2.Nf3 b6 3.Bf4 e6 4.e3 Bb7 5.Nbd2 Be7 6.h3 c5 1/2

A47    Queen's Pawn: Yusupov-Rubinstein System ; (subr fm A40) *pwo (nat)
1.d4 e6 2.Nf3 c5 3.e3 Nf6 4.Bd3 b6 5.O-O Bb7 6.Nbd2 Be7 7.b3 O-O 8.Bb2 d6
9.Re1 1/2

A48    King's Indian: East Indian Defense
1.d4 Nf6 2.Nf3 g6 1/2

A48    King's Indian: London System
1.d4 Nf6 2.Nf3 g6 3.Bf4 1/2

A48    King's Indian: Torre Attack
1.d4 Nf6 2.Nf3 g6 3.Bg5 1/2

A48/10 King's Indian: Torre Attack ; *pwo add
1.d4 Nf6 2.Nf3 g6 3.Bg5 Bg7 4.Nbd2 d5 5.Bxf6 1/2

A48    King's Indian: Colle System ; *pwo 4/01 add, nat
1.d4 Nf6 2.Nf3 c5 3.e3 g6 4.Bd3 Bg7 5.O-O b6 6.Nbd2 Bb7 7.c3 O-O 8.Qe2 d5
1/2

A48    King's Indian: London System ; *pwo 4/01 add, nat
1.d4 g6 2.Nf3 Nf6 3.Bf4 Bg7 4.e3 O-O 5.h3 d6 6.Be2 Nbd7 7.O-O Qe8 8.c4 e5
9.Bh2 Qe7 10.Nc3 1/2

A49    King's Indian: Fianchetto (without c4)
1.d4 Nf6 2.Nf3 g6 3.g3 1/2

A49/08 King's Indian: Fianchetto (Nc3) ; *pwo (subr fm D02)
1.d4 Nf6 2.Nf3 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O d6 6.Nc3 Nbd7 7.e4 e5 8.h3 Re8
9.Re1 1/2

;A49/10 King's Indian: Nimzovich-Larsen Attack ; *pwo (subr fm A06, nat Line)
;1.Nf3 Nf6 2.b3 d6 3.d4 g6 4.Bb2 Bg7 5.g3 O-O 6.Bg2 Nbd7 7.O-O e5 1/2

A49/10 King's Indian: Nimzovich-Larsen Attack ; *pwo (see A01, nat Line)
1.Nf3 Nf6 2.b3 g6 3.Bb2 Bg7 4.g3 O-O 5.Bg2 d6 6.d4 Nbd7 7.O-O e5 1/2

A50    Queen's Pawn Game
1.d4 Nf6 2.c4 1/2

A50    Queen's Indian Accelerated
1.d4 Nf6 2.c4 b6 1/2

A50    Queen's Pawn, Slav ; *pwo 5/01 catchall
1.d4 Nf6 2.c4 c6 1/2

A50    Kevitz-Trajkovich Defense
1.d4 Nf6 2.c4 Nc6 1/2

A51    Budapest Defense Declined
1.d4 Nf6 2.c4 e5 1/2

A51    Budapest: Fajarowicz Variation
1.d4 Nf6 2.c4 e5 3.dxe5 Ne4 1/2

A51    Budapest: Fajarowicz: Steiner Variation
1.d4 Nf6 2.c4 e5 3.dxe5 Ne4 4.Qc2 1/2

A52    Budapest Defense
1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 1/2

A52    Budapest: Alekhine Variation
1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 4.e4 1/2

A52    Budapest: Alekhine Variation: Balogh Gambit
1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 4.e4 d6 1/2

A52    Budapest: Alekhine: Abonyi Variation
1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 4.e4 Nxe5 5.f4 Nec6 1/2

A52    Budapest: Rubinstein Variation
1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 4.Bf4 1/2

A52    Budapest: Adler Variation
1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 4.Nf3 1/2

A53    Old Indian Defense
1.d4 Nf6 2.c4 d6 1/2

A53    Old Indian ; (plus King's Indian Orthodox, Saemisch, & Fianchetto) *pwo 3/01 catchall
1.d4 Nf6 2.c4 d6 3.Nc3 g6 1/2

A53    Old Indian: Janowski Variation
1.d4 Nf6 2.c4 d6 3.Nc3 Bf5 1/2

A53    Old Indian: Bg4 ; (add, nat) *pwo
1.d4 Nf6 2.Nf3 d6 3.c4 Bg4 4.Nc3 1/2

A54    Old Indian: Ukrainian Variation
1.d4 Nf6 2.c4 d6 3.Nc3 e5 1/2

A54    Old Indian: Dus-Khotimirsky Variation
1.d4 Nf6 2.c4 d6 3.Nc3 e5 4.e3 Nbd7 5.Bd3 1/2

A54    Old Indian: Ukrainian Variation (4.Nf3)
1.d4 Nf6 2.c4 d6 3.Nc3 e5 4.Nf3 1/2

A55    Old Indian: Main Line
1.d4 Nf6 2.c4 d6 3.Nc3 e5 4.Nf3 Nbd7 5.e4 1/2

A55/02 Old Indian: Main Line ; (add) *pwo
1.d4 Nf6 2.c4 d6 3.Nc3 e5 4.Nf3 Nbd7 5.e4 Be7 6.g3 O-O 7.Bg2 c6 8.O-O a6
9.a4 a5 10.h3 Re8 11.Be3 exd4 1/2

A55/02 Old Indian: Main Line (5.g3) ; *pwo 4/01 add, nat (same as above)
1.d4 Nf6 2.c4 d6 3.Nc3 e5 4.Nf3 Nbd7 5.g3 Be7 6.Bg2 c6 7.O-O O-O 8.e4 a6
9.a4 a5 10.h3 Re8 11.Be3 Bf8 1/2

A55    Old Indian: 3...Nbd7 ; (add) *pwo 3/01 add, nat
1.d4 Nf6 2.c4 d6 3.Nf3 Nbd7 4.Nc3 e5 5.e4 Be7 6.Be2 c6 7.O-O O-O 8.Be3 Ng4
9.Bd2 1/2

A56    Benoni Defense
1.d4 Nf6 2.c4 c5 1/2

A56    Benoni Defense: Hromodka System
1.d4 Nf6 2.c4 c5 3.d5 d6 1/2

A56    Czech Benoni Defense
1.d4 Nf6 2.c4 c5 3.d5 e5 1/2

A56    Czech Benoni: King's Indian System
1.d4 Nf6 2.c4 c5 3.d5 e5 4.Nc3 d6 5.e4 g6 1/2

A56    Vulture Defense
1.d4 Nf6 2.c4 c5 3.d5 Ne4 1/2

A57    Benko (Volga) Gambit ; *pwo
1.d4 Nf6 2.c4 c5 3.d5 b5 1/2

A57    Benko Gambit: Half Accepted
1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 1/2

A57    Benko Gambit: Nescafe Frappe Attack
1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.Nc3 axb5 6.e4 b4 7.Nb5 d6 8.Bc4 1/2

A57/06 Benko Gambit: 4.Nf3 ; *pwo
1.d4 Nf6 2.c4 c5 3.d5 b5 4.Nf3 Bb7 1/2

A58    Benko Gambit Accepted
1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 1/2

A58    Benko Gambit: Fianchetto Variation
1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 d6 7.Nf3 g6 8.g3 1/2

A59    Benko Gambit: 7.e4
1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 d6 7.e4 1/2

A59    Benko Gambit: Main Line
1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 d6 7.e4 Bxf1 8.Kxf1 g6
9.g3 Bg7 10.Kg2 O-O 11.Nf3 1/2

A59    Benko Gambit: Ne2 Variation
1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 d6 7.e4 Bxf1 8.Kxf1 g6
9.Nge2 1/2

A59/03 Benko Gambit: Fianchetto Variation with e4 ; *pwo 6/01 add, nat
1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 d6 7.Nf3 g6 8.e4 Bxf1
9.Kxf1 Bg7 10.g3 O-O 11.Kg2 Nbd7 12.Re1 1/2

A60    Benoni Defense
1.d4 Nf6 2.c4 c5 3.d5 e6 1/2

A60    Benoni: with g3 ; *pwo 3/01 add
1.d4 Nf6 2.c4 c5 3.d5 e6 4.g3 1/2

A61    Benoni Defense
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 1/2

A61    Benoni: Uhlmann Variation
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.Bg5 1/2

A61    Benoni: Nimzovich (Knight's Tour); Variation
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.Nd2 1/2

A63    Benoni: Fianchetto Variation
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.g3 Bg7 8.Bg2 O-O
9.O-O Nbd7 1/2

A64    Benoni: Fianchetto (11...Re8)
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.g3 Bg7 8.Bg2 O-O
9.O-O Nbd7 10.Nd2 a6 11.a4 Re8 1/2

A64    Benoni: Fianchetto (...Re8) ; *pwo 3/01 add
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.g3 Bg7 8.Bg2 O-O
9.O-O Re8 10.Nd2 Nbd7 11.a4 a6 12.a5 Rb8 1/2

A64    Benoni: Fianchetto (...Re8) ; *pwo 3/01 add, nat out 2...e6, back 11.Re8
1.d4 Nf6 2.c4 e6 3.g3 c5 4.d5 exd5 5.cxd5 d6 6.Bg2 g6 7.Nf3 Bg7 8.Nc3 O-O
9.O-O a6 10.a4 Nbd7 11.Nd2 Re8 12.Nc4 Nb6 13.Na3 Bd7 14.h3 1/2

A65    Benoni: 6.e4
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 1/2

; see also E81 and notes

A65    Benoni: Saemisch Formation ; *pwo
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f3 1/2

A65/03 Benoni (Bd3) ; *pwo (subr fm A66)
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Bd3 Bg7 8.h3 O-O
9.Nf3 a6 10.a4 Re8 11.O-O Nbd7 12.Re1 Qc7 13.Bf4 1/2

A65/17 Benoni (Bd3) ; *pwo (subr fm A66)
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Bd3 Bg7 8.Nge2 O-O
9.O-O a6 10.a4 Re8 11.h3 Nbd7 12.Ng3 Qc7 13.f4 c4 14.Bc2 1/2

A65    Benoni: 7.Bf4 ; *pwo (subr fm A66)
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Bf4 1/2

A65/07 Benoni: Saemisch Formation ; *pwo (subtracts Line from E81), King's Indian move order
1.d4 Nf6 2.c4 c5 3.d5 g6 4.Nc3 Bg7 5.e4 d6 6.f3 O-O 7.Bg5 e6 1/2

A65/06 Benoni: Saemisch Formation ; (subr Line from E70, E81) *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 c5 7.d5 e6 8.Qd2 1/2

A65/07 Benoni: Saemisch Formation ; *pwo (natural Line, subr fm E81)
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Bg5 c5 7.d5 e6 8.Qd2 exd5
9.cxd5 a6 10.a4 h6 11.Be3 Re8 12.Nge2 h5 13.Nc1 Nbd7 14.Nd3 Ne5 15.Nf2 Nh7
16.Be2 1/2

A65/07 Benoni: Saemisch Formation ; *pwo (natural Line, subr fm E81)
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Bg5 c5 7.d5 e6 8.Qd2 exd5
9.cxd5 h6 10.Be3 a6 11.a4 Re8 12.Nge2 h5 13.Nc1 Nbd7 14.Nd3 Ne5 15.Nf2 Nh7
1/2

A65/07 Benoni: Saemisch Formation ; *pwo (natural Line, subr fm E81)
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Bg5 c5 7.d5 e6 8.Qd2 exd5
9.cxd5 Re8 10.Nge2 a6 11.a4 Nbd7 (12.Nd1 Ne5 13.Nec3 Qa5 14.Ra3) 1/2

A67    Benoni: Taimanov Variation ; (ext) *pwo
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Bb5+ Nfd7
9.a4 1/2

A68    Benoni: Four Pawns Attack ; (Be2 added, else is A69) *pwo
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Nf3 O-O
9.Be2 1/2

A68/03 Benoni: Four Pawns Attack ; *pwo
1.d4 Nf6 2.c4 c5 3.d5 g6 4.Nc3 d6 5.e4 Bg7 6.f4 O-O 7.Nf3 e6 8.Bd3 exd5
9.cxd5 1/2

A69    Benoni: Four Pawns Attack: Main Line
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Nf3 O-O
9.Be2 Re8 1/2

; The A70-A79 expansion and detail seems overdone when compared to many
; similar ranges of ECO codes. Ten good numbers were used up by being
; devoted to a few Games played while other Openings, far more common,
; have to "double up" using just a code or two.

A70    Benoni: Classical (with e4 and Nf3)
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 1/2

A70    Benoni: Classical (without 9.O-O)
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 1/2

A70/02 Benoni: Classical ; *pwo 3/01 add, nat from 4.Nf3
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nf3 exd5 5.cxd5 d6 6.Nc3 g6 7.e4 Bg7 8.h3 O-O
9.Bd3 b5 10.Nxb5 Re8 11.O-O Nxe4 12.Re1 a6 13.Na3 Nf6 1/2

A71    Benoni: Classical (8.Bg5)
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Bg5 1/2

; The Benoni must have been a favorate when Vol A was first written.
; Take this next Line (A72):

A72    Benoni: Classical (without 9.O-O)
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O
1/2

A73    Benoni: Classical (9.O-O)
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O
9.O-O 1/2

A74    Benoni: Classical (9...a6 10.a4)
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O
9.O-O a6 10.a4 1/2

A75    Benoni: Classical (with...a6 &...Bg4)
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O
9.O-O a6 10.a4 Bg4 1/2

A76    Benoni: Classical (9...Re8)
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O
9.O-O Re8 1/2

A77    Benoni: Classical (9...Re8 10.Nd2)
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O
9.O-O Re8 10.Nd2 1/2

A78    Benoni: Classical (with...Re8 &...Na6)
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O
9.O-O Re8 10.Nd2 Na6 1/2

A79    Benoni: Classical (11.f3)
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O
9.O-O Re8 10.Nd2 Na6 11.f3 1/2

A80    Dutch
1.d4 f5 1/2

A80    Dutch: 2.Bg5 Variation
1.d4 f5 2.Bg5 1/2

A80    Dutch: Spielmann Gambit
1.d4 f5 2.Nc3 Nf6 3.g4 1/2

A80    Dutch: Manhattan Variation ; (Alapin-Ulvestad) 
1.d4 f5 2.Qd3 1/2

A81    Dutch Defense
1.d4 f5 2.g3 1/2

A81    Dutch: Leningrad: Karlsbad Variation
1.d4 f5 2.g3 g6 3.Bg2 Bg7 4.Nh3 1/2

A81    Dutch: (Stonewall & Ilyin-Genevsky) ; *pwo 5/01 add, catchall
1.d4 f5 2.g3 Nf6 3.Bg2 e6 4.Nf3 1/2

A81    Dutch Defense: Blackburne Variation
1.d4 f5 2.g3 Nf6 3.Bg2 e6 4.Nh3 1/2

A81    Dutch Defense
1.d4 f5 2.g3 Nf6 3.Bg2 g6 1/2

A82    Dutch: Balogh Defense
1.d4 f5 2.e4 d6 1/2

A82    Dutch: Staunton Gambit
1.d4 f5 2.e4 fxe4 1/2

A82    Dutch: Staunton Gambit: Tartakower Variation
1.d4 f5 2.e4 fxe4 3.Nc3 Nf6 4.g4 1/2

A83    Dutch: Staunton Gambit: Staunton's Line
1.d4 f5 2.e4 fxe4 3.Nc3 Nf6 4.Bg5 1/2

A83    Dutch: Staunton Gambit: Chigorin Variation
1.d4 f5 2.e4 fxe4 3.Nc3 Nf6 4.Bg5 c6 1/2

A84    Dutch Defense
1.d4 f5 2.c4 e6 1/2

A84    Dutch Defense: Rubinstein Variation
1.d4 f5 2.c4 e6 3.Nc3 1/2

A84    Dutch Defense: Bladel Variation
1.d4 f5 2.c4 g6 3.Nc3 Nh6 1/2

A84    Dutch Defense
1.d4 f5 2.c4 Nf6 1/2

A84/12 Slav Dutch ; *pwo 6/01 add, nat
1.d4 d5 2.c4 c6 3.Nf3 e6 4.e3 f5 5.Bd3 Nf6 6.O-O Bd6 7.b3 Qe7 1/2

A84    Dutch Defense: Modern Line ; *pwo 3/01 add, nat Line w/ D31 beginning
1.d4 d5 2.c4 e6 3.Nc3 c6 4.e3 f5 5.Nf3 Nf6 6.Bd3 Bd6 7.Qe2 1/2

A85    Dutch (with c4 & Nc3)
1.d4 f5 2.c4 Nf6 3.Nc3 1/2

A85    Dutch (with c4 & Nc3) ; *pwo 5/01
1.d4 f5 2.c4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.Bf4 d6 6.e3 O-O 1/2

A85    Dutch: Anderssen System ; *pwo 4/01 add, nat
1.d4 f5 2.c4 e6 3.Nc3 Nf6 4.e3 Bb4 5.Bd3 Bxc3+ 6.bxc3 c5 7.Ne2 Nc6 8.O-O b6
9.f3 O-O 1/2

A86    Dutch: Hort-Antoshin System
1.d4 f5 2.c4 Nf6 3.g3 d6 4.Bg2 c6 5.Nc3 Qc7 1/2

A86    Dutch: Leningrad Variation
1.d4 f5 2.c4 Nf6 3.g3 g6 1/2

A87    Dutch: Leningrad: Main Variation
1.d4 f5 2.c4 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3 1/2

A87/09 Dutch: Leningrad: Main Variation (7...Qe8) ; *pwo (subr fm A88)
1.d4 f5 2.c4 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3 O-O 6.O-O d6 7.Nc3 Qe8 8.d5 Na6
9.Rb1 Nc5 1/2

A87/09 Dutch: Leningrad: Modern Main Line ; *pwo 5/01 add, nat
1.d4 f5 2.g3 Nf6 3.Bg2 g6 4.c4 Bg7 5.Nc3 O-O 6.Nf3 d6 7.O-O Qe8 8.d5 Na6
9.Rb1 Bd7 10.b4 c6 11.dxc6 bxc6 12.a3 1/2

A87/09 Dutch: Leningrad: Modern Line ; *pwo (nat Line)
1.Nf3 f5 2.g3 Nf6 3.Bg2 g6 4.d4 Bg7 5.O-O O-O 6.c4 d6 7.Nc3 Qe8 1/2

A88    Dutch: Leningrad: Main Variation (with c6)
1.d4 f5 2.c4 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3 O-O 6.O-O d6 7.Nc3 c6 1/2

A88/14 Dutch: Leningrad: Modern Main Line (...c6 d5) ; *pwo 5/01 add, nat
1.d4 f5 2.g3 Nf6 3.Bg2 g6 4.Nf3 Bg7 5.O-O O-O 6.c4 d6 7.Nc3 c6 8.d5 e5
9.dxe6 Bxe6 10.Qd3 Na6 11.Bf4 Ne4 12.Nxe4 fxe4 13.Qxe4 Nc5 14.Qc2 Bf5 1/2

A89    Dutch: Leningrad: Main Variation (with Nc6)
1.d4 f5 2.c4 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3 O-O 6.O-O d6 7.Nc3 Nc6 1/2

A89    Dutch: Leningrad: Modern Main Line ; *pwo 3/01 add, nat
1.d4 f5 2.Nf3 Nf6 3.g3 g6 4.Bg2 Bg7 5.c4 O-O 6.O-O d6 7.Nc3 Nc6 8.d5 Ne5
9.Nxe5 1/2

A90    Dutch Defense
1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 1/2

A90    Dutch Defense: Dutch-Indian Variation ; (Nimzo-Dutch) 
1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Bb4+ 1/2

A90    Dutch-Indian: Alekhine Variation
1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Bb4+ 5.Bd2 Be7 1/2

A90/05 Dutch: Stonewall (Bd6) ; (nat Line) *pwo
1.d4 e6 2.c4 f5 3.g3 Nf6 4.Bg2 d5 5.Nf3 c6 6.O-O Bd6 7.b3 Qe7 8.Bb2 b6
9.Nbd2 Bb7 10.Ne5 O-O 1/2

A90/05 Dutch: Stonewall (Bd6) ; *pwo 5/01 add, nat
1.d4 e6 2.Nf3 f5 3.g3 Nf6 4.Bg2 d5 5.O-O Bd6 6.c4 c6 7.b3 Qe7 8.Bb2 1/2

A91    Dutch Defense
1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 1/2

A92    Dutch Defense
1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 1/2

A92    Dutch: Stonewall Variation
1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d5 1/2

A92    Dutch Defense: Alekhine Variation
1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O Ne4 1/2

A93    Dutch: Stonewall: Botvinnik Variation
1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d5 7.b3 1/2

A94    Dutch: Stonewall (with Ba3) ; *pwo
1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d5 7.b3 c6 8.Ba3 Bxa3
9.Nxa3 Qe7 10.Qc1 1/2

A95    Dutch: Stonewall (with Nc3)
1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d5 7.Nc3 c6 1/2

A96    Dutch: Classical Variation
1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d6 1/2

A97    Dutch: Ilyin-Genevsky Variation
1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d6 7.Nc3 Qe8 1/2

A98    Dutch: Ilyin-Genevsky (with Qc2)
1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d6 7.Nc3 Qe8 8.Qc2 1/2

A98    Dutch: Ilyin-Genevsky (with Qc2) ; *pwo 4/01 add, nat
1.Nf3 e6 2.c4 f5 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O 6.d4 d6 7.Nc3 Qe8 8.Qc2 Qh5
1/2

A99    Dutch: Ilyin-Genevsky (with b3)
1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d6 7.Nc3 Qe8 8.b3 1/2

B00    King's Pawn Opening
1.e4 1/2

B00    St.George Defense ;(Baker) 
1.e4 a6 1/2

B00    Owen Defense
1.e4 b6 1/2

B00/01 Bishops Defense ; *pwo 3/01 add, nat (..e6>Bb7)		
1.e4 b6 2.d4 e6 3.Bd3 Bb7 4.Nf3 c5 5.c3 cxd4 1/2

B00    Guatemala Defense
1.e4 b6 2.d4 Ba6 1/2

B00    Fried Fox Defense
1.e4 f6 2.d4 Kf7 1/2

B00    Carr's Defense
1.e4 h6 1/2

B00    KP: Nimzovich Defense
1.e4 Nc6 1/2

B00    KP: Nimzovich Defense
1.e4 Nc6 2.d4 1/2

B00    KP: Nimzovich Defense: Marshall Gambit
1.e4 Nc6 2.d4 d5 3.exd5 Qxd5 4.Nc3 1/2

B00    KP: Nimzovich Defense: Bogolyubov Variation
1.e4 Nc6 2.d4 d5 3.Nc3 1/2

B00    KP: Nimzovich Defense
1.e4 Nc6 2.Nf3 1/2

B00/10 KP: Nimzovich: 3...d6 (Miles) ; *pwo 4/01 add, eco footnote 58
1.e4 Nc6 2.Nf3 d6 3.d4 Nf6 4.Nc3 Bg4 5.Be3 e6 6.Be2 Be7 7.O-O O-O 1/2

B01    Scandinavian Defense ;(centre counter)
1.e4 d5 1/2

B01    Counter-Counter (e4/d4) Attack ; *pwo
1.e4 d5 2.d4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 1/2

B01    Scandinavian Defense
1.e4 d5 2.exd5 Nf6 1/2

B01    Scandinavian Gambit
1.e4 d5 2.exd5 Nf6 3.c4 c6 1/2

B01    Scandinavian: Icelandic Gambit
1.e4 d5 2.exd5 Nf6 3.c4 e6 1/2

B01    Scandinavian Defense
1.e4 d5 2.exd5 Nf6 3.d4 1/2

B01    Scandinavian: Marshall Variation
1.e4 d5 2.exd5 Nf6 3.d4 Nxd5 1/2

B01    Scandinavian: Kiel Variation
1.e4 d5 2.exd5 Nf6 3.d4 Nxd5 4.c4 Nb4 1/2

B01    Scandinavian: Mieses-Kotrvc Gambit
1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.b4 1/2

B01    Scandinavian: Anderssen Counter-Attack
1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.d4 e5 1/2

B01/14 Scandinavian Defense 5.Bc4 ; *pwo 6/01 add, footnote 86
1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.d4 Nf6 5.Bc4 c6 6.Bd2 Bf5 1/2

B01    Scandinavian Defense
1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.d4 Nf6 5.Nf3 Bf5 1/2

B01    Scandinavian Defense: Gruenfeld Variation
1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.d4 Nf6 5.Nf3 Bf5 6.Ne5 c6 7.g4 1/2

B01    Scandinavian Defense: Lasker Variation
1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.d4 Nf6 5.Nf3 Bg4 6.h3 1/2

B01    Scandinavian: Pytel-Wade Variation
1.e4 d5 2.exd5 Qxd5 3.Nc3 Qd6 1/2

B02    Alekhine's Defense: Maroczy Variation
1.e4 Nf6 2.d3 1/2

B02    Alekhine's Defense
1.e4 Nf6 2.e5 Nd5 1/2

B02    Alekhine's Defense: Two Pawns Attack: Mikenas Variation
1.e4 Nf6 2.e5 Nd5 3.c4 Nb6 4.c5 Nd5 5.Bc4 e6 6.Nc3 d6 1/2

B02    Alekhine's Defense: Kmoch Variation
1.e4 Nf6 2.e5 Nd5 3.Bc4 Nb6 4.Bb3 c5 5.d3 1/2

B02    Alekhine's Defense: Saemisch Attack
1.e4 Nf6 2.e5 Nd5 3.Nc3 1/2

B02    Alekhine's Defense: Brooklyn Defense
1.e4 Nf6 2.e5 Ng8 1/2

B02    Alekhine's Defense: Scandinavian Variation
1.e4 Nf6 2.Nc3 d5 1/2

B02    Alekhine's Defense: Spielmann Variation
1.e4 Nf6 2.Nc3 d5 3.e5 Nfd7 4.e6 1/2

B02/04 Alekhine's Defense: Scandinavian (2.Nc3) ; *pwo 3/01 add, footnote 23
1.e4 Nf6 2.Nc3 d5 3.exd5 Nxd5 4.Bc4 e6 5.Nf3 Nxc3 6.bxc3 Nd7 (7.d4 Be7
8.O-O O-O 9.Qe2) 1/2

B03    Alekhine's Defense
1.e4 Nf6 2.e5 Nd5 3.d4 1/2

B03    Alekhine's Defense
1.e4 Nf6 2.e5 Nd5 3.d4 d6 1/2

B03    Alekhine's Defense: Exchange Variation
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.exd6 1/2

B03    Alekhine's Defense: Exchange: Karpov Variation
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.exd6 cxd6 6.Nf3 g6 7.Be2 Bg7 8.O-O O-O
9.h3 Nc6 10.Nc3 Bf5 11.Bf4 1/2

B03    Alekhine's Defense: Four Pawns Attack: Korchnoi Variation
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 dxe5 6.fxe5 Bf5 7.Nc3 e6 8.Nf3 Be7
9.Be2 O-O 10.O-O f6 1/2

B03    Alekhine's Defense: Four Pawns Attack (6...Nc6)
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 dxe5 6.fxe5 Nc6 1/2

B03    Alekhine's Defense: Four Pawns Attack: Tartakower Variation
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 dxe5 6.fxe5 Nc6 7.Be3 Bf5 8.Nc3 e6
9.Nf3 Qd7 10.Be2 O-O-O 11.O-O Be7 1/2

B03    Alekhine's Defense: Four Pawns Attack: Fianchetto Variation
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 g6 1/2

B03    Alekhine's Defense: Balogh Variation
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Bc4 1/2

B04    Alekhine's Defense: Modern Variation
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 1/2

B04    Alekhine's Defense: Modern: Larsen Variation
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 dxe5 1/2

B04    Alekhine's Defense: Modern: Fianchetto Variation
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 g6 1/2

B04    Alekhine's Defense: Modern: Keres Variation
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 g6 5.Bc4 Nb6 6.Bb3 Bg7 7.a4 1/2

B04    Alekhine's Defense: Modern: Schmid Variation
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Nb6 1/2

B05    Alekhine's Defense: Modern: Flohr Variation
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Bg4 5.Be2 c6 1/2

B06    Robatsch-Pirc Openings ; (Modern, plus KID, Pirc, Caro-Kann, & Sicilian) *pwo 3/01 catchall
1.e4 g6 2.d4 1/2

B06    Robatsch (Modern) Defense
1.e4 g6 2.d4 Bg7 1/2

B06    Robatsch Defense: Three Pawns Attack
1.e4 g6 2.d4 Bg7 3.f4 1/2

B06    Robatsch Defense
1.e4 g6 2.d4 Bg7 3.Nc3 1/2

B06    Robatsch Defense: Gurgenidze Variation
1.e4 g6 2.d4 Bg7 3.Nc3 c6 4.f4 d5 5.e5 h5 1/2

B06/09 Robatsch: Gurgenidze Bc4 ; *pwo
1.e4 g6 2.d4 Bg7 3.Nc3 c6 4.Bc4 d6 5.Qf3 e6 6.Nge2 Nd7 7.Bb3 Ngf6 8.O-O
1/2

B06    Robatsch (Modern) Defense
1.e4 g6 2.d4 Bg7 3.Nc3 d6 1/2

B06/19 Robatsch Defense: Pseudo-Austrian Attack ; (ext fm 4.f4) *pwo
1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.f4 c6 5.Nf3 Bg4 6.Be3 Qb6 1/2

B06/18 Robatsch Defense: 4...Nc6 ; *pwo 5/01 add
1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.f4 Nc6 5.Be3 Nf6 6.Nf3 O-O 7.Be2 e6 1/2

B06/09 Pirc-Robatsch: 4.Be3 a6 ; (add) *pwo
1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.Be3 a6 5.Qd2 b5 1/2

B06/16 Pirc-Robatsch: 4.Be3 c6 ; (add) *pwo
1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.Be3 c6 5.Qd2 b5 6.f3 Nd7 7.h4 h5 8.Nh3 1/2

B06    Pirc-Robatsch: 4.Be3 Nd7 ; (add) *pwo
1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.Be3 Nd7 1/2

B06    Pirc-Robatsch: 4.Be3 Nf6 ; (add) *pwo
1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.Be3 Nf6 1/2

B06/11 Robatsch Defense: 4.Bg5 ; *pwo 5/01 add, footnote 49
1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.Bg5 c6 5.Qd2 b5 6.f4 Nd7 7.Nf3 1/2

B06    Robatsch Defense: Two Knights Variation
1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.Nf3 1/2

B06    Robatsch Defense: Two Knights: Suttles Variation
1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.Nf3 c6 1/2

B06    Robatsch Defense ; (sub fm B07/A41 catchall) *pwo
1.e4 g6 2.d4 Bg7 3.Nf3 d6 1/2

B06/17 Robatsch Defense: 4.Bc4 ; (add) *pwo
1.e4 g6 2.d4 Bg7 3.Nf3 d6 4.Bc4 1/2

B06    Pirc-Robatsch ; (add) *pwo
1.e4 g6 2.d4 Bg7 3.Nf3 d6 4.Bd3 1/2

B06/14 Robatsch Defense: 4.Be2 ; (subtracts fm B07) *pwo
1.e4 g6 2.d4 Bg7 3.Nf3 d6 4.Be2 1/2

B06    Robatsch Defense (with ...c6) ; B06 catch-all (subr fm B12,B15) *pwo
1.e4 g6 2.d4 c6 3.Nf3 Bg7 4.Nc3 d5 1/2

B06/02 Robatsch Defense: Three Pawns Attack ; (substract fm B07) *pwo
1.e4 g6 2.d4 d6 3.f4 Bg7 1/2

B06/01 Robatsch Defense: Root Variation ; (sub fm B07) *pwo
1.e4 g6 2.d4 d6 3.Nc3 a6 1/2

B06    Norwegian Defense
1.e4 g6 2.d4 Nf6 3.e5 Nh5 4.g4 Ng7 1/2

B06    Pirc-Robatsch ; (subr fm A10) *pwo nat
1.e4 d6 2.d4 g6 3.Be3 Bg7 4.Bd3 (c5 5.Ne2 Nc6 6.c3 b6) 1/2

B07    Pirc Defense
1.e4 d6 2.d4 Nf6 3.Nc3 g6 1/2

B07/30 Pirc-Robatsch: g3 ; *pwo 3/01 add, eco move order
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.g3 Bg7 5.Bg2 O-O 6.Nge2 e5 7.h3 Nc6 8.Be3 exd4
9.Nxd4 Bd7 10.O-O Re8 11.Re1 1/2

B07    Pirc: Holmov System
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Bc4 1/2

B07    Pirc Defense
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be2 1/2

B07    Pirc: Chinese Variation
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be2 Bg7 5.g4 1/2

B07    Pirc: Bayonet (Mariotti) Attack
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be2 Bg7 5.h4 1/2

B07/36 Pirc: 150 Attack ; (ext from 5.Qd2) *pwo
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be3 c6 5.Qd2 Bg7 6.f3 b5 7.g4 1/2

B07    Pirc: 150 Attack (4...Bg7) ; *pwo
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be3 Bg7 5.Qd2 Ng4 1/2

B07    Pirc: Byrne Variation
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Bg5 1/2

B07    Pirc-Robatsch ; *pwo nat
1.e4 d6 2.d4 Nf6 3.Nc3 c6 4.a4 1/2

B07    Pirc-Robatsch ; (was B06) *pwo nat
1.e4 d6 2.d4 Nf6 3.Nc3 c6 4.f4 1/2

B07    Pirc-Robatsch ; *pwo nat
1.e4 d6 2.d4 Nf6 3.Nc3 c6 4.f4 g6 1/2

B07    Pirc: 3.Nc3 c6 ; *pwo nat
1.e4 d6 2.d4 Nf6 3.Nc3 c6 4.f4 Qa5 5.Bd3 e5 6.Nf3 Nbd7 1/2

B07    Pirc-Robatsch ; *pwo nat
1.e4 d6 2.d4 Nf6 3.Nc3 c6 4.g3 1/2

B07    Pirc-Robatsch ; *pwo nat
1.e4 d6 2.d4 Nf6 3.Nc3 c6 4.Bd3 1/2

B07    Pirc: Ufimtsev-Pytel Variation: (Pribyl Defense) ; (add "Pribyl") *pwo nat
1.e4 d6 2.d4 Nf6 3.Nc3 c6 4.Nf3 Bg4 5.Be2 e6 1/2

B07    Pirc: Step Variation ; *pwo nat
1.e4 d6 2.d4 Nf6 3.f3 e5 4.d5 Be7 1/2

B07    Pirc: 3.Bd3 ; *pwo nat
1.e4 d6 2.d4 Nf6 3.Bd3 g6 4.Nf3 Bg7 5.c3 O-O 6.O-O Nc6 7.Re1 1/2

B07/30 Pirc-Robatsch ; *pwo nat
1.e4 g6 2.d4 d6 3.Nc3 Bg7 4.Nge2 Nf6 5.g3 O-O 6.Bg2 Nc6 7.h3 e5 8.Be3 a6
1/2

B07/12 Pirc-Robatsch: 3.c3 ; *pwo 5/01 add, nat, footnote 54
1.e4 g6 2.d4 Bg7 3.c3 d6 4.Nf3 Nf6 5.Bd3 O-O 6.O-O Nc6 7.h3 1/2

B07    Pirc-Robatsch ; (sub fm B06) *pwo
1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.Be3 1/2

B07    Pirc-Robatsch ; (sub fm B06) *pwo nat
1.e4 g6 2.d4 Bg7 3.Nf3 d6 4.c3 Nf6 1/2

B07    Pirc-KID-East Indian ; *pwo nat
1.d4 Nf6 2.g3 g6 3.Bg2 Bg7 4.e4 d6 5.Nc3 O-O 1/2

B07    Pirc-Queen's Pawn-KID-East Indian ; *pwo nat
1.d4 Nf6 2.Nf3 g6 3.Nbd2 Bg7 1/2

B08    Pirc: Classical System: (two Knights)
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 1/2

B08    Pirc: Classical: h3 System
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.h3 1/2

B08/02 Pirc: Classical System: Bc4 ; *pwo 3/01 add, transpositions
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.Bc4 O-O 6.O-O 1/2

B08    Pirc: Classical System: 5.Be2
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.Be2 1/2

B08/25 Pirc: Classical: Modern Main Line ; *pwo 4/01 add, nat fm 1...g6, back 4.Nf3, footnote 127
1.e4 g6 2.d4 d6 3.Nc3 Nf6 4.Nf3 Bg7 5.Be2 O-O 6.O-O c6 7.a4 Nbd7 8.h3 e5
9.Be3 Qe7 1/2

B09    Pirc: Austrian Attack
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 1/2

B09    Pirc: Austrian Attack: Ljubojevic Variation
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Bc4 1/2

B09    Pirc: Austrian Attack: Dragon Formation
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 c5 1/2

B09    Pirc: Austrian Attack
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 1/2

B09    Pirc: Austrian Attack: 6.e5
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.e5 1/2

B09    Pirc: Austrian Attack: 6.Bd3
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 1/2

B09/27 Pirc: Austrian Attack: 6.Bd3 Nc6 7.e5 ; *pwo 5/01, out of book w/ 9.Be3 +/=
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 Nc6 7.e5 dxe5 8.fxe5 Nh5
9.Be3 1/2

B09/28 Pirc: Austrian Attack: 6.Bd3 Nc6 7.O-O ; *pwo 5/01 add, footnote 151
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 Nc6 7.O-O Bg4 8.e5 dxe5
9.dxe5 Nd5 10.h3 Nxc3 11.bxc3 Bf5 12.Be3 1/2

B09    Pirc: Austrian Attack: 6.Be3
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Be3 1/2

B09    Pirc: Austrian Attack: Modern Main Line;  (6.Bd3 Nc6) ; *pwo 5/01 add, nat
1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.f4 Nf6 5.Nf3 O-O 6.Bd3 Nc6 1/2

B10    Caro-Kann Defense
1.e4 c6 1/2

B10    Caro-Kann: Anti-Caro-Kann Defense
1.e4 c6 2.c4 1/2

B10    Caro-Kann: Anti-Anti-Caro-Kann Defense
1.e4 c6 2.c4 d5 1/2

B10    Caro-Kann: Anti-Anti-Caro-Kann: Neo-Nimzo-Gligoric ; *pwo
1.e4 c6 2.c4 d5 3.exd5 cxd5 4.cxd5 Nf6 5.Bb5+ Nbd7 6.Nc3 a6 7.Qa4 (g6
8.Nf3 Bg7 9.O-O O-O 10.Bxd7) 1/2

B10/06 Caro-Kann: Anti-Anti-Caro-Kann: neo-QGD, Semi-Tarrasch ; *pwo 3/01, footnote 39, see also D42
1.e4 c6 2.c4 d5 3.exd5 cxd5 4.cxd5 Nf6 5.Nc3 Nxd5 6.Nf3 Nc6 7.d4 e6
8.Bd3 Be7 9.O-O O-O 1/2

B10/05 Caro-Kann (e5) ; *pwo 3/01 add, ECO footnote 33; A22
1.e4 c6 2.c4 e5 3.Nf3 d6 4.d4 Bg4 1/2

B10    Caro-Kann: Closed (Breyer) Variation
1.e4 c6 2.d3 1/2

B10    Caro-Kann Defense
1.e4 c6 2.Nc3 1/2

B10    Caro-Kann: Two Knights Variation
1.e4 c6 2.Nc3 d5 3.Nf3 1/2

B10    Caro-Kann: Goldman (Spielmann) Variation
1.e4 c6 2.Nc3 d5 3.Qf3 1/2

B11    Caro-Kann: Two Knights: 3...Bg4
1.e4 c6 2.Nc3 d5 3.Nf3 Bg4 1/2

B11/05 Caro-Kann: Two Knights: 3...Bg4 Main Line ; *pwo 5/01 add, straight book
1.e4 c6 2.Nc3 d5 3.Nf3 Bg4 4.h3 Bxf3 5.Qxf3 Nf6 6.d3 e6 7.g3 Bb4 8.Bd2 d4
1/2

B11/01 Caro-Kann: Two Knights: without 3...Bg4 ; *pwo 3/01 add
1.e4 c6 2.Nc3 d5 3.Nf3 dxe4 4.Nxe4 Nf6 5.Nxf6+ gxf6 6.d4 Bg4 7.Be2 1/2

B11/01 Caro-Kann: Two Knights: without 3...Bg4 ; *pwo 3/01 add
1.e4 c6 2.Nc3 d5 3.Nf3 dxe4 4.Nxe4 Nf6 5.Nxf6+ gxf6 6.g3 1/2

B12    Caro-Kann Defense
1.e4 c6 2.d4 1/2

B12    Caro-Kann Defense
1.e4 c6 2.d4 d5 1/2

B12/02 Caro-Kann: 3.e5 c5 ; *pwo 5/01 add, same position as French Advance but White on-move
1.e4 c6 2.d4 d5 3.e5 c5 4.dxc5 e6 1/2

B12/02 Caro-Kann: 3.e5 c5 ; *pwo
1.e4 c6 2.d4 d5 3.e5 c5 4.dxc5 Nc6 5.Bb5 e6 6.Be3 Nge7 7.c3 Bd7 8.Bxc6 Nxc6
9.f4 g5 10.fxg5 Nxe5 11.Nf3 Nxf3+ 1/2

B12    Caro-Kann: Advance Variation ; (shortened) *pwo
1.e4 c6 2.d4 d5 3.e5 Bf5 1/2

B12/13 Caro-Kann: Advance Variation ; *pwo 6/01 add, footnote 81
1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nc3 e6 5.g4 Bg6 6.Nge2 c5 7.h4 h5 8.Nf4 Bh7
9.Nxh5 cxd4 1/2

B12/19 Caro-Kann: Advance: (Karpov, Seirawan) ; *pwo
1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nf3 e6 5.Be2 c5 6.O-O Nc6 7.c3 cxd4 8.cxd4 Nge7
9.a3 Be4 1/2

B12/16 Caro-Kann: Advance: Main Line ; *pwo (len rqd for transpositions)
1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nf3 e6 5.Be2 Nd7 6.O-O Ne7 7.Nh4 Bg6 8.Nd2 c5
9.c3 Nc6 10.Nxg6 hxg6 11.Nf3 Be7 12.Be3 cxd4 13.cxd4 Qb6 14.Rb1 Rc8 1/2

B12    Caro-Kann: Tartakower Variation ;(Fantasy) Variation
1.e4 c6 2.d4 d5 3.f3 1/2

B12    Caro-Kann: 3.Nd2
1.e4 c6 2.d4 d5 3.Nd2 1/2

B12    Caro-Masi Defense
1.e4 c6 2.d4 Nf6 1/2

B12/23 Caro-Kann-Robatsch ; *pwo (natural Line, subr fm B06)
1.e4 g6 2.d4 c6 3.Nf3 d5 4.Nbd2 Bg7 5.c3 Nh6 6.Bd3 (O-O 7.O-O f6 8.Re1 Nf7)
1/2

B13    Caro-Kann: Exchange Variation
1.e4 c6 2.d4 d5 3.exd5 1/2

B13    Caro-Kann: Panov-Botvinnik Attack
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 1/2

B13    Caro-Kann: Panov-Botvinnik: Gunderam Attack
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.c5 1/2

B13    Caro-Kann: Panov-Botvinnik Attack
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 1/2

B13    Caro-Kann: Panov-Botvinnik: Herzog Defense
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 Nc6 6.Bg5 dxc4 7.d5 Na5 1/2

B13    Caro-Kann: Panov-Botvinnik: Normal Variation
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 Nc6 6.Bg5 e6 1/2

B13    Caro-Kann: Panov-Botvinnik: Czerniak Variation
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 Nc6 6.Bg5 Qa5 1/2

B13    Caro-Kann: Panov-Botvinnik: Reifir (Spielmann) Variation
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 Nc6 6.Bg5 Qb6 1/2

B13    Caro-Kann: Exchange: Rubinstein Variation
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.Bd3 Nc6 5.c3 Nf6 6.Bf4 1/2

B14    Caro-Kann: Panov-Botvinnik Attack: 5...e6
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 e6 1/2

B14/17 Caro-Kann: Panov-Botvinnik Attack: 6.Nf3 Bb4 ; *pwo
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 e6 6.Nf3 Bb4 7.cxd5 Nxd5 1/2

B14    Caro-Kann: Panov-Botvinnik Attack: 5...g6
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 g6 1/2

B15    Caro-Kann Defense
1.e4 c6 2.d4 d5 3.Nc3 1/2

B15    Caro-Kann: Rasa-Studier Gambit
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.f3 1/2

B15    Caro-Kann Defense
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 1/2

B15    Caro-Kann: Alekhine Gambit
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Bd3 1/2

B15    Caro-Kann: Nimzo-Tartakower Variation
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 1/2

B15    Caro-Kann: Forgacs Variation
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.Bc4 1/2

B15/06 Caro-Kann: Gurgenidze: (e5 f4) ; (add) *pwo
1.e4 c6 2.d4 d5 3.Nc3 g6 4.e5 Bg7 5.f4 h5 6.Be3 Nh6 7.Nf3 Bg4 8.h3 Bxf3
9.Qxf3 h4 10.Bd3 e6 11.Bf2 Nd7 1/2

B15/02 Caro-Kann: Gurgenidze System ; (ext fm 3...g6) *pwo
1.e4 c6 2.d4 d5 3.Nc3 g6 4.Nf3 Bg7 5.h3 Nh6 6.Bf4 f6 7.exd5 cxd5 8.Nb5
1/2

B15/07 Caro-Kann: Gurgenidze: (f4 e5) ; *pwo (nat Line)
1.e4 g6 2.d4 Bg7 3.Nc3 c6 4.f4 d5 5.e5 Nh6 6.Nf3 Bg4 7.h3 1/2

B16    Caro-Kann: Bronstein-Larsen Variation
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ gxf6 1/2

B16/01 Caro-Kann: Bronstein-Larsen Variation ; *pwo 3/01 add, else B11
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ gxf6 6.Nf3 1/2

B17    Caro-Kann: Smyslov Variation ; (extended) *pwo (was Steinitz var)
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Bc4 Ngf6 6.Ng5 e6 7.Qe2 Nb6 1/2

B17/09 Caro-Kann: Smyslov Variation: 6.Bd3 ; *pwo (was Steinitz var)
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Ng5 Ngf6 6.Bd3 e6 7.N1f3 Bd6
8.Qe2 h6 9.Ne4 Nxe4 10.Qxe4 Nf6 11.Qe2 Qc7 1/2

B17/13 Caro-Kann: Smyslov Variation: 8.Bd3 ; (alt) *pwo (was Steinitz var)
1.e4 c6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Nd7 5.Bc4 Ngf6 6.Ng5 e6 7.Qe2 Nb6 8.Bd3
1/2

B18    Caro-Kann: Classical Variation
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 1/2

B18    Caro-Kann: Classical: Maroczy Attack
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.f4 1/2

B18/07 Caro-Kann: Classical: 6.h4 ; extend from 6.h4 & Line code added (*pwo)
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.h4 h6 7.f4 e6 8.Nf3 1/2

B18    Caro-Kann: Classical: Flohr Variation
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.Nh3 1/2

B19    Caro-Kann: Classical: 7...Nd7
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.h4 h6 7.Nf3 Nd7 1/2

B19    Caro-Kann: Classical: Spassky Variation
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.h4 h6 7.Nf3 Nd7 8.h5
1/2

B19/10 Caro-Kann: Classical: Spassky Variation ;, Modern Main Line ; *pwo 3/01 nat, out 6.Nf3, back 8.h5
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.Nf3 Nd7 7.h4 h6 8.h5 Bh7
9.Bd3 Bxd3 10.Qxd3 e6 11.Bd2 Qc7 12.O-O-O Ngf6 13.Ne4 O-O-O 14.g3 Nxe4
15.Qxe4 Bd6 16.c4 c5 1/2

B20    Sicilian Defense
1.e4 c5 1/2

B20    Sicilian Defense ; *pwo 3/01 add catchall
1.e4 c5 2.b3 1/2

B20/06 Sicilian: Blatny-Serper Variation ; *pwo 3/01, add, eco footnote 33
1.e4 c5 2.b3 Nc6 3.Bb2 e5 4.f4 exf4 5.Nf3 Nf6 6.e5 Nh5! 1/2

B20    Sicilian: Wing Gambit
1.e4 c5 2.b4 1/2

B20    Sicilian: Wing Gambit: Marshall Variation
1.e4 c5 2.b4 cxb4 3.a3 1/2

B20    Sicilian: Wing Gambit: Carlsbad Variation
1.e4 c5 2.b4 cxb4 3.a3 bxa3 1/2

B20    Sicilian: Wing Gambit: Marienbad Variation
1.e4 c5 2.b4 cxb4 3.a3 d5 4.exd5 Qxd5 5.Bb2 1/2

B20    Sicilian (English) Opening ; *pwo 3/01 catchall
1.e4 c5 2.c4 1/2

B20    Sicilian: Gloria Variation
1.e4 c5 2.c4 d6 3.Nc3 Nc6 4.g3 h5 1/2

B20/01 Sicilian: Neo-King's Indian Attack; -Reti ; A04/16 A05/8 B30/1 *pwo
1.e4 c5 2.d3 d6 3.Nf3 Nf6 4.g3 g6 5.Bg2 Bg7 6.O-O O-O 7.Nbd2 Nc6 8.c3 1/2

B20/05 Sicilian: Short Variation (f4) ; *pwo 3/01 add (Short, 1990)
1.e4 c5 2.d3 Nc6 3.f4 g6 4.Nf3 Bg7 5.Be2 e6 1/2

B20/05 Sicilian: Neo-King's Indian Attack; -Reti ; *pwo 3/01, A08,B21,B24,B25
1.e4 c5 2.d3 Nc6 3.g3 d5 4.Nd2 Nf6 5.Bg2 e5 1/2

B20    Sicilian: Steinitz Variation
1.e4 c5 2.g3 1/2

B20    Sicilian: Cochrane Attack ; (Burger) p
1.e4 c5 2.Bc4 1/2

B20    Sicilian: Keres Variation: 2.Ne2
1.e4 c5 2.Ne2 1/2

B21    Sicilian: Smith-Morra Gambit
1.e4 c5 2.d4 1/2

B21/05 Sicilian: Smith-Morra Gambit ; *pwo 3/01, subr fm B22
1.e4 c5 2.d4 cxd4 3.c3 1/2

B21/05 Sicilian: Smith-Morra Gambit: (...d3) ; *pwo add, 3/01, ECO footnote 28
1.e4 c5 2.d4 cxd4 3.c3 d3 4.Bxd3 Nc6 5.c4 1/2

B21    Sicilian: Smith-Morra Gambit ; *pwo (lengthened) 3/01
1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 1/2

B21    Sicilian: Smith-Morra Gambit: Chicago Defense
1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 d6 6.Bc4 e6 7.O-O a6 8.Qe2 b5
9.Bb3 Ra7 1/2

B21/06 Sicilian: Smith-Morra Gambit: Chicago Defense (...Nf6) ; *pwo 2/01
1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 d6 6.Bc4 e6 7.O-O Nf6 8.Qe2 Be7
9.Rd1 e5 (10.h3 O-O 11.Be3 Be6 12.Bxe6 fxe6 13.Rac1 Rc8 14.b4 a6 15.b5 axb5
16.Qxb5 Qd7) 1/2

B21/05 Sicilian: Smith-Morra Gambit (...e6) ; *pwo 8/00
1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 e6 6.Bc4 1/2

B21    Sicilian: Andreaschek: Smith-Morra Gambit; *pwo
1.e4 c5 2.d4 cxd4 3.Nf3 e5 4.c3 1/2

B21    Sicilian: Grand Prix Attack
1.e4 c5 2.f4 1/2

B21    Sicilian: Grand Prix: Tal Gambit ; (add) *pwo
1.e4 c5 2.f4 d5 3.exd5 Nf6 1/2

B22    Sicilian: Alapin's Variation (2.c3)
1.e4 c5 2.c3 1/2

B22    Sicilian: Alapin: (...d5 exd5...Qxd5) ; *pwo
1.e4 c5 2.c3 d5 3.exd5 Qxd5 1/2

B22/16 Sicilian: Alapin: (...d5 exd5...Qxd5) ; *pwo
1.e4 c5 2.c3 d5 3.exd5 Qxd5 4.d4 cxd4 5.cxd4 Nc6 6.Nf3 e6 7.Nc3 1/2

B22/13 Sicilian: Alapin: (...d5 exd5...Qxd5) ; *pwo
1.e4 c5 2.c3 d5 3.exd5 Qxd5 4.d4 cxd4 5.cxd4 Nc6 6.Nf3 Bg4 7.Be2 e6 8.O-O
1/2

;B22/25 Sicilian: Alapin: 6.Bd3 ; *pwo 5/01 add, nat 4...e6/5...Nf6, else straight book
;1.e4 c5 2.c3 d5 3.exd5 Qxd5 4.d4 e6 5.Nf3 Nf6 6.Bd3 Nc6 7.O-O cxd4
;8.cxd4 Be7 9.Nc3 Qd6 10.Be3 O-O 11.a3 b6 12.Qe2 Bb7 13.Rad1 1/2

B22/25 Sicilian: Alapin: 6.Bd3 ; *pwo 5/01 add, nat (the way this Line is actually played)
1.e4 c5 2.c3 d5 3.exd5 Qxd5 4.d4 e6 5.Nf3 Nf6 6.Bd3 Be7 7.O-O O-O 8.Qe2 cxd4
9.cxd4 Nc6 10.Be3 b6 11.Nc3 Qd6 12.a3 Bb7 13.Rad1 1/2

B22/12 Sicilian: Alapin: (...Qxd5 without...Nf6) ; *pwo
1.e4 c5 2.c3 d5 3.exd5 Qxd5 4.d4 Nc6 5.Nf3 cxd4 6.cxd4 e5 7.Nc3 Bb4
8.Bd2 Bxc3 9.Bxc3 e4 10.Ne5 Nxe5 11.dxe5 Ne7 12.Qa4+ Bd7 1/2

B22/12 Sicilian: Alapin: (...d5 exd5...Qxd5) ; *pwo
1.e4 c5 2.c3 d5 3.exd5 Qxd5 4.d4 Nc6 5.Nf3 cxd4 6.cxd4 Bg4 1/2

B22/22 Sicilian: Alapin: (...Qxd5 with...Nf6) ; *pwo
1.e4 c5 2.c3 d5 3.exd5 Qxd5 4.d4 Nf6 5.Nf3 e6 6.Be2 Nc6 7.O-O cxd4
8.cxd4 Be7 9.Nc3 Qd6 1/2

B22/04 Sicilian: Alapin: 2...d6 ; *pwo 6/01, add (footnote 19 claims 4.Bd3 is B07 but is incorrect)
1.e4 c5 2.c3 d6 3.d4 Nf6 4.Bd3 g6 5.h3 Bg7 6.Nf3 O-O 7.O-O Nc6 1/2

B22/09 Sicilian: Alapin: ...e6 (Karpov) ; *pwo 4/01 add, footnote 49
1.e4 c5 2.c3 e6 3.d4 d5 4.exd5 exd5 5.Nf3 Nc6 6.Be2 Bd6 7.dxc5 Bxc5
8.Nbd2 Nge7 9.O-O O-O 10.Nb3 Bb6 11.Re1 Nf5 12.Bd3 1/2

B22    Sicilian: Alapin's Variation: (Smith-Morra) ; *pwo
1.e4 c5 2.c3 Nf6 3.e5 Nd5 4.d4 1/2

B22    Sicilian-Alekhine-Alapin: (Smith-Morra) ; Hal Terrie *pwo
1.e4 c5 2.c3 Nf6 3.e5 Nd5 4.d4 cxd4 5.cxd4 e6 6.Nf3 d6 1/2

; note: the Line above and the one below arrive at the same position in a
; different number of moves. (from Hal Terrie)

;B22    Sicilian-Alekhine-Alapin: (Smith-Morra) phantom Line ; Hal Terrie *pwo
;1.e4 Nf6 2.e5 Nd5 3.c4 Nb6 4.c5 Nd5 5.d4 d6 6.cxd6 cxd6 7.Nf3 e6 1/2

B22/40 Sicilian-Alekhine-Alapin: (Smith-Morra) ; *pwo 3/01, nat fm 4.d4, back 6.cxd4
1.e4 c5 2.c3 Nf6 3.e5 Nd5 4.d4 Nc6 5.Nf3 cxd4 6.cxd4 d6 7.Bc4 e6 8.O-O Be7
9.Qe2 O-O 10.Nc3 Nxc3 11.bxc3 dxe5 12.dxe5 Qc7 13.Qe4 1/2

B22    Sicilian: 2.c3: Heidenfeld Variation
1.e4 c5 2.c3 Nf6 3.e5 Nd5 4.Nf3 Nc6 5.Na3 1/2

B22/19 Sicilian: Alapin's Variation: (Smith-Morra Gambit) ; *pwo
1.e4 c5 2.d4 cxd4 3.c3 Nf6 4.e5 Nd5 1/2

B22    Sicilian: Alapin: (...d5 exd5...exd5) ; *pwo
1.e4 c5 2.Nf3 e6 3.c3 d5 4.exd5 exd5 5.d4 1/2

B22    Sicilian: Alapin: (...d5 exd5...Qxd5) ; *pwo
1.e4 c5 2.Nf3 e6 3.c3 d5 4.exd5 Qxd5 1/2

B22    Sicilian-Alekhine-Alapin: (Smith-Morra) ; *pwo
1.e4 c5 2.Nf3 e6 3.c3 Nf6 4.e5 Nd5 5.d4 cxd4 6.cxd4 1/2

B22    Sicilian: Alapin's Variation: 3.c3 ; *pwo
1.e4 c5 2.Nf3 Nc6 3.c3 1/2

B23    Sicilian: Closed
1.e4 c5 2.Nc3 1/2

B23/01 Sicilian: Closed (d6) ; *pwo 3/01 (cannot find 3...Nc6 acknowledged in eco)
1.e4 c5 2.Nc3 d6 3.f4 Nc6 4.Nf3 g6 5.Bc4 Bg7 6.O-O e6 7.d3 Nge7 8.Qe1 O-O
9.Bb3 d5 10.f5 1/2

B23    Sicilian: Closed: Korchnoi Variation
1.e4 c5 2.Nc3 e6 3.g3 d5 1/2

B23    Sicilian: Cochrane Attack: 3.Bc4 ; *pwo (to subr fm Korchnoi var)
1.e4 c5 2.Nc3 e6 3.Bc4 1/2

B23    Sicilian: Cochrane Attack: Pillars Variation ; *pwo (deeper Line; outside eco)
1.e4 c5 2.Nc3 e6 3.Bc4 Nc6 4.Nf3 a6 5.a4 Nf6 6.d3 1/2

B23    Sicilian: Closed: 2...Nc6
1.e4 c5 2.Nc3 Nc6 1/2

B23    Sicilian: Grand Prix Attack
1.e4 c5 2.Nc3 Nc6 3.f4 1/2

B23/11 Sicilian: Grand Prix Attack: Schofman Variation ; *pwo Line code added
1.e4 c5 2.Nc3 Nc6 3.f4 g6 4.Nf3 Bg7 5.Bc4 e6 6.f5 1/2

B23    Sicilian: Mieses-Spassky Attack (Bb5) ; *pwo 4/01, a situation that eco will not touch from 3.Bb5 on
1.e4 c5 2.Nc3 Nc6 3.Bb5 Nd4 4.Bc4 g6 5.Nf3 Bg7 6.Nxd4 cxd4 7.Qf3 Nh6 8.Ne2
1/2

B23    Sicilian: Chameleon Variation
1.e4 c5 2.Nc3 Nc6 3.Nge2 1/2

B24    Sicilian: Closed
1.e4 c5 2.Nc3 Nc6 3.g3 1/2

B24    Sicilian: Closed: Smyslov Variation
1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 e6 6.Be3 Nd4 7.Nce2 1/2

B24    Sicilian: Closed: Modern Botvinnik Variation ; *pwo
1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nge2 e6 6.O-O Nge7 7.d3 d6 1/2

B25    Sicilian: Closed
1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 1/2

B25    Sicilian: Closed: Spassky Variation 6.f4 ; *pwo, desc revised
1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.f4 1/2

B25    Sicilian: Closed: 6.f4 e5 Botvinnik 
1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.f4 e5 1/2

B25/05 Sicilian: Closed: 6.f4 e6 ; *pwo 3/01 add
1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.f4 e6 7.Nf3 Nge7 8.O-O O-O
9.Be3 Nd4 1/2

B25/03 Sicilian: Closed: Spassky Variation;  (Picture Pawns) ; *pwo 3/01 add
1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.f4 Nf6 7.Nf3 O-O 8.O-O Rb8
9.h3 b5 10.g4 b4 1/2

B25    Sicilian: Closed: 6.Ne2 e5 Botvinnik
1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Nge2 e5 1/2

B26    Sicilian: Closed: 6.Be3
1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Be3 1/2

B26/05 Sicilian: Closed: 6.Be3 ; *pwo 3/01 add, picks up transpositions
1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Be3 e6 7.Qd2 Rb8 8.Nge2 Nd4
1/2

B27    Sicilian: Hungarian Variation
1.e4 c5 2.Nf3 g6 1/2

B27/03 Sicilian: Hungarian Variation ; *pwo (add) - if 4.Nxd4 then B38, 3/01
1.e4 c5 2.Nf3 g6 3.d4 cxd4 4.Qxd4 Nf6 5.Bb5 Nc6 6.Bxc6 dxc6 (7.Qxd8+ Kxd8
8.Nc3) 1/2

B27    Sicilian: Quinteros Variation
1.e4 c5 2.Nf3 Qc7 1/2

B28    Sicilian: O'Kelly Variation
1.e4 c5 2.Nf3 a6 1/2

B28/01 Sicilian: O'Kelly Variation ; *pwo (add) 3/01
1.e4 c5 2.Nf3 a6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Nf3 Bb4 7.Bc4 1/2

B29    Sicilian: Nimzovich-Rubinstein Variation
1.e4 c5 2.Nf3 Nf6 1/2

B29    Sicilian: Nimzovich-Rubinstein: Rubinstein Counter-Gambit
1.e4 c5 2.Nf3 Nf6 3.e5 Nd5 4.Nc3 e6 5.Nxd5 exd5 6.d4 Nc6 1/2

B30    Sicilian Defense
1.e4 c5 2.Nf3 Nc6 1/2

B30    Sicilian Defense ; *pwo
1.e4 c5 2.Nf3 Nc6 3.c3 d5 4.exd5 1/2

B30    Sicilian Defense ; *pwo
1.e4 c5 2.Nf3 Nc6 3.g3 b6 4.Bg2 1/2

B30    Sicilian: Nimzovich-Rossolimo Attack ; "(without...d6)" in title removed (*pwo)
1.e4 c5 2.Nf3 Nc6 3.Bb5 1/2

B30/15 Sicilian: Nimzovich-Rossolimo Attack: 4.Bxc6 5.d3 Hennigan ; *pwo 5/01 add, footnote 89
1.e4 c5 2.Nf3 Nc6 3.Bb5 e6 4.Bxc6 bxc6 5.d3 Ne7 6.O-O Ng6 7.Ng5 1/2

B30/11 Sicilian: Nimzovich-Rossolimo Attack: 5.b3 ; *pwo 5/01 add
1.e4 c5 2.Nf3 Nc6 3.Bb5 e6 4.O-O Nge7 5.b3 a6 6.Bxc6 Nxc6 7.Bb2 b5 1/2

B30/12 Sicilian: Nimzovich-Rossolimo Attack: 5.c3 ; *pwo 5/01 add
1.e4 c5 2.Nf3 Nc6 3.Bb5 e6 4.O-O Nge7 5.c3 a6 6.Ba4 b5 7.Bc2 Bb7 1/2

B30    Sicilian: Nimzovich-Rossolimo Attack: Zagrebelny Variation ; *pwo
1.e4 c5 2.Nf3 Nc6 3.Bb5 e6 4.O-O Nge7 5.Nc3 a6 6.Bxc6 Nxc6 7.d4 cxd4
8.Nxd4 Qc7 9.Nxc6 1/2

B30/10 Sicilian: Nimzovich-Rossolimo Attack: 5.Re1 ; *pwo 5/01 add
1.e4 c5 2.Nf3 Nc6 3.Bb5 e6 4.O-O Nge7 5.Re1 a6 6.Bf1 d5 1/2

B30    Sicilian Defense ; (Scheveningen, Richter-Rauzer, Dragon) ; *pwo 3/01 catchall
1.e4 c5 2.Nf3 Nc6 3.Nc3 d6 1/2

B30    Sicilian Defense ; *pwo nat
1.e4 c5 2.Nf3 e6 3.Nc3 Nc6 4.Bb5 Nd4 5.O-O a6 6.Bd3 Ne7 7.Nxd4 cxd4
8.Ne2 Nc6 1/2

B30    Sicilian Defense ; (black wins Attack) *pwo nat
1.e4 c5 2.Nc3 Nc6 3.Nf3 e5 4.Bc4 d6 5.d3 Be7 6.Nd5 Nf6 7.c3 O-O 8.O-O Be6
9.Qe2 1/2

B31    Sicilian: Nimzovich-Rossolimo Attack ; (with...g6, without...d6)
1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 1/2

B31/03 Sicilian: Nimzovich-Rossolimo Attack: 4.Bxc6 ; *pwo 5/01 add, footnote 15
1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.Bxc6 dxc6 5.d3 Bg7 6.h3 e5 7.Be3 Qe7 8.Nc3 Nf6
9.Qd2 Nd7 10.Bh6 f6 1/2

B31    Sicilian: Nimzovich-Rossolimo Attack: Gurgenidze Variation
1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.Re1 e5 6.b4 1/2

B31/12 Sicilian: Nimzovich-Rossolimo Attack: Modern Line ; *pwo 5/01 add, nat (B30 start), footnote 71
1.e4 c5 2.Nf3 Nc6 3.Bb5 Nf6 4.e5 Nd5 5.O-O g6 6.Re1 Bg7 7.Nc3 Nc7
8.Bxc6 dxc6 9.Ne4 Ne6 1/2

B32    Sicilian Defense
1.e4 c5 2.Nf3 Nc6 3.d4 1/2

B32    Sicilian: Nimzovich Variation
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 d5 1/2

B32    Sicilian: Labourdonnais-Loewenthal Variation
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e5 1/2

B32    Sicilian: Labourdonnais-Loewenthal Variation: (Kalishnikov)
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e5 5.Nb5 d6 1/2

B32/13 Sicilian: Kalishnikov: Neo-Sveshnikov Variation ; *pwo
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e5 5.Nb5 d6 6.c4 Be7 7.N1c3 a6 8.Na3 h6
9.Be2 Be6 10.O-O Bg5 11.Nc2 Nf6 12.Qd3 1/2

B32/10 Sicilian: Kalishnikov: Neo-Sveshnikov Variation ; *pwo
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e5 5.Nb5 d6 6.N1c3 a6 7.Na3 b5 8.Nd5 Nge7
9.c4 Nd4 10.cxb5 Nxd5 11.exd5 Bd7 12.Be3 1/2

B32    Sicilian: Flohr (Lady Godiva) Variation
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Qc7 1/2

B33    Sicilian Defense
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 1/2

B33    Sicilian: Pelikan Variation: (Lasker-Sveshnikov)
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 1/2

B33/09 Sicilian: Sveshnikov Variation: a4 ; (see also B32) *pwo
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.a4 a6 8.Na3 Be6
9.Bg5 Rc8 10.Bc4 Be7 11.Bxf6 Bxf6 12.Nd5 Bg5 13.O-O O-O 14.c3 Kh8 15.Qe2
1/2

B33    Sicilian: Pelikan: Chelyabinsk Variation
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 b5
1/2

; the naming keeps the history of the Variation. Originally "Lasker-Pelikan;"
; Advanced by the Chelyabinsk chess school, in turn Sveshnikov, a member

B33    Sicilian: Sveshnikov Variation
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 b5
9.Bxf6 gxf6 10.Nd5 f5 1/2

B33/42 Sicilian: Sveshnikov Variation ; *pwo add
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 b5
9.Bxf6 gxf6 10.Nd5 f5 11.Bd3 Be6 12.Qh5 Bg7 13.O-O f4 14.c4 bxc4 15.Bxc4 O-O
16.Rac1 Rb8 17.b3 Qd7 18.Rfd1 Kh8 19.Qh4 1/2

B33/43 Sicilian: Sveshnikov: 9.Bxf6 ; *pwo 5/01 add, straight book
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 b5
9.Bxf6 gxf6 10.Nd5 f5 11.Bd3 Be6 12.Qh5 Rg8 13.g3 Rg4 14.f4 exf4
15.O-O-O fxe4 16.Bxe4 fxg3 17.Nf6+ Qxf6 18.Bxc6+ Kd8 1/2

; the Lines (above/below) share the same positions from 7/8.Bg5 through 13/14...Rg4
; (see also the other B33/43 Line). Taimanov positions transpose to the longer
; Lines

B33/43 Sicilian: Sveshnikov: 5...e6 ; *pwo 4/01 revised, nat (see also B45,B33/42) footnote 249
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Ndb5 d6 7.Bf4 e5 8.Bg5 a6
9.Na3 b5 10.Bxf6 gxf6 11.Nd5 f5 12.Bd3 Be6 13.Qh5 Rg8 14.g3 Rg4 (15.f4 exf4
16.Nxf4 Rxf4) 1/2

B33/30 Sicilian: Sveshnikov: Novosibirsk Variation (Kramnik) ; *pwo footnote 170
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 b5
9.Bxf6 gxf6 10.Nd5 Bg7 11.g3 f5 12.exf5 e4 1/2

B33/32 Sicilian: Sveshnikov: Novosibirsk Variation 11.Bd3 ; *pwo 5/01 add
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 b5
9.Bxf6 gxf6 10.Nd5 Bg7 11.Bd3 Ne7 12.Nxe7 Qxe7 13.c4 f5 14.O-O O-O 15.Qh5
1/2

B33/27 Sicilian: Sveshnikov: 9.Nd5 ; *pwo 4/01 add, footnote 152
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 b5
9.Nd5 Be7 10.Bxf6 Bxf6 11.c3 O-O 12.Nc2 Bg5 13.Be2 Rb8 14.O-O a5 15.Qd3 Be6
1/2

B33    Sicilian: Pelikan: Bird Variation
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 Be6
1/2

B33/04 Sicilian: Neo-Pelikan: (...Qb6 Nb3) ; *pwo 3/01, footnote 19, nat fm..Qb6, re-enter 6...e6
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Qb6 5.Nb3 Nf6 6.Nc3 e6 7.Bd3 Be7 8.O-O d5
9.exd5 exd5 1/2

;B33/43 Sicilian: Sveshnikov: Phantom Line ; *pwo 4/01 add, nat (an extra move)
;1.e4 c5 2.Nc3 e6 3.Nge2 Nc6 4.d4 cxd4 5.Nxd4 Nf6 6.Ndb5 d6 7.Bf4 e5
;8.Bg5 a6 (9.Na3 b5 10.Bxf6 gxf6 11.Nd5 f5) 1/2

B34    Sicilian: Accelerated Fianchetto: Exchange Variation ; *pwo
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 1/2

B34/05 Sicilian: Accelerated Fianchetto: Exchange 7.Be2 ; *pwo add, nat fm 5.Be3, back 7.Be2, footnote 24, see also B73/B74
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Be3 Bg7 6.Nc3 Nf6 7.Be2 O-O 8.O-O d5
9.exd5 Nxd5 10.Nxd5 1/2

B34    Sicilian: Accelerated Fianchetto: Exchange (Nc3) ; *pwo
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.Nb3 1/2

B34    Sicilian: Accelerated Fianchetto: Exchange Variation
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nxc6 1/2

B35    Sicilian: Accelerated Fianchetto: Uogele Variation (Bc4) ; see also B77,B78
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.Be3 Nf6 7.Bc4 1/2

B35/07 Sicilian: Accelerated Fianchetto: Uogele (Sax) ; *pwo 4/01, from Donaldson/Silman: "Accelerated Dragons" (& eco footnote 33 thru 12.cb3)
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.Be3 Nf6 7.Bc4 O-O 8.Bb3 a5
9.a4 Ng4 10.Qxg4 Nxd4 11.Qh4 Nxb3 12.cxb3 Bf6 13.Qg3! d6 14.Nd5! 1/2

B35/07 Sicilian: Accelerated Fianchetto: Uogele Variation ; (add) *pwo (if 9...d6, then B77)
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.Be3 Nf6 7.Bc4 O-O 8.Bb3 a5
9.f3 d5 10.Bxd5 Nxd5 11.exd5 Nb4 12.Nde2 Bf5 1/2

B36    Sicilian: Accelerated Fianchetto: Maroczy Bind
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 1/2

B36/07 Sicilian: Accelerated Fianchetto: Maroczy Bind (Gurgenidze) ; *pwo 3/01 nat, footnote 45
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Nf6 6.Nc3 d6 7.Be2 Nxd4
8.Qxd4 Bg7 9.Bg5 O-O 10.Qd2 Be6 11.Rc1 Qa5 12.f3 Rfc8 13.b3 a6 14.Na4 Qxd2+
15.Kxd2 Nd7 16.g4 f6 17.Be3 f5 18.exf5 1/2

B36    Sicilian: Accelerated Fianchetto: Gurgenidze Variation
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Nf6 6.Nc3 Nxd4 7.Qxd4 d6 1/2

B37    Sicilian: Accelerated Fianchetto: Maroczy Bind 5...Bg7
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Bg7 1/2

B37    Sicilian: Accelerated Fianchetto: Simagin Variation
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Bg7 6.Nc2 d6 7.Be2 Nh6 1/2

B38    Sicilian: Accelerated Fianchetto: Maroczy Bind 6.Be3
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Bg7 6.Be3 1/2

B38/07 Sicilian: Accelerated Fianchetto: Maroczy Bind 6.Be3 Nf6 ; (add) *pwo
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Bg7 6.Be3 Nf6 7.Nc3 O-O 8.Be2 d6
9.O-O Bd7 10.Qd2 Nxd4 11.Bxd4 Bc6 12.f3 a5 13.b3 Nd7 14.Be3 Nc5 15.Rab1 Qb6
16.Rfc1 Rfc8 17.Rc2 Qd8 1/2

B38/07 Sicilian: Accelerated Fianchetto: Maroczy Bind 6.Be3 Nf6 ; *pwo 6/01 add, nat (see also A33/17)
1.c4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.e4 Bg7 6.Be3 Nf6 7.Nc3 O-O 8.Be2 d6
9.O-O Bd7 10.Qd2 Nxd4 1/2

B38/07 Sicilian: Accelerated Fianchetto: Maroczy Bind 6.e4 d6 ; *pwo 4/01 add, nat
1.d4 Nf6 2.c4 g6 3.Nf3 c5 4.Nc3 cxd4 5.Nxd4 Bg7 6.e4 d6 7.Be2 O-O 8.O-O Nc6
9.Be3 Bd7 10.Qd2 Nxd4 11.Bxd4 Bc6 12.f3 a5 1/2

B39    Sicilian: Accelerated Fianchetto: Breyer Variation
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Bg7 6.Be3 Nf6 7.Nc3 Ng4 1/2

B40    Sicilian Defense
1.e4 c5 2.Nf3 e6 1/2

B40/01 Sicilian Defense: Honfi Variation (b3) ; *pwo 4/01 add, footnote 2 (1988)
1.e4 c5 2.Nf3 e6 3.b3 b6 4.Bb2 Bb7 5.Nc3 a6 6.d4 (cxd4 7.Nxd4 d6 8.g3 Nf6)
1/2

B40/02 Sicilian Defense ; (subr fm B22) *pwo
1.e4 c5 2.Nf3 e6 3.c3 d5 4.e5 d4 5.Bd3 Nc6 6.O-O 1/2

B40    Sicilian Defense ; (subr fm B22) *pwo
1.e4 c5 2.Nf3 e6 3.c3 Nf6 4.e5 1/2

B40    Sicilian-KIA ; *pwo (removes this seq.from A08)
1.e4 c5 2.Nf3 e6 3.d3 Nc6 1/2

B40/01 Sicilian-KIA: (...d5 Nbd2) ; *pwo (eco footnote 1; see also A08)
1.e4 c5 2.Nf3 e6 3.d3 Nc6 4.g3 d5 5.Nbd2 g6 6.Bg2 Bg7 7.O-O Nge7 1/2

B40    Sicilian: Fianchetto: KIA (...d5 Qe2) ; *pwo
1.e4 c5 2.Nf3 e6 3.d3 Nc6 4.g3 d5 5.Qe2 1/2

B40    Sicilian: double Fianchetto: KIA ; *pwo
1.e4 c5 2.Nf3 e6 3.d3 Nc6 4.g3 g6 1/2

B40    Sicilian Defense
1.e4 c5 2.Nf3 e6 3.d4 cxd4 1/2

B40    Sicilian: Anderssen Variation
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 1/2

B40    Sicilian: Pin Variation: (Sicilian Counter-Attack)
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Bb4 1/2

B40    Sicilian: Pin, Koch Variation
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Bb4 6.e5 1/2

B40    Sicilian: Marshall Variation
1.e4 c5 2.Nf3 e6 3.d4 d5 1/2

B40/03 Sicilian: Fianchetto: (...e6 Nc3...a6) ; *pwo
1.e4 c5 2.Nf3 e6 3.Nc3 a6 4.g3 b5 5.Bg2 Bb7 6.d3 d6 7.O-O 1/2

B41    Sicilian: Kan Variation
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 1/2

B41    Sicilian: Kan, Maroczy Bind: Reti Variation
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.c4 1/2

B41    Sicilian: Kan, Maroczy Bind: Bronstein Variation
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.c4 Nf6 6.Nc3 Bb4 7.Bd3 Nc6 8.Bc2
1/2

B42    Sicilian: Kan: 5.Bd3
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3 1/2

B42    Sicilian: Kan: Swiss Cheese Variation
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3 g6 1/2

B42    Sicilian: Kan: Polugaievsky Variation
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3 Bc5 1/2

B42    Sicilian: Kan: Gipslis Variation
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3 Nf6 6.O-O d6 7.c4 g6 1/2

B43    Sicilian: Kan: 5.Nc3
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 1/2

B43/06 Sicilian: Kan: 5.Nc3 Main Line ; *pwo 5/01 add, straight book
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 Qc7 6.g3 Bb4 7.Nde2 Nf6 8.Bg2 Be7
9.O-O Nc6 1/2

B44    Sicilian Defense
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 1/2

B44    Sicilian: Szen (Anti-Taimanov) Variation
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nb5 1/2

B44    Sicilian: Szen Variation: Dely-Kasparov Gambit
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nb5 d6 6.c4 Nf6 7.N1c3 a6 8.Na3 d5
1/2

B44    Sicilian: Szen: Hedgehog Variation
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nb5 d6 6.c4 Nf6 7.N1c3 a6 8.Na3 Be7
9.Be2 O-O 10.O-O b6 1/2

B45    Sicilian: Taimanov Variation
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 1/2

B45/13 Sicilian: Taimanov/Sveshnikov ; *pwo 5/01 add, feeds Sveshnikov B33/43
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Nf6 6.Ndb5 d6 7.Bf4 e5 1/2

B45/12 Sicilian: Taimanov Variation: 7.a3 ; *pwo 4/01 add, footnote 73
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Nf6 6.Ndb5 Bb4 7.a3 Bxc3+
8.Nxc3 d5 9.exd5 exd5 10.Bd3 O-O 11.O-O d4 12.Ne2 Qd5 13.Nf4 Qd6 14.Nh5
1/2

B45    Sicilian: Taimanov: American Attack
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Nf6 6.Ndb5 Bb4 7.Nd6+ 1/2

B46    Sicilian: Taimanov Variation
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6 1/2

B46/05 Sicilian: Taimanov (g3) ; *pwo 3/01 add
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6 6.g3 Nge7 7.Nb3 d6 8.Bg2 Bd7
9.O-O 1/2

B47    Sicilian: Taimanov (Bastrikov) Variation
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 1/2

; white's early f4 in the next Line makes for very difficult classification. Such
; Games can be taken as, B23, B30, B33, B43, B46, B48, B82, and B85/19; As much
; Scheveningen as Taimanov--or even a transposed Sozin, one move apart (B57/06)

B47/12 Sicilian: Taimanov: early f4 ; *pwo 4/01 nat fm 6.f4, back 10.Bf3, footnote 79
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.f4 a6 7.Be3 b5 8.Be2 Nxd4
9.Qxd4 Bb7 10.Bf3 Rc8 11.a3 Be7 1/2

B47    Sicilian: Taimanov (Bastrikov): 6.g3 ; *pwo 5/01 add
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.g3 a6 7.Bg2 d6 8.O-O
1/2

B47/06 Sicilian: Taimanov (Bastrikov): 6.g3 ; *pwo 3/01 add
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.g3 a6 7.Bg2 Nf6 8.O-O Nxd4
9.Qxd4 Bc5 10.Bf4 d6 11.Qd2 h6 12.Rad1 e5 13.Be3 Ke7 14.Bxc5 Qxc5 1/2

B47/12 Sicilian: Taimanov: Flohr Variation ; *pwo (subr fm B49)
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be2 a6 7.O-O Nf6
8.Kh1 Nxd4 9.Qxd4 Bc5 10.Qd3 h5 11.f4 Ng4 12.e5 d6 1/2

B48    Sicilian: Taimanov Variation ; (ext 6...a6) *pwo
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be3 a6 1/2

B49/10 Sicilian: Taimanov: Larsen ; *pwo
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be2 a6 7.O-O Nf6 8.Be3 Bb4
9.Na4 O-O 10.Nxc6 bxc6 11.f4 Be7 12.Bd3 c5 13.c4 Bb7 14.Nc3 d6 1/2

B49    Sicilian: Taimanov Variation
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be3 a6 7.Be2 1/2

B50    Sicilian Defense
1.e4 c5 2.Nf3 d6 1/2

B50    Sicilian: Wing Gambit Deferred
1.e4 c5 2.Nf3 d6 3.b4 1/2

B50    Sicilian: Kopec System ; *pwo
1.e4 c5 2.Nf3 d6 3.c3 Nf6 4.Bd3 1/2

B50/06 Sicilian: Kopec System: 4.Be2 ; *pwo 5/01 add, straight book
1.e4 c5 2.Nf3 d6 3.c3 Nf6 4.Be2 g6 5.O-O Bg7 6.Bb5+ Bd7 7.Bxd7+ Qxd7 8.Re1
1/2

B50    Sicilian: Closed Fianchetto (with d3) ; (natural Line) *pwo
1.e4 c5 2.Nf3 d6 3.d3 Nc6 4.g3 g6 5.Bg2 Bg7 6.O-O (e6 7.Nbd2 Nge7 8.Re1 O-O
9.a4) 1/2

;B50    Sicilian: 3.d3 ; (subr fm A04) *pwo
;1.e4 c5 2.Nf3 d6 3.d3 Nc6 4.g3 g6 5.Bg2 Bg7 6.O-O e6 7.Nbd2 Nge7 8.Re1 O-O
;9.a4 1/2

B50    Sicilian: 3.g3 ; (subr fm A04) *pwo
1.e4 c5 2.Nf3 d6 3.g3 1/2

B50/01 Sicilian: Leko Attack ; *pwo add (footnote 1)
1.e4 c5 2.Nf3 d6 3.Bc4 Nc6 4.c3 Nf6 5.d3 a6 1/2

B50/03 Sicilian Defense: Scheveningen/Najdorf/Dragon ; *pwo 3/01 add
1.e4 c5 2.Nf3 d6 3.Nc3 1/2

B50/07 Sicilian: Four Knights Fianchetto Variation ; (natural Line) *pwo
1.e4 c5 2.Nf3 e6 3.Nc3 d6 4.g3 Nc6 5.Bg2 Nf6 1/2

B51    Sicilian: Canal-Sokolsky Attack: (Nimzovich-Rossolimo, Moscow) 
1.e4 c5 2.Nf3 d6 3.Bb5+ 1/2

B51/12 Sicilian: Canal-Sokolsky Attack: (Nimzovich-Rossolimo, Moscow) ; *pwo 5/01 add, footnote 63, see also B30
1.e4 c5 2.Nf3 d6 3.Bb5+ Nc6 4.O-O Bd7 5.c3 Nf6 6.Re1 a6 7.Bf1 Bg4 8.h3 Bh5
1/2

B51    Sicilian: Nimzovich-Rossolimo Attack: 3...d6 ; *pwo nat, B30 move order
1.e4 c5 2.Nf3 Nc6 3.Bb5 d6 4.Bxc6+ 1/2

B52    Sicilian: Canal-Sokolsky Attack: 3...Bd7
1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 1/2

B52/03 Sicilian: Canal-Sokolsky Attack: 4...Nxd7 ; *pwo 5/01 add, footnote 15
1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.Bxd7+ Nxd7 5.O-O Ngf6 6.Qe2 e6 7.b3 Be7
8.Bb2 O-O 9.c4 a6 1/2

B52    Sicilian: Canal-Sokolsky Attack: Sokolsky Variation
1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.Bxd7+ Qxd7 5.c4 1/2

B52    Sicilian: Canal-Sokolsky Attack: Bronstein Gambit
1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.Bxd7+ Qxd7 5.O-O Nc6 6.c3 Nf6 7.d4 1/2

B53    Sicilian Defense
1.e4 c5 2.Nf3 d6 3.d4 cxd4 1/2

B53    Sicilian: Chekhover Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Qxd4 1/2

B53    Sicilian: Chekhover: Zaitsev Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Qxd4 Nc6 5.Bb5 Qd7 1/2

B53    Sicilian ; (Najdorf, Dragon, Scheveningen, Richter-Rauzer, Sozin) ; *pwo 5/01 add, catchall
1.e4 c5 2.Nf3 d6 3.d4 Nf6 1/2

B54    Sicilian Defense
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 1/2

B54    Sicilian: Prins (Moscow) Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.f3 1/2

B54/02 Sicilian: Taimanov Variation: 5...d6 ; *pwo
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 d6 (6.g4 Nge7 7.Be3 a6 8.f4)
1/2

B55    Sicilian: Prins Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 1/2

B55    Sicilian: Prins Variation: Venice Attack
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.f3 e5 6.Bb5+ 1/2

B56    Sicilian Defense
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 1/2

B56    Sicilian: Venice Attack
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Bb5+ 1/2

B56    Sicilian Defense
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 1/2

B57    Sicilian: Sozin ; not Scheveningen
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bc4 1/2

B57    Sicilian: Magnus Smith Trap ; (ext fm 8.e5 *pwo)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bc4 g6 7.Nxc6 bxc6
8.e5 dxe5? 9.Bxf7+ 1/2

B57    Sicilian: Sozin: Benko Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bc4 Qb6 1/2

; the following Line is the long version of B47/06 (Taimanov). Since Bc4 is
; retracted with 11.Bd3, B47 reaches the same position a move earlier.

B57/06 Sicilian: Sozin: Benko Variation 7.Nb3 ; *pwo 3/01 add, footnote 38 (Ye Jiangchuan - Gulko,B, Seattle USA US-China Summit, 2001, 1-0)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bc4 Qb6 7.Nb3 e6 8.Be3 Qc7
9.O-O a6 10.f4 Be7 11.Bd3 b5 12.Qf3 Bb7 13.Qh3 O-O 14.Rf3 b4 1/2

B58    Sicilian: Classical
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 1/2

B58    Sicilian: Boleslavsky Variation
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 e5 1/2

B59    Sicilian: Boleslavsky Variation: 7.Nb3
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 e5 7.Nb3 1/2

B60    Sicilian: Richter-Rauzer
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 1/2

B60/01 Sicilian: Richter-Rauzer: Larsen Variation (...a6) ; *pwo 3/01 add (to distinguish from B94)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 a6 1/2

B60    Sicilian: Richter-Rauzer: Larsen Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 Bd7 1/2

B61    Sicilian: Richter-Rauzer: Larsen Variation 7.Qd2
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 Bd7 7.Qd2 1/2

B62    Sicilian: Richter-Rauzer: 6...e6
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 1/2

B62    Sicilian: Richter-Rauzer: Margate (Alekhine) Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Bb5 1/2

B62    Sicilian: Richter-Rauzer: Keres Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd3 1/2

B63    Sicilian: Richter-Rauzer: Rauzer Attack ; (ext fm 7.Qd2) *pwo
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 Be7
8.O-O-O O-O 9.Nb3 1/2

B63/11 Sicilian: Richter-Rauzer: Rauzer (Fedorowicz) ; *pwo (subr fm B60)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 Be7
8.O-O-O O-O 9.Nb3 Qb6 10.f3 Rd8 11.Nb5 Rd7 1/2

B64    Sicilian: Richter-Rauzer: Rauzer Attack (...Be7...f4)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 Be7
8.O-O-O O-O 9.f4 1/2

B64/07 Sicilian: Richter-Rauzer: Rauzer Attack ;(...Be7...f4) Main Line ; *pwo 5/01 add
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 Be7
8.O-O-O O-O 9.f4 h6 10.Bh4 e5 11.Nf5 Bxf5 12.exf5 exf4 13.Kb1 d5
14.Bxf6 Bxf6 15.Nxd5 Be5 1/2

B65/09 Sicilian: Richter-Rauzer: Rauzer Attack (...Be7...Nxd4) Defense ; *pwo (ext fm 10.Qxd4)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 Be7
8.O-O-O O-O 9.f4 Nxd4 10.Qxd4 Qa5 11.Bc4 Bd7 12.e5 dxe5 13.fxe5 Bc6
14.Bd2 Nd7 15.Nd5 Qd8 16.Nxe7+ Qxe7 17.Rhe1 Rfd8 18.Qg4 Nf8 19.Bf1 1/2

B66    Sicilian: Richter-Rauzer: Rauzer Attack (...a6) Defense
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 1/2

B66/07 Sicilian: Richter-Rauzer: Rauzer Attack (...a6...h6) Defense ; *pwo
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 8.O-O-O h6
9.Be3 Bd7 10.f4 Be7 11.Bd3 b5 12.Kb1 Qc7 13.h3 Na5 (14.g4 b4 15.Nce2 Nc4
16.Bxc4 Qxc4 17.Ng3 a5 18.Rhf1) 1/2

B66/37 Sicilian: Richter-Rauzer: Rauzer Attack, 9...Be7 ; *pwo 3/01 add, nat fm 9...Be7
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 8.O-O-O h6
9.Be3 Be7 10.f4 Nxd4 11.Bxd4 b5 12.Bd3 Bb7 13.Kb1 O-O 1/2

B66    Sicilian: Richter-Rauzer: Rauzer Attack (...a6) ; *pwo
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6
8.O-O-O Be7 9.f4 Qc7 10.Be2 Bd7 11.Nb3 O-O-O 12.Bxf6 gxf6 13.Bh5 Be8
14.Kb1 Kb8 15.Qe2 Rg8 1/2

B66    Sicilian: Richter-Rauzer: Rauzer Attack (...a6) ; *pwo
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6
8.O-O-O Nxd4 1/2

B66/26 Sicilian: Richter-Rauzer: Rauzer Attack (6...a6) ; *pwo 3/01 nat add (..a6 precedes..e6) / see also b60
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 a6 7.Qd2 e6 8.O-O-O h6
9.Be3 Bd7 10.f3 b5 1/2

B66    Sicilian: Richter-Rauzer: Rauzer Attack (6...a6) ; *pwo 3/01 nat add (redirection fm b60/1 footnote 7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 a6 7.Qd2 e6
8.O-O-O Bd7 9.f4 1/2

B67    Sicilian: Richter-Rauzer: Rauzer Attack (...a6...Bd7) ; Defense
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6
8.O-O-O Bd7 1/2

B67/10 Sicilian: Richter-Rauzer: Rauzer Attack (...a6...Bd7) ; Defense ; *pwo 5/01 add
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6
8.O-O-O Bd7 9.f4 b5 1/2

B67/12 Sicilian: Richter-Rauzer: Rauzer Attack (...a6...Bd7) ; Defense ; *pwo 5/01 add, footnote 65
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6
8.O-O-O Bd7 9.f4 b5 10.Bxf6 gxf6 11.Kb1 Qb6 12.Nxc6 Bxc6 13.Qe1 Ra7 14.f5
1/2

B68    Sicilian: Richter-Rauzer: Rauzer Attack (...a6...Be7) ; Defense
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6
8.O-O-O Bd7 9.f4 Be7 1/2

B68/03 Sicilian: Richter-Rauzer: Rauzer Attack (...a6...Be7) ; (add) *pwo
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6
8.O-O-O Bd7 9.f4 Be7 10.Nf3 b5 11.e5 b4 12.exf6 bxc3 13.Qxc3 gxf6 14.Bh4 d5
15.Kb1 Na5 16.f5 Rc8 17.Qd2 Qc7 1/2

B68/02 Sicilian: Richter-Rauzer: Rauzer Attack (...a6...Be7) ; *pwo
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6
8.O-O-O Bd7 9.f4 Be7 10.Nf3 b5 11.Bd3 b4 12.Ne2 Qc7 1/2

B68    Sicilian: Richter-Rauzer: Rauzer Attack (...a6...Be7) ; *pwo
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6
8.O-O-O Bd7 9.Be2 Be7 10.f4 1/2

B69    Sicilian: Richter-Rauzer: Rauzer Attack (...a6 11.Bxf6)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6
8.O-O-O Bd7 9.f4 Be7 10.Nf3 b5 11.Bxf6 1/2

B70    Sicilian: Dragon Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 1/2

B70/01 Sicilian: Dragon: 6.Bb5+ (Korchnoi) ; *pwo 5/01 add
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Bb5+ Bd7 7.Bxd7+ Nbxd7
8.O-O Bg7 9.Be3 O-O 10.f4 Rc8 1/2

B70/02 Sicilian: Dragon: 6.Bc4 ; *pwo 5/01 add
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Bc4 Bg7 7.h3 O-O 8.O-O a6
9.Bb3 b5 10.Re1 Bb7 1/2

B70/12 Sicilian: Dragon Variation ; (subr fm B58) *pwo
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.g3 g6 7.Bg2 Nxd4
8.Qxd4 Bg7 9.O-O O-O 10.h3 Be6 11.Qd1 1/2

B70/10 Sicilian: Dragon Variation ; (subr fm B58) *pwo
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.g3 g6 7.Nde2 Bg7 8.Bg2 O-O
9.O-O 1/2

B70    Sicilian: Dragon Variation ; *pwo
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Be2 g6 7.O-O Bg7 8.Nb3 O-O
9.Bg5 Be6 10.Kh1 1/2

B70/01 Sicilian: Dragon: 5.Bb5+ ; *pwo 5/01 add, nat
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Bb5+ Bd7 6.Bxd7+ Nbxd7 7.Nc3 g6
8.O-O 1/2

B71    Sicilian: Dragon: Levenfish Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.f4 1/2

B71    Sicilian: Dragon: Levenfish-Flohr Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.f4 Nbd7 1/2

B72    Sicilian: Dragon: 6.Be3
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 1/2

B72    Sicilian: Dragon: Classical Attack
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 1/2

B72    Sicilian: Dragon, Classical: Nottingham Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.Nb3
1/2

B72    Sicilian: Dragon, Classical: Amsterdam Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.Qd2
1/2

B72    Sicilian: Dragon, Classical: Grigoriev Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.Qd2 O-O
9.O-O-O 1/2

B73    Sicilian: Dragon, Classical: 8.O-O
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.O-O
1/2

B73/02 Sicilian: Dragon, Classical: 8.O-O O-O 9.f4 ; *pwo 6/01 add
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.O-O O-O
9.f4 1/2

B73    Sicilian: Dragon, Classical: Richter Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.O-O O-O
9.Qd2 1/2

B73/03 Sicilian: Dragon, Classical: Richter/Bird Variation ; *pwo 5/01 add, nat, footnote 15
1.e4 c5 2.Nf3 Nc6 3.Nc3 g6 4.d4 cxd4 5.Nxd4 Bg7 6.Be3 Nf6 7.Be2 d6 8.O-O O-O
9.Qd2 Bd7 10.h3 1/2

B74    Sicilian: Dragon, Classical: 9.Nb3
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.O-O O-O
9.Nb3 1/2

B74    Sicilian: Dragon, Classical: Spielmann Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.O-O O-O
9.Nb3 Be6 10.f4 Na5 11.f5 Bc4 12.Bd3 1/2

B74    Sicilian: Dragon, Classical: Reti-Tartakower Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.O-O O-O
9.Nb3 Be6 10.f4 Qc8 1/2

B75    Sicilian: Dragon, Yugoslav Attack
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 1/2

B76    Sicilian: Dragon, Yugoslav Attack: 7...O-O
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 1/2

B76    Sicilian: Dragon, Yugoslav Attack: Rauser Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6
9.O-O-O 1/2

B76/22 Sicilian: Dragon, Yugoslav Attack: Rauser Main Line ; *pwo 5/01 add
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6
9.O-O-O d5 10.exd5 Nxd5 11.Nxc6 bxc6 12.Bd4 e5 13.Bc5 Be6 14.Ne4 Re8
15.h4 h6 16.g4 Qc7 17.g5 h5 1/2

B77    Sicilian: Dragon, Yugoslav Attack: Byrne Variation ; book, almost never played (*pwo)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6
9.Bc4 a5 1/2

B77/04 Sicilian: Dragon, Yugoslav Attack: 9...Bd7 ; (ext fm 9...Bd7) *pwo, out of eco w/ 10...Nxd4
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6
9.Bc4 Bd7 10.h4 Nxd4 11.Bxd4 (b5 12.Bb3) 1/2

B77    Sicilian: Dragon, Yugoslav Attack: (Bc4) ; (subr fm B79) *pwo, nat, this order much more common
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Bc4 Nc6
9.Bb3 Bd7 10.Qd2 1/2

B77/05 Sicilian: Dragon, Yugoslav/Uogele ; (nat Line) *pwo footnote 35, see also B35 & B78
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.Be3 Nf6 7.Bc4 O-O 8.Bb3 d6
9.f3 Bd7 10.Qd2 Nxd4 11.Bxd4 b5 12.h4 a5 13.a4 bxa4 14.Nxa4 e5 15.Be3 Be6
1/2

B78    Sicilian: Dragon, Yugoslav Attack: 10.O-O-O
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6
9.Bc4 Bd7 10.O-O-O 1/2

B78/14 Sicilian: Dragon, Yugoslav Attack: (O-O-O w/ Bxh6) ; *pwo 5/01 add
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6
9.Bc4 Bd7 10.O-O-O Rc8 11.Bb3 Ne5 12.h4 h5 13.Bh6 Bxh6 14.Qxh6 Rxc3
15.bxc3 Qc7 16.Kb1 Rc8 17.g4 a5 1/2

B78/26 Sicilian: Dragon, Yugoslav Attack: (O-O-O), Main Line ; (add) *pwo (see B35 & B77)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Bc4 Nc6
9.Bb3 Bd7 10.Qd2 Rc8 11.O-O-O Ne5 12.h4 h5 13.Bg5 Rc5 14.g4 hxg4 15.h5 Nxh5
16.Nd5 Re8 1/2

B78/06 Sicilian: Dragon, Yugoslav Attack: (O-O-O) ; *pwo 3/01 add
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Bc4 Nc6 8.f3 O-O
9.Qd2 Bd7 10.O-O-O Rc8 11.Bb3 Ne5 12.h4 Nc4 13.Bxc4 Rxc4 14.h5 Nxh5
15.g4 Nf6 16.Nb3 Re8 1/2

B78/22 Sicilian: Dragon, Yugoslav Attack: (O-O-O), Main Line ; *pwo 5/01 add, nat (early ...Nf6)
1.e4 c5 2.Nf3 d6 3.d4 Nf6 4.Nc3 cxd4 5.Nxd4 g6 6.Be3 Bg7 7.f3 O-O 8.Bc4 Nc6
9.Qd2 Bd7 10.O-O-O Rc8 11.Bb3 Ne5 12.h4 h5 13.Bg5 Rc5 14.Kb1 b5 1/2

B78/18 Sicilian: Dragon, Yugoslav Attack: (O-O-O); *pwo 3/01 add, nat: out 3.Nc3, back 11...Ne5
1.e4 c5 2.Nf3 d6 3.Nc3 Nc6 4.d4 cxd4 5.Nxd4 Nf6 6.Bc4 g6 7.Be3 Bg7 8.f3 O-O
9.Qd2 Bd7 10.Bb3 Rc8 11.O-O-O Ne5 12.h4 h5 13.Bg5 Rc5 14.f4 1/2

B79    Sicilian: Dragon, Yugoslav Attack: 12.h4 ; straight-book, seldom played (pwo)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6
9.Bc4 Bd7 10.O-O-O Qa5 11.Bb3 Rfc8 12.h4 1/2

B79/05 Sicilian: Dragon, Yugoslav Attack: (...Qa5 O-O-O) ; (add) *pwo
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Bc4 Nc6
9.Bb3 Bd7 10.Qd2 Qa5 11.O-O-O Rfc8 12.h4 Ne5 13.Kb1 Nc4 14.Bxc4 Rxc4 15.Nb3
1/2

B80    Sicilian: Scheveningen Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 1/2

;B80    Sicilian: Scheveningen: Fianchetto Variation ; (ext fm 6.g3) *pwo
;1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.g3 a6 7.Bg2 Nc6 8.O-O Qc7
;1/2

B80    Sicilian: Scheveningen: English Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be3 a6 7.Qd2 1/2

B80/09 Sicilian: Scheveningen: Variation (f3) ; *pwo 4/01 add, footnote 53
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.f3 e6 7.Be3 Be7 8.Qd2 O-O
9.g4 a6 10.O-O-O Nxd4 11.Bxd4 b5 12.Kb1 1/2

B80/03 Sicilian: Scheveningen: Fianchetto Variation ; (nat Line) *pwo
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 d6 6.g3 a6 7.Bg2 Bd7 8.O-O Nf6
9.Re1 Be7 10.Nxc6 Bxc6 11.a4 O-O 12.a5 Nd7 13.Be3 Qc7 1/2

B80    Sicilian: Scheveningen: Fianchetto (Modern Line) ; *pwo 3/01 add, nat, same as above
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.g3 a6 7.Bg2 Nf6 8.O-O d6
1/2

B81    Sicilian: Scheveningen: Keres Attack
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.g4 1/2

B81/09 Sicilian: Scheveningen: Keres Attack 7.g4 ; *pwo 4/01 add, nat fm 6.Be3, footnote 41 - Kasparov
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be3 a6 7.g4 h6 8.f4 e5
9.Nf5 h5 (10.gxh5 exf4 11.Bxf4 Nxh5 12.Nxd6+ Bxd6 13.Bxd6 Qh4+
14.Kd2 {perpetual}) 1/2

B81/27 Sicilian: Scheveningen: Keres Attack 7.h4 ; *pwo 5/01 add, nat, footnote 146, 13...Bd7 oob
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.g4 h6 7.h4 Nc6 8.Rg1 h5
9.gxh5 Nxh5 10.Bg5 Nf6 11.Qd2 Qb6 12.Nb3 a6 13.Be2 Bd7 1/2

B81/32 Sicilian: Scheveningen: Keres Attack ; (subr fm A40, nat) *pwo
1.d4 e6 2.Nf3 c5 3.e4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.g4 h6 7.g5 1/2

B82    Sicilian: Scheveningen: 6.f4
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.f4 1/2

B82    Sicilian: Scheveningen: Tal Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.f4 Nc6 7.Be3 Be7 8.Qf3
1/2

B82    Sicilian: Scheveningen: 6.f4 e6 ; (subr fm B93) *pwo
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.f4 e6 1/2

B82/18 Sicilian: Scheveningen: 6.f4 e6 7.Qf3 ; (natl Line; subr fm B93) *pwo
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.f4 e6 7.Qf3 Qb6 8.a3 Nc6
9.Nb3 Qc7 10.g4 b5 11.g5 (Nd7 12.Be3 Bb7) 1/2

B83    Sicilian: Scheveningen: 6.Be2
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 1/2

B83/04 Sicilian: Modern Scheveningen: Main Line ; *pwo (nat, subr fm B85)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 Be7 7.O-O Nc6 8.Be3 O-O
9.f4 Qc7 1/2

B83    Sicilian: Modern Scheveningen
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 Nc6 1/2

B83    Sicilian: Modern Scheveningen: Main Line
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 Nc6 7.O-O Be7 8.Be3 O-O
9.f4 1/2

B83    Sicilian: Modern Scheveningen: Main Line (with Nb3)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 Nc6 7.O-O Be7 8.Be3 O-O
9.f4 Bd7 10.Nb3 1/2

B83/09 Sicilian: Modern Scheveningen: Main Line (with Kh1) ; *pwo 3/01 add, nat 5.Nc3; in 7.O-O
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Nf6 6.Be2 e6 7.O-O Be7 8.Be3 O-O
9.f4 Bd7 10.Kh1 Nxd4 11.Bxd4 Bc6 12.Bd3 Nd7 1/2

B83/09 Sicilian: Modern Scheveningen: Main Line (with Kh1) ; *pwo 5/01 add, nat, at 6.Be3 see also B45 B54 B80 B82 B83 B85 B88 B89
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 d6 6.Be3 Nf6 7.f4 Be7 8.Be2 O-O
9.O-O Bd7 10.Kh1 Nxd4 11.Bxd4 Bc6 12.Bd3 1/2

B84    Sicilian: Scheveningen (Paulsen): Classical Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 1/2

B84/07 Sicilian: Scheveningen 7.Be3: Classical Variation ; *pwo 5/01 add, stright book, similar to B85/01 but w/out castles
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 7.Be3 Qc7 8.f4 b5
9.Bf3 Bb7 10.e5 dxe5 11.Bxb7 exd4 12.Bxa8 dxe3 13.Qf3 Ba3 14.Nd1 Bxb2
15.Nxb2 Qc3+ 1/2

B84    Sicilian: Scheveningen: Classical, Nd7 System
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 7.O-O Nbd7 1/2

B84    Sicilian: Scheveningen (Paulsen): Classical Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 7.O-O Qc7 1/2

B84/16 Sicilian: Scheveningen: Classical, ...Be7 System ; *pwo 3/01 nat, out 5...a6, back 7.O-O
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e6 7.O-O Be7 8.f4 Qc7
9.Kh1 O-O 10.Qe1 b5 11.Bf3 Bb7 12.e5 Ne8 13.f5 dxe5 14.fxe6 Bxf3
15.exf7+ Rxf7 16.Nxf3 Nd7 17.Bg5 1/2

;---------------B84 vs. B85---------------------------------
;    These two ECOs seem rather poorly distinguished. They include the
; same white and black moves in Lines swarming with transpositions. This
; may have not always been the case but it is today with Modern Lines in
; the Scheveningen.
;    Generally, when a lower and higher ECO are similar, the higher
; contains the Main Lines, and the lower, Variations taking off on their
; own from lower points on the trunk of the Main Line. This was probably
; the intention of B84 but, unless it contains some odd move like Ndb7, a
; Line is just as apt to grow back into the trunk again--or onto a main
; B85 branch from the trunk.
;    Case in point:
; 1*e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 7.O-O Be7
; 8.f4 O-O 9.Be3 Qc7 10.Qe1 b5 11.Bf3 Bb7 12.e5 dxe5 13.fxe5 Nfd7
; 14.Qg3 Kh8 15.Bh5 Kg8 [B85/01, straight book]
; 1*e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 Be7 7.O-O O-O
; 8.f4 a6 9.Be3 Qc7 10.Qe1 b5 11.Bf3 Bb7 12.e5 dxe5 13.fxe5 Nfd7
; 14.Qg3 Kh8 15.Bh5 Kg8 [B84 or B85?]
;-----------------------------------------------------------

;B85/35 Sicilian: Scheveningen: Classical Main Line ; *pwo 3/01 natl Line fm 8.a4, straight book ending
;1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 7.O-O Be7 8.a4 Nc6
;9.Be3 O-O 10.f4 Qc7 11.Kh1 Re8 12.Bf3 Rb8 13.g4 Nxd4 14.Bxd4 e5 15.fxe5
;1/2

B85    Sicilian: Scheveningen: Classical Main Line ; main book Line (pwo)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 7.O-O Be7 8.f4 O-O
9.Be3 1/2

B85/05 Sicilian: Scheveningen: Classical Main Line ; book Line (pwo)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 7.O-O Be7 8.f4 O-O
9.Be3 Nc6 10.Qe1 Nxd4 1/2

B85/01 Sicilian: Scheveningen: Classical ; *pwo 5/01 add, straight book, few matches
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 7.O-O Be7 8.f4 O-O
9.Be3 Qc7 10.Qe1 b5 11.Bf3 Bb7 12.e5 dxe5 13.fxe5 Nfd7 14.Qg3 Kh8 15.Bh5 Kg8
1/2

B85/04 Sicilian: Scheveningen: Classical ; *pwo (nat Line)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 7.O-O Nc6 8.Be3 Be7
9.f4 O-O 10.Qe1 Bd7 11.Qg3 b5 12.a3 Nxd4 13.Bxd4 Bc6 14.Kh1 Qc7 15.Rae1 Qb7
1/2

B85    Sicilian: Scheveningen: Classical (with...Qc7 &...Nc6)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 7.O-O Qc7 8.f4 Nc6
1/2

B85    Sicilian: Scheveningen: Classical
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 7.O-O Qc7 8.f4 Nc6
9.Be3 1/2

B85    Sicilian: Scheveningen: Classical Main Line
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 7.O-O Qc7 8.f4 Nc6
9.Be3 Be7 10.Qe1 O-O 1/2

B85/01 Sicilian: Scheveningen: Modern Line ; *pwo 5/01 add, nat w/ straight book ending
1.e4 c5 2.Nc3 e6 3.Nf3 a6 4.d4 cxd4 5.Nxd4 Qc7 6.Be2 Nf6 7.O-O d6 8.f4 Be7
9.Be3 O-O 10.Qe1 b5 11.Bf3 Bb7 12.e5 dxe5 13.fxe5 Nfd7 14.Qg3 1/2

; these two B85/01 Lines left together since other classifiers seem to see them
; as B84--apparently B84/07. However, in B84/07, neither King has castled

B85/01 Sicilian: Scheveningen: Modern Line ; *pwo (nat Line)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 Be7 7.O-O a6 8.f4 Qc7
9.Be3 O-O 10.Qe1 b5 11.Bf3 Bb7 12.e5 Ne8 13.Qg3 Nd7 14.Rad1 dxe5 15.fxe5 Bc5
1/2

B85/35 Sicilian: Scheveningen: Classical ; *pwo
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 Be7 7.O-O Nc6 8.Be3 O-O
9.f4 Qc7 10.Bf3 a6 11.Kh1 Rb8 12.a4 Re8 13.g4 Nxd4 14.Bxd4 1/2

B85/15 Sicilian: Scheveningen: Modern Main Line (...Bd7 Qe1) ; *pwo (nat ln)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 Be7 7.O-O Nc6 8.Be3 O-O
9.f4 Qc7 10.Kh1 Bd7 11.Qe1 a6 12.Qg3 b5 1/2

B85/23 Sicilian: Scheveningen: Classical (...b6) ; *pwo
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 Be7 7.O-O Nc6 8.Be3 O-O
9.f4 Qc7 10.Nb3 a6 11.a4 b6 12.Bf3 Rb8 13.Qe2 1/2

B85/35 Sicilian: Scheveningen: Classical (Ndb5) ; *pwo, phantom Line, see other B85/35
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 Be7 7.O-O Nc6 8.Be3 O-O
9.f4 Qc7 10.Ndb5 Qb8 11.Bf3 a6 12.Nd4 Qc7 13.Kh1 Rb8 1/2

B85/19 Sicilian: Scheveningen: Modern Main Line ; *pwo (nat Line)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 Be7 7.O-O O-O 8.f4 Nc6
9.Be3 a6 10.Kh1 Qc7 11.Qe1 Nxd4 12.Bxd4 b5 13.a3 Bb7 14.Qg3 Bc6 15.Rae1 Qb7
16.Bd3 b4 1/2

B85/14 Sicilian: Scheveningen: Modern Main Line (...Qb8) ; *pwo (nat Line)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 Be7 7.O-O O-O 8.f4 Nc6
9.Be3 Bd7 10.Kh1 a6 11.Qe1 b5 12.a3 Qb8 13.Bf3 Nxd4 1/2

B85    Sicilian: Scheveningen: Classical Main Line ; *pwo 3/01 add, nat--feeding B85/35
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.a4 e6 7.Be2 Be7 8.O-O O-O
9.f4 Nc6 10.Be3 Qc7 (11.Kh1 Re8 12.Bf3 Rb8 13.g4 Nxd4 14.Bxd4 e5 15.fxe5)
1/2

;B85    Sicilian: Scheveningen: Classical Main Line ; *pwo 3/01 add, nat--feeding B85/35
;1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.a4 Nc6 7.Be2 e6 8.O-O Be7
;9.Be3 (O-O 10.f4 Qc7 11.Kh1 Re8 12.Bf3 Rb8 13.g4 Nxd4 14.Bxd4 e5 15.fxe5)
;1/2

B85/36 Sicilian: Scheveningen: Classical Main Line ; *pwo 6/01 add, nat, most common move order
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.f4 e6 7.Be2 Be7 8.O-O O-O
9.Kh1 Qc7 10.a4 Nc6 11.Be3 Re8 12.Bf3 Rb8 13.Qd2 Bd7 1/2

B85    Sicilian: Scheveningen: Classical
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e6 7.O-O Be7 8.f4 O-O
9.a4 Nc6 10.Be3 Qc7 11.Kh1 1/2

B86    Sicilian: Sozin Attack ; (ext fm 6.Bc4) *pwo
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 a6 7.Bb3 1/2

B87    Sicilian: Sozin (with...a6 &...b5)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 a6 7.Bb3 b5 1/2

B87/12 Sicilian: Sozin (with...a6 &...b5) ; *pwo 4/01 add (trans at 7.O-O), 13.Bg5 outside eco
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 a6 7.O-O b5 8.Bb3 Be7
9.Qf3 Qc7 10.Qg3 Nc6 11.Nxc6 Qxc6 12.Re1 Bb7 13.Bg5 1/2

B88    Sicilian: Sozin: Leonhardt Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 Nc6 1/2

B88    Sicilian: Sozin: Fischer Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 Nc6 7.Bb3 Be7 8.Be3 O-O
9.f4 1/2

B89    Sicilian: Sozin: 7.Be3
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 Nc6 7.Be3 1/2

B89    Sicilian: Velimirovic Attack
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 Nc6 7.Be3 Be7 8.Qe2
1/2

B90    Sicilian: Najdorf
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 1/2

B90/10 Sicilian: Najdorf: Byrne-Sax Attack ; *pwo 4/01 nat, footnote 52 (out 6.f3, back 9.Qd2)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.f3 e5 7.Nb3 Be6 8.Be3 Be7
9.Qd2 O-O 10.O-O-O b5 11.g4 b4 12.Nd5 Bxd5 13.exd5 a5 14.Kb1 a4 1/2

B90    Sicilian: Najdorf: Adams Attack
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.h3 1/2

B90    Sicilian: Najdorf: Lipnitzky Attack
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bc4 1/2

B90    Sicilian: Najdorf: Byrne (English) Attack
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be3 1/2

B90/04 Sicilian: Najdorf: Byrne-Almasi Attack ; *pwo
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be3 e5 7.Nb3 Be6 8.Qd2 Nbd7
9.f3 (Be7 10.g4 h6 11.h4 b5 12.O-O-O Nb6 13.Qf2 Rb8 14.Kb1 Nc4) 1/2

B90/06 Sicilian: Najdorf: Byrne Attack (...Ng4) ; *pwo 5/01 add, footnote 24 (11.Bxg4, Tseitlin)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be3 Ng4 7.Bg5 h6 8.Bh4 g5
9.Bg3 Bg7 10.Be2 h5 11.Bxg4 Bxg4 12.f3 Bd7 13.Bf2 Nc6 14.Qd2 1/2

B91    Sicilian: Najdorf: Zagreb (Fianchetto) Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.g3 1/2

B91/04 Sicilian: Najdorf: Fianchetto, with 6...e5 ; *pwo 5/01 add, footnote 13 (8.Bg3 out of book)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.g3 e5 7.Nde2 Be7 8.Bg2 O-O
9.O-O Be6 1/2

B92    Sicilian: Najdorf: Opovcensky Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 1/2

B92/21 Sicilian: Najdorf: Opovcensky, Main Line ; *pwo 5/01 add, 14.f3 out of book
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e5 7.Nb3 Be7 8.O-O O-O
9.Be3 Be6 10.Qd2 Nbd7 11.a4 Rc8 12.a5 Qc7 13.Rfd1 Rfe8 14.f3 1/2

B93    Sicilian: Najdorf: 6.f4
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.f4 1/2

B93/18 Sicilian: Najdorf: 6.f4 e5 7.Nf3 ; *pwo 6/01 add (out of book w/ 11...Nc5)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.f4 e5 7.Nf3 Nbd7 8.a4 Be7
9.Bd3 O-O 10.O-O exf4 11.Kh1 Nc5 12.Bxf4 Bg4 13.Qe1 Rc8 1/2

B93/07 Sicilian: Najdorf: 6.f4 Nbd7 ; *pwo 6/01 add, footnote 39
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.f4 Nbd7 7.Be2 g6 8.O-O Bg7
9.a4 O-O 10.Kh1 Qc7 11.Bf3 1/2

B93/08 Sicilian: Najdorf: 6.f4 e5 ; *pwo 3/01 add, nat: out at 3.Nc3, back 5...a6
1.e4 c5 2.Nf3 d6 3.Nc3 Nf6 4.d4 cxd4 5.Nxd4 a6 6.f4 e5 7.Nf3 Qc7 8.Bd3 b5
9.O-O 1/2

B94    Sicilian: Najdorf: 6.Bg5 ; (note only: *pwo: add 6...Nc6 and this Line becomes B60)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 1/2

B94    Sicilian: Najdorf: Ivkov Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 Nbd7 7.Bc4 Qa5 8.Qd2 e6
9.O-O-O b5 10.Bb3 Bb7 11.Rhe1 Nc5 12.e5 1/2

B95    Sicilian: Najdorf: 6...e6
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 1/2

B95/01 Sicilian: Najdorf: 6...e6 7.Qf3 ; *pwo 5/01 add, footnote 2
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.Qf3 h6 8.Bh4 Nbd7
9.O-O-O 1/2

B96    Sicilian: Najdorf: 7.f4
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 1/2

B96    Sicilian: Najdorf: Polugayevsky Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 b5 1/2

B96    Sicilian: Najdorf: Polugayevsky, Simagin ; Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 b5 8.e5 dxe5
9.fxe5 Qc7 10.Qe2 1/2

B96/10 Sicilian: Najdorf: 7.f4 Qc7 ; *pwo 5/01 add
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Qc7 8.Qf3 b5
9.O-O-O b4 10.e5 1/2

B97    Sicilian: Najdorf: 7...Qb6
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Qb6 1/2

B97/03 Sicilian: Najdorf: 7...Qb6 8.Nb3 ; *pwo 5/01 add, footnote 12 (Kamsky - Ljobojavic, '94)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Qb6 8.Nb3 Nbd7
9.Qf3 Be7 10.O-O-O Qc7 11.Bd3 b5 12.a3 Bb7 13.Rhe1 O-O-O 14.Qe2 1/2

B97    Sicilian: Najdorf: Poisoned Pawn Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Qb6 8.Qd2 Qxb2
9.Rb1 Qa3 1/2

B97/16 Sicilian: Najdorf: Poisoned Pawn, Main Line ; *pwo 5/01 add
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Qb6 8.Qd2 Qxb2
9.Rb1 Qa3 10.f5 Nc6 11.fxe6 fxe6 12.Nxc6 bxc6 13.e5 dxe5 14.Bxf6 gxf6
15.Ne4 Be7 16.Be2 h5 17.Rb3 Qa4 18.Nxf6+ 1/2

B98    Sicilian: Najdorf: 7...Be7
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7 1/2

B98    Sicilian: Najdorf: Goteborg (Argentine) Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 h6
9.Bh4 g5 1/2

B98    Sicilian: Najdorf: Browne Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 h6
9.Bh4 Qc7 1/2

B98    Sicilian: Najdorf Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 Qc7
1/2

B99    Sicilian: Najdorf: 7...Be7, Main Line
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 Qc7
9.O-O-O Nbd7 1/2

B99/16 Sicilian: Najdorf: 7...Be7, Main Line ; *pwo 5/01 add, nat (w/ B96 7...Qc7 start)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Qc7 8.Qf3 Be7
9.O-O-O Nbd7 10.g4 b5 11.Bxf6 Nxf6 12.g5 Nd7 13.f5 Bxg5+ 1/2

C00    French Defense
1.e4 e6 1/2

C00    French: Reti (Spielmann) Variation
1.e4 e6 2.b3 1/2

C00    French: Steiner Variation
1.e4 e6 2.c4 1/2

C00    French: King's Indian Attack
1.e4 e6 2.d3 1/2

C00    French: Reversed Philidor Formation
1.e4 e6 2.d3 d5 3.Nd2 Nf6 4.Ngf3 Nc6 5.Be2 1/2

C00    French Defense
1.e4 e6 2.d4 1/2

C00    French: Schlechter Variation
1.e4 e6 2.d4 d5 3.Bd3 1/2

C00    French: Alapin Variation
1.e4 e6 2.d4 d5 3.Be3 1/2

C00    French: Steinitz Attack
1.e4 e6 2.e5 1/2

C00    French: Labourdonnais Variation
1.e4 e6 2.f4 1/2

C00    French: Pelikan Variation
1.e4 e6 2.Nc3 d5 3.f4 1/2

C00    French: Two Knights Variation
1.e4 e6 2.Nc3 d5 3.Nf3 1/2

C00    French Defense
1.e4 e6 2.Nf3 1/2

C00/11 French: Wing Gambit ; *pwo
1.e4 e6 2.Nf3 d5 3.e5 c5 4.b4 1/2

C00    French: Chigorin Variation
1.e4 e6 2.Qe2 1/2

C01    French: Exchange: Svenonius Variation
1.e4 e6 2.d4 d5 3.exd5 exd5 4.Nc3 Nf6 5.Bg5 1/2

C01/01 French: Exchange: Blackburne Variation ; added *pwo
1.e4 e6 2.d4 d5 3.exd5 exd5 4.Nf3 Be6 5.Nbd2 1/2

C01    French: Exchange: 3.Nc3 ; (add) *pwo
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.exd5 exd5 1/2

C02    French: Advance Variation
1.e4 e6 2.d4 d5 3.e5 1/2

C02    French: Advance Variation
1.e4 e6 2.d4 d5 3.e5 c5 4.c3 1/2

C02    French: Advance Variation
1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 1/2

C02    French: Advance: Paulsen Attack
1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 1/2

C02    French: Advance: Euwe Variation
1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Bd7 1/2

C02/19 French: Advance: Milner-Barry Gambit 6.a3 ; *pwo 5/01 add, footnote 105, out of book w/ 8.Be2
1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Qb6 6.a3 c4 7.Nbd2 Na5 8.Be2 1/2

C02    French: Advance: Milner-Barry Gambit
1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Qb6 6.Bd3 1/2

C02    French: Advance: Wade Variation
1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Qb6 5.Nf3 Bd7 1/2

C02    French: Advance: Steinitz Variation ; extend fm 4.dxc5 *pwo
1.e4 e6 2.d4 d5 3.e5 c5 4.dxc5 Nc6 5.Nf3 1/2

C02    French: Advance: Nimzovich System
1.e4 e6 2.d4 d5 3.e5 c5 4.Nf3 1/2

C02    French: Advance: Nimzovich Variation
1.e4 e6 2.d4 d5 3.e5 c5 4.Qg4 1/2

C03    French: Tarrasch
1.e4 e6 2.d4 d5 3.Nd2 1/2

C03    French: Tarrasch: Haberditz Variation
1.e4 e6 2.d4 d5 3.Nd2 f5 1/2

C03    French: Tarrasch: Guimard Variation
1.e4 e6 2.d4 d5 3.Nd2 Nc6 1/2

C03/04 French: Tarrasch: 3...Be7 ; *pwo 5/01 add, footnote 21
1.e4 e6 2.d4 d5 3.Nd2 Be7 4.Ngf3 Nf6 5.Bd3 c5 6.dxc5 dxe4 7.Nxe4 1/2

C04    French: Tarrasch: Guimard Main Line
1.e4 e6 2.d4 d5 3.Nd2 Nc6 4.Ngf3 Nf6 1/2

C05    French: Tarrasch: Closed Variation
1.e4 e6 2.d4 d5 3.Nd2 Nf6 1/2

C05    French: Tarrasch: Botvinnik Variation
1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3 c5 6.c3 b6 1/2

C05    French: Tarrasch: Closed Variation
1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3 c5 6.c3 Nc6 1/2

C06    French: Tarrasch: Closed, Main Line ;Variation
1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3 c5 6.c3 Nc6 7.Ne2 cxd4 8.cxd4
1/2

C06/18 French: Tarrasch: Closed, Main Line 7...Qb6 ; Variation *pwo add, nat fm ...Qb6, back ...f6, footnote 98
1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3 c5 6.c3 Nc6 7.Ne2 Qb6 8.Nf3 cxd4
9.cxd4 f6 10.exf6 Nxf6 11.O-O Bd6 12.Nc3 O-O 13.Be3 Bd7 14.a3 Be8 15.Qc2 h6
1/2

C07    French: Tarrasch: Open Variation
1.e4 e6 2.d4 d5 3.Nd2 c5 1/2

C07    French: Tarrasch: Eliskases Variation
1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 Qxd5 5.Ngf3 cxd4 6.Bc4 Qd8 1/2

C07/17 French: Tarrasch: Open Variation (Shamkovich) ; *pwo 4/01 add, footnote 99, nat (out 4.Ngf3, back 6.Bc4)
1.e4 e6 2.d4 d5 3.Nd2 c5 4.Ngf3 cxd4 5.exd5 Qxd5 6.Bc4 Qd6 7.O-O Nf6
8.Nb3 Nc6 9.Nbxd4 Nxd4 10.Nxd4 a6 11.Re1 Qc7 1/2

C08    French: Tarrasch: Open 4.exd5 exd5 ; (ext 5.Ngf3) *pwo
1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 exd5 5.Ngf3 1/2

C08/13 French: Tarrasch: Open 5...Nf6 ; *pwo 4/01 add
1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 exd5 5.Ngf3 Nf6 6.Bb5+ Bd7 7.Bxd7+ Nbxd7
8.O-O Be7 9.dxc5 Nxc5 10.Nb3 Nce4 11.Nfd4 Qd7 1/2

C08/03 French: Tarrasch: Open (Boleslavsky ...Bd7) ; *pwo 3/01 add
1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 exd5 5.Bb5+ Bd7 6.Qe2# Be7 7.dxc5 Nf6
8.Nb3 O-O 9.Be3 Re8 10.O-O-O a6 11.Bxd7 Nbxd7 1/2

C08/11 French: Tarrasch: Open (...Nf6) ; *pwo 6/01 add, nat, footnote 61
1.e4 e6 2.d4 d5 3.Nd2 c5 4.Ngf3 Nf6 5.exd5 exd5 6.Bb5+ Bd7 7.Bxd7+ Nbxd7
8.O-O Be7 9.dxc5 Nxc5 10.Re1 O-O 1/2

C09    French: Tarrasch: Open, Main Line ; Variation
1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 exd5 5.Ngf3 Nc6 1/2

C09/17 French: Tarrasch: Open, Main Line ; Variation *pwo
1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 exd5 5.Ngf3 Nc6 6.Bb5 Bd6 (7.O-O Ne7
8.dxc5 Bxc5 9.Nb3 Bd6 10.Nbd4 O-O 11.c3 Bg4 12.Qa4 Bh5 13.Bd3 h6) 1/2

C09/02 French: Tarrasch: Open (Huebner) ; *pwo
1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 exd5 5.Bb5+ Nc6 6.Ngf3 cxd4 (7.Qe2 Qe7
8.Nxd4 Qxe2 9.Kxe2 Bd7 10.N2f3 Nf6) 1/2

C09/14 French: Tarrasch: Open, Modern Main Line ; Variation *pwo 4/01 add
1.e4 e6 2.d4 d5 3.Nd2 c5 4.Ngf3 Nc6 5.exd5 exd5 6.Bb5 Bd6 7.dxc5 Bxc5
8.O-O Nge7 9.Nb3 Bd6 10.Re1 O-O 11.Bg5 Bg4 12.h3 Bh5 13.Bxc6 bxc6
14.Nbd4 Rc8 15.c4 1/2

C10    French: Paulsen Variation
1.e4 e6 2.d4 d5 3.Nc3 1/2

C10    French: Marshall Variation
1.e4 e6 2.d4 d5 3.Nc3 c5 1/2

C10    French: Fort Knox Variation
1.e4 e6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bd7 5.Nf3 Bc6 1/2

C10    French: Rubinstein Variation
1.e4 e6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 1/2

C10    French: Rubinstein: Capablanca Line
1.e4 e6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Nf3 Ngf6 6.Nxf6+ Nxf6 7.Ne5 1/2

C11    French Defense
1.e4 e6 2.d4 d5 3.Nc3 Nf6 1/2

C11    French: Steinitz Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7 5.f4 c5 6.dxc5 Nc6 1/2

C11    French: Steinitz Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7 5.f4 c5 6.Nf3 1/2

C11    French: Steinitz: Boleslavsky Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7 5.f4 c5 6.Nf3 Nc6 7.Be3 1/2

C11    French: Steinitz: Gledhill Attack
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7 5.Qg4 1/2

C11    French: Swiss Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bd3 1/2

C11    French: Burn Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 dxe4 1/2

C11/19 French: Burn Variation: Main Line ; *pwo 5/01 add, out of eco at 7...O-O, book is 7...Bd7
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 dxe4 5.Nxe4 Be7 6.Bxf6 Bxf6 7.Nf3 O-O
8.Qd2 Nd7 9.O-O-O Be7 10.Bd3 b6 11.h4 Bb7 1/2

C11/15 French: Modern Burn Variation (Balasov) ; *pwo 5/01 add, nat, foot 72 Balasov 1970
1.e4 e6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Bg5 Nbd7 6.Nf3 Be7 7.Nxf6+ Bxf6
8.h4 c5 9.Qd2 cxd4 1/2

C12    French: MacCutcheon Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 1/2

C12    French: MacCutcheon: Lasker Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Bd2 Bxc3 1/2

C12    French: MacCutcheon: Lasker Variation 8...g6
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Bd2 Bxc3 7.bxc3 Ne4 8.Qg4 g6
1/2

C12    French: MacCutcheon: Duras Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Bd2 Bxc3 7.bxc3 Ne4 8.Qg4 Kf8
9.Bc1 1/2

C12    French: MacCutcheon: Janowski Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Be3 1/2

C12    French: MacCutcheon: Bogolyubov Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.exd5 Qxd5 6.Bxf6 gxf6 7.Qd2 Qa5 1/2

C13    French: Classical
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 1/2

C13    French: Classical: Tartakower Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Ne4 1/2

C13    French: Albin-Alekhine-Chatard Attack
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.h4 1/2

C13    French: Albin-Alekhine-Chatard Attack: Maroczy Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.h4 a6 1/2

C13    French: Albin-Alekhine-Chatard Attack: Breyer Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.h4 c5 1/2

C13    French: Classical: Anderssen-Richter Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.Bxf6 Bxf6 6.e5 Be7 7.Qg4 1/2

C14    French: Classical: Steinitz Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 7.f4 1/2

C14    French: Classical: Stahlberg Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 7.f4 O-O 8.Nf3 c5
9.Qd2 Nc6 10.O-O-O c4 1/2

C14    French: Classical: Alapin Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 7.Nb5 1/2

C15    French: Winawer: Nimzovich Variation
1.e4 e6 2.d4 d5 3.Nc3 Bb4 1/2

C15    French: Winawer: Fingerslip Variation
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Bd2 1/2

C15    French: Winawer: Kondratiyev Variation
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Bd3 c5 5.exd5 Qxd5 6.Bd2 1/2

C15    French: Winawer: Alekhine (Maroczy) Gambit
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Nge2 1/2

C15    French: Winawer: Alekhine Gambit, (Alatortsev) ; Variation
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Nge2 dxe4 5.a3 Be7 6.Nxe4 Nf6 7.N2g3 O-O
8.Be2 Nc6 1/2

C15    French: Winawer: Alekhine Gambit, (Kan) ; Variation
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Nge2 dxe4 5.a3 Bxc3+ 6.Nxc3 Nc6 1/2

C16    French: Winawer: Advance Variation
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 1/2

C16    French: Winawer, Petrosian Variation
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 Qd7 1/2

C17    French: Winawer: Advance 5.a3
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 1/2

C17    French: Winawer: Advance, Bogolyubov ; Variation
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.Bd2 1/2

C17/04 French: Winawer: Advance, Russian ; Variation ; (ext fm 5.Qg4) *pwo
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.Qg4 Ne7 6.dxc5 Nbc6 7.Bd2 O-O 1/2

C18    French: Winawer: Advance Variation
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 1/2

C18/06 French: Winawer: Advance 7.h4 ; *pwo
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.h4 (Nbc6 8.h5)
1/2

C18/07 French: Winawer: Advance (without 7...Qc7) ; *pwo was C19
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.Qg4 1/2

C18/19 French: Winawer: Advance Main Line ; *pwo 5/01 add, oob w/ 14...O-O-O
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.Qg4 Qc7 8.Qxg7 Rg8
9.Qxh7 cxd4 10.Ne2 Nbc6 11.f4 Bd7 12.Qd3 dxc3 13.Qxc3 Nf5 14.Rb1 O-O-O
15.Rg1 1/2

C18    French: Winawer: Classical Variation
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Qc7 1/2

C18/02 French: Winawer: Classical Variation 7.Nf3 ; *pwo added
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Qc7 7.Nf3 1/2

C19    French: Winawer: Advance 6...Ne7
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 1/2

C19    French: Winawer: Advance, Smyslov ; Variation
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.a4 1/2

C19    French: Winawer: Advance, Main Line ; Positional Main Line
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.Nf3 1/2

C19/05 French: Winawer, Advance, Main Line ; positional (with...Qc7) ; *pwo
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Qc7 7.Nf3 Ne7 8.a4 b6
9.Bb5+ 1/2

C20    King's Pawn Game
1.e4 e5 1/2

C20    KP: Lopez Opening
1.e4 e5 2.c3 1/2

C20    Alapin's Opening
1.e4 e5 2.Ne2 1/2

C21    Centre Game
1.e4 e5 2.d4 exd4 1/2

C21    Danish Gambit
1.e4 e5 2.d4 exd4 3.c3 1/2

C21    Danish Gambit: Soerensen Defense
1.e4 e5 2.d4 exd4 3.c3 d5 1/2

C21    Danish Gambit: Schlechter Defense
1.e4 e5 2.d4 exd4 3.c3 dxc3 4.Bc4 cxb2 5.Bxb2 d5 1/2

C22    Centre Game
1.e4 e5 2.d4 exd4 3.Qxd4 Nc6 1/2

C22    Centre Game: Paulsen Attack
1.e4 e5 2.d4 exd4 3.Qxd4 Nc6 4.Qe3 1/2

C22    Centre Game: Berger Variation
1.e4 e5 2.d4 exd4 3.Qxd4 Nc6 4.Qe3 Nf6 1/2

C22    Centre Game: Kupreichik Variation
1.e4 e5 2.d4 exd4 3.Qxd4 Nc6 4.Qe3 Nf6 5.Nc3 Bb4 6.Bd2 O-O 7.O-O-O Re8
8.Bc4 d6 9.Nh3 1/2

C23    Bishop's Opening
1.e4 e5 2.Bc4 1/2

C23    Bishop's Opening: Philidor Counter-Attack
1.e4 e5 2.Bc4 c6 1/2

C23    Bishop's Opening: Calabrese Counter-Gambit
1.e4 e5 2.Bc4 f5 1/2

C23    Bishop's Opening: Classical Variation
1.e4 e5 2.Bc4 Bc5 1/2

C23    Bishop's Opening: Wing Gambit
1.e4 e5 2.Bc4 Bc5 3.b4 1/2

C23    Bishop's Opening: MacDonnell Double Gambit
1.e4 e5 2.Bc4 Bc5 3.b4 Bxb4 4.f4 1/2

C23    Bishop's Opening: Philidor Variation
1.e4 e5 2.Bc4 Bc5 3.c3 1/2

C23    Bishop's Opening: Lopez Gambit
1.e4 e5 2.Bc4 Bc5 3.Qe2 Nc6 4.c3 Nf6 5.f4 1/2

C24    Bishop's Opening: Berlin Defense
1.e4 e5 2.Bc4 Nf6 1/2

C24    Bishop's Opening: Ponziani Gambit
1.e4 e5 2.Bc4 Nf6 3.d4 1/2

;C24    Bishop's Opening: Urusov Gambit
;1.e4 e5 2.Bc4 Nf6 3.d4 exd4 4.Nf3 1/2

C24    Bishop's Opening: Urusov Gambit: Panov Variation
1.e4 e5 2.Bc4 Nf6 3.d4 exd4 4.Nf3 d5 5.exd5 Bb4+ 6.c3 Qe7+ 1/2

C24/08 Bishop's Opening: Urusov Gambit: 4...Nxe4 ; *pwo 5/01 add
1.e4 e5 2.Bc4 Nf6 3.d4 exd4 4.Nf3 Nxe4 5.Qxd4 Nf6 6.Bg5 Be7 7.Nc3 c6
8.O-O-O d5 1/2

C24/05 Bishop's Opening: 3.d3 c6 ; *pwo 5/01 add
1.e4 e5 2.Bc4 Nf6 3.d3 c6 4.Nf3 d5 5.Bb3 Bd6 6.Nc3 1/2

C24/02 Bishop's Opening: 3.d3 d5 ; *pwo
1.e4 e5 2.Bc4 Nf6 3.d3 d5 4.exd5 Nxd5 5.Nf3 Nc6 6.O-O Bg4 7.Re1 Be7 1/2

C25    Vienna Game
1.e4 e5 2.Nc3 1/2

C25    Vienna Game: Max Lange Defense
1.e4 e5 2.Nc3 Nc6 1/2

C25    Vienna Gambit
1.e4 e5 2.Nc3 Nc6 3.f4 1/2

C25    Vienna: Steinitz Gambit
1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.d4 1/2

C25    Vienna: Steinitz Gambit: Zukertort Defense
1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.d4 Qh4+ 5.Ke2 d5 1/2

C25    Vienna Gambit
1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3 1/2

C25    Vienna: Hamppe-Allgaier Gambit
1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3 g5 5.h4 g4 6.Ng5 1/2

C25    Vienna: Paulsen Variation
1.e4 e5 2.Nc3 Nc6 3.g3 1/2

C26    Vienna: Falkbeer Variation
1.e4 e5 2.Nc3 Nf6 1/2

C26    Vienna: Paulsen-Mieses Variation
1.e4 e5 2.Nc3 Nf6 3.g3 1/2

C26    Vienna Game
1.e4 e5 2.Nc3 Nf6 3.Bc4 1/2

C26/09 Vienna Game: (Bc4...Bc5) ; *pwo (nowdays, played 2.Bc4 [Adams])
1.e4 e5 2.Nc3 Nf6 3.Bc4 Bc5 4.d3 d6 5.Bg5 h6 1/2

C27    Vienna Game
1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4 1/2

C27    Vienna: Alekhine Variation
1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4 4.Qh5 Nd6 5.Bb3 Be7 6.Nf3 Nc6 7.Nxe5 1/2

C27    Vienna: Frankenstein-Dracula Variation ; reconnected 4/01
1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4 4.Qh5 Nd6 5.Bb3 Nc6 6.Nb5 g6 7.Qf3 f5 8.Qd5 Qe7
9.Nxc7+ Kd8 10.Nxa8 b6 1/2

C28    Vienna Game: 4.d3
1.e4 e5 2.Nc3 Nf6 3.Bc4 Nc6 4.d3 1/2

C29    Vienna Gambit
1.e4 e5 2.Nc3 Nf6 3.f4 d5 1/2

C29    Vienna Gambit
1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.d3 1/2

C29    Vienna Gambit: Breyer Variation
1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.Nf3 Be7 1/2

C29    Vienna Gambit: Paulsen Attack
1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.Qf3 1/2

C30    King's Gambit
1.e4 e5 2.f4 1/2

C30    KGD: Mafia Defense
1.e4 e5 2.f4 c5 1/2

C30    KGD: Classical Variation
1.e4 e5 2.f4 Bc5 1/2

C30    KGD: Classical: Heath Variation
1.e4 e5 2.f4 Bc5 3.Nf3 d6 4.b4 1/2

C30    KGD: Classical: 4.c3
1.e4 e5 2.f4 Bc5 3.Nf3 d6 4.c3 1/2

C30    KGD: Classical: Marshall Attack
1.e4 e5 2.f4 Bc5 3.Nf3 d6 4.c3 Bg4 5.fxe5 dxe5 6.Qa4+ 1/2

C30    KGD: Classical: Soldatenkov Variation
1.e4 e5 2.f4 Bc5 3.Nf3 d6 4.fxe5 1/2

C30    KGD: Classical: Hanham Variation
1.e4 e5 2.f4 Bc5 3.Nf3 d6 4.Nc3 Nd7 1/2

C30    KGD: Classical: Svenonius Variation
1.e4 e5 2.f4 Bc5 3.Nf3 d6 4.Nc3 Nf6 5.Bc4 Nc6 6.d3 Bg4 7.h3 Bxf3 8.Qxf3 exf4
1/2

C30    KGD: 2...Nf6
1.e4 e5 2.f4 Nf6 1/2

C31    KGD: Falkbeer Counter-Gambit
1.e4 e5 2.f4 d5 1/2

C31    KGD: Falkbeer Counter-Gambit
1.e4 e5 2.f4 d5 3.exd5 1/2

C31    KGD: Nimzovich Counter-Gambit
1.e4 e5 2.f4 d5 3.exd5 c6 1/2

C31    KGD: Falkbeer: 3...e4
1.e4 e5 2.f4 d5 3.exd5 e4 1/2

C31    KGD: Falkbeer: 4.d3
1.e4 e5 2.f4 d5 3.exd5 e4 4.d3 1/2

C31    KGD: Falkbeer: Morphy Gambit
1.e4 e5 2.f4 d5 3.exd5 e4 4.d3 Nf6 5.Nc3 Bb4 6.Bd2 e3 1/2

C31    KGD: Falkbeer: Nimzovich Variation
1.e4 e5 2.f4 d5 3.exd5 e4 4.Bb5+ 1/2

C31    KGD: Falkbeer: Rubinstein Variation
1.e4 e5 2.f4 d5 3.exd5 e4 4.Nc3 Nf6 5.Qe2 1/2

C31    KGD: Falkbeer: Milner-Barry Variation
1.e4 e5 2.f4 d5 3.Nc3 1/2

C31    KGD: Falkbeer: Tartakower Variation
1.e4 e5 2.f4 d5 3.Nf3 1/2

C32    KGD: Falkbeer: Main Line 7...Bf5
1.e4 e5 2.f4 d5 3.exd5 e4 4.d3 Nf6 5.dxe4 Nxe4 6.Nf3 Bc5 7.Qe2 Bf5 1/2

C32    KGD: Falkbeer: Charousek Gambit
1.e4 e5 2.f4 d5 3.exd5 e4 4.d3 Nf6 5.dxe4 Nxe4 6.Qe2 1/2

C32    KGD: Falkbeer: Charousek Variation
1.e4 e5 2.f4 d5 3.exd5 e4 4.d3 Nf6 5.dxe4 Nxe4 6.Qe2 Qxd5 7.Nd2 f5 8.g4
1/2

C32    KGD: Falkbeer: Keres Variation
1.e4 e5 2.f4 d5 3.exd5 e4 4.d3 Nf6 5.Nd2 1/2

C32    KGD: Falkbeer: Reti Variation
1.e4 e5 2.f4 d5 3.exd5 e4 4.d3 Nf6 5.Qe2 1/2

C33    King's Gambit Accepted
1.e4 e5 2.f4 exf4 1/2

C33    KGA: Bishop's Gambit
1.e4 e5 2.f4 exf4 3.Bc4 1/2

C33    KGA: Bishop's Gambit: Bledow Variation
1.e4 e5 2.f4 exf4 3.Bc4 d5 1/2

C33    KGA: Bishop's Gambit: Morphy Variation
1.e4 e5 2.f4 exf4 3.Bc4 d5 4.Bxd5 Nf6 1/2

C33    KGA: Bishop's Gambit: Lopez-Gianutio Counter-Gambit
1.e4 e5 2.f4 exf4 3.Bc4 f5 1/2

C33    KGA: Bishop's Gambit: Steinitz Defense
1.e4 e5 2.f4 exf4 3.Bc4 Ne7 1/2

C33    KGA: Bishop's Gambit: Cozio (Morphy) Defense
1.e4 e5 2.f4 exf4 3.Bc4 Nf6 1/2

C33    KGA: Bishop's Gambit: Bogolyubov Variation
1.e4 e5 2.f4 exf4 3.Bc4 Nf6 4.Nc3 1/2

C33    KGA: Bishop's Gambit: Jaenisch Variation
1.e4 e5 2.f4 exf4 3.Bc4 Nf6 4.Nc3 c6 1/2

C33    KGA: Bishop's Gambit: Chigorin's Attack ; (rem: 6.g3 else=Gifford var) *pwo
1.e4 e5 2.f4 exf4 3.Bc4 Qh4+ 4.Kf1 d5 5.Bxd5 g5 1/2

C33    KGA: Bishop's Gambit: Classical Defense
1.e4 e5 2.f4 exf4 3.Bc4 Qh4+ 4.Kf1 g5 1/2

C33    KGA: Lesser Bishop's Gambit ; (Petroff-Jaenisch-Tartakower) 
1.e4 e5 2.f4 exf4 3.Be2 1/2

C33    KGA: Keres (Mason-Steinitz) Gambit
1.e4 e5 2.f4 exf4 3.Nc3 1/2

C34    KGA: King's Knight's Gambit
1.e4 e5 2.f4 exf4 3.Nf3 1/2

C34    KGA: Fischer Defense
1.e4 e5 2.f4 exf4 3.Nf3 d6 1/2

C34/04 KGA: Fischer Defense: 4.d4 ; *pwo 5/01 add
1.e4 e5 2.f4 exf4 3.Nf3 d6 4.d4 g5 5.h4 g4 6.Ng1 Bh6 1/2

C34    KGA: Gianutio Counter-Gambit
1.e4 e5 2.f4 exf4 3.Nf3 f5 1/2

C34    KGA: Becker Defense
1.e4 e5 2.f4 exf4 3.Nf3 h6 1/2

C34    KGA: Bonsch-Osmolovsky Variation
1.e4 e5 2.f4 exf4 3.Nf3 Ne7 1/2

C34    KGA: Schallop Defense
1.e4 e5 2.f4 exf4 3.Nf3 Nf6 1/2

C35    KGA: Cunningham Defense
1.e4 e5 2.f4 exf4 3.Nf3 Be7 1/2

C35    KGA: Cunningham: Bertin Gambit
1.e4 e5 2.f4 exf4 3.Nf3 Be7 4.Bc4 Bh4+ 5.g3 1/2

C35    KGA: Cunningham: Three Pawns Gambit
1.e4 e5 2.f4 exf4 3.Nf3 Be7 4.Bc4 Bh4+ 5.g3 fxg3 6.O-O gxh2+ 7.Kh1 1/2

C35    KGA: Cunningham: Euwe Defense
1.e4 e5 2.f4 exf4 3.Nf3 Be7 4.Bc4 Nf6 1/2

C36    KGA: Abbazia Defense ; (Classical Defense, Modern Defense)
1.e4 e5 2.f4 exf4 3.Nf3 d5 1/2

C36    KGA: Abbazia Defense: Modern Variation
1.e4 e5 2.f4 exf4 3.Nf3 d5 4.exd5 Nf6 1/2

C36/13 KGA: Abbazia Defense: Modern Variation 6...Nxc6 ; *pwo 6/01 add (out of book w/ 12...Bxf3)
1.e4 e5 2.f4 exf4 3.Nf3 d5 4.exd5 Nf6 5.Bb5+ c6 6.dxc6 Nxc6 7.d4 Bd6
8.O-O O-O 9.Nbd2 Bg4 10.Nc4 Bc7 11.Bxc6 bxc6 12.Qd3 Bxf3 13.Rxf3 Nh5 1/2

C36    KGA: Abbazia Defense: Botvinnik Variation
1.e4 e5 2.f4 exf4 3.Nf3 d5 4.exd5 Nf6 5.Bb5+ c6 6.dxc6 bxc6 7.Bc4 Nd5 1/2

C36/08 KGA: Abbazia Defense: 5.Bc4 ; *pwo 6/01 add, footnote 41
1.e4 e5 2.f4 exf4 3.Nf3 d5 4.exd5 Nf6 5.Bc4 Nxd5 6.O-O Be7 7.d4 O-O
8.Bxd5 Qxd5 9.Bxf4 1/2

C36/01 KGA: Abbazia Defense (...Bd6) ; *pwo 5/01 add, nat
1.e4 e5 2.f4 d5 3.exd5 exf4 4.Nf3 Bd6 5.d4 Ne7 6.c4 1/2

C37    KGA: Rosentreter Gambit
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.d4 1/2

C37    KGA: Soerensen Gambit
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.d4 g4 5.Ne5 1/2

C37    KGA: King's Knight's Gambit
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 1/2

C37    KGA: Ghulam Kassim Gambit
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.d4 1/2

C37    KGA: MacDonnell Gambit
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Nc3 1/2

C37    KGA: Salvio Gambit
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Ne5 1/2

C37    KGA: Cochrane Gambit
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Ne5 Qh4+ 6.Kf1 f3 1/2

C37    KGA: Salvio Gambit: Anderssen Counter-Attack
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Ne5 Qh4+ 6.Kf1 Nh6 7.d4 d6 1/2

C37    KGA: Silberschmidt Gambit
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Ne5 Qh4+ 6.Kf1 Nh6 7.d4 f3 1/2

C37    KGA: Muzio Gambit
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O 1/2

C37    KGA: Muzio Gambit: Brentano Defense
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O d5 1/2

C37    KGA: Muzio Gambit: Holloway Defense
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O gxf3 6.Qxf3 Nc6 1/2

C37    KGA: Muzio Gambit: From Defense
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O gxf3 6.Qxf3 Qe7 1/2

C37    KGA: Muzio Gambit: Paulsen Variation
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O gxf3 6.Qxf3 Qf6 7.e5 Qxe5 8.d3 Bh6
9.Nc3 Ne7 10.Bd2 Nbc6 11.Rae1 1/2

C37    KGA: Double Muzio Gambit
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O gxf3 6.Qxf3 Qf6 7.e5 Qxe5 8.Bxf7+
1/2

C37    KGA: Muzio Gambit: Kling and Horwitz Counter-Attack
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O Qe7 1/2

C37    KGA: Quaade Gambit
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Nc3 1/2

C38    King's Knight's Gambit
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 Bg7 1/2

C38    KGA: Philidor Gambit
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 Bg7 5.h4 1/2

C38    KGA: Philidor Gambit: Schultz Variation
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 Bg7 5.h4 h6 6.d4 d6 7.Qd3 1/2

C38    KGA: Hanstein Gambit
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 Bg7 5.O-O 1/2

C39    King's Knight's Gambit
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 1/2

C39    KGA: Kieseritsky: Kolisch Defense
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 d6 1/2

C39    KGA: Kieseritsky: Jaenisch Variation ; Long Whip Defense, 
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 h5 6.Bc4 Rh7 7.d4 Bh6 8.Nc3 1/2

C39    KGA: Kieseritsky: Paulsen Defense
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 Bg7 1/2

C39    KGA: Kieseritsky: Berlin Defense
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 Nf6 1/2

C39    KGA: Kieseritsky: Rice Gambit
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 Nf6 6.Bc4 d5 7.exd5 Bd6 8.O-O
1/2

C39    KGA: Kieseritsky: Berlin Defense, (Riviere) ; Variation
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 Nf6 6.Nxg4 d5 1/2

C39    KGA: Kieseritsky: Salvio (Rosenthal) Defense
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 Qe7 1/2

C39    KGA: Allgaier Gambit
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ng5 1/2

C39    KGA: Allgaier: Thorold Variation
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ng5 h6 6.Nxf7 Kxf7 7.d4 1/2

C39    KGA: Allgaier: Cook Variation
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ng5 h6 6.Nxf7 Kxf7 7.d4 d5 8.Bxf4 dxe4
9.Bc4+ Kg7 10.Be5+ 1/2

C39    KGA: Allgaier: Blackburne Gambit
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ng5 h6 6.Nxf7 Kxf7 7.Nc3 1/2

C39    KGA: Allgaier: Schlechter Defense
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ng5 Nf6 1/2

C40    King's Knight Opening
1.e4 e5 2.Nf3 1/2

C40    QP Counter-Gambit: (elephant Gambit)
1.e4 e5 2.Nf3 d5 1/2

C40    QP Counter-Gambit: Maroczy Gambit
1.e4 e5 2.Nf3 d5 3.exd5 Bd6 1/2

C40    Latvian Counter-Gambit
1.e4 e5 2.Nf3 f5 1/2

C40    Latvian Gambit: 3.Bc4
1.e4 e5 2.Nf3 f5 3.Bc4 1/2

C40    Latvian: Polerio Variation
1.e4 e5 2.Nf3 f5 3.Bc4 fxe4 4.Nxe5 d5 1/2

C40    Latvian: Corkscrew Counter-Gambit
1.e4 e5 2.Nf3 f5 3.Bc4 fxe4 4.Nxe5 Nf6 1/2

C40    Latvian: Fraser Defense
1.e4 e5 2.Nf3 f5 3.Nxe5 Nc6 1/2

C40    Lettic Gambit ; *pwo 3/1 add
1.e4 e5 2.Nf3 f5 3.Nxe5 Qf6 4.d4 d6 5.Nc4 fxe4 6.Be2 Qd8 7.O-O Nf6 1/2

C40    Latvian: Nimzovich Variation
1.e4 e5 2.Nf3 f5 3.Nxe5 Qf6 4.d4 d6 5.Nc4 fxe4 6.Ne3 1/2

C40    Damiano's Defense
1.e4 e5 2.Nf3 f6 1/2

C40    Brazilian (Gunderam) Defense ; *pwo 10/99
1.e4 e5 2.Nf3 Qe7 1/2

C40    Greco Defense
1.e4 e5 2.Nf3 Qf6 1/2

C41    Philidor's Defense
1.e4 e5 2.Nf3 d6 1/2

C41    Philidor's Defense
1.e4 e5 2.Nf3 d6 3.d4 1/2

C41    Philidor: Exchange Variation
1.e4 e5 2.Nf3 d6 3.d4 exd4 1/2

C41    Philidor: Exchange Variation
1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Nxd4 1/2

C41    Philidor: Larsen Variation
1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Nxd4 g6 1/2

C41    Philidor: Exchange Variation
1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Nxd4 Nf6 1/2

C41    Philidor: Berger Variation
1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Nxd4 Nf6 5.Nc3 Be7 6.Be2 O-O 7.O-O c5 8.Nf3 Nc6
9.Bg5 Be6 10.Re1 1/2

C41    Philidor: Boden Variation
1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Qxd4 Bd7 1/2

C41    Philidor: Philidor Counter-Gambit, del Rio Attack
1.e4 e5 2.Nf3 d6 3.d4 f5 4.dxe5 fxe4 5.Ng5 d5 6.e6 1/2

C41    Philidor: Philidor Counter-Gambit, Zukertort Variation
1.e4 e5 2.Nf3 d6 3.d4 f5 4.Nc3 1/2

C41    Philidor: Hanham Variation
1.e4 e5 2.Nf3 d6 3.d4 Nd7 1/2

C41    Philidor: Hanham: Schlechter Variation
1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.Nc3 1/2

C41    Philidor: Hanham: Steiner Variation
1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.O-O Be7 6.dxe5 1/2

C41    Philidor: Nimzovich (Jaenisch) Variation
1.e4 e5 2.Nf3 d6 3.d4 Nf6 1/2

C41    Philidor: Nimzovich: Rellstab Variation
1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.dxe5 Nxe4 5.Qd5 1/2

C41    Philidor: Improved Hanham Variation
1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7 1/2

C41    Philidor: Nimzovich: Larobok Variation
1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7 5.Bc4 Be7 6.Ng5 O-O 7.Bxf7+ 1/2

C41    Philidor: Nimzovich: Sozin Variation
1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7 5.Bc4 Be7 6.O-O O-O 7.Qe2 c6 8.a4 exd4
1/2

C41    Philidor: Lopez Counter-Gambit ; (replace) *pwo
1.e4 e5 2.Nf3 d6 3.Bc4 f5 4.d4 1/2

C41    Philidor: Steinitz Variation
1.e4 e5 2.Nf3 d6 3.Bc4 Be7 4.c3 1/2

C42    Petrov's Defense
1.e4 e5 2.Nf3 Nf6 1/2

C42/01 Russian Defense: (Petroff's) ; desc chg, Line code added *pwo
1.e4 e5 2.Nf3 Nf6 3.Bc4 Nxe4 4.Nc3 1/2

C42    Petrov: Three Knights Game
1.e4 e5 2.Nf3 Nf6 3.Nc3 1/2

C42    Petrov: Paulsen Attack
1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nc4 1/2

C42    Petrov: Kaufmann Attack
1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.c4 1/2

C42    Petrov: French Attack
1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d3 1/2

C42    Petrov: Classical Attack: Marshall Variation
1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Bd6 1/2

C42    Petrov: Classical Attack: Tarrasch Variation
1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Bd6 7.O-O O-O 8.c4 Bg4
1/2

C42    Petrov: Classical Attack: Marshall Trap
1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Bd6 7.O-O O-O 8.c4 Bg4
9.cxd5 f5 10.Re1 Bxh2+ 1/2

C42    Petrov: Classical Attack: Jaenisch Variation
1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Be7 7.O-O Nc6 8.c4
1/2

C42    Petrov: Classical Attack: Chigorin Variation
1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Be7 7.O-O Nc6 8.Re1
1/2

C42    Petrov: Classical Attack: Berger Variation
1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Be7 7.O-O Nc6 8.Re1 Bg4
9.c3 f5 10.Nbd2 1/2

C42    Petrov: Classical Attack: Mason Variation
1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Be7 7.O-O O-O 1/2

C42/20 Petrov: Classical Attack: Jaenisch Variation (Kramnik) ; *pwo 4/01 add, footnote 124, nat 6...Nc6, back 8.c4 (not covered well by eco)
1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Nc6 7.O-O Be7 8.c4 Nb4
9.Be2 O-O 10.Nc3 Be6 1/2

C42    Petrov: Nimzovich Attack
1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Nc3 1/2

C42    Petrov: Cozio (Lasker) Attack
1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Qe2 1/2

C42    Petrov: Cochrane Gambit
1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nxf7 1/2

C42    Petrov: Damiano Variation
1.e4 e5 2.Nf3 Nf6 3.Nxe5 Nxe4 1/2

C42/04 Petrov: Damiano Variation: 4.Qe2 ; *pwo 5/01 add
1.e4 e5 2.Nf3 Nf6 3.Nxe5 Nxe4 4.Qe2 Qe7 5.Qxe4 d6 6.d4 dxe5 1/2

C43    Petrov: Modern (Steinitz) Attack
1.e4 e5 2.Nf3 Nf6 3.d4 1/2

C43    Petrov: Modern Attack: Main Line
1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.e5 Ne4 5.Qxd4 1/2

C43    Petrov: Urusov Gambit
1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.Bc4 1/2

C43    Petrov: Modern Attack: Symmetrical Variation
1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 1/2

C43    Petrov: Modern Attack: Trifunovic Variation
1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.O-O O-O 7.c4 Bxe5 1/2

C44    Ponziani: Steinitz Variation
1.e4 e5 2.Nf3 Nc6 3.c3 d5 4.Qa4 f6 1/2

C44    Ponziani: Fraser Defense
1.e4 e5 2.Nf3 Nc6 3.c3 Nf6 4.d4 Nxe4 5.d5 Bc5 1/2

C44/01 Green's Opening (d3) ; *pwo 3/01 add, eco footnote 1
1.e4 e5 2.Nf3 Nc6 3.d3 1/2

C44    Scotch Opening
1.e4 e5 2.Nf3 Nc6 3.d4 1/2

C44    Scotch: Goering Gambit
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.c3 1/2

C44    Scotch: Goering Gambit
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.c3 dxc3 5.Nxc3 Bb4 1/2

C44    Scotch: Goering Gambit: Bardeleben Variation
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.c3 dxc3 5.Nxc3 Bb4 6.Bc4 Nf6 1/2

C44    Scotch Gambit
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 1/2

C44    Scotch Gambit
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 Bc5 5.Ng5 1/2

C44    Scotch Gambit: Anderssen Counter-Attack ;(Paulsen, Suhle) 
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 Bc5 5.O-O d6 6.c3 Bg4 1/2

C44    Scotch: Lolli Variation ; (subr fm C45) *pwo
1.e4 e5 2.Nf3 Nc6 3.d4 Nxd4 4.Nxd4 exd4 5.Qxd4 (Ne7 6.Nc3) 1/2

C44    Konstantinopolsky Opening
1.e4 e5 2.Nf3 Nc6 3.g3 1/2

C44    Inverted Hungarian
1.e4 e5 2.Nf3 Nc6 3.Be2 1/2

C44    Inverted Hanham
1.e4 e5 2.Nf3 Nc6 3.Be2 Nf6 4.d3 d5 5.Nbd2 1/2

C45    Scotch Game				
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 1/2

C45    Scotch Game
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 1/2

C45    Scotch: Paulsen Attack
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Be3 Qf6 6.c3 Nge7 7.Bb5 1/2

C45    Scotch: Meitner Variation
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Be3 Qf6 6.c3 Nge7 7.Nc2 1/2

C45    Scotch: Blumenfeld Attack
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Be3 Qf6 6.Nb5 1/2

C45    Scotch: Potter Variation
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Nb3 1/2

C45    Scotch: Schmidt Variation
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Nf6 1/2

C45    Scotch: Mieses Variation
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Nf6 5.Nxc6 bxc6 6.e5 1/2

C45    Scotch: Pulling Counter-Attack
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Qh4 1/2

C45    Scotch: Steinitz Variation
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Qh4 5.Nc3 1/2

C46    Three Knights Game
1.e4 e5 2.Nf3 Nc6 3.Nc3 1/2

C46    Three Knights: Steinitz Variation
1.e4 e5 2.Nf3 Nc6 3.Nc3 g6 1/2

C46    Three Knights: Steinitz: Rosenthal Variation
1.e4 e5 2.Nf3 Nc6 3.Nc3 g6 4.d4 exd4 5.Nd5 1/2

C46    Four Knights: Italian Variation
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bc4 1/2

C47    Four Knights Game ; *pwo was C46
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 1/2

C47    Four Knights: Gunsberg Variation ; *pwo was C46
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.a3 1/2

C47    Four Knights: Scotch Variation
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 1/2

C47    Four Knights: Scotch Variation: 4...d6 ; (add) *pwo often catches "Reti" transpositions
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 d6 1/2

C47    Four Knights: Belgrade Gambit
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 5.Nd5 1/2

C47/05 Four Knights: Scotch: 4...exd4 5.Nxd4 ; (add) *pwo
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 5.Nxd4 1/2

C47    Four Knights: Scotch: Krause Variation
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 Bb4 5.Nxe5 1/2

C47    Four Knights: Ioseliani-Glek Variation ; (add) *pwo ECO footnote 1
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.g3 1/2

C47/01 Four Knights: Ioseliani-Glek Variation ; *pwo 6/01 add, footnote 1, out of book w/ 4...Bc5
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.g3 Bc5 5.Bg2 d6 6.d3 a6 7.O-O O-O 8.h3 Be6
1/2

C48    Four Knights: Spanish Variation
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 1/2

C48    Four Knights: Spielmann Variation
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 a6 5.Bxc6 dxc6 6.Nxe5 Nxe4 7.Nxe4 Qd4
8.O-O Qxe5 9.Re1 Be6 10.d4 Qd5 1/2

C48    Four Knights: Spanish: Classical Defense
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bc5 1/2

C48    Four Knights: Marshall Variation
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bc5 5.O-O O-O 6.Nxe5 Nd4 1/2

C48    Four Knights: Rubinstein Counter-Gambit
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4 1/2

C48    Four Knights: Rubinstein Counter-Gambit: Exchange Variation
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4 5.Nxd4 1/2

C48    Four Knights: Rubinstein Counter-Gambit: Henneberger Variation
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4 5.O-O 1/2

C49    Four Knights: Double Ruy Lopez
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 1/2

C49    Four Knights: Double Ruy Lopez
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 1/2

C49    Four Knights: Symmetrical Variation
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 1/2

C49    Four Knights: Symmetrical, Metger Unpin
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Bxc3
8.bxc3 Qe7 1/2

C49    Four Knights: Symmetrical: Capablanca Variation
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Bxc3
8.bxc3 Qe7 9.Re1 Nd8 10.d4 Bg4 1/2

C49    Four Knights: Symmetrical: Maroczy System
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Ne2 1/2

C49    Four Knights: Janowski Variation
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 Bxc3 7.bxc3 d6 8.Re1
1/2

C49    Four Knights: Nimzovich (Paulsen) Variation
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.Bxc6 1/2

C49    Four Knights: Gunsberg Counter-Attack
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.Nd5 Nxd5 7.exd5 e4 1/2

C50    King's Pawn Game
1.e4 e5 2.Nf3 Nc6 3.Bc4 1/2

C50    Rousseau Gambit ; (ext fm 3...f5) *pwo
1.e4 e5 2.Nf3 Nc6 3.Bc4 f5 4.d4 1/2

C50    Giuoco Piano
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 1/2

C50    Giuoco Pianissimo
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3 1/2

C50    Giuoco Pianissimo
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3 Nf6 1/2

C50    Giuoco Pianissimo: Italian Four Knights Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3 Nf6 5.Nc3 1/2

C50    Giuoco Pianissimo: Canal Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3 Nf6 5.Nc3 d6 6.Bg5 1/2

; ChessBase will see following Line as C55 but C50 is correct

C50/06 Giuoco Piano: Four Knights Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Nc3 Nf6 1/2

C50    Hungarian Defense
1.e4 e5 2.Nf3 Nc6 3.Bc4 Be7 1/2

C50    Hungarian Defense: Tartakower Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Be7 4.d4 exd4 5.c3 Nf6 6.e5 Ne4 1/2

C51    Evans Gambit ; (was 'Evans Gambit Declined', *pwo)
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 1/2

C51    Evans Gambit Declined: 5.a4
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bb6 5.a4 1/2

C51    Evans Gambit: Normal Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Bc5 6.d4 exd4 7.O-O d6 8.cxd4 Bb6
1/2

C51    Evans Gambit: Ulvestad Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Bc5 6.d4 exd4 7.O-O d6 8.cxd4 Bb6
9.d5 Na5 10.Bb2 1/2

C51    Evans Gambit: Paulsen Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Bc5 6.d4 exd4 7.O-O d6 8.cxd4 Bb6
9.d5 Na5 10.Bb2 Ne7 1/2

C51    Evans Gambit: Morphy Attack
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Bc5 6.d4 exd4 7.O-O d6 8.cxd4 Bb6
9.Nc3 1/2

C51    Evans Gambit
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Bc5 6.d4 exd4 7.O-O d6 8.cxd4 Bb6
9.Nc3 Bg4 1/2

C51    Evans Gambit: Stone-Ware Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Bd6 1/2

C51    Evans Gambit: Cordel Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Be7 6.d4 Na5 1/2

C52    Evans Gambit
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 d6 1/2

C52    Evans Gambit: Tartakower Attack
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 d6 7.Qb3 1/2

C52    Evans Gambit: Compromised Defense
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 exd4 7.O-O dxc3 1/2

C52    Evans Gambit
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.O-O 1/2

C52    Evans Gambit: Waller Attack
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.O-O d6 7.d4 exd4 8.Qb3
1/2

C52    Evans Gambit: Lasker Defense
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.O-O d6 7.d4 Bb6 1/2

C52    Evans Gambit: Alapin-Steinitz Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.O-O d6 7.d4 Bg4 1/2

C53    Giuoco Piano
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 1/2

C53    Giuoco Piano
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 1/2

C53    Giuoco Piano: Bird's Attack
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.b4 1/2

C53    Giuoco Piano
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.e5 d5 1/2

C53    Giuoco Piano: Anderssen Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.e5 d5 7.Bb5 Ne4 8.cxd4 Bb4+
1/2

C53    Giuoco Piano: Close Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Qe7 1/2

C53    Giuoco Piano: Eisinger Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Qe7 5.d4 Bb6 6.d5 Nb8 7.d6 1/2

C54    Giuoco Piano
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 1/2

C54    Giuoco Piano: Krause Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Bd2 Nxe4
8.Bxb4 Nxb4 9.Bxf7+ Kxf7 10.Qb3+ d5 11.Ne5+ Kf6 12.f3 1/2

C54    Giuoco Piano: Greco's Attack
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Nc3 1/2

C54    Giuoco Piano
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Nc3 Nxe4
8.O-O Bxc3 1/2

C54    Giuoco Piano: Moeller (Therkatz) Attack
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Nc3 Nxe4
8.O-O Bxc3 9.d5 1/2

C54/02 Giuoco Piano: d3 Variation ; (add) *pwo (seen by CA as C53), straight book
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d3 d6 6.b4 Bb6 7.a4 a6 8.O-O O-O
9.Nbd2 Ne7 10.Bb3 Ng6 11.Nc4 (Ba7 12.Ra2) 1/2

C54/02 Giuoco Piano: d3 Variation: Modern Main Line ; *pwo 4/01 add, footnote 9
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d3 d6 6.Nbd2 a6 7.Bb3 O-O 8.O-O Ba7
9.Nc4 1/2

C54/02 Giuoco Piano: d3 Variation: Main Line ; (add) *pwo
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d3 d6 6.O-O O-O 7.Nbd2 a6 8.Bb3 Ba7
9.h3 h6 10.Re1 Nh5 11.Nf1 1/2

; 5.d3 Games have very shallow coverage in ECO. It is limited to a single, isolated Line--
; the C54/02 "straight book" Line, which is not the one most played. These other Lines are
; coming from Modern Games so there's some new theory out there. Just as an example,
; .h3...h6 is not mentioned, nor ...Nh5, nor .Nf1...Qf6. Perhaps it's that my Volume C
; is a bit out of date.

C54/02 Giuoco Piano: d3 Variation ; *pwo 4/01 add nat
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.O-O Nf6 5.d3 d6 6.c3 O-O 7.Bb3 a6 8.Nbd2 Ba7
9.h3 h6 10.Re1 Nh5 11.Nf1 Qf6 12.Ne3 Nf4 13.Nd5 Nxd5 1/2

C55    Two Knights Defense: (Modern Bishop's Opening)
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 1/2

C55    Two Knights Defense: Keidanz Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.e5 d5 6.Bb5 Ne4 7.Nxd4 Bc5
8.Nxc6 Bxf2+ 9.Kf1 Qh4 1/2

C55    Two Knights Defense: Perreux Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.Ng5 1/2

C55    Two Knights Defense
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O 1/2

C55    Two Knights: Max Lange Attack
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Bc5 6.e5 1/2

C55    Two Knights: Max Lange Attack: Marshall Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Bc5 6.e5 d5 7.exf6 dxc4
8.Re1+ Be6 9.Ng5 Qd5 10.Nc3 Qf5 11.Nce4 1/2

C55    Two Knights Defense ; (ext fm 3...Nf6) *pwo
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Nc3 Nxe4 5.Nxe4 d5 1/2

C55    Giuoco Piano
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.O-O Bc5 5.d4 Bxd4 6.Nxd4 Nxd4 7.Bg5 d6 1/2

C56    Two Knights Defense
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Nxe4 1/2

C56    Two Knights Defense: Yurdansky Attack
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Nxe4 6.Re1 d5 7.Bxd5 Qxd5
8.Nc3 Qa5 9.Nxe4 Be6 10.Bg5 h6 11.Bh4 g5 12.Nf6+ Ke7 13.b4 1/2

C57    Two Knights Defense
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 1/2

C57    Two Knights Defense: Ulvestad Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 b5 1/2

C57    Two Knights Defense: Fritz Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Nd4 1/2

C57    Two Knights Defense: Fritz: Gruber Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Nd4 6.c3 b5 7.Bf1 Nxd5 8.Ne4
1/2

C57/10 Two Knights Defense: Fried Liver (Fegatello) Attack ; *pwo 5/01 revise
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Nxd5 6.Nxf7 1/2

;was: C57 Two Knights Defense: Wilkes Barre (Traxler) Variation
C57    Two Knights Defense: Traxler CounterAttack (Wilkes Barre) ; *pwo revise
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 Bc5 1/2

C58    Two Knights Defense
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ 1/2

C58    Two Knights Defense
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Be2
1/2

C58    Two Knights Defense: Kieseritsky Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.d3 1/2

C59    Two Knights Defense: Knorre Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6
8.Be2 h6 9.Nf3 e4 10.Ne5 Bd6 11.d4 Qc7 12.Bd2 1/2

C59    Two Knights Defense: Goering Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6
8.Be2 h6 9.Nf3 e4 10.Ne5 Qc7 1/2

C59    Two Knights Defense: Steinitz Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6
8.Be2 h6 9.Nh3 1/2

C60    Ruy Lopez (Spanish Opening)
1.e4 e5 2.Nf3 Nc6 3.Bb5 1/2

C60    Ruy Lopez: Fianchetto (Smyslov-Barnes) Defense
1.e4 e5 2.Nf3 Nc6 3.Bb5 g6 1/2

C60    Ruy Lopez: Cozio Defense
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nge7 1/2

C60    Ruy Lopez: Cozio Defense: Paulsen Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nge7 4.Nc3 g6 1/2

C61    Ruy Lopez: Bird's Defense
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nd4 1/2

C61    Ruy Lopez: Bird's Defense: Paulsen Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nd4 4.Nxd4 exd4 5.O-O Ne7 1/2

C62    Ruy Lopez: Old Steinitz Defense
1.e4 e5 2.Nf3 Nc6 3.Bb5 d6 1/2

C62/02 Ruy Lopez: Old Steinitz Defense: (d4 ...exd4) ; *pwo
1.e4 e5 2.Nf3 Nc6 3.Bb5 d6 4.d4 exd4 5.Qxd4 Bd7 6.Bxc6 Bxc6 7.Nc3 Nf6
8.Bg5 Be7 9.O-O-O O-O 10.Rhe1 Re8 1/2

C62    Ruy Lopez: Old Steinitz Defense: Semi-Duras Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 d6 4.d4 Bd7 5.c4 1/2

C62    Ruy Lopez: Old Steinitz Defense: Nimzovich Attack
1.e4 e5 2.Nf3 Nc6 3.Bb5 d6 4.d4 Bd7 5.Nc3 Nf6 6.Bxc6 1/2

C63    Ruy Lopez: Schliemann Defense
1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 1/2

C63    Ruy Lopez: Schliemann Defense: Berger Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.Nc3 1/2

C64    Ruy Lopez: Classical (Cordel) Defense
1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 1/2

C64    Ruy Lopez: Classical Defense: 4.c3
1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.c3 1/2

C64    Ruy Lopez: Cordel Gambit
1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.c3 f5 1/2

C64    Ruy Lopez: Classical Defense: Zaitsev Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.O-O Nd4 5.b4 1/2

C65    Ruy Lopez: Berlin Defense
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 1/2

C65/01 Ruy Lopez: Berlin Defense: Steinitz Variation ; *pwo 3/01 add, Steinitz/Chigorin, 1892 Wch, Havana
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 d6 5.c3 g6 6.Nbd2 Bg7 7.Nf1 O-O 8.Ba4 Nd7
9.Ne3 1/2

C65    Ruy Lopez: Berlin Defense: Duras Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 d6 5.c4 1/2

C65    Ruy Lopez: Berlin Defense: Anderssen Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 d6 5.Bxc6+ 1/2

C65    Ruy Lopez: Berlin Defense: Kaufmann Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 Bc5 5.Be3 1/2

C65    Ruy Lopez: Berlin Defense: Mortimer Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 Ne7 1/2

C65    Ruy Lopez: Berlin Defense: Nyholm Attack
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d4 exd4 5.O-O 1/2

C65    Ruy Lopez: Berlin Defense: 4.O-O
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O 1/2

C65    Ruy Lopez: Berlin Defense: Beverwijk Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Bc5 1/2

C65    Ruy Lopez: Classical Defense: Benelux Variation ; (was C64 above) *pwo
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Bc5 5.c3 O-O 6.d4 Bb6 1/2

C66    Ruy Lopez: Berlin Defense: 4.O-O d6
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O d6 1/2

C66    Ruy Lopez: Closed Berlin Defense: Wolf Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O d6 5.d4 Bd7 6.Nc3 exd4 1/2

C66    Ruy Lopez: Berlin Defense: Hedgehog Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O d6 5.d4 Bd7 6.Nc3 Be7 1/2

C66    Ruy Lopez: Closed Berlin Defense: Bernstein Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O d6 5.d4 Bd7 6.Nc3 Be7 7.Bg5 1/2

C66    Ruy Lopez: Closed Berlin Defense: Showalter Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O d6 5.d4 Bd7 6.Nc3 Be7 7.Bxc6 1/2

C66    Ruy Lopez: Berlin Defense: Tarrasch Trap
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O d6 5.d4 Bd7 6.Nc3 Be7 7.Re1 O-O 1/2

C66    Ruy Lopez: Closed Berlin Defense: Chigorin Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O d6 5.d4 Nd7 1/2

C67    Ruy Lopez: Berlin Defense: Open Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 1/2

C67/04 Ruy Lopez: Berlin Defense: Rosenthal Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 a6 1/2

C67    Ruy Lopez: Open Berlin Defense: 5...Be7
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7 1/2

C67    Ruy Lopez: Berlin Defense: Minckwitz Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7 6.dxe5 1/2

C67    Ruy Lopez: Berlin Defense: Pillsbury Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7 6.Qe2 Nd6 7.Bxc6 bxc6
8.dxe5 Nb7 9.b3 1/2

C67    Ruy Lopez: Berlin Defense: Rio de Janeiro Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7 6.Qe2 Nd6 7.Bxc6 bxc6
8.dxe5 Nb7 9.Nc3 O-O 10.Re1 Nc5 11.Nd4 Ne6 12.Be3 Nxd4 13.Bxd4 c5 1/2

C67    Ruy Lopez: Berlin Defense: Winawer Attack
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7 6.Qe2 Nd6 7.Bxc6 bxc6
8.dxe5 Nb7 9.Nd4 1/2

C67    Ruy Lopez: Open Berlin Defense: l'Hermet Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6 6.dxe5 1/2

C67/08 Ruy Lopez: Open Berlin Defense: 6.Bxc6 ; *pwo add
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6 6.Bxc6 dxc6 7.dxe5 Nf5
8.Qxd8+ Kxd8 9.Nc3 h6 1/2

C68    Ruy Lopez: Exchange Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 1/2

C68    Ruy Lopez: Exchange: Alekhine Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.d4 exd4 6.Qxd4 Qxd4 7.Nxd4 Bd7
1/2

C68    Ruy Lopez: Exchange: Keres Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.Nc3 1/2

C68    Ruy Lopez: Exchange: Romanovsky Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.Nc3 f6 6.d3 1/2

C68/12 Ruy Lopez: Exchange: Pachman-Romanishin Variation ; *pwo ('67 Game)
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O Qd6 1/2

C69    Ruy Lopez: Exchange Variation: 5.O-O
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O 1/2

C69    Ruy Lopez: Exchange: Gligoric Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O f6 1/2

C69    Ruy Lopez: Exchange: Alapin Gambit
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O Bg4 6.h3 h5 1/2

C70    Ruy Lopez: Graz Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5 5.Bb3 Bc5 1/2

C70    Ruy Lopez: Taimanov Variation ;(chase wing Accelerated counterthrust) 
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5 5.Bb3 Na5 1/2

C70    Ruy Lopez: Schliemann Defense Deferred
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 f5 1/2

C70    Ruy Lopez: Classical Defense Deferred
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Bc5 1/2

C70    Ruy Lopez: Cozio Defense Deferred
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nge7 1/2

C71    Ruy Lopez: Modern Steinitz Defense
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 1/2

C71    Ruy Lopez: Modern Steinitz Defense: Duras (Keres) Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c4 1/2

C71    Ruy Lopez: Noah's Ark Trap
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.d4 b5 6.Bb3 Nxd4 7.Nxd4 exd4 8.Qxd4 c5
1/2

C72    Ruy Lopez: Modern Steinitz Defense: 5.O-O
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.O-O 1/2

C73    Ruy Lopez: Modern Steinitz Defense: Richter Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.Bxc6+ bxc6 6.d4 1/2

C73    Ruy Lopez: Modern Steinitz Defense: Alapin Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.Bxc6+ bxc6 6.d4 f6 1/2

C74    Ruy Lopez: Modern Steinitz Defense
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 1/2

C74    Ruy Lopez: Modern Steinitz Defense: Siesta Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 f5 1/2

C74    Ruy Lopez: Siesta: Kopayev Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 f5 6.exf5 Bxf5 7.O-O 1/2

C75    Ruy Lopez: Modern Steinitz Defense
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 Bd7 1/2

C75    Ruy Lopez: Modern Steinitz Defense: Rubinstein Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 Bd7 6.d4 Nge7 1/2

; *pwo: transpositions (3...Nge7 4.c3 a6 5.Ba4 d6 6.d4 Bd7) &
; (6.O-O Nge7 7.d4) in the following can be incorrectly classified
; as C72. The Line can be found in footnote 18 of C75

C75/04 Ruy Lopez: Modern Steinitz Defense: Rubinstein-Geller Variation ; *pwo, footnote 18, '61
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 Bd7 6.d4 Nge7 7.O-O Ng6 8.d5 Nb8
9.c4 Be7 10.Nc3 O-O 11.Bxd7 Nxd7 12.Be3 Nh4 1/2

C76    Ruy Lopez: Modern Steinitz Defense: Fianchetto (Bronstein) Variation ; (ext fm 6...g6) *pwo
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 Bd7 6.d4 g6 7.O-O Bg7 1/2

C77    Ruy Lopez: Morphy Defense
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 1/2

C77    Ruy Lopez: Anderssen Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3 1/2

C77    Ruy Lopez: Morphy Defense: Duras Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3 d6 6.c4 1/2

C77    Ruy Lopez: Treybal (Bayreuth) Variation: (Exchange Deferred)
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.Bxc6 1/2

C77    Ruy Lopez: Four Knights (Tarrasch) Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.Nc3 1/2

C77    Ruy Lopez: Worrall (Alapin) Attack ; *pwo, was: Wormald
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.Qe2 1/2

C77    Ruy Lopez: Worrall Attack: Gruenfeld Variation ; *pwo, was: Wormald
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.Qe2 b5 6.Bb3 Be7 7.d4 d6 8.c3 Bg4
1/2

C78    Ruy Lopez: (...b5...d6)
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 d6 1/2

C78    Ruy Lopez: Archangelsk (counterthrust) Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 Bb7 1/2

C78    Ruy Lopez: Archangel Variation (...Bc5) ; *pwo
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 Bc5 1/2

C78/17 Ruy Lopez: Archangel Variation (...Bc5) ; *pwo 3/01 add, wanting ...Bb7
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 Bc5 7.Re1 d6 8.c3 O-O
9.d4 Bb6 10.h3 Bb7 1/2

C78    Ruy Lopez: Wing Attack
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 Be7 7.a4 1/2

C78    Ruy Lopez: Moeller Defense
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Bc5 1/2

C79    Ruy Lopez: Steinitz Defense Deferred: Russian Defense
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O d6 1/2

C79    Ruy Lopez: Steinitz Defense Deferred: Lipnitsky Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O d6 6.Bxc6+ bxc6 7.d4 Bg4 1/2

C79    Ruy Lopez: Steinitz Defense Deferred: Rubinstein Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O d6 6.Bxc6+ bxc6 7.d4 Nxe4 1/2

C79    Ruy Lopez: Steinitz Defense Deferred: Boleslavsky Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O d6 6.Bxc6+ bxc6 7.d4 Nxe4
8.Re1 f5 9.dxe5 d5 10.Nc3 1/2

C80    Ruy Lopez: Open (Tarrasch) Defense
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 1/2

C80    Ruy Lopez: Open: Schlechter Defense
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.a4 Nxd4
1/2

C80    Ruy Lopez: Open: Harksen Gambit
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.c4 1/2

C80    Ruy Lopez: Open: 8.dxe5
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5
1/2

C80    Ruy Lopez: Open: 8...Be6
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6
1/2

C80    Ruy Lopez: Open: Bernstein Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6
9.Nbd2 1/2

C80    Ruy Lopez: Open: Bernstein Variation, Karpov Gambit
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6
9.Nbd2 Nc5 10.c3 d4 11.Ng5 1/2

C80    Ruy Lopez: Open: Riga Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 exd4 1/2

C80    Ruy Lopez: Open: Tartakower Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.Qe2 1/2

C81    Ruy Lopez: Open: Howell Attack
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6
9.Qe2 1/2

C81    Ruy Lopez: Open: Howell Attack, Ekstroem Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6
9.Qe2 Be7 10.Rd1 O-O 11.c4 bxc4 12.Bxc4 Qd7 1/2

C82    Ruy Lopez: Open: Dilworth Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6
9.c3 Bc5 10.Nbd2 O-O 11.Bc2 Nxf2 1/2

C82    Ruy Lopez: Open: Motzko Attack
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6
9.c3 Bc5 10.Qd3 1/2

C82    Ruy Lopez: Open: Berlin Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6
9.c3 Nc5 1/2

C83    Ruy Lopez: Open: Classical Defense
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6
9.c3 Be7 1/2

C83    Ruy Lopez: Open: Malkin Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6
9.c3 Be7 10.Nbd2 O-O 11.Qe2 1/2

C83    Ruy Lopez: Open: Breslau Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6
9.c3 Be7 10.Re1 O-O 11.Nd4 Nxe5 1/2

C84    Ruy Lopez: Closed Centre (5...b5) ; (subr fm C78) *pwo
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 Be7 7.Nc3 1/2

C84    Ruy Lopez: Closed Defense
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 1/2

C84/01 Ruy Lopez: Closed Centre (6.d3) ; *pwo added
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d3 1/2

C84/05 Ruy Lopez: Closed Centre (7...d6) ; *pwo added
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d3 b5 7.Bb3 d6 1/2

C84/02 Ruy Lopez: Closed Centre (7...Bb7) ; *pwo added
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d3 b5 7.Bb3 Bb7 1/2

C84    Ruy Lopez: Closed: Centre Attack
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d4 1/2

C84    Ruy Lopez: Closed: Basque Gambit ; (North Spanish Variation)
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d4 exd4 7.e5 Ne4 8.c3
1/2

C85    Ruy Lopez: Exchange Variation doubly Deferred
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Bxc6 1/2

C86    Ruy Lopez: Worrall Attack
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Qe2 1/2

C86    Ruy Lopez: Worrall Attack: Solid Line
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Qe2 b5 7.Bb3 d6 1/2

C86    Ruy Lopez: Worrall Attack: sharp Line ; (ext 8.c3) *pwo
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Qe2 b5 7.Bb3 O-O 8.c3
1/2

C87    Ruy Lopez: Closed: Averbach Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 d6 1/2

C88    Ruy Lopez: Closed: Balla Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 Na5
9.Bc2 c5 10.d4 Qc7 11.a4 1/2

C88    Ruy Lopez: Closed: 7...h6 8.d4
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.d4 1/2

C88    Ruy Lopez: Trajkovic Counter-Attack
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 Bb7 1/2

C88    Ruy Lopez: Closed: 7...O-O
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 1/2

C88    Ruy Lopez: Closed: Anti-Marshall 8.a4
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.a4
1/2

C88    Ruy Lopez: Closed: 8.c3
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3
1/2

C89    Ruy Lopez: Marshall Counter-Attack
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5
1/2

C89    Ruy Lopez: Marshall: Herman Steiner Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5
9.exd5 e4 1/2

C89    Ruy Lopez: Marshall Counter-Attack
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5
9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 c6 1/2

C89    Ruy Lopez: Marshall: Main Line
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5
9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 c6 12.d4 Bd6 13.Re1 Qh4 14.g3 Qh3 1/2

C89    Ruy Lopez: Marshall: Main Line, Spassky ; Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5
9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 c6 12.d4 Bd6 13.Re1 Qh4 14.g3 Qh3
15.Be3 Bg4 16.Qd3 Rae8 17.Nd2 Re6 18.a4 Qh5 1/2

C89    Ruy Lopez: Marshall: Kevitz Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5
9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 c6 12.Bxd5 cxd5 13.d4 Bd6 14.Re3 1/2

C90    Ruy Lopez: Closed (with...d6)
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
1/2

C90    Ruy Lopez: Closed: Suetin Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.a3 1/2

C90    Ruy Lopez: Closed: Pilnik Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.d3 1/2

C91    Ruy Lopez: Closed: 9.d4
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.d4 1/2

C91    Ruy Lopez: Closed: Bogolyubov Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.d4 Bg4 1/2

C92    Ruy Lopez: Closed: 9.h3
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.h3 1/2

C92    Ruy Lopez: Closed: Keres 9...a5 Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.h3 a5 1/2

C92    Ruy Lopez: Closed: Flohr-Zaitsev System ; (Lenzerheide Variation)
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.h3 Bb7 1/2

C92/26 Ruy Lopez: Closed: Flohr-Zaitsev System ; *pwo 4/01 add, outside eco fm 10...
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.h3 Bb7 10.d4 Re8 11.Nbd2 Bf8 12.a4 h6 13.Bc2 exd4 14.cxd4 Nb4 15.Bb1 c5
16.d5 Nd7 17.Ra3 c4 1/2

C92    Ruy Lopez: Closed: Kholmov Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.h3 Be6 1/2

C92    Ruy Lopez: Closed: Ragozin-Petrosian (Keres) ; Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.h3 Nd7 1/2

C93    Ruy Lopez: Closed: Smyslov Defense
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.h3 h6 1/2

C94    Ruy Lopez: Closed: Breyer Defense
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.h3 Nb8 1/2

C95    Ruy Lopez: Closed: Breyer, Borisenko Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.h3 Nb8 10.d4 Nbd7 1/2

C95    Ruy Lopez: Closed: Breyer, Gligoric Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.h3 Nb8 10.d4 Nbd7 11.Nbd2 Bb7 12.Bc2 c5 1/2

C96    Ruy Lopez: Closed: 8...Na5
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.h3 Na5 10.Bc2 1/2

C96    Ruy Lopez: Closed: 10...c5
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.h3 Na5 10.Bc2 c5 1/2

C96    Ruy Lopez: Closed: Borisenko Defense
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.h3 Na5 10.Bc2 c5 11.d4 Nc6 1/2

C96    Ruy Lopez: Closed: Keres (...Nd7) Defense
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.h3 Na5 10.Bc2 c5 11.d4 Nd7 1/2

C97    Ruy Lopez: Closed: Chigorin Defense ; (ext 12.Nbd2) *pwo
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.h3 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2 1/2

C97    Ruy Lopez: Closed: Chigorin, Yugoslav System
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.h3 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2 Bd7 13.Nf1 Rfe8 14.Ne3 g6 1/2

C98    Ruy Lopez: Closed: Chigorin 12...Nc6
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.h3 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2 Nc6 1/2

C98    Ruy Lopez: Closed: Chigorin, Rauzer Attack
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.h3 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2 Nc6 13.dxc5 1/2

C99    Ruy Lopez: Closed: Chigorin (...cxd4)
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.h3 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2 cxd4 13.cxd4 1/2

C99/13 Ruy Lopez: Closed: Chigorin (...cxd4...Bb7) ; *pwo
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.h3 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2 cxd4 13.cxd4 Bb7 14.Nf1 Rac8 15.Bb1 d5
1/2

D00    Queen's Pawn Game
1.d4 d5 1/2

D00    Queen's Pawn: Stonewall Attack
1.d4 d5 2.e3 Nf6 3.Bd3 1/2

D00    Blackmar-Diemer Gambit ; *pwo 3/01
1.d4 d5 2.e4 dxe4 3.Nc3 1/2

D00    Lemberger Counter (Blackmar-Diemer) Gambit ; *pwo
1.d4 d5 2.e4 dxe4 3.Nc3 e5 1/2

D00    Lagenheinicke Defense ; *pwo
1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 e3 1/2

D00    Blackmar-Diemer: Teichmann Defense ; *pwo (per J.Bunch upld)
1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 Bg4 1/2

D00    Queen's Pawn: Mason Variation
1.d4 d5 2.Bf4 1/2

D00    Queen's Pawn: Mason Variation: Steinitz Counter-Gambit
1.d4 d5 2.Bf4 c5 1/2

D00    Levitsky Attack ; (Queen's Bishop Attack)
1.d4 d5 2.Bg5 1/2

D00    Queen's Pawn: Chigorin Variation
1.d4 d5 2.Nc3 1/2

D00    Blackmar-Diemer: Euwe Defense
1.d4 d5 2.Nc3 Nf6 3.e4 dxe4 4.f3 exf3 5.Nxf3 e6 1/2

D00/06 Queen's Pawn: Three Knights ; *pwo 6/01 add
1.d4 d5 2.Nc3 Nf6 3.Nf3 g6 4.Bf4 Bg7 5.e3 1/2

D00/05 Trompovsky Attack: Hodgson Variation ; (add) *pwo
1.d4 Nf6 2.Bg5 d5 3.Bxf6 exf6 4.e3 c6 5.Bd3 Bd6 6.Qf3 1/2

D00    Blackmar-Diemer: Teichmann Defense ; *pwo 3/01 nat, 1...Nf6, back in 4.f3
1.d4 Nf6 2.Nc3 d5 3.e4 dxe4 4.f3 exf3 5.Nxf3 Bg4 6.h3 Bxf3 7.Qxf3 c6
8.Be3 e6 9.Bd3 Be7 10.O-O Nbd7 11.Rf2 O-O 12.Raf1 Qb6 13.g4 e5 1/2

D00    Queen's Pawn: Hebden Variation ; *pwo 4/01 add, nat
1.d4 Nf6 2.Nf3 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 6.Be2 c5 7.Ne5 Nc6 8.O-O cxd4
9.exd4 Qb6 10.Nxc6 1/2

D01    Richter-Veresov Attack
1.d4 d5 2.Nc3 Nf6 3.Bg5 1/2

D01    Richter-Veresov Attack: Richter Variation
1.d4 d5 2.Nc3 Nf6 3.Bg5 Bf5 4.f3 1/2

D01    Richter-Veresov Attack: Veresov Variation
1.d4 d5 2.Nc3 Nf6 3.Bg5 Bf5 4.Bxf6 1/2

D02    Queen's Pawn Game
1.d4 d5 2.Nf3 1/2

D02    Queen's Pawn Game: Krause Variation
1.d4 d5 2.Nf3 c5 1/2

D02    Queen's Pawn Opening ; (including Queen's Gambit, Dutch, Catalan) *pwo 4/01 add, catchall
1.d4 d5 2.Nf3 c6 1/2

D02    Queen's Bishop Game ; (subr fm D21) *pwo
1.d4 d5 2.Nf3 e6 3.Bf4 1/2

D02    Queen's Bishop Game ; *pwo
1.d4 d5 2.Nf3 Bf5 3.Bf4 c6 4.e3 1/2

D02    Queen's Pawn Game: Chigorin Variation
1.d4 d5 2.Nf3 Nc6 1/2

D02    Queen's Pawn Game
1.d4 d5 2.Nf3 Nf6 1/2

D02/10 Queen's Pawn Game ; *pwo 5/01 add, out of book w/ Bf5
1.d4 d5 2.Nf3 Nf6 3.g3 Bf5 4.Bg2 e6 5.O-O c6 6.c4 Bd6 1/2

D02    Queen's Bishop Game
1.d4 d5 2.Nf3 Nf6 3.Bf4 1/2

D02/09 Queen's Bishop Game ; *pwo 5/01 add, nat ; footnote 50, Knezevic (6...Bd6)
1.d4 d5 2.Nf3 Nf6 3.Bf4 c5 4.e3 e6 5.c3 Nc6 6.Nbd2 Bd6 7.Bg3 1/2

D02    Queen's Bishop Game ; *pwo 5/01 add, nat
1.d4 d5 2.Nf3 Nf6 3.Bf4 e6 4.e3 c5 5.c3 1/2

D02    Queen's Bishop Game ; *pwo
1.d4 Nf6 2.Nf3 e6 3.Bf4 d5 4.e3 1/2

D02    Queen's Pawn Game: Anti-Gruenfeld ; (any non- 6.c4) *pwo
1.d4 Nf6 2.Nf3 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O d5 6.Bf4 1/2

D03    Torre Attack: Tartakower Variation
1.d4 d5 2.Nf3 Nf6 3.Bg5 1/2

D03/12 Torre Attack: Tartakower Variation ; (alt) *pwo
1.d4 d5 2.Nf3 Nf6 3.Bg5 g6 4.Nbd2 Bg7 5.e3 O-O 6.c3 Nbd7 7.Be2 Re8 8.b4 h6
1/2

D03/09 Queen's Pawn Game: Torre ; *pwo 4/01 add, nat ...Be7
1.d4 Nf6 2.Nf3 d5 3.Bg5 e6 4.e3 Be7 5.Nbd2 Nbd7 6.Bd3 c5 7.c3 b6 8.O-O Bb7
9.Ne5 Nxe5 10.dxe5 1/2

D04    Queen's Pawn Game
1.d4 d5 2.Nf3 Nf6 3.e3 1/2

D04    Queen's Pawn Game: Cobo Variation ; *pwo 4/01 add, nat, footnote 1
1.d4 Nf6 2.Nf3 d5 3.e3 g6 4.Bd3 Bg7 5.Nbd2 O-O 6.O-O 1/2

D05    Queen's Pawn Game
1.d4 d5 2.Nf3 Nf6 3.e3 e6 1/2

D05    Queen's Pawn Game
1.d4 d5 2.Nf3 Nf6 3.e3 e6 4.Bd3 1/2

D05    Queen's Pawn Game: Rubinstein (Colle-Zukertort) Variation
1.d4 d5 2.Nf3 Nf6 3.e3 e6 4.Bd3 c5 5.b3 1/2

D05    Colle System
1.d4 d5 2.Nf3 Nf6 3.e3 e6 4.Bd3 c5 5.c3 1/2

D05    Queen's Pawn Game: Zukertort Variation
1.d4 d5 2.Nf3 Nf6 3.e3 e6 4.Nbd2 c5 5.b3 1/2

D05/05 Queen's Pawn Game: Rubinstein Variation ; *pwo 5/01 add, nat
1.d4 d5 2.Nf3 e6 3.e3 Nf6 4.Bd3 c5 5.b3 Nc6 6.Bb2 Bd6 7.O-O O-O 8.Nbd2
1/2

D05    Colle System ; *pwo add, nat, feeds Line above
1.d4 c5 2.Nf3 Nf6 3.c3 e6 4.e3 d5 (5.Bd3 Nc6 6.Nbd2 Bd6 7.O-O O-O
8.dxc5 Bxc5 9.e4 Qc7) 1/2

D05    Colle System ; (subr fm A40, nat Line) *pwo
1.d4 e6 2.Nf3 c5 3.c3 Nf6 4.e3 d5 5.Bd3 Nc6 6.Nbd2 Bd6 7.O-O O-O 8.dxc5 Bxc5
9.e4 Qc7 10.Qe2 1/2

D06    QGD: Symmetrical (Austrian) Defense
1.d4 d5 2.c4 c5 1/2

D06    QGD: Grau (Sahovic) Defense
1.d4 d5 2.c4 Bf5 1/2

D06    QGD: Marshall Defense
1.d4 d5 2.c4 Nf6 1/2

D07    QGD: Chigorin Defense
1.d4 d5 2.c4 Nc6 1/2

D07/01 QGD: Chigorin: Exchange ; (add) *pwo
1.d4 d5 2.c4 Nc6 3.cxd5 Qxd5 4.e3 e5 5.Nc3 Bb4 6.Bd2 Bxc3 7.bxc3 exd4 1/2

D07    QGD: Chigorin Defense: Janowski Variation
1.d4 d5 2.c4 Nc6 3.Nc3 dxc4 4.Nf3 1/2

D07    QGD: Chigorin Defense ; *pwo 4/01 add, nat
1.d4 d5 2.c4 Nc6 3.Nf3 Bg4 4.cxd5 Bxf3 5.gxf3 Qxd5 6.e3 e5 7.Nc3 Bb4
8.Bd2 Bxc3 9.bxc3 exd4 10.cxd4 Nge7 1/2

D08    QGD: Albin Counter-Gambit
1.d4 d5 2.c4 e5 1/2

D08    QGD: Albin Counter-Gambit: Lasker Trap
1.d4 d5 2.c4 e5 3.dxe5 d4 4.e3 Bb4+ 5.Bd2 dxe3 1/2

D08    QGD: Albin Counter-Gambit
1.d4 d5 2.c4 e5 3.dxe5 d4 4.Nf3 1/2

D08    QGD: Albin Counter-Gambit: Alapin Variation
1.d4 d5 2.c4 e5 3.dxe5 d4 4.Nf3 Nc6 5.Nbd2 1/2

D08    QGD: Albin Counter-Gambit: Krenosz Variation ; (shorten *pwo)
1.d4 d5 2.c4 e5 3.dxe5 d4 4.Nf3 Nc6 5.Nbd2 Bg4 (6.h3 Bxf3 7.Nxf3 Bb4+
8.Bd2 Qe7) 1/2

D09    QGD: Albin Counter-Gambit: 5.g3
1.d4 d5 2.c4 e5 3.dxe5 d4 4.Nf3 Nc6 5.g3 1/2

D10    QGD: Slav Defense
1.d4 d5 2.c4 c6 1/2

D10    QGD: Slav Defense: Exchange Variation
1.d4 d5 2.c4 c6 3.cxd5 1/2

D10/12 QGD: Slav Defense: Exchange Variation ; *pwo 6/01 add
1.d4 d5 2.c4 c6 3.cxd5 cxd5 4.Nc3 Nf6 5.Bf4 Nc6 6.e3 a6 7.Bd3 Bg4 1/2

D10    QGD: Slav Defense: Alekhine Variation
1.d4 d5 2.c4 c6 3.Nc3 dxc4 4.e4 1/2

D10    QGD: Slav: Winawer Counter-Gambit
1.d4 d5 2.c4 c6 3.Nc3 e5 1/2

D10    QGD: Semi-Slav ; *pwo 5/01 add, catchall
1.d4 d5 2.c4 c6 3.Nc3 Nf6 4.e3 e6 1/2

D10    QGD: Slav Defense ; (alt) *pwo
1.d4 Nf6 2.c4 c6 3.Nc3 d5 4.e3 a6 1/2

D11    QGD: Slav: 3.Nf3
1.d4 d5 2.c4 c6 3.Nf3 1/2

D11    QGD: Slav: 4.e3
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3 1/2

D11    QGD: Slav: Breyer Variation
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nbd2 1/2

D11    QGD: Slav: 2...dxc4 ; *pwo 3/01
1.d4 d5 2.c4 dxc4 3.Nf3 c6 1/2

D11    QGD: Slav: 2...Bf5 ; *pwo
1.d4 d5 2.Nf3 Bf5 3.c4 e6 4.Nc3 1/2

D12    QGD: Slav: 4.e3 Bf5
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3 Bf5 1/2

D12    QGD: Slav: Exchange Variation
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3 Bf5 5.cxd5 cxd5 6.Nc3 1/2

D12    QGD: Slav: Landau Variation
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3 Bf5 5.cxd5 cxd5 6.Qb3 Qc8 7.Bd2 e6 8.Na3
1/2

D13    QGD: Slav: Exchange Variation
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.cxd5 cxd5 1/2

D13/03 QGD: Slav: Exchange Variation ; *pwo 4/01 add, footnote 12, 8.Bxd6, Ardinansyah-Hubner, 1984
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.cxd5 cxd5 5.Nc3 Nc6 6.Bf4 e6 7.e3 Bd6
8.Bxd6 Qxd6 9.Bd3 O-O 10.O-O e5 1/2

D13/11 QGD: Slav: Exchange 6...a6 ; *pwo 4/01 add, nat
1.d4 d5 2.c4 c6 3.cxd5 cxd5 4.Nf3 Nf6 5.Nc3 Nc6 6.Bf4 a6 7.e3 Bg4 8.Bd3 e6
9.h3 Bxf3 10.Qxf3 Bd6 11.Bxd6 Qxd6 1/2

D14    QGD: Slav: Exchange Variation 6.Bf4 Bf5
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.cxd5 cxd5 5.Nc3 Nc6 6.Bf4 Bf5 1/2

D14/03 QGD: Slav: Exchange, Wuss Attack ; *pwo
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.cxd5 cxd5 5.Nc3 Nc6 6.Bf4 Bf5 7.e3 e6 8.Bd3
1/2

D14    QGD: Slav: Exchange, Trifunovic Variation
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.cxd5 cxd5 5.Nc3 Nc6 6.Bf4 Bf5 7.e3 e6 8.Qb3 Bb4
1/2

D14/02 QGD: Slav: Exchange, Wuss Attack ; *pwo 6/01 add, nat, out of book w/ 8.Bd3
1.d4 d5 2.c4 c6 3.cxd5 cxd5 4.Nc3 Nf6 5.Nf3 Nc6 6.Bf4 Bf5 7.e3 e6 8.Bd3 Bxd3
9.Qxd3 Bd6 10.Bxd6 Qxd6 11.O-O O-O 1/2

D15    QGD: Slav Accepted
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 1/2

D15    QGD: Slav: 4...a6 ; *pwo (subr fm D94)
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 a6 5.e3 b5 1/2

D15    QGD: Slav Accepted
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 1/2

D15    QGD: Slav: 5.e3 (Alekhine Variation) ; (ext) *pwo
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.e3 b5 6.a4 b4 1/2

D15    QGD: Slav: Slav Gambit
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.e4 1/2

D15/07 QGD: Slav: Tolush-Geller Gambit ; (Line code) *pwo
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.e4 b5 6.e5 1/2

D15    QGD: Slav: Schlechter Variation
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 g6 1/2

D16    QGD: Slav Accepted: Alapin Variation
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 1/2

D16    QGD: Slav: Steiner Variation
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bg4 1/2

D16    QGD: Slav: Smyslov Variation
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Na6 6.e4 Bg4 1/2

D17    QGD: Slav: Czech Defense
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 1/2

D17    QGD: Slav: Krause Attack
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.Ne5 1/2

D17    QGD: Slav: Wiesbaden Variation
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.Ne5 e6 1/2

D17    QGD: Slav: Carlsbad Variation
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.Ne5 Nbd7 7.Nxc4 Qc7 8.g3 e5
1/2

D18    QGD: Slav: Dutch Variation
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.e3 1/2

D18/02 QGD: Slav: Dutch Variation ; *pwo add
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.e3 e6 7.Bxc4 Bb4 8.O-O Nbd7
9.Qe2 Bg6 10.e4 1/2

D18/10 QGD: Slav: Dutch, Ehlvest ; *pwo 5/01 add, footnote 59
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.e3 e6 7.Bxc4 Bb4 8.O-O O-O
9.Nh4 Bg4 10.f3 Bh5 11.g4 Nd5 12.Ng2 Bg6 1/2

D18    QGD: Slav: Dutch, Lasker Variation
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.e3 Na6 1/2

D19    QGD: Slav: Dutch Variation
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.e3 e6 7.Bxc4 Bb4 8.O-O
1/2

D19    QGD: Slav: Dutch Variation, Main Line
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.e3 e6 7.Bxc4 Bb4 8.O-O O-O
9.Qe2 1/2

D19/07 QGD: Slav: Dutch Variation, Main Line ;
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.e3 e6 7.Bxc4 Bb4 8.O-O O-O
9.Qe2 Nbd7 10.e4 Bg6 11.Bd3 Bh5 12.e5 Nd5 13.Ne4 1/2

D19    QGD: Slav: Dutch, Saemisch Variation
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.e3 e6 7.Bxc4 Bb4 8.O-O O-O
9.Qe2 Ne4 10.g4 1/2

D20    Queen's Gambit Accepted
1.d4 d5 2.c4 dxc4 1/2

D20    QGA: 3.e4
1.d4 d5 2.c4 dxc4 3.e4 1/2

D20    QGA: Linares Variation
1.d4 d5 2.c4 dxc4 3.e4 c5 4.d5 Nf6 5.Nc3 b5 1/2

D20/31 QGA: 3.e4 e5
1.d4 d5 2.c4 dxc4 3.e4 e5 4.Nf3 exd4 5.Bxc4 Nc6 6.O-O Be6
7.Bxe6 fxe6 (8.Qb3 Qd7 9.Qxb7 Rb8 10.Qa6 Nf6 11.Nbd2) 1/2

D21    QGA: 3.Nf3
1.d4 d5 2.c4 dxc4 3.Nf3 1/2

D22    QGA: Alekhine Defense
1.d4 d5 2.c4 dxc4 3.Nf3 a6 1/2

D22    QGA: Haberditz Variation
1.d4 d5 2.c4 dxc4 3.Nf3 a6 4.e3 b5 1/2

D22    QGA: Alekhine Defense: Alatortsev Variation
1.d4 d5 2.c4 dxc4 3.Nf3 a6 4.e3 Bg4 5.Bxc4 e6 6.d5 1/2

D23    Queen's Gambit Accepted
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 1/2

D23    QGA: Mannheim Variation
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.Qa4+ 1/2

D23/06 QGA: 4.Qc2 (Neo-Mannheim) ; (alt-subtracts from D11 & D93) *pwo
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Qc2 dxc4 5.Qxc4 1/2

; these D23 Lines can all come together; Qc2 can substitute for Qa4+

D23/06 QGA: Neo-Mannheim ; (add) *pwo
1.d4 d5 2.Nf3 Nf6 3.c4 dxc4 4.Qa4+ c6 5.Qxc4 Bf5 6.g3 e6 7.Bg2 Nbd7
8.Nc3 Be7 9.O-O O-O 10.e3 1/2

D24    QGA: 4.Nc3
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.Nc3 1/2

D24    QGA: Bogolyubov Variation
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.Nc3 a6 5.e4 1/2

D25    QGA: 4.e3
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 1/2

D25    QGA: Janowsky-Larsen Variation
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 Bg4 1/2

D25/06 QGA: Janowsky-Larsen Variation: Main Line ; *pwo 5/01 add
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 Bg4 5.Bxc4 e6 6.h3 Bh5 7.Nc3 Nbd7 8.O-O Bd6
1/2

D26    QGA: Classical Variation
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 1/2

D26    QGA: Classical Variation: 6.O-O
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O 1/2

D26    QGA: Classical: Steinitz Variation
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O cxd4 1/2

D26    QGA: Classical: Furman Variation
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.Qe2 a6 7.dxc5 Bxc5 8.O-O Nc6
9.e4 b5 10.e5 1/2

; another situation (above/below) where two Lines reach the same
; position in a different number of moves

;D26    QGA: Classical: Furman Variation (phantom Line) ; *pwo 3/01 nat fm 2...c6, back 6.Bxc4
;1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3 e6 5.Bd3 dxc4 6.Bxc4 c5 7.Qe2 a6 8.dxc5 Bxc5
;9.O-O Nc6 10.e4 b5 11.e5 1/2

D27    QGA: Classical: 6...a6
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 1/2

D27    QGA: Classical: Rubinstein Variation
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.a4 1/2

D27/17 QGA: Classical: Rubinstein Variation, Main Line ; *pwo 5/01 add, footnote 90 (Hort 12...Nf6)
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.a4 Nc6 8.Qe2 cxd4
9.Rd1 Be7 10.exd4 O-O 11.Nc3 Nd5 12.Qe4 Nf6 13.Qh4 1/2

D27    QGA: Classical: Geller Variation
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.e4 1/2

D27/22 QGA: Classical: 7.Bb3
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Bb3 Nc6 8.Nc3 Be7
1/2

D27    QGA: Classical (with Nc3) ; *pwo 4/01 add, nat
1.d4 d5 2.c4 dxc4 3.Nf3 e6 4.e3 Nf6 5.Nc3 a6 6.Bxc4 c5 7.a4 Nc6 8.O-O Be7
9.Qe2 cxd4 10.Rd1 e5 1/2

D28    QGA: Classical: 7.Qe2
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 1/2

D28    QGA: Classical: 7...b5
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 b5 1/2

D28    QGA: Classical: Flohr Variation
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 b5 8.Bb3 Nc6
9.Rd1 c4 10.Bc2 Nb4 11.Nc3 Nxc2 12.Qxc2 Bb7 13.d5 Qc7 1/2

D29    QGA: Classical: 8...Bb7
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 b5 8.Bb3 Bb7
1/2

D29    QGA: Classical: Smyslov Variation
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 b5 8.Bb3 Bb7
9.Rd1 Nbd7 10.Nc3 Bd6 1/2

D29/08 QGA: Classical: Smyslov 10...Qb8 ; *pwo 5/01 add, straight book
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 b5 8.Bb3 Bb7
9.Rd1 Nbd7 10.Nc3 Qb8 11.d5 1/2

D29/08 QGA: Classical: Smyslov Variation ; *pwo 4/01 add, nat (picks up transposition not seen by other D28/08)
1.d4 d5 2.c4 dxc4 3.Nf3 c5 4.e3 e6 5.Bxc4 Nf6 6.O-O a6 7.Qe2 b5 8.Bb3 Bb7
9.Nc3 Nbd7 10.Rd1 Qb8 11.d5 exd5 1/2

;D29/08 QGA: Classical: Smyslov Variation ; *pwo 3/01 add, nat 3...e6, back 6.O-O
;1.d4 d5 2.c4 dxc4 3.Nf3 e6 4.e3 c5 5.Bxc4 Nf6 6.O-O a6 7.Qe2 b5 8.Bb3 Bb7
;9.Nc3 Nbd7 10.Rd1 Qb8 11.d5 1/2

D30    Queen's Gambit Declined
1.d4 d5 2.c4 e6 1/2

D30    GGD: (plus Catalan & Dutch) ; *pwo 3/01 add catchall
1.d4 d5 2.c4 e6 3.Nf3 c6 1/2

D30/13 QGD: 4...c5 ; (add) *pwo
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.e3 c5 5.cxd5 exd5 6.Bb5+ Bd7 7.Bxd7+ Nbxd7
1/2

D30    QGD: Slav
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.e3 c6 5.Nbd2 1/2

D30    QGD: Slav: Semmering Variation
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.e3 c6 5.Nbd2 Nbd7 6.Bd3 c5 1/2

D30    QGD
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Bg5 1/2

D30    QGD: Capablanca-Duras Variation
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Bg5 h6 1/2

D30    QGD: Hastings Variation ; *pwo: w/ 7.Qb3 is D43 Semi-Slav Hastings below
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Bg5 h6 5.Bxf6 Qxf6 6.Nc3 c6 1/2

D30    QGD: Vienna Variation
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Bg5 Bb4+ 1/2

D30    QGD: Capablanca Variation
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nbd2 1/2

D30/06 QGD: Slav: Golombek System ; (add) *pwo: transpositions across A,D,& E (Reti,QP,Catalan))
1.d4 d5 2.c4 e6 3.Nf3 c6 4.Nbd2 Nf6 5.g3 Nbd7 6.Bg2 Bd6 7.O-O O-O
8.Qc2 Re8 (9.b3 e5 10.cxd5) 1/2

D31    QGD: 3.Nc3
1.d4 d5 2.c4 e6 3.Nc3 1/2

D31    QGD: Semi-Slav
1.d4 d5 2.c4 e6 3.Nc3 c6 1/2

D31    QGD: Semi-Slav ; *pwo 5/01 (subr fm A84)
1.d4 d5 2.c4 e6 3.Nc3 c6 4.e3 Bd6 1/2

D31    QGD: Semi-Slav: Marshall Gambit
1.d4 d5 2.c4 e6 3.Nc3 c6 4.e4 1/2

D31    QGD: Semi-Slav: Noteboom Variation
1.d4 d5 2.c4 e6 3.Nc3 c6 4.Nf3 dxc4 1/2

D31    QGD: Semi-Slav: Abrahams Variation
1.d4 d5 2.c4 e6 3.Nc3 c6 4.Nf3 dxc4 5.a4 Bb4 6.e3 b5 7.Bd2 a5 1/2

D31    QGD: Semi-Slav: Koomen Variation
1.d4 d5 2.c4 e6 3.Nc3 c6 4.Nf3 dxc4 5.a4 Bb4 6.e3 b5 7.Bd2 Qe7 1/2

D31    QGD: Charousek (Petrosian) Variation
1.d4 d5 2.c4 e6 3.Nc3 Be7 1/2

D32    QGD: Tarrasch Defense
1.d4 d5 2.c4 e6 3.Nc3 c5 1/2

D32    QGD: Tarrasch: von Hennig-Schara Gambit
1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 cxd4 1/2

D32    QGD: Tarrasch Defense: Marshall Gambit
1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.e4 1/2

D32    QGD: Tarrasch Defense
1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 1/2

D32/16 QGD: Tarrasch Defense: 6.e3 ; (add) *pwo
1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.e3 Nf6 7.Be2 1/2

D33    QGD: Tarrasch: Schlechter-Rubinstein System
1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 1/2

D33    QGD: Tarrasch: Folkestone (Swedish) Variation
1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 c4 1/2

D33    QGD: Tarrasch: Wagner Variation
1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Bg4 1/2

D34    QGD: Tarrasch: Prague Variation ; , normal position
1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O
1/2

D34    QGD: Tarrasch: Reti Variation
1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O
9.dxc5 Bxc5 10.Na4 1/2

D34    QGD: Tarrasch: Prague Variation 9.Bg5
1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O
9.Bg5 1/2

D34    QGD: Tarrasch: Bogolyubov Variation
1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O
9.Bg5 Be6 10.Rc1 c4 1/2

D34/20 QGD: Tarrasch: Bogolyubov, Modern Main Line ; (Smyslov) ; *pwo 4/01 add, nat, footnote 120
1.d4 d5 2.c4 c5 3.Nf3 e6 4.cxd5 exd5 5.Nc3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O
9.Bg5 cxd4 10.Nxd4 h6 11.Be3 Re8 12.a3 Be6 13.Kh1 Bg4 (14.f3 Bh5 15.Nxc6)
1/2

D34/20 QGD: Tarrasch: Bogolyubov (...cxd4) ; *pwo 4/01 add, nat
1.d4 d5 2.Nf3 e6 3.c4 c5 4.cxd5 exd5 5.g3 Nc6 6.Bg2 Nf6 7.Nc3 Be7 8.O-O O-O
9.Bg5 cxd4 10.Nxd4 h6 11.Be3 Re8 12.a3 Be6 (13.Kh1 Bg4 14.f3) 1/2

D34/14 QGD: Anglo-Tarrasch: Bogolyubov Variation ; *pwo 5/01 add (seen by CB as A13), nat, footnote  84
1.c4 e6 2.Nf3 d5 3.d4 c5 4.cxd5 exd5 5.g3 Nc6 6.Bg2 Nf6 7.O-O Be7 8.Nc3 O-O
9.Bg5 Be6 10.dxc5 (Bxc5 11.Rc1) 1/2

D35    QGD: 3...Nf6
1.d4 d5 2.c4 e6 3.Nc3 Nf6 1/2

D35    QGD: Exchange Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 1/2

D35    QGD: Exchange: Positional Line
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 1/2

D35    QGD: Exchange: Positional Line 5...c6
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 1/2

D35/20 QGD: Exchange: Tartakower System ; *pwo 3/01 add, nat, D58 w/out ...c6
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 Be7 6.e3 c6 1/2

D35    QGD: Exchange: Chameleon Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 Be7 6.e3 O-O 7.Bd3 Nbd7
8.Qc2 Re8 9.Nge2 Nf8 10.O-O-O 1/2

D35    QGD: Exchange: Saemisch Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Nf3 Nbd7 6.Bf4 1/2

D35/25 QGD: Exchange: Positional Line ; *pwo 6/01 add, nat, out of book with 7.e3
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.cxd5 exd5 6.Bg5 Be7 7.e3 Bf5 8.Bd3 Bxd3
9.Qxd3 Nbd7 10.O-O O-O 1/2

D35    QGD: Exchange Variation ; (alt) *pwo
1.d4 d5 2.c4 e6 3.Nc3 Be7 4.cxd5 exd5 5.Bf4 Nf6 1/2

D35    QGD: Harrwitz Attack
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bf4 1/2

D35    QGD: Exchange ; (by tempo transposition) ; (add) *pwo (a move apart)
1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 Be7 5.Nc3 d5 6.cxd5 exd5 7.Bf4 c6 8.Qc2
1/2

D36    QGD: Exchange: Positional Line (6.Qc2)
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.Qc2 1/2

D36/14 QGD: Exchange: Modern Line ; *pwo 4/01 add, nat
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 Nbd7 6.cxd5 exd5 7.Bd3 O-O
8.Nf3 Re8 9.Qc2 Nf8 10.O-O c6 11.Rae1 Ne4 12.Bxe7 Qxe7 1/2

D36/07 QGD: Exchange: Modern Line ; *pwo
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.cxd5 exd5 7.Qc2 Nbd7 8.Bd3 c6
9.Nge2 Re8 10.h3 1/2

D36    QGD: Exchange: Modern Line 5.cxd5 ; *pwo 3/01 add, nat
1.d4 d5 2.c4 e6 3.Nc3 Be7 4.Nf3 Nf6 5.cxd5 exd5 6.Bg5 c6 7.Qc2 g6
8.Bxf6 Bxf6 9.e4 dxe4 10.Qxe4+ Be6 1/2

D36/11 QGD: Exchange: Modern Line ; *pwo 4/01 add, nat
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 c6 5.Bg5 Nbd7 6.cxd5 exd5 7.e3 Be7 8.Bd3 O-O
9.Qc2 Re8 10.O-O Nf8 11.h3 Ne4 12.Bf4 f5 1/2

D36/14 QGD: Exchange: Modern Line (Markov) ; *pwo 5/01 add, nat, footnote 75
1.c4 e6 2.Nc3 d5 3.d4 Nf6 4.Bg5 Be7 5.cxd5 exd5 6.e3 Nbd7 7.Bd3 c6
8.Nge2 O-O 9.Qc2 Re8 10.O-O Nf8 11.f3 Ng6 12.Rad1 Nh5 13.Bxe7 Qxe7 1/2

D37    QGD: 4.Nf3
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Be7 1/2

D37/22 QGD: 5.Bf4 ; (add) *pwo
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 Be7 5.Bf4 O-O 6.e3 c5 7.dxc5 Bxc5 8.Qc2
1/2

D38    QGD: Ragozin Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Bb4 1/2

D38/12 QGD: Ragozin Variation ; *pwo 4/01 add, book
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Bb4 5.cxd5 exd5 6.Bg5 h6 7.Bh4 c5 8.e3 Nc6
9.dxc5 g5 10.Bg3 Ne4 1/2

D38    QGD: Ragozin: Kovacevic Variation ; *pwo
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Bb4 5.Bg5 Nbd7 6.cxd5 exd5 7.e3 c5 8.Bd3 Qa5
9.Qc2 c4 10.Bf5 O-O 11.O-O Re8 12.Nd2 g6 13.Bh3 1/2

D38/14 QGD: Ragozin Variation ; *pwo 4/01 add, nat, foot 72
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 d5 5.cxd5 exd5 6.Bg5 h6 7.Bxf6 Qxf6
8.Qa4+ Nc6 9.e3 O-O 10.Be2 a6 11.O-O Be6 12.Qc2 1/2

D38    QGD: Ragozin: Marshall Variation ; *pwo 3/01 add, nat (Lasker-Marshall, Cleveland, 1923)
1.d4 Nf6 2.Nf3 e6 3.c4 d5 4.Nc3 Bb4 5.Bg5 h6 6.Bxf6 Qxf6 7.e3 O-O 8.Rc1 dxc4
9.Bxc4 c5 10.O-O cxd4 11.exd4 1/2

D39    QGD: Ragozin: Vienna Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Bb4 5.Bg5 dxc4 1/2

D39/09 QGD: Ragozin: Vienna Variation, Main Line ; *pwo add, nat, footnote 47, most common move order
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 dxc4 5.e4 Bb4 6.Bg5 c5 7.Bxc4 cxd4
8.Nxd4 Bxc3+ 9.bxc3 Qa5 10.Nb5 a6 11.Nd6+ Ke7 12.Qd2 1/2

D40    QGD: Semi-Tarrasch Defense
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 1/2

D40/11 QGD: Semi-Tarrasch: Exchange Variation ; *pwo (subr fm B14/D42)
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.e3 cxd4 6.exd4 Be7 7.Bd3 dxc4
8.Bxc4 O-O 9.O-O Nc6 10.a3 a6 1/2

D40    QGD: Semi-Tarrasch: Symmetrical Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.e3 Nc6 6.Bd3 Bd6 7.O-O O-O 1/2

D41    QGD: Semi-Tarrasch: 5.cxd5
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.cxd5 1/2

D41/32 QGD: Semi-Tarrasch (with e3) ; (ext to subtract fm E54) *pwo
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.cxd5 Nxd5 6.e3 Be7 7.Bc4 cxd4
8.exd4 Nc6 9.O-O O-O 10.Re1 1/2

D41    QGD: Semi-Tarrasch: Kmoch Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.cxd5 Nxd5 6.e4 Nxc3 7.bxc3 cxd4
8.cxd4 Bb4+ 9.Bd2 Bxd2+ 10.Qxd2 O-O 11.Bb5 1/2

D41    QGD: Semi-Tarrasch: San Sebastian Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.cxd5 Nxd5 6.e4 Nxc3 7.bxc3 cxd4
8.cxd4 Bb4+ 9.Bd2 Qa5 1/2

D41    QGD: Semi-Tarrasch: Modern Line ; (subtracts from A14) *pwo nat
1.c4 Nf6 2.Nf3 e6 3.g3 c5 4.Bg2 d5 5.O-O Nc6 6.d4 Be7 7.cxd5 Nxd5 8.Nc3 O-O
1/2

D42    QGD: Semi-Tarrasch: 7.Bd3
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.cxd5 Nxd5 6.e3 Nc6 7.Bd3 1/2

D42/01 QGD: Semi-Tarrasch: 7.Bd3 Be7
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.cxd5 Nxd5 6.e3 Nc6 7.Bd3 Be7 1/2

D42    QGD: Semi-Tarrasch: 3...c5 ; *pwo (subr fm B14,E54,D40,D32) nat
1.d4 d5 2.c4 e6 3.Nc3 c5 4.e3 Nf6 5.Nf3 cxd4 6.exd4 Be7 7.cxd5 Nxd5
8.Bd3 Nc6 9.O-O O-O 10.Re1 Bf6 11.Be4 Nce7 12.Ne5 Nc6 13.Qd3 h6 1/2

D42    QGD: Semi-Tarrasch: 3...c5 ; *pwo (subr fm B14,E54,D40,D32) nat
1.d4 d5 2.c4 e6 3.Nc3 c5 4.e3 Nf6 5.Nf3 cxd4 6.exd4 Be7 7.cxd5 Nxd5
8.Bd3 Nc6 9.O-O O-O 10.Re1 Nf6 11.a3 b6 1/2

D43    QGD: Semi-Slav
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 1/2

D43    QGD: Semi-Slav ; (add) *pwo
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 h6 6.Bxf6 Qxf6 7.e3 1/2

D43    QGD: Semi-Slav: Hastings Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 h6 6.Bxf6 Qxf6 7.Qb3 1/2

D44    QGD: Semi-Slav: 5.Bg5 dxc4
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 dxc4 1/2

D44    QGD: Semi-Slav: Botvinnik System ; (anti-Meran) ; (ext fm 6.e4) *pwo
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 dxc4 6.e4 b5 1/2

D44/06 QGD: Semi-Slav: Botvinnik System ; (anti-Meran with a4) ; (add) *pwo
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 dxc4 6.e4 b5 7.a4 1/2

D44    QGD: Semi-Slav: Ekstrom Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 dxc4 6.e4 b5 7.e5 h6 8.Bh4 g5
9.exf6 gxh4 10.Ne5 1/2

D44    QGD: Semi-Slav: Anti-Meran Gambit
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 dxc4 6.e4 b5 7.e5 h6 8.Bh4 g5
9.Nxg5 1/2

D44    QGD: Semi-Slav: Anti-Meran, Lilienthal ; Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 dxc4 6.e4 b5 7.e5 h6 8.Bh4 g5
9.Nxg5 hxg5 10.Bxg5 Nbd7 11.g3 1/2

D44    QGD: Semi-Slav: Anti-Meran, Alatortsev System
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 dxc4 6.e4 b5 7.e5 h6 8.Bh4 g5
9.Nxg5 Nd5 1/2

D44/05 QGD: Semi-Slav: Anti-Meran 4...dxc4 ; *pwo
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 dxc4 5.e4 Bb4 6.Bg5 b5 7.a4 c6 8.e5 h6
9.exf6 hxg5 10.fxg7 Rg8 1/2

D44/07 QGD: Semi-Slav: Anti-Meran, Denker ; Variation ; *pwo (1945)
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6 5.Bg5 dxc4 6.e4 b5 7.e5 h6 8.Bh4 g5
9.Nxg5 hxg5 10.Bxg5 Nbd7 11.exf6 Bb7 12.g3 c5 13.d5 Qb6 14.Bg2 O-O-O
15.O-O b4 16.Na4 Qb5 17.a3 Nb8 18.axb4 cxb4 19.Qg4 Bxd5 20.Rfc1 1/2

D45    QGD: Semi-Slav: 5.e3
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 1/2

D45    QGD: Semi-Slav: Accelerated Meran ; (Alekhine Variation)
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 a6 1/2

D45    QGD: Semi-Slav: 5...Nd7
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 1/2

D45    QGD: Semi-Slav: Rubinstein (Anti-Meran) System
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Ne5 1/2

D45    QGD: Semi-Slav: Stoltz Variation ; (add) *pwo
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Qc2 Bd6 7.Be2 O-O 8.O-O
1/2

D45    QGD: Semi-Slav: Stonewall Defense
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Ne4 6.Bd3 f5 1/2

D46    QGD: Semi-Slav: 6.Bd3
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 1/2

D46    QGD: Semi-Slav: Romih Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 Bb4 1/2

D46    QGD: Semi-Slav: Chigorin Defense
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 Bd6 1/2

D46    QGD: Semi-Slav: Bogolyubov Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 Be7 1/2

D46    QGD: Semi-Slav: Botvinnik Variation (...Nbd7) ; *pwo 4/01 add, D30 move order, Botvinnik-Riumin, 1931
1.d4 d5 2.c4 e6 3.Nf3 c6 4.e3 Nf6 5.Bd3 Nbd7 6.O-O Bd6 7.Nbd2 O-O 8.e4 e5
9.cxd5 cxd5 10.exd5 (exd4 11.Ne4 Nxe4) 1/2

D46/24 QGD: Semi-Slav (Qc2/Bd3) ; (add, natural Line) *pwo
1.d4 d5 2.c4 c6 3.Nc3 Nf6 4.e3 e6 5.Nf3 Nbd7 6.Qc2 Bd6 7.Bd3 O-O 8.O-O dxc4
9.Bxc4 Qe7 10.h3 1/2

D46    QGD: Semi-Slav (without Nc3) ; (add, natural Line) *pwo
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3 e6 5.Nbd2 Nbd7 6.Bd3 Bd6 7.O-O O-O 8.e4 dxe4
9.Nxe4 Nxe4 10.Bxe4 h6 11.b3 Nf6 1/2

D46/14 QGD: Semi-Slav (Qc2/Bd3) ; *pwo 4/01 add, nat
1.d4 d5 2.Nf3 c6 3.c4 e6 4.e3 Nf6 5.Nc3 Nbd7 6.Qc2 Bd6 7.Bd3 O-O 8.O-O dxc4
9.Bxc4 b5 10.Be2 Bb7 1/2

D46/22 QGD: Semi-Slav (Qc2/Bd3) ; (add, natural Line) *pwo
1.d4 d5 2.Nf3 Nf6 3.c4 c6 4.Nc3 e6 5.e3 Nbd7 6.Qc2 Bd6 7.Bd3 O-O 8.O-O dxc4
9.Bxc4 Qe7 10.Bd2 1/2

D46/19 QGD: Semi-Slav (Qc2/Be2) ; *pwo 5/01 add, nat
1.Nf3 d5 2.c4 c6 3.e3 Nf6 4.Nc3 e6 5.Qc2 Nbd7 6.d4 Bd6 7.Be2 O-O 8.O-O dxc4
9.Bxc4 a6 10.Rd1 Qe7 1/2

D47    QGD: Semi-Slav: 7.Bc4
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 1/2

D47    QGD: Semi-Slav: Meran Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 1/2

D47    QGD: Semi-Slav: Neo-Meran (Lundin Variation)
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 b4
1/2

D47    QGD: Semi-Slav: Meran, Wade Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 Bb7
1/2

D47/30 QGD: Semi-Slav: Meran, Wade Variation 9.e4 ; *pwo 5/01 add
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 Bb7
9.e4 b4 10.Na4 c5 11.e5 Nd5 12.O-O cxd4 13.Re1 g6 14.Bg5 1/2

D47/18 QGD: Semi-Slav: Meran, Wade Variation 9.O-O ; *pwo 5/01 add
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 Bb7
9.O-O b4 10.Ne4 Be7 11.Nxf6+ Nxf6 12.e4 O-O 13.Qe2 1/2

D48    QGD: Semi-Slav: Meran 8...a6
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6
1/2

D48    QGD: Semi-Slav: Meran, Pirc Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6
9.e4 b4 1/2

D48    QGD: Semi-Slav: Meran, Reynold's Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6
9.e4 c5 10.d5 1/2

D48    QGD: Semi-Slav: Meran, Old Main Line
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6
9.e4 c5 10.e5 1/2

D48/23 QGD: Semi-Slav: Meran, Old Main Line ; *pwo 5/01 add, nat
1.d4 Nf6 2.c4 c6 3.Nf3 d5 4.Nc3 e6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6
9.e4 c5 10.e5 Ng4 1/2

D49    QGD: Semi-Slav: Meran, Blumenfeld Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6
9.e4 c5 10.e5 cxd4 11.Nxb5 1/2

D49    QGD: Semi-Slav: Meran, Rabinovich Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6
9.e4 c5 10.e5 cxd4 11.Nxb5 Ng4 1/2

D49    QGD: Semi-Slav: Meran, Stahlberg Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6
9.e4 c5 10.e5 cxd4 11.Nxb5 Nxe5 12.Nxe5 axb5 13.Qf3 1/2

D49    QGD: Semi-Slav: Meran, Rellstab Attack
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6
9.e4 c5 10.e5 cxd4 11.Nxb5 Nxe5 12.Nxe5 axb5 13.O-O Qd5 14.Qe2 Ba6 15.Bg5
1/2

D50    QGD: 4.Bg5
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 1/2

D50    QGD: Been-Koomen Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 c5 1/2

D50    QGD: Semi-Tarrasch
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 c5 5.cxd5 1/2

D50    QGD: Canal (Venice) Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 c5 5.cxd5 Qb6 1/2

D50    QGD: Semi-Tarrasch: Krause Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 c5 5.Nf3 cxd4 6.Nxd4 e5 7.Ndb5 a6 8.Qa4
1/2

D50    QGD: Semi-Tarrasch: Primitive Pillsbury Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 c5 5.Nf3 cxd4 6.Qxd4 1/2

D51    QGD: 4.Bg5 Nbd7
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 1/2

D51    QGD
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 1/2

D51    QGD: 5...c6
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 1/2

D51    QGD: Capablanca: Anti-Cambridge Springs Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.a3 1/2

D51    QGD: Manhattan Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 Bb4 1/2

D51    QGD: Alekhine Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.Nf3 c6 6.e4 1/2

D52    QGD
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 1/2

D52    QGD: Cambridge Springs Defense
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 Qa5 1/2

D52    QGD: Cambridge Springs Defense: 7.cxd5
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 Qa5 7.cxd5 1/2

D52    QGD: Cambridge Springs Defense: Yugoslav Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 Qa5 7.cxd5 Nxd5 1/2

D52    QGD: Cambridge Springs Defense: Capablanca Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 Qa5 7.Bxf6 1/2

D52    QGD: Cambridge Springs Defense: Rubinstein Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 Qa5 7.Nd2 dxc4 1/2

D52    QGD: Cambridge Springs Defense: Bogoljubow Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 Qa5 7.Nd2 Bb4 8.Qc2
1/2

D52    QGD: Cambridge Springs Defense: Argentine Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 Qa5 7.Nd2 Bb4 8.Qc2 O-O
9.Bh4 1/2

D53    QGD: 4.Bg5 Be7
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 1/2

D53/01 QGD: 4.Bg5 Be7 ; *pwo 6/01 add, subr fm D59
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.Nf3 O-O 1/2

D53/10 QGD: (...Nbd7) ; *pwo 3/01 add, nat out 5...Nbd7, footnote 56
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 Nbd7 6.Nf3 c6 7.Bd3 dxc4 8.Bxc4 Nd5
9.Bxe7 Qxe7 10.O-O Nxc3 11.bxc3 e5 12.e4 1/2

D53    QGD: Lasker Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 Ne4 1/2

D53    QGD: 4.Bg5 Be7 5.e3 O-O
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 1/2

D54    QGD: Anti-Neo-Orthodox Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Rc1 1/2

D55    QGD: 6.Nf3
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 1/2

D55    QGD: Pillsbury Attack
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 b6 7.Bd3 Bb7 8.cxd5 exd5
9.Ne5 1/2

D55    QGD: Neo-Orthodox Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 1/2

D55    QGD: Neo-Orthodox Variation: 7.Bh4
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 1/2

D55    QGD: Petrosian Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bxf6 Bxf6 8.Rc1 c6
9.Bd3 Nd7 10.O-O dxc4 11.Bxc4 1/2

D55    QGD: Neo-Orthodox Accelerated 5.Bg5 h6 ; Variation ; *pwo
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bg5 h6 (6.Bxf6 Bxf6 7.Qb3 c6 8.e3 O-O)
1/2

D56    QGD: Lasker Defense: Teichmann Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 Ne4 8.Bxe7 Qxe7
9.Qc2 1/2

D57    QGD: Lasker Defense: Bernstein Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 Ne4 8.Bxe7 Qxe7
9.cxd5 Nxc3 10.bxc3 exd5 11.Qb3 Qd6 1/2

D58    QGD: Tartakower: (Makagonov-Bondarevsky) System
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 b6 1/2

D58/13 QGD: Tartakower: (Makagonov-Bondarevsky) System ; *pwo 6/01 add
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 b6 8.Bd3 Bb7
9.O-O Nbd7 10.Qe2 c5 11.Rfd1 Ne4 12.Bg3 cxd4 13.exd4 Nxg3 14.hxg3 1/2

D58/17 QGD: Tartakower: (Makagonov-Bondarevsky) System ; *pwo (Nikolic-Vaganian)
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 b6 8.Be2 Bb7
9.Bxf6 Bxf6 10.cxd5 exd5 11.O-O Qe7 12.Qb3 Rd8 13.Rad1 1/2

D58/23 QGD: Tartakower: (Makagonov-Bondarevsky) System ; *pwo, natural Line (Kasparov-Beliavsky)
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 Be7 6.e3 h6 (7.Bh4 O-O 8.Bd3 b6
9.Nf3 Bb7 10.O-O c5) 1/2

D58/13 QGD: Tartakower: (Makagonov-Bondarevsky) System ; *pwo 6/01 add, nat, most common move order arriving at 7...b6
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bg5 h6 6.Bh4 O-O 7.e3 b6 8.Bd3 Bb7
9.O-O Nbd7 (10.Qe2 c5 11.Rfd1 Ne4 12.Bg3 cxd4 13.exd4) 1/2

D59    QGD: Tartakower: (Makagonov-Bondarevsky) System 8.cd Nxd5
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 b6 8.cxd5 Nxd5
1/2

D59    QGD: Tartakower Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 b6 8.cxd5 Nxd5
9.Bxe7 Qxe7 10.Nxd5 exd5 11.Rc1 Be6 1/2

D59/01 QGD: Tartakower Variation: 5.e3 ; *pwo 6/01 add, nat
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 b6 8.Rc1 Bb7
9.cxd5 Nxd5 10.Bxe7 Qxe7 11.Be2 1/2

D60    QGD: Orthodox Defense
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 1/2

D60    QGD: Orthodox Defense: Botvinnik Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Bd3 1/2

D61    QGD: Orthodox Defense: Rubinstein Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Qc2 1/2

D62    QGD: Orthodox Defense: Rubinstein Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Qc2 c5 8.cxd5
1/2

D63    QGD: Orthodox Defense: 7.Rc1
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 1/2

D63    QGD: Orthodox Defense: Swiss (Henneberger) Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 a6 1/2

D63    QGD: Orthodox Defense: Swiss, Karlsbad Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 a6 8.cxd5
1/2

D63    QGD: Orthodox Defense: Capablanca Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 b6 8.cxd5 exd5
9.Bb5 1/2

D63    QGD: Orthodox Defense: Pillsbury Attack
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 b6 8.cxd5 exd5
9.Bd3 1/2

D63    QGD: Orthodox Defense
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 1/2

D64    QGD: Orthodox Defense: Rubinstein Attack (with Rc1)
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Qc2
1/2

D64    QGD: Orthodox Defense: Rubinstein Attack, Gruenfeld ; Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Qc2 a6
9.a3 1/2

D65    QGD: Orthodox Defense: Rubinstein Attack, Main Line ; (note: very seldom played *pwo)
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Qc2 a6
9.cxd5 1/2

D66    QGD: Orthodox Defense: Bd3 Line
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3
1/2

D67    QGD: Orthodox Defense: Capablanca freeing manoevre ;(Bd3 Line) 
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 dxc4
9.Bxc4 Nd5 1/2

D67    QGD: Orthodox Defense: Bd3 Line
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 dxc4
9.Bxc4 Nd5 10.Bxe7 Qxe7 1/2

D67    QGD: Orthodox Defense: Bd3 Line, Alekhine Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 dxc4
9.Bxc4 Nd5 10.Bxe7 Qxe7 11.Ne4 1/2

D67    QGD: Orthodox Defense: Bd3 Line, 11.O-O
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 dxc4
9.Bxc4 Nd5 10.Bxe7 Qxe7 11.O-O 1/2

D68    QGD: Orthodox Defense: Classical Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 dxc4
9.Bxc4 Nd5 10.Bxe7 Qxe7 11.O-O Nxc3 12.Rxc3 e5 1/2

D68    QGD: Orthodox Defense: Classical 13.Qc2 (Vidmar)
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 dxc4
9.Bxc4 Nd5 10.Bxe7 Qxe7 11.O-O Nxc3 12.Rxc3 e5 13.Qc2 1/2

D68    QGD: Orthodox Defense: Classical 13.Qc2 ; *pwo 3/01 add, nat 5.Nf3, back in 7.Rc1
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.Nf3 Nbd7 6.e3 O-O 7.Rc1 c6 8.Bd3 dxc4
9.Bxc4 Nd5 10.Bxe7 Qxe7 11.O-O Nxc3 12.Rxc3 e5 13.Qc2 e4 14.Nd2 Nf6 15.Rc1
1/2

D69    QGD: Orthodox Defense: Classical 13.dxe5
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 dxc4
9.Bxc4 Nd5 10.Bxe7 Qxe7 11.O-O Nxc3 12.Rxc3 e5 13.dxe5 Nxe5 14.Nxe5 Qxe5
1/2

D70    Neo-Gruenfeld Defense
1.d4 Nf6 2.c4 g6 3.f3 d5 1/2

D70    Neo-Gruenfeld (Kemeri) Defense
1.d4 Nf6 2.c4 g6 3.g3 d5 1/2

D70    Neo-Gruenfeld Openings ; (plus KID & Accelerated Sicilian) *pwo 4/01 add catchall
1.d4 Nf6 2.c4 g6 3.Nf3 1/2

D71    Neo-Gruenfeld: 5.cxd5
1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.cxd5 Nxd5 1/2

D72    Neo-Gruenfeld: 5.cxd5, Main Line
1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.cxd5 Nxd5 6.e4 Nb6 7.Ne2 1/2

D73    Neo-Gruenfeld: 5.Nf3
1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 1/2

D73/03 Neo-Gruenfeld: 5.Nf3 dxc4
1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 dxc4 1/2

D73    Neo-Gruenfeld (with...Nb6) ; (add) *pwo
1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.cxd5 Nxd5 6.Nf3 Nb6 1/2

D74    Neo-Gruenfeld: 6.cxd5 Nxd5 7.O-O
1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.cxd5 Nxd5 7.O-O 1/2

D75    Neo-Gruenfeld: 7...c5 8.dxc5
1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.cxd5 Nxd5 7.O-O c5 8.dxc5
1/2

D75    Neo-Gruenfeld: 7...c5 8.Nc3
1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.cxd5 Nxd5 7.O-O c5 8.Nc3
1/2

D76    Neo-Gruenfeld: 6.cxd5 Nxd5 7.O-O Nb6
1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.cxd5 Nxd5 7.O-O Nb6 1/2

D76/07 Neo-Gruenfeld: 6.cxd5 Nxd5 7.O-O Nb6 ; (nat) *pwo
1.Nf3 g6 2.c4 Nf6 3.d4 Bg7 4.g3 d5 5.cxd5 Nxd5 6.Bg2 O-O 7.O-O Nb6 8.Nc3 Nc6
9.e3 Re8 10.Ne1 e5 1/2

D77    Neo-Gruenfeld: 6.O-O
1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.O-O 1/2

D77/14 Neo-Gruenfeld: 6.c4 ; *pwo 6/01 add, nat, most common move order arriving at D77
1.d4 Nf6 2.Nf3 g6 3.g3 Bg7 4.Bg2 d5 5.O-O O-O 6.c4 dxc4 7.Na3 Nc6 8.Nxc4 Be6
9.b3 Bd5 10.Bb2 a5 11.Rc1 a4 1/2

D78    Neo-Gruenfeld: 6.O-O c6
1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.O-O c6 1/2

D78    Neo-Gruenfeld: 7.Nbd2 ; (subr some D02) *pwo
1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.O-O c6 7.Nbd2 Bf5 8.b3 Ne4
9.Bb2 1/2

D78/01 Neo-Gruenfeld: 6.O-O c6 ; (add) *pwo
1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.O-O c6 7.Nc3 dxc4 1/2

D78/14 Neo-Gruenfeld: O-O...c6 7.b3 ; *pwo 6/01 add, nat (most common D78 move order)
1.d4 Nf6 2.Nf3 g6 3.c4 Bg7 4.g3 O-O 5.Bg2 c6 6.O-O d5 7.b3 Ne4 8.Bb2 Be6
1/2

D78/08 Neo-Gruenfeld: O-O...c6 7.Qb3 ; *pwo 6/01 add, nat (most common D78 move order)
1.d4 Nf6 2.Nf3 g6 3.c4 Bg7 4.g3 O-O 5.Bg2 c6 6.O-O d5 7.Qb3 Qb6 8.Nc3 Bf5
1/2

D79    Neo-Gruenfeld: 6.O-O, Main Line ; (ext fm 7...cxd5) *pwo
1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.O-O c6 7.cxd5 cxd5 8.Nc3 Ne4
9.Qb3 Nc6 10.Rd1 1/2

D79/11 Neo-Gruenfeld: 3...c6, Modern Main Line ; *pwo 6/01 add, nat (subr fm E60, E72)
1.d4 Nf6 2.c4 g6 3.g3 c6 4.Bg2 d5 5.cxd5 cxd5 6.Nc3 Bg7 7.Nf3 O-O 8.O-O Ne4
9.Qb3 1/2

D79/02 Neo-Gruenfeld: 6.cxd5 (Karpov) ; (Karpov) *pwo
1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.g3 c6 5.Bg2 d5 6.cxd5 cxd5 (7.Nc3 O-O 8.Ne5 e6
9.O-O Nfd7 10.f4 Nc6 11.Be3 Ndxe5) 1/2

D79/07 Neo-Gruenfeld: 6.cxd5 ; (nat; avoid A16, A39, D14) *pwo
1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.c4 c6 5.d4 d5 6.cxd5 cxd5 7.Nc3 O-O 8.Ne5 Nc6
9.O-O e6 10.Nxc6 bxc6 11.Na4 Nd7 12.Bf4 Ba6 13.Rc1 1/2

D80    Gruenfeld Defense
1.d4 Nf6 2.c4 g6 3.Nc3 d5 1/2

D80    Gruenfeld: Stockholm Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bg5 1/2

D80    Gruenfeld: Lundin Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bg5 Ne4 5.Nxe4 dxe4 6.Qd2 c5 1/2

D81    Gruenfeld: Russian Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Qb3 1/2

D82    Gruenfeld: 4.Bf4 ; (ext fm 4.Bf4) *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 1/2

D83    Gruenfeld: Gruenfeld Gambit
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 1/2

D83    Gruenfeld: Gruenfeld Gambit: Botvinnik Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 6.Rc1 c5 7.dxc5 Be6 1/2

D84    Gruenfeld: Gruenfeld Gambit Accepted
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 6.cxd5 Nxd5 7.Nxd5 Qxd5 8.Bxc7
1/2

D85    Gruenfeld: Exchange Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 1/2

D85/04 Gruenfeld: Modern Exchange (Bb5+) ; *pwo (subr fm D86)
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bb5+ c6
8.Ba4 b5 9.Bb3 b4 10.Be3 bxc3 11.Ne2 1/2

D85    Gruenfeld: Modern Exchange Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Nf3 1/2

D85/84 Gruenfeld: Modern Exchange Variation: Main Line ; *pwo 6/01 add
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Nf3 c5
8.Rb1 O-O 9.Be2 cxd4 10.cxd4 Qa5+ 11.Bd2 Qxa2 12.O-O Bg4 13.Bg5 h6
14.Be3 Nc6 15.d5 Ne5 16.Rxb7 1/2

D85/02 Gruenfeld: Modern Exchange Variation: 5.Bd2 ; *pwo 6/01 add, see also D90/04
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.Bd2 Bg7 6.e4 Nb6 7.Be3 O-O 8.Be2 Nc6
9.d5 1/2

D85/57 Gruenfeld: Modern Exchange Variation: 5.cxd5 ; *pwo 6/01 add, nat, D90 start
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.cxd5 Nxd5 6.e4 Nxc3 7.bxc3 c5
8.Rb1 O-O 9.Be2 Nc6 10.d5 Ne5 11.Nxe5 Bxe5 12.Qd2 e6 13.f4 Bg7 14.c4 Re8
15.e5 f6 1/2

D86    Gruenfeld: Exchange: Classical Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 1/2

D86    Gruenfeld: Exchange: Simagin's Lesser Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O
8.Ne2 b6 1/2

D86    Gruenfeld: Exchange: Simagin's Improved Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O
8.Ne2 Nc6 1/2

D87    Gruenfeld: Exchange: Spassky Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O
8.Ne2 c5 1/2

D87    Gruenfeld: Exchange: Seville Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O
8.Ne2 c5 9.O-O Nc6 10.Be3 Bg4 11.f3 Na5 12.Bxf7+ 1/2

D87    Gruenfeld: Exchange: Seville Variation (...Qc7) ; *pwo 4/01 add, nat
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 c5
8.Ne2 O-O 9.O-O Nc6 10.Be3 Qc7 11.Rc1 Rd8 12.Bf4 Qd7 13.d5 Na5 14.Bd3 b5
15.Rb1 1/2

D88    Gruenfeld: Spassky Variation: Main Line 10...cxd4 11.cxd4
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O
8.Ne2 c5 9.O-O Nc6 10.Be3 cxd4 11.cxd4 1/2

D89    Gruenfeld: Spassky Variation: Main Line 13.Bd3
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O
8.Ne2 c5 9.O-O Nc6 10.Be3 cxd4 11.cxd4 Bg4 12.f3 Na5 13.Bd3 Be6 1/2

D89    Gruenfeld: Exchange: Sokolsky Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O
8.Ne2 c5 9.O-O Nc6 10.Be3 cxd4 11.cxd4 Bg4 12.f3 Na5 13.Bd3 Be6 14.d5 1/2

D90    Gruenfeld: Three Knights Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 1/2

D90    Gruenfeld: Schlechter Variation ; *pwo 5/01 ext fm 4...c6 to subr fm D15
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 c6 5.cxd5 1/2

D90    Gruenfeld: Three Knights Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 1/2

D90/04 Gruenfeld: Three Knights Exchange ; *pwo 6/01 add, footnote 22, straight book
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.cxd5 Nxd5 6.Bd2 O-O 7.e4 Nb6 8.Be3 Bg4
9.Be2 Nc6 10.d5 1/2

D90    Gruenfeld: Flohr Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qa4+ 1/2

D90/04 Gruenfeld: Modern Exchange Variation: 5.Bd2 ; *pwo 6/01 add, see also D85/02
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.Bd2 Bg7 6.e4 Nb6 7.Be3 O-O 8.Be2 Nc6
9.Nf3 Bg4 10.d5 Bxf3 1/2

D91    Gruenfeld: 5.Bg5
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Bg5 1/2

D91/22 Gruenfeld: 5.Bg5, Main Line ; *pwo 6/01 add
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Bg5 Ne4 6.cxd5 Nxg5 7.Nxg5 e6
8.Nf3 exd5 9.e3 O-O 10.b4 c6 11.Be2 1/2

D91/04 Gruenfeld: 4.Bg5 Ne4 5.Bf4 ; *pwo 6/01 add, nat, footnote 23, subr fm D80 Lundin Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bg5 Ne4 5.Bf4 Nxc3 6.bxc3 Bg7 7.e3 c5 8.Nf3 O-O
9.Be2 1/2

D92    Gruenfeld: 5.Bf4 ; (ext 5...O-O) *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Bf4 O-O 1/2

D93    Gruenfeld with Bf4 e3
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Bf4 O-O 6.e3 1/2

D93/16 Gruenfeld with Bf4 e3: ...c5 Main Line ; *pwo 6/01 add
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Bf4 O-O 6.e3 c5 7.dxc5 Qa5 8.Rc1 dxc4
9.Bxc4 Qxc5 10.Bb3 Nc6 11.O-O Qa5 1/2

D93    Gruenfeld with Bf4 e3 (...c5 dxc5) ; (add, natural Line) *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 c5 6.dxc5 Qa5 7.Rc1 1/2

D93    Gruenfeld with Bf4 e3 (Qb3) ; (add, natural Line) *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 6.Qb3 c6 7.Nf3 Qa5 1/2

D93    Gruenfeld with Bf4 e3 ; (add, natural Line) *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 6.Rc1 c6 7.Nf3 1/2

D94    Gruenfeld: 5.e3
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 1/2

D94    Gruenfeld: 6.Bd3 ; *pwo 3/01 add
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 c6 6.Bd3 O-O 7.O-O Bg4 8.h3 Bxf3
9.Qxf3 e6 1/2

D94/16 Gruenfeld: 5.e3 c6
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 c6 6.Be2 O-O 7.O-O Be6 1/2

D94    Gruenfeld: Makogonov Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 O-O 6.b4 1/2

D94    Gruenfeld: Opovcensky Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 O-O 6.Bd2 1/2

D94    Gruenfeld (with e3 Bd3)
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 O-O 6.Bd3 1/2

D94    Gruenfeld: Flohr Defense
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 O-O 6.Bd3 c6 7.O-O Bf5 1/2

D94    Gruenfeld: Smyslov Defense
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 O-O 6.Bd3 c6 7.O-O Bg4 1/2

D94/18 Gruenfeld (with e3 Be2...c5) ; *pwo 6/01 add, straight book
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 O-O 6.Be2 c5 7.O-O cxd4 8.exd4 Nc6
9.h3 1/2

D94/18 Gruenfeld (with e3 Be2...c5) ; *pwo 6/01 revise addition, nat
1.d4 Nf6 2.c4 c5 3.e3 g6 4.Nf3 Bg7 5.Nc3 O-O 6.Be2 cxd4 7.exd4 d5 8.O-O Nc6
9.h3 dxc4 10.Bxc4 Na5 1/2

D94/23 Gruenfeld (with e3 Be2): Main Line ; *pwo 6/01 add, nat
1.d4 d5 2.c4 c6 3.Nc3 Nf6 4.e3 g6 5.Nf3 Bg7 6.Be2 O-O 7.O-O dxc4 8.Bxc4 Bg4
9.h3 1/2

D95    Gruenfeld (with e3 & Qb3)
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 O-O 6.Qb3 1/2

D95    Gruenfeld: Pachman Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 O-O 6.Qb3 dxc4 7.Bxc4 Nbd7 8.Ng5
1/2

D95    Gruenfeld: Botvinnik Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 O-O 6.Qb3 e6 1/2

D96    Gruenfeld: Russian Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 1/2

D97    Gruenfeld: Russian Variation (with e4)
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 1/2

D97    Gruenfeld: Russian: Alekhine (Hungarian) Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 a6 1/2

D97    Gruenfeld: Russian: Szabo (Boleslavsky) Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 c6 1/2

D97/11 Gruenfeld: Russian: Prins Variation ; *pwo 6/01, extend from 7...Na6, add Line code
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 Na6 8.Be2 c5
9.d5 e6 10.O-O exd5 11.exd5 Bf5 12.Be3 Re8 13.Rad1 1/2

D97    Gruenfeld: Russian: Byrne (Simagin) Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 Nc6 1/2

D98    Gruenfeld: Russian: Smyslov Variation ; (ext fm 7...Bg4) *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 Bg4
8.Be3 Nfd7 1/2

D98    Gruenfeld: Russian: Keres Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 Bg4
8.Be3 Nfd7 9.Be2 Nb6 10.Qd3 Nc6 11.O-O-O 1/2

D99    Gruenfeld Defense: Smyslov, Main Line
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 Bg4
8.Be3 Nfd7 9.Qb3 1/2

E00    Queen's Pawn Game
1.d4 Nf6 2.c4 e6 1/2

E00    Catalan Opening ; (subtract fm E09) *pwo
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Nf3 c6 5.Bg2 Bb4+ 6.Bd2 Be7 1/2

E00    Catalan Opening ; (ext fm 3.g3) *pwo
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Nf3 Bb4+ 5.Bd2 1/2

E00    Catalan Opening ; (subtract fm E08 & E11) *pwo
1.d4 Nf6 2.c4 e6 3.g3 Bb4+ 4.Bd2 Qe7 1/2

E00    Neo-Indian (Seirawan) Attack
1.d4 Nf6 2.c4 e6 3.Bg5 1/2

E00    Queen's Pawn Game ; (ext. to 3.Nc3 to subr fm Nimzo-Indian) *pwo
1.d4 Nf6 2.c4 e6 3.Nc3 1/2

E01    Catalan: Closed
1.d4 Nf6 2.c4 e6 3.g3 d5 1/2

E01    Catalan: Closed ; *pwo 4/01 add
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 1/2

E01    Catalan: Closed ; (ext fm 4.Bg2) *pwo
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 c5 5.Nf3 cxd4 6.O-O Be7 7.Nxd4 O-O
8.cxd5 Nxd5 1/2

E01/10 Catalan: Closed (...c5) ; *pwo 3/01 add, nat Line in range fm 3...c5 to 6.Bg2; see also A32
1.d4 Nf6 2.c4 e6 3.g3 c5 4.Nf3 cxd4 5.Nxd4 d5 6.Bg2 e5 7.Nf3 d4 8.O-O Nc6
9.e3 Bc5 10.exd4 exd4 11.Nbd2 O-O 12.Nb3 1/2

E01/02 Catalan: Closed (...c6) ; *pwo 5/01 add, nat, at 5...Nbd7 Line could be A13 A40 A93 D30 D43 E00 E07 E09
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.g3 c6 5.Bg2 Nbd7 6.O-O Bd6 7.Qc2 O-O 8.Nbd2 Re8
1/2

E02    Catalan: Open: 5.Qa4 ; (added) *pwo
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Qa4+ Bd7 1/2

E02    Catalan: Open: 5.Qa4 ; (ext fm 5.Qa4+) *pwo
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Qa4+ Nbd7 6.Nf3 a6 7.Nc3 1/2

E03    Catalan: Open: 5.Qa4 Nbd7 6.Qxc4
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Qa4+ Nbd7 6.Qxc4 1/2

;E03/02 Catalan: Open: Alekhine (English Line) ; (add) *pwo
;1.c4 e6 2.g3 d5 3.Bg2 Nf6 4.Nf3 dxc4 5.Qa4+ Nbd7 6.Qxc4 c5 7.d4 a6
;8.Qc2 cxd4 1/2

E04    Catalan: Open: 5.Nf3
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Nf3 1/2

E04    Catalan: Open: 5.Nf3 c5 ; (added) *pwo
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Nf3 c5 6.O-O Nc6 1/2

E04    Catalan: Open: 5.Nf3 Nc6 ; (added) *pwo
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Nf3 Nc6 1/2

E05    Catalan: Open: Classical Line
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Nf3 Be7 1/2

E05    Catalan: Open:, Classical Line ; (ext fm 5...Be7) *pwo
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Nf3 Be7 6.O-O O-O 1/2

E05/03 Catalan: Open (Nc3) ; *pwo, natural Line
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Nf3 Be7 5.Bg2 O-O 6.Nc3 dxc4 7.O-O 1/2

E05/14 Catalan: Open: Classical, Modern Line ; *pwo 4/01 add, nat, footnote 88
1.Nf3 d5 2.d4 e6 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O 6.c4 dxc4 7.Qc2 a6 8.a4 c5
9.dxc5 Nc6 10.Qxc4 1/2

E06/06 Catalan: Open (Qc2) ; *pwo
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.Qc2 c5 7.O-O cxd4 8.Nxd4 Nc6
9.Nxc6 bxc6 10.b3 1/2

E06/04 Catalan: Closed ; (added) *pwo
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O c6 7.Qc2 b6 1/2

E07    Catalan: Closed: 6...Nbd7
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O Nbd7 1/2

E07    Catalan: Closed: Botvinnik Variation
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O Nbd7 7.Nc3 c6 8.Qd3
1/2

E08    Catalan: Closed: 7.Qc2
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O Nbd7 7.Qc2 1/2

E08    Catalan: Closed (Qc2 & b3)
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O Nbd7 7.Qc2 c6 8.b3 1/2

E08/07 Catalan: Closed: Spassky Variation ; *pwo
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O Nbd7 7.Qc2 c6 8.b3 b6
9.Rd1 Bb7 10.Nc3 b5 1/2

E08    Catalan: Closed: Zagoryansky Variation
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O Nbd7 7.Qc2 c6 8.Rd1 b6
9.a4 1/2

E08/01 Catalan: Closed: Modern Line (Bb4+) ; (add) *pwo
1.d4 Nf6 2.c4 e6 3.g3 Bb4+ 4.Bd2 Be7 5.Bg2 d5 6.Nf3 O-O 7.O-O c6 8.Qc2 b6
9.Bf4 Bb7 10.Nbd2 Nbd7 1/2

E08/03 Catalan: Closed: Modern Line 4...e6 ; *pwo 5/01 add, nat, straight book ending
1.d4 d5 2.Nf3 c6 3.c4 Nf6 4.Qc2 e6 5.g3 Nbd7 6.Bg2 Be7 7.O-O O-O 8.Rd1 Ne4
9.Nc3 f5 1/2

E09    Catalan: Closed: Main Line
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O Nbd7 7.Qc2 c6 8.Nbd2
1/2

E09    Catalan: Closed: Sokolsky Variation
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O Nbd7 7.Qc2 c6 8.Nbd2 b6
9.b3 a5 10.Bb2 Ba6 1/2

E09    Catalan: Closed: Modern Line ; (alt) *pwo
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Nf3 c6 5.Bg2 Bb4+ 6.Bd2 Be7 7.Qc2 O-O 8.O-O Nbd7
9.Bf4 Nh5 10.Bc1 Nhf6 11.Nbd2 b6 1/2

E10    Queen's Pawn Game
1.d4 Nf6 2.c4 e6 3.Nf3 1/2

E10    Dzindzikhashvili Defense
1.d4 Nf6 2.c4 e6 3.Nf3 a6 1/2

E10    Blumenfeld Counter-Gambit
1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 b5 1/2

E10    Blumenfeld Counter-Gambit Accepted
1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 b5 5.dxe6 fxe6 6.cxb5 d5 1/2

E10    Blumenfeld Counter-Gambit: Dus-Chotimursky Variation
1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 b5 5.Bg5 1/2

E10    Blumenfeld Counter-Gambit: Spielmann Variation
1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 b5 5.Bg5 exd5 6.cxd5 h6 1/2

E11    Bogo-Indian Defense
1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 1/2

E11/36 Bogo-Indian Defense: (...Be7 retreat) ; *pwo: Kasparov Line
1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 Be7 5.g3 d5 6.Bg2 O-O 7.O-O c6 1/2

E11    Bogo-Indian Defense: Monticelli Trap
1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 Bxd2+ 5.Qxd2 b6 6.g3 Bb7 7.Bg2 O-O
8.Nc3 Ne4 9.Qc2 Nxc3 10.Ng5 1/2

E11    Bogo-Indian Defense: Nimzovich Variation
1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 Qe7 1/2

E11/35 Bogo-Indian Defense: Nimzovich Variation: Main Line ; *pwo 6/01 add
1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 Qe7 5.g3 Nc6 6.Bg2 Bxd2+ 7.Nbxd2 d6
8.O-O a5 9.e4 e5 10.d5 Nb8 11.Ne1 O-O 12.Nd3 Na6 1/2

E11    Bogo-Indian Defense: Gruenfeld Variation
1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Nbd2 1/2

E11/07 Bogo-Indian Defense: Yusupov ; *pwo 4/01 add, nat, footnote 42: Jusupov-Hort, Reykjavik '85
1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Nbd2 b6 5.a3 Bxd2+ 6.Bxd2 Bb7 7.Bg5 d6
8.e3 Nbd7 9.Qc2 h6 10.Bh4 a5 (11.Bd3 Qe7 12.O-O-O) 1/2

E11/36 Bogo-Indian Defense: (Be7 retreat) ; *pwo: Kasparov Line, nat
1.d4 Nf6 2.c4 e6 3.g3 Bb4+ 4.Bd2 Be7 5.Bg2 d5 6.Nf3 O-O 7.O-O c6 8.Qc2 b6
9.b3 Nbd7 1/2

E11    Bogo-Indian Defense: Modern Line ; *pwo 4/01 add, nat (see also A40)
1.d4 e6 2.c4 Bb4+ 3.Bd2 a5 4.Nf3 d6 5.Nc3 Nf6 6.Bg5 1/2

E12    Queen's Indian Defense
1.d4 Nf6 2.c4 e6 3.Nf3 b6 1/2

E12    Queen's Indian: Petrosian System
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.a3 1/2

E12/76 Queen's Indian: Petrosian System: Main Line ; *pwo 6/01 add, nat, footnote 476
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.a3 Bb7 5.Nc3 d5 6.cxd5 Nxd5 7.e3 Be7 8.Bb5+ c6
9.Bd3 O-O 10.e4 Nxc3 11.bxc3 c5 12.O-O cxd4 1/2

; note that E12/76 & E12/57 could reach the same position. E12/57 however saves White a tempo

E12/57 Queen's Indian: Petrosian System: Alternate Main Line ; *pwo 6/01 add, nat
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.a3 Bb7 5.Nc3 d5 6.cxd5 Nxd5 7.Qc2 Nxc3
8.bxc3 Be7 9.e4 O-O 10.Bd3 c5 11.O-O Qc8 1/2

E12    Queen's Indian: Miles Variation
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Bf4 1/2

E12    Queen's Indian: 4.Nc3
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 1/2

E12    Queen's Indian: 4.Nc3: Botvinnik Variation
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.Bg5 h6 6.Bh4 g5 7.Bg3 Nh5 1/2

E13    Queen's Indian: Main Line
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.Bg5 h6 6.Bh4 Bb4 1/2

E13    Queen's Indian: Main Line: 7.e3 ; *pwo
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.Bg5 h6 6.Bh4 Bb4 7.e3 1/2

E13/06 Queen's Indian: Main Line (Nd2) ; *pwo 3/01 add, nat, footnote 41
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb4 5.Bg5 Bb7 6.e3 Bxc3+ 7.bxc3 d6 8.Nd2 h6
9.Bh4 Nbd7 10.f3 Qe7 11.e4 e5 12.Bd3 g5 13.Bf2 Nh5 1/2

E14    Queen's Indian: 4.e3
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.e3 1/2

E14/07 Queen's Indian: Averbakh Variation ; *pwo ECO footnote 68
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.e3 Bb7 5.Bd3 c5 6.O-O Be7 7.b3 O-O 8.Bb2 cxd4
9.exd4 d5 10.Nbd2 Nc6 11.Rc1 Rc8 12.Qe2 Re8 13.Rfd1 Bf8 14.Qe3 g6 15.h3
1/2

E14    Queen's Indian: Averbakh Variation
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.e3 Bb7 5.Bd3 c5 6.O-O Be7 7.b3 O-O 8.Bb2 cxd4
9.Nxd4 1/2

E14/03 Queen's Indian (with e3) ; (add) *pwo
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.e3 Bb7 5.Bd3 Bb4+ 6.Nbd2 1/2

; (below) The extended book Line will receive transpositions.
;The position after 9...d5 will find Games C.A. has classified variously
;as A04/08, A05/01, A30/02, A46/05, A47/10, D30/08, E14/06 depending on
;earlier moves.

E14/07 Queen's Indian: Modern Averbakh Variation ; *pwo (nat) ECO footnote 64
1.Nf3 Nf6 2.d4 e6 3.e3 b6 4.Bd3 Bb7 5.O-O Be7 6.c4 O-O 7.b3 c5 8.Bb2 cxd4
9.exd4 d5 10.Qe2 1/2

E15    Queen's Indian: 4.g3
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 1/2

E15    Queen's Indian: Nimzovich Variation: (Exaggerated Fianchetto)
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 1/2

E15/40 Queen's Indian: Nimzovich Variation: (Exaggerated Fianchetto), Main Line ; *pwo 6/01 add
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.b3 Bb4+ 6.Bd2 Be7 7.Bg2 c6 8.Bc3 d5
9.Ne5 Nfd7 10.Nxd7 Nxd7 11.Nd2 O-O 12.O-O Rc8 13.e4 b5 14.Re1 dxe4 1/2

E15    Queen's Indian: Rubinstein Variation
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 c5 6.d5 exd5 7.Nh4 1/2

E16    Queen's Indian: Yates Variation
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Bb4+ 6.Bd2 a5 1/2

E16    Queen's Indian: Riumin Variation
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Bb4+ 6.Bd2 Be7 1/2

E16    Queen's Indian: Capablanca Variation ; (ext fm 5...Bb4+) *pwo
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Bb4+ 6.Nbd2 1/2

E17    Queen's Indian: 5.Bg2 Be7
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 1/2

E17    Queen's Indian: Anti-Queen's Indian System
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.Nc3 1/2

E17    Queen's Indian: Opovcensky Variation
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.Nc3 Ne4 7.Bd2 1/2

E17    Queen's Indian: Euwe Variation
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.b3 1/2

E18    Queen's Indian: Old Main Line
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 1/2

E18/02 Queen's Indian: Old Main Line (...d5) ; (add) *pwo
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 d5 8.cxd5 exd5
1/2

E18/09 Queen's Indian: Old Main Line: 8.Nxe4 ; *pwo 6/01 add
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 Ne4 8.Nxe4 Bxe4
9.Ne1 Bxg2 10.Nxg2 d5 11.Qa4 Qe8 12.Qxe8 Rxe8 1/2

E18/07 Queen's Indian: Old Main Line (...Ne4) ; *pwo 5/01 revise, footnote 32
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 Ne4 8.Qc2 Nxc3
1/2

E19    Queen's Indian: Old Main Line: 9.Qxc3
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 Ne4 8.Qc2 Nxc3
9.Qxc3 1/2

E19/14 Queen's Indian: Old Main Line (Qxc3) ; *pwo 3/01 add
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 Ne4 8.Qc2 Nxc3
9.Qxc3 c5 10.Rd1 d6 11.b3 Bf6 12.Bb2 Qe7 13.Qc2 Nc6 1/2

; these two the same, 2nd catches early transpositions

;E19/14 Queen's Indian: Old Main Line (suspended d4) ; *pwo 3/01 add nat
;1.c4 Nf6 2.Nf3 e6 3.g3 b6 4.Bg2 Bb7 5.O-O Be7 6.d4 O-O (7.Nc3 Ne4 8.Qc2 Nxc3
;9.Qxc3 c5 10.Rd1 d6 11.b3 Bf6 12.Bb2 Qe7 13.Qc2 Nc6) 1/2

E20    Nimzo-Indian Defense
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 1/2

E20    Nimzo-Indian: Kmoch Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.f3 1/2

E20    Nimzo-Indian: Romanishin-Kasparov (Steiner) System
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.g3 1/2

E20/10 Nimzo-Indian: Romanishin-Kasparov (Steiner) System ; *pwo
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.g3 c5 5.Nf3 cxd4 6.Nxd4 Ne4 1/2

E20/01 Nimzo-Indian Defense: 4.Bd2 ; *pwo 3/01 add; footnote 1; an unusual situation: ECO
				    ; names both 5.Nf3 & 5.e3 as moves leading to continuations
				    ; in other sections, respectively, E21/1 & E46/1. However,
				    ; neither section contains white's move, Bd2.
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bd2 O-O 5.e3 b6 6.Nf3 Bb7 7.Bd3 d5 8.O-O dxc4
1/2

E20/05 Nimzo-Indian: Kasparov System ; *pwo
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 c5 5.g3 Nc6 (6.Bg2 Ne4 7.Bd2 Bxc3
8.bxc3 O-O 9.O-O Na5) 1/2

E20/12 Nimzo-Indian: Romanishin-Kasparov: Modern Line ; *pwo 4/01 add, nat, footnote 76; nearly identical w/ A32
1.d4 Nf6 2.c4 e6 3.Nc3 c5 4.Nf3 cxd4 5.Nxd4 Bb4 6.g3 O-O 7.Bg2 d5
8.cxd5 Nxd5 9.Bd2 Bxc3 10.bxc3 e5 11.Nb5 1/2

E21    Nimzo-Indian: Three Knights Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 1/2

E21    Nimzo-Indian: Three Knights: Korchnoi Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 c5 5.d5 1/2

E21    Nimzo-Indian: Three Knights (...b6) ; (natural Line) *pwo
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb4 1/2

E22    Nimzo-Indian: Spielmann Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 1/2

;note: the position below can also be reached by the A33 sequence,
;1*c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Bb4 6.Qb3 Bc5 7.Nf3
;However, they are then one move apart

E22    Nimzo-Indian: Spielmann Variation ; (ext fm 4.Qb3) *pwo ECO footnote 24
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 c5 5.dxc5 Bxc5 6.Nf3 1/2

E23    Nimzo-Indian: Spielmann: 4...c5 5.dxc5 Nc6
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 c5 5.dxc5 Nc6 1/2

E24    Nimzo-Indian: Saemisch Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 1/2

E25    Nimzo-Indian: Saemisch Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.f3 d5 7.cxd5 1/2

E25/01 Nimzo-Indian: Saemisch Variation ; *pwo 4/01 add, footnote 2, see also E49/02 (delayed f3)
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.f3 d5 7.cxd5 exd5 8.e3 O-O
9.Bd3 Nc6 10.Ne2 Re8 11.O-O cxd4 1/2

E25    Nimzo-Indian: Saemisch: Keres Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.f3 d5 7.cxd5 Nxd5 8.dxc5
1/2

E25    Nimzo-Indian: Saemisch: Romanovsky Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.f3 d5 7.cxd5 Nxd5
8.dxc5 f5 1/2

E26    Nimzo-Indian: Saemisch Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.e3 1/2

E26    Nimzo-Indian: Saemisch: O'Kelly Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.e3 b6 1/2

E27    Nimzo-Indian: Saemisch Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 O-O 1/2

E28    Nimzo-Indian: Saemisch Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 O-O 6.e3 1/2

E29    Nimzo-Indian: Saemisch: Main Line
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 O-O 6.e3 c5 7.Bd3 Nc6 1/2

E29    Nimzo-Indian: Saemisch: Capablanca Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 O-O 6.e3 c5 7.Bd3 Nc6 8.Ne2 b6
9.e4 Ne8 1/2

E30    Nimzo-Indian: Leningrad Variation ; (ext fm 4.Bg5) *pwo
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5 h6 5.Bh4 c5 6.d5 1/2

E31    Nimzo-Indian: Leningrad: Main Line
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5 h6 5.Bh4 c5 6.d5 d6 1/2

E32    Nimzo-Indian: Classical Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 1/2

E32    Nimzo-Indian: Classical: Adorjan Gambit
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 O-O 5.a3 Bxc3+ 6.Qxc3 b5 1/2

E32/19 Nimzo-Indian: Classical Variation: Main Line ; *pwo 6/01 add, footnote 99
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 O-O 5.a3 Bxc3+ 6.Qxc3 b6 7.Bg5 Bb7 8.f3 h6
9.Bh4 d5 10.e3 Nbd7 11.cxd5 Nxd5 12.Bxd8 Nxc3 13.Bh4 1/2

E33    Nimzo-Indian: Classical: 4...Nc6
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 Nc6 1/2

E33    Nimzo-Indian: Classical: Milner-Barry (Zurich) Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 Nc6 5.Nf3 d6 1/2

E33/07 Nimzo-Indian: Classical: Milner-Barry, Modern Main Line ; *pwo 6/01 add nat, footnote 37 (see also A50)
1.d4 Nf6 2.c4 Nc6 3.Nf3 e6 4.Nc3 Bb4 5.Qc2 d6 6.Bd2 O-O 7.a3 Bxc3 8.Bxc3 Re8
1/2

E34    Nimzo-Indian: Classical: Noa Variation ; (ext 5.cxd5) *pwo
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 d5 5.cxd5 1/2

E35    Nimzo-Indian: Classical: Noa Variation 5.cd ed
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 d5 5.cxd5 exd5 1/2

E36    Nimzo-Indian: Classical: Botvinnik Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 d5 5.a3 Bxc3+ 6.Qxc3 Nc6 1/2

E37    Nimzo-Indian: Classical: Noa Variation, Main Line ; *pwo ext c5
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 d5 5.a3 Bxc3+ 6.Qxc3 Ne4 7.Qc2 c5 1/2

E37    Nimzo-Indian: Classical: San Remo Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 d5 5.a3 Bxc3+ 6.Qxc3 Ne4 7.Qc2 Nc6 8.e3 e5
1/2

E38    Nimzo-Indian: Classical: 4...c5 ; (ext 5.dxc5) *pwo
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 c5 5.dxc5 1/2

E38/02 Nimzo-Indian: Classical: 4...c5 5...Na6 ; *pwo
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 c5 5.dxc5 Na6 6.a3 Bxc3+ 7.Qxc3 Nxc5
8.b4 Nce4 9.Qd4 d5 10.c5 1/2

E39    Nimzo-Indian: Classical: Pirc Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 c5 5.dxc5 O-O 1/2

E39/12 Nimzo-Indian: Classical (without a3) ; (subr fm E32) *pwo
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 c5 5.dxc5 O-O 6.Nf3 Na6 7.g3 Nxc5
8.Bg2 Nce4 9.O-O Nxc3 10.bxc3 Be7 11.e4 (d6 12.e5 dxe5 13.Nxe5 Qc7) 1/2

E40    Nimzo-Indian: 4.e3
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 1/2

E40    Nimzo-Indian: 4.e3: Taimanov Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 Nc6 1/2

E41    Nimzo-Indian: 4.e3 c5
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 1/2

E41    Nimzo-Indian: Huebner Variation (e3)
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 Nc6 6.Nf3 Bxc3+ 7.bxc3 d6 1/2

E42    Nimzo-Indian: 4.e3 c5 5.Ne2 (Rubinstein)
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Nge2 1/2

E43    Nimzo-Indian: Fischer Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 1/2

E43/03 Nimzo-Indian: Keene Variation ; *pwo 4/01 add
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Bd3 Bb7 6.Nf3 Ne4 7.O-O f5 1/2

E43/11 Nimzo-Indian: Fischer/Larsen Variation ; *pwo 3/31 add
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Bd3 Bb7 6.Nf3 O-O 7.O-O c5 8.Na4 cxd4
9.exd4 Be7 10.a3 Qc7 11.b4 a5 12.b5 d6 13.Re1 Re8 1/2

E43/05 Nimzo-Indian: ...b6 Nf3 ; *pwo 3/01 nat Line to subr fm E14, see also A10
1.d4 Nf6 2.c4 e6 3.Nc3 b6 4.Nf3 Bb7 5.e3 Bb4 6.Bd3 Ne4 7.O-O Bxc3 8.bxc3 f5
1/2

E44    Nimzo-Indian: Fischer Variation 5.Ne2
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Nge2 1/2

E45    Nimzo-Indian: 4.e3: Bronstein (Byrne) Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Nge2 Ba6 1/2

E46    Nimzo-Indian: 4.e3 O-O
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 1/2

E46    Nimzo-Indian: Reshevsky Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nge2 1/2

E46    Nimzo-Indian: Simagin Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nge2 d5 6.a3 Bd6 1/2

E46/03 Nimzo-Indian: 4.Bd2 ; *pwo 3/01 add, nat
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bd2 O-O 5.e3 d5 6.cxd5 1/2

E47    Nimzo-Indian: 4.e3 O-O 5.Bd3
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 1/2

E48    Nimzo-Indian: 4.e3 O-O 5.Bd3 d5
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 1/2

E48/15 Nimzo-Indian: 7.O-O ; *pwo 4/01 add, footnote 107
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nge2 c5 7.O-O cxd4
8.exd4 dxc4 9.Bxc4 Nc6 10.Bg5 Be7 11.a3 b6 1/2

E48/13 Nimzo-Indian: ...c5, Nge2 d5 ; *pwo 3/01 add, footnote 89, nat (..c5>..d5)
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 c5 6.Nge2 d5 7.cxd5 cxd4
8.exd4 Nxd5 9.O-O Nc6 10.Bc2 Bd6 11.Ne4 Be7 12.a3 1/2

E48/08 Nimzo-Indian: ...c5, Nge2 d5 ; *pwo 3/01 add, nat (Reversed ..c5 ..d5)
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 c5 6.Nge2 d5 7.cxd5 cxd4
8.exd4 Qxd5 9.O-O Qh5 10.Ne4 1/2

E49    Nimzo-Indian: 4.e3: Botvinnik System
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.a3 Bxc3+ 7.bxc3 1/2

E51    Nimzo-Indian: 4.e3 O-O 5.Nf3 d5 ; (modf) *pwo
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 1/2

E51    Nimzo-Indian: 4.e3: Ragozin Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 Nc6 7.O-O dxc4 1/2

E52    Nimzo-Indian: 4.e3: Main Line (with...b6)
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 b6 1/2

E52/04 Nimzo-Indian: 4.e3: Main Line (...b6 O-O) ; *pwo 5/01 add
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 b6 7.O-O Bb7 8.cxd5 exd5
9.Ne5 Nbd7 1/2

E52/02 Nimzo-Indian: 4.e3: Modern Line ; *pwo
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 b6 6.Bd3 Bb7 7.O-O d5 8.a3 Bd6
9.cxd5 1/2

E53    Nimzo-Indian: 4.e3: Main Line (with...c5)
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 1/2

E53    Nimzo-Indian: 4.e3: Keres Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O b6 1/2

E53    Nimzo-Indian: 4.e3: Gligoric System (with 7...Nbd7)
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O Nbd7 1/2

E54    Nimzo-Indian: 4.e3: Gligoric System, Taimanov ; Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 Bd7
1/2

E54/03 Nimzo-Indian: 4.e3: Gligoric System (with 7...dxc4) ; (ext fm 8.Bxc4) *pwo
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 cxd4
9.exd4 1/2

;Believe it or not, but the Line above and the following Line are the same
;despite the fact the first has c6 and an early d-file Pawn Exchange (while
;the second does not). It is also lacking e3. The Line above is the
;standard ECO book sequence.

;E54/03 Nimzo-Indian: Gligoric System (with 7...dxc4); phantom Line ; (add) *pwo
;1.c4 c6 2.e4 d5 3.exd5 cxd5 4.d4 Nf6 5.Nc3 e6 6.Nf3 Bb4 7.Bd3 dxc4
;8.Bxc4 O-O 9.O-O 1/2

E55    Nimzo-Indian: 4.e3: Gligoric System, Bronstein ; Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 Nbd7
1/2

E55/11 Nimzo-Indian: 4.e3: Gligoric System, Bronstein ; Variation ; (ext) *pwo
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 Nbd7
9.Qe2 b6 10.d5 Bxc3 11.dxe6 Ne5 (12.exf7+ Kh8 13.bxc3 Bg4 14.e4 Qe7
15.Re1 b5) 1/2

E56    Nimzo-Indian: 4.e3: Main Line with 7...Nc6
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O Nc6 1/2

E57    Nimzo-Indian: 4.e3: Main Line with 8...dxc4 ; & 9...cxd4
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O Nc6 8.a3 dxc4
9.Bxc4 cxd4 1/2

E58    Nimzo-Indian: 4.e3: Main Line with 8...Bxc3
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O Nc6 8.a3 Bxc3
9.bxc3 1/2

E59    Nimzo-Indian: 4.e3: Main Line
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O Nc6 8.a3 Bxc3
9.bxc3 dxc4 10.Bxc4 1/2

E60    King's Indian Defense
1.d4 Nf6 2.c4 g6 1/2

E60    King's Indian: 3.g3
1.d4 Nf6 2.c4 g6 3.g3 1/2

E60    King's Indian: 3.g3: Counterthrust Variation
1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d5 1/2

E60    King's Indian: 3.Nf3 ; (extended) *pwo
1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 1/2

E60    King's Indian: Fianchetto Variation ; *pwo
1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.g3 O-O 5.Bg2 d6 6.O-O 1/2

E60/10 King's Indian: Fianchetto: Yugoslav System ; *pwo (per Gufeld,WWtKI)
1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.g3 O-O 5.Bg2 d6 6.O-O c5 7.dxc5 dxc5 1/2

E60/04 King's Indian: Nimzovich-Larsen Attack ; *pwo (natural Line)
1.Nf3 Nf6 2.b3 g6 3.Bb2 Bg7 4.e3 O-O 5.Be2 d6 6.d4 Nbd7 7.c4 e5 1/2

E61    King's Indian: 3.Nc3 ; (add) *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.g3 1/2

E61    King's Indian: Smyslov System
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.Bg5 1/2

E61    King's Indian: Smyslov System (...Bf5) ; (subr fm A53, nat) *pwo
1.d4 Nf6 2.Nf3 g6 3.c4 d6 4.Nc3 Bf5 5.Qb3 1/2

E61    King's Indian (Bf4) ; *pwo
1.d4 Nf6 2.Nf3 g6 3.c4 Bg7 4.Nc3 O-O 5.Bf4 d6 6.h3 c5 1/2

E61    King's Indian: Smyslov System ; *pwo
1.d4 Nf6 2.Nf3 g6 3.c4 Bg7 4.Nc3 O-O 5.Bg5 c5 6.e3 1/2

E61    King's Indian: Smyslov System ; (nat; per CA) *pwo
1.Nf3 g6 2.c4 Bg7 3.Nc3 Nf6 4.d4 d6 1/2

E62    King's Indian: Fianchetto: Larsen System
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 c6 7.O-O Bf5 1/2

E62    King's Indian: Fianchetto: Kavalek (Bronstein) Variation
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 c6 7.O-O Qa5 1/2

E62    King's Indian: Fianchetto (with...Nc6)
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nc6 1/2

E62    King's Indian: Fianchetto: Uhlmann (Szabo) Variation
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nc6 7.O-O e5 1/2

E62    King's Indian: Fianchetto: Lesser Simagin (Spassky) Variation
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nc6 7.O-O Bf5 1/2

E62    King's Indian: Fianchetto: Simagin Variation
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nc6 7.O-O Bg4 1/2

E63    King's Indian: Fianchetto: Panno System ; *pwo: was "Panno Variation"
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nc6 7.O-O a6 1/2

E63    King's Indian: Fianchetto: Panno System ; (alt) *pwo
1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.g3 O-O 5.Bg2 d6 6.O-O Nc6 7.Nc3 a6 8.d5 1/2

E64    King's Indian: Fianchetto: Yugoslav System
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 c5 1/2

E65    King's Indian: Fianchetto: Yugoslav 7.O-O
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 c5 7.O-O 1/2

E66    King's Indian: Fianchetto: Yugoslav Panno
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 c5 7.O-O Nc6 8.d5 1/2

E66    King's Indian: Fianchetto: Yugoslav Panno ; (add) *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 c5 7.O-O Nc6 8.d5 Na5
9.Nd2 a6 10.Qc2 Rb8 11.b3 b5 1/2

E66/05 King's Indian: Fianchetto: Modern Yugoslav Panno ; *pwo 4/01 add, nat (late Nc3), out of eco w/ Qc2
1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Nf3 O-O 5.Bg2 d6 6.O-O Nc6 7.d5 Na5 8.Nfd2 c5
9.Nc3 a6 10.Rb1 Rb8 11.b3 b5 12.Qc2 Qc7 1/2

E67    King's Indian: Fianchetto (with...Nd7)
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nbd7 1/2

; an interesting situation: the Line below after 10...dxe5 is also referenced
; in footnote 10 of E69/02. Apparently one did not recognize the other

E67/04 King's Indian: Fianchetto: 7...c6 ; *pwo 3/01 add, nat frm 7...c6 coming back in at 9.h3
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nbd7 7.O-O c6 8.e4 e5
9.h3 a6 10.dxe5 dxe5 11.Be3 1/2

E67    King's Indian: Fianchetto: Classical Variation
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nbd7 7.O-O e5 1/2

E68    King's Indian: Fianchetto: Classical Variation 8.e4 ; (ext fm 8.e4) *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nbd7 7.O-O e5 8.e4 c6
1/2

E68/17 King's Indian: Fianchetto: Classical Variation 7.Qc2 ; *pwo 5/01 add, nat, see also E67/08 (w/out e4)
1.d4 Nf6 2.Nf3 g6 3.c4 Bg7 4.g3 O-O 5.Bg2 d6 6.O-O Nbd7 7.Qc2 e5 8.Rd1 Re8
9.Nc3 c6 10.e4 Qe7 11.b3 1/2

E69    King's Indian: Fianchetto: Classical Main Line
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nbd7 7.O-O e5 8.e4 c6
9.h3 1/2

E69/10 King's Indian: Fianchetto: Classical 9...Qb6 ; *pwo 5/01 add, nat, footnote 57
1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 d6 6.Nc3 Nbd7 7.O-O e5 8.e4 c6
9.h3 Qb6 10.b3 exd4 11.Na4 1/2

E69/19 King's Indian: Fianchetto: Classical Main Line ; *pwo 4/01 add, footnote 120, nat (E67,E68,E69 are basically the same Game)
1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.g3 O-O 5.Bg2 d6 6.Nc3 Nbd7 7.O-O e5 8.h3 c6
9.e4 exd4 10.Nxd4 Re8 11.Re1 a5 12.Rb1 Nc5 13.b3 Bd7 14.Bf4 Qb6 1/2

E69/14 King's Indian: Fianchetto: Classical 9...Qb6 ; *pwo 5/01 add, nat
1.c4 Nf6 2.d4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 Nbd7 7.O-O e5 8.e4 c6
9.h3 Qb6 10.Re1 exd4 11.Nxd4 Ne8 12.Nb3 a5 1/2

E69/12 King's Indian: Fianchetto: Classical Main Line ; (nat) *pwo
1.Nf3 g6 2.c4 Bg7 3.d4 Nf6 4.g3 O-O 5.Bg2 d6 6.O-O Nbd7 7.Nc3 e5 8.e4 c6
9.h3 Qb6 10.d5 cxd5 1/2

E69/02 King's Indian: Fianchetto: Classical 9...a6 ; *pwo 5/01 add, nat
1.Nf3 g6 2.d4 Bg7 3.g3 d6 4.Bg2 Nf6 5.O-O O-O 6.c4 Nbd7 7.Nc3 e5 8.e4 c6
9.h3 a6 10.Re1 b5 1/2

E70    King's Indian Defense ; *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 1/2

E70/11 King's Indian Defense: Bd3 ; *pwo 3/01 add
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Bd3 O-O 6.Nge2 Nc6 7.O-O e5 8.d5 Nd4
9.Nxd4 exd4 10.Nb5 1/2

E70    King's Indian: Accelerated Averbakh System
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Bg5 1/2

E70    King's Indian: Kramer System
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nge2 1/2

E70/09 King's Indian: Kramer System: 6.Ng3 ; *pwo 6/01 add, footnote 43
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nge2 O-O 6.Ng3 e5 7.d5 c6 8.Be2 cxd5
9.cxd5 a6 1/2

E70/01 King's Indian: Benoni Formation ; (else A65/7) *pwo natural Line
1.d4 Nf6 2.c4 c5 3.d5 g6 4.Nc3 Bg7 5.e4 h6 1/2

E71    King's Indian: Makagonov System: 5.h3 ; (ext fm 5.h3) *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.h3 O-O 6.Bg5 c5 1/2

E72    King's Indian (with e4 & g3)
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.g3 1/2

E72    King's Indian: Pomar System
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.g3 O-O 6.Bg2 e5 7.Nge2 1/2

E73    King's Indian: 5.Be2
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 1/2

E73    King's Indian: Semi-Averbakh System
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Be3 1/2

E73    King's Indian: Averbakh System
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 1/2

E73/04 King's Indian: Averbakh System (...Na6) ; *pwo 3/01 add, footnote 19 (extended from recent Games past 8...Qe8)
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 Na6 7.Qd2 e5 8.d5 Qe8
9.Bd1 Nc5 10.Bc2 a5 11.Nge2 Bd7 12.f3 h5 1/2

E73/06 King's Indian: Averbakh System ; *pwo 3/01 subr fm e74
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 Nbd7 7.Qd2 e5 8.d5 Nc5
9.f3 a5 10.h4 c6 1/2

E74    King's Indian: Averbakh: 6...c5
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 c5 1/2

E75    King's Indian: Averbakh: Main Line
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 c5 7.d5 e6 1/2

E76    King's Indian: Four Pawns Attack
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 1/2

E76/09 King's Indian: Four Pawns Attack: Benoni Formation ; footnote 59 Qe1!?
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 c5 6.d5 O-O 7.Nf3 e6 8.dxe6 Bxe6
9.Bd3 Bg4 10.O-O Nc6 11.Qe1 1/2

E76/01 King's Indian: Four Pawns Attack: Exchange ; ECO footnote 7
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 c5 6.dxc5 Qa5 7.Bd3 Qxc5 8.Nf3 Nc6
9.Qe2 Bg4 10.Be3 Qa5 11.O-O Nd7 1/2

; intrestingly, ECO gives these two (above/below) separate
; Line numbers. Yet, they are the same.

;E76/07 King's Indian: Four Pawns Attack: Exchange ; footnote 43
;1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 c5 6.dxc5 Qa5 7.Bd3 Qxc5 8.Qe2 Bg4
;9.Nf3 Nc6 10.Be3 Qa5 11.O-O Nd7 1/2

E76/08 King's Indian: Four Pawns Attack: Benoni Formation ; (ext, else A65/7) *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 O-O 6.Nf3 c5 7.d5 a6 8.a4 1/2

E76    King's Indian: Four Pawns Attack ; (ext) *pwo (ECO footnote 22)
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 O-O 6.Nf3 Bg4 1/2

E77    King's Indian: Four Pawns Attack: 6.Be2
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 O-O 6.Be2 1/2

E77    King's Indian: Four Pawns Attack
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 O-O 6.Be2 c5 7.d5 e6 8.Nf3 1/2

E77    King's Indian: Four Pawns Attack: Florentine Gambit
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 O-O 6.Be2 c5 7.d5 e6 8.Nf3 exd5 9.e5
1/2

E79    King's Indian: Four Pawns Attack: Main Line
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 O-O 6.Be2 c5 7.Nf3 cxd4 8.Nxd4 Nc6
9.Be3 1/2

E80    King's Indian: Saemisch Variation
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 1/2

E80/11 King's Indian: Saemisch: 5...c6 ; *pwo 6/01 add, out of book w/ 8...O-O
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 c6 6.Be3 a6 7.Bd3 b5 8.Nge2 O-O
1/2

E81    King's Indian: Saemisch: 5...O-O
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 1/2

; E81 and A65 are hopelessly intertwined. Lines running 15 to 20 plies deep
; can easily pass into one and then back into the other.

E81/12 King's Indian: Saemisch: Sax Variation ; *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 a6 7.Qd2 b6 8.O-O-O c5
9.dxc5 bxc5 10.e5 Ne8 1/2

E81    King's Indian: Saemisch-Benoni (d5...a6) ; *pwo (subr fm A65)
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 c5 7.d5 a6 8.a4 1/2

E81    King's Indian: Saemisch-Benoni ; *pwo 6/01 (subr fm A65), 8.Qd2 qualifies as A65
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 c5 7.d5 e6 8.Bd3 1/2

E81    King's Indian: Saemisch-Benoni: Exchange ; *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 c5 7.dxc5 1/2

E81    King's Indian: Saemisch: Byrne Variation
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 c6 7.Bd3 a6 1/2

E81    King's Indian: Saemisch-Benoni: (d5...Nbd7) ; *pwo (subr fm A65)
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.d5 Nbd7 8.Nh3 1/2

E81    King's Indian: Saemisch: 6...Na6 ; *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 Na6 (7.Qd2) 1/2

E81/11 King's Indian: Saemisch: Commons Variation ; *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 Nbd7 7.Qd2 c5 8.Nge2 a6
9.O-O-O Qa5 10.Kb1 b5 11.dxc5 dxc5 (12.Nd5 Nxd5) 1/2

E81/01 King's Indian: Saemisch-Benoni ; *pwo 6/01 add, nat, footnote 2
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Bg5 a6 7.Qd2 c6 8.Bd3 b5
1/2

E81/02 King's Indian: Saemisch-Benoni ; *pwo (see also A65)
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Bg5 c5 7.d5 a6 1/2

E81/03 King's Indian: Saemisch-Benoni: Petrosian Variation ; *pwo (A65)
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Bg5 c5 7.d5 e6 8.Nge2 h6
9.Be3 exd5 10.cxd5 Nbd7 11.Ng3 a6 12.a4 h5 13.Be2 h4 14.Nf1 Nh7 1/2

E81/03 King's Indian: Saemisch-Benoni: Kremeneckij Variation ; *pwo (A65)
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Bg5 c5 7.d5 e6 8.Qd2 exd5
9.Nxd5 Be6 10.Ne2 Bxd5 11.cxd5 Nbd7 12.Nc3 a6 13.Be2 1/2

E81    King's Indian: Saemisch: 6.Bg5 7...Na6 ; *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Bg5 c5 7.d5 Na6 8.Qd2 Nc7
9.Bd3 1/2

E81    King's Indian: Saemisch: 6.Bg5 7...Nbd7 ; *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Bg5 c5 7.d5 Nbd7 8.Qd2 Re8
9.Nge2 a6 10.Bh6 1/2

E81    King's Indian: Saemisch: 6.Bg5 7...Qa5 ; *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Bg5 c5 7.d5 Qa5 8.Qd2 e6
9.a4 a6 10.Ra3 1/2

E81/04 King's Indian: Kramer System Saemisch ; (natural Line) *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nge2 O-O 6.f3 e5 7.Bg5 c6 8.Qd2 1/2

E81/01 King's Indian: Saemisch: Benoni Formation ; (subtracts Line from A65/7) *pwo nat
1.d4 Nf6 2.c4 c5 3.d5 g6 4.Nc3 Bg7 5.e4 d6 6.f3 O-O 7.Bg5 h6 1/2

E82    King's Indian: Saemisch: Double Fianchetto Variation
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 b6 1/2

E83    King's Indian: Saemisch: 6...Nc6
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 Nc6 1/2

E83    King's Indian: Saemisch: Panno Formation ; (ext fm 7...a6) *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 Nc6 7.Nge2 a6 8.Qd2 1/2

E84    King's Indian: Saemisch: Panno Main Line
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 Nc6 7.Nge2 a6 8.Qd2 Rb8
1/2

E84/11 King's Indian: Saemisch: Panno Main Line 9.h4 ; *pwo 6/01 add, footnote 65
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 Nc6 7.Nge2 a6 8.Qd2 Rb8
9.h4 h5 10.O-O-O b5 11.Bh6 e5 12.Bxg7 Kxg7 1/2

E85    King's Indian: Saemisch: Orthodox Variation
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 1/2

E86    King's Indian: Saemisch: Orthodox 7.Nge2 c6 ; (ext fm 7...c6) *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.Nge2 c6 8.Qd2 Nbd7
9.d5 cxd5 10.cxd5 1/2

E87    King's Indian: Saemisch: Orthodox 7.d5
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.d5 1/2

E87    King's Indian: Saemisch: Orthodox, Bronstein Variation
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.d5 Nh5 8.Qd2 Qh4+
9.g3 Nxg3 10.Qf2 Nxf1 11.Qxh4 Nxe3 12.Ke2 Nxc4 1/2

E88    King's Indian: Saemisch: Orthodox 7.d5 c6
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.d5 c6 1/2

E88/09 King's Indian: Saemisch: Orthodox 7.d5 c6, Main Line ; *pwo 6/01 add
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.d5 c6 8.Qd2 cxd5
9.cxd5 a6 10.Bd3 Nh5 11.Nge2 1/2

E89    King's Indian: Saemisch: Orthodox Main Line
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.d5 c6 8.Nge2 cxd5
1/2

E89/05 King's Indian: Saemisch: Orthodox, Karpov-Topalov ; Variation ; (nat) *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.Nge2 c6 8.Qd2 Nbd7
9.d5 cxd5 10.cxd5 a6 11.g4 h5 12.g5 Nh7 13.Rg1 1/2

E90    King's Indian: 5.Nf3
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 1/2

E90/22 King's Indian: Kluger Variation ; (add) *pwo (1964 footnote 143)
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.h3 c5 7.d5 e6 8.Bd3 1/2

E90/08 King's Indian: Orak Variation (h3...Nbd7) ; *pwo 3/01 add, footnote 51
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.h3 Nbd7 7.Bg5 c6 1/2

E90    King's Indian: Larsen Variation
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be3 1/2

E90    King's Indian: Zinnowitz Variation
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Bg5 1/2

E91    King's Indian: 6.Be2
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 1/2

E91    King's Indian: 6.Be2 ; (ext fm 6.Be2) *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 c5 7.d5 e6 1/2

E91    King's Indian: Kazakh Variation
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 Na6 1/2

E91/03 King's Indian: 6...Nbd7 7.Bg5 ; *pwo 3/01, add (pullback from E94)
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 Nbd7 7.Bg5 h6 8.Bh4 g5
1/2

E92    King's Indian: Classical Variation
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 1/2

E92    King's Indian: Petrosian System
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.d5 1/2

E92    King's Indian: Petrosian System: Stein Variation
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.d5 a5 1/2

E92    King's Indian: Andersson Variation
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.dxe5 1/2

E92    King's Indian: Gligoric-Taimanov System
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.Be3 1/2

E93    King's Indian: Petrosian System: Main Line
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.d5 Nbd7 1/2

E93    King's Indian: Petrosian System: Keres Variation
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.d5 Nbd7 8.Bg5 h6
9.Bh4 g5 10.Bg3 Nh5 11.h4 1/2

E94    King's Indian: Orthodox Variation
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O 1/2

E94    King's Indian: Orthodox: Donner Variation
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O c6 1/2

E94/02 King's Indian: Orthodox Variation (...c6); *pwo 3/01, add, E91 footnote 69 redirection to E94/2
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O c6 8.Be3 exd4
9.Nxd4 1/2

E94/04 King's Indian: Orthodox: 7...exd4 ; (add) *pwo (ECO footnote 22)
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O exd4 8.Nxd4 Re8
9.f3 c6 10.Be3 1/2

E94/08 King's Indian: Orthodox: 7...Na6 ; *pwo ECO footnote 44, see also E92/2
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Na6 8.Be3 Ng4
9.Bg5 Qe8 10.dxe5 dxe5 11.h3 h6 12.Bd2 Nf6 13.Be3 Nh5 14.c5 Nf4 15.Bb5 Qe6
16.Re1 1/2

E94/09 King's Indian: Orthodox: 7...Na6 8.Re1 ; *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Na6 8.Re1 c6
9.Bf1 1/2

E94    King's Indian: Orthodox Variation ; *pwo 3/01 add
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nbd7 8.Be3
1/2

E94/26 King's Indian: Orthodox: 7...Nbd7 ; (Line code added)
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nbd7 8.Be3 c6
9.d5 c5 10.Ne1 Ne8 1/2

E94/27 King's Indian: Orthodox (...d5) ; natural Line but footnote 156 *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.d5 Nbd7 8.O-O Nc5
9.Qc2 a5 10.Ne1 1/2

;E94    King's Indian: Orthodox Variation ; *pwo 3/01 add (natural Line)
;1.d4 d6 2.Nf3 g6 3.c4 Bg7 4.Nc3 Nd7 5.e4 e5 6.Be2 Ngf6 7.O-O O-O 8.Be3
;1/2

E95    King's Indian: Orthodox: 7...Nbd7 8.Re1
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nbd7 8.Re1
1/2

E96    King's Indian: Orthodox: 7...Nbd7 Main Line
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nbd7 8.Re1 c6
9.Bf1 a5 1/2

E97    King's Indian: Orthodox: Aronin-Taimanov Variation
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 1/2

E97    King's Indian: Orthodox: Aronin-Taimanov, Bayonet Attack
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7
9.b4 1/2

E97/11 King's Indian: Orthodox: Aronin-Taimanov 9.b4 ; *pwo add, nat fm 10.Re1
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7
9.b4 Nh5 10.Re1 Nf4 11.Bf1 a5 12.bxa5 Rxa5 13.Nd2 c5 14.a4 Ra6 15.Ra3 g5
16.g3 1/2

E97/28 King's Indian: Orthodox: Aronin-Taimanov 9.Nd2 ; *pwo ECO note 175
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7
9.Nd2 a5 10.a3 Nd7 11.Rb1 f5 12.b4 Kh8 13.f3 Ng8 14.Qc2 Ngf6 15.Nb5 axb4
16.axb4 Nh5 17.g3 Ndf6 1/2

E97/02 King's Indian: Orthodox: Aronin-Taimanov Variation ; (add) *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.Be3 Ng4
9.Bg5 f6 10.Bc1 1/2

E98    King's Indian: Orthodox: Aronin-Taimanov 9.Ne1
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7
9.Ne1 1/2

E98/02 King's Indian: Orthodox: Aronin-Taimanov (...Ne8) ; *pwo 3/01 footnote 7
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7
9.Ne1 Ne8 10.Nd3 f5 11.Bd2 Nf6 12.f3 1/2

E98/02 King's Indian: Orthodox: Aronin-Taimanov ; (nat) *pwo
1.Nf3 g6 2.c4 Bg7 3.Nc3 Nf6 4.d4 d6 5.e4 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7
9.Ne1 Ne8 10.Nd3 c5 1/2

E99/03 King's Indian: Orthodox: Aronin-Taimanov, Main Line ; (alt) *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Nf3 e5 7.O-O Nc6 8.d5 Ne7
9.Ne1 Nd7 10.Be3 f5 11.f3 f4 12.Bf2 g5 13.a4 Ng6 1/2

E99    King's Indian: Orthodox: Aronin-Taimanov, Benko Attack
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7
9.Ne1 Nd7 10.f3 f5 11.g4 1/2

E99    King's Indian: Orthodox: Aronin-Taimanov, Main Line ; (Be3->Nd3) *pwo
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7
9.Ne1 Nd7 10.f3 f5 11.Nd3 1/2

E99/16 King's Indian: Orthodox: Aronin-Taimanov 10.Nd3 ; *pwo 3/01 add
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7
9.Ne1 Nd7 10.Nd3 f5 11.f3 f4 12.Bd2 Nf6 13.c5 g5 14.cxd6 cxd6 15.Rc1 Ng6
16.Nb5 Rf7 17.Qc2 Ne8 18.a4 h5 19.Nf2 Bf8 1/2

E99/07 King's Indian: Orthodox: Aronin-Taimanov (without 11.Nf6) ; *pwo 3/01 add nat, else continuation of Line above
1.c4 Nf6 2.d4 g6 3.Nc3 d6 4.e4 Bg7 5.Be2 O-O 6.Nf3 e5 7.O-O Nc6 8.d5 Ne7
9.Ne1 Nd7 10.f3 f5 11.Nd3 f4 12.Bd2 g5 1/2

;-----beginning section 2----------------------------------------------------
; The Lines/Openings below either are very rare in Modern Games or have been
; superceded by longer Lines. Some might be found in Gambit collections and
; on-Line Games.

A00 Amar Gambit
1.Nh3 d5 2.g3 e5 3.f4 Bxh3 4.Bxh3 exf4 1/2
A00 Battambang Opening
1.Nc3 e5 2.a3 1/2
A00 Crab Opening
1.a4 e5 2.h4 1/2
A00 Grob: Fritz Gambit
1.g4 d5 2.Bg2 Bxg4 3.c4 1/2
A00 Grob: Romford Counter-Gambit
1.g4 d5 2.Bg2 Bxg4 3.c4 d4 1/2
A00 Hammerschlag (Fried fox/Pork chop Opening)
1.f3 e5 2.Kf2 1/2
A00 Mieses Opening
1.d3 e5 1/2
A00 Valencia Opening
1.d3 e5 2.Nd2 1/2
A00 Venezolana Opening
1.d3 c5 2.Nc3 Nc6 3.g3 1/2
A01 Nimzovich-Larsen Attack: Polish Variation
1.b3 b5 1/2
A01 Nimzovich-Larsen Attack: Symmetrical Variation
1.b3 b6 1/2
A02 Bird: From Gambit
1.f4 e5 1/2
A02 Bird: From Gambit: Lipke Variation
1.f4 e5 2.fxe5 d6 3.exd6 Bxd6 4.Nf3 Nh6 5.d4 1/2
A02 Bird: Hobbs Gambit
1.f4 g5 1/2
A03 Bird's Opening: Williams Gambit
1.f4 d5 2.e4 1/2
A03 Mujannah Opening
1.f4 d5 2.c4 1/2
A04 Reti: Herrstroem Gambit
1.Nf3 g5 1/2
A04/16 Reti: King's Indian Attack: Neo-Closed Sicilian ; (nat Line) *pwo
1.e4 c5 2.Nf3 d6 3.g3 Nf6 4.d3 g6 5.Bg2 Bg7 6.O-O Nc6 7.c3 O-O 8.Re1 Bd7
9.Nbd2 1/2
A06 Tennison (Lemberg, Zukertort) Gambit
1.Nf3 d5 2.e4 1/2
A07 Reti: King's Indian Attack
1.Nf3 d5 2.g3 g6 1/2
A10 English: Jaenisch Gambit
1.c4 b5 1/2
A12 English: Bled Variation
1.c4 c6 2.Nf3 d5 3.b3 Nf6 4.Bb2 g6 1/2
A15 English Orang-utan
1.c4 Nf6 2.b4 1/2
A16 English: Anglo-Gruenfeld Defense
1.c4 Nf6 2.Nc3 d5 1/2
A18 English: Mikenas-Carls: Kevitz Variation
1.c4 Nf6 2.Nc3 e6 3.e4 Nc6 1/2
A20 English: Nimzovich Variation
1.c4 e5 2.Nf3 1/2
A21 English: Smyslov Defense
1.c4 e5 2.Nc3 d6 3.Nf3 Bg4 1/2
A22 English: Bremen: Reverse Dragon
1.c4 e5 2.Nc3 Nf6 3.g3 d5 1/2
A25 English: Closed 5.Rb1: Taimanov Variation
1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Rb1 Nh6 1/2
A28 English: Four Knights System
1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 1/2
A38 English: Symmetrical: Main Line (with b3)
1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.b3 1/2
A43 Hawk (Habichd) Defense
1.d4 c5 2.d5 Nf6 3.Nf3 c4 1/2
A43 Old Benoni: Schmid's System
1.d4 c5 2.d5 d6 3.Nc3 g6 1/2
A45 Blackmar-Diemer Gambit
1.d4 Nf6 2.f3 d5 3.e4 1/2
A45 Canard Opening
1.d4 Nf6 2.f4 1/2
A45 Gedult Attack
1.d4 Nf6 2.f3 d5 3.g4 1/2
A45 Paleface Attack
1.d4 Nf6 2.f3 1/2
A45 Poisoned Spike (Gibbins-Wiedenhagen) Gambit
1.d4 Nf6 2.g4 Nxg4 3.e4 d6 4.Be2 Nf6 5.Nc3 1/2
A45 Queen's Pawn: Bronstein Gambit
1.d4 Nf6 2.g4 1/2
A46 Doery Defense
1.d4 Nf6 2.Nf3 Ne4 1/2
A47 Queen's Indian: Marienbad System: Berg Variation
1.d4 Nf6 2.Nf3 b6 3.g3 Bb7 4.Bg2 c5 5.c4 cxd4 6.Qxd4 1/2
A53 Old Indian: Steiner-Wade Variation
1.d4 Nf6 2.c4 d6 3.Nc3 e5 4.d5 (Be7 5.e4 O-O 6.Bd3 Ne8) 1/2
A57 Benko Gambit: Zaitsev System
1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.Nc3 1/2
A58 Benko Gambit: Nd2 Variation
1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 d6 7.Nf3 g6 8.Nd2
1/2
A61 Benoni: Fianchetto Variation
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.g3 1/2
A62 Benoni: Fianchetto Variation
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.g3 Bg7 8.Bg2 O-O
1/2
A66 Benoni: Mikenas Variation
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.e5 1/2
A80 Dutch: Krejcik Gambit
1.d4 f5 2.g4 1/2
A80 Dutch: Korchnoi Attack
1.d4 f5 2.h3 1/2
A80 Dutch: Von Pretzel Gambit
1.d4 f5 2.Qd3 e6 3.g4 1/2
A81 Dutch: Leningrad: Basman System
1.d4 f5 2.g3 g6 3.Bg2 Bg7 4.Nf3 c6 5.O-O Nh6 1/2
A82 Dutch: Staunton Gambit
1.d4 f5 2.e4 1/2
A83 Dutch: Staunton Gambit: Nimzovich Variation
1.d4 f5 2.e4 fxe4 3.Nc3 Nf6 4.Bg5 b6 1/2
A83 Dutch: Staunton Gambit: Lasker Variation
1.d4 f5 2.e4 fxe4 3.Nc3 Nf6 4.Bg5 g6 5.f3 1/2
A83 Dutch: Staunton Gambit: Alekhine Variation
1.d4 f5 2.e4 fxe4 3.Nc3 Nf6 4.Bg5 g6 5.h4 1/2
A84 Dutch Defense
1.d4 f5 2.c4 1/2
A84 Dutch: Staunton Gambit Deferred
1.d4 f5 2.c4 e6 3.e4 1/2
A86 Dutch (with c4 & g3)
1.d4 f5 2.c4 Nf6 3.g3 1/2
A92 Dutch: Stonewall (with Nc3)
1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d5 7.Nc3 1/2
A95 Dutch: Stonewall: Chekhover Variation ; (seldom played-pwo)
1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d5 7.Nc3 c6 8.Qc2 Qe8
9.Bg5 1/2
A97 Dutch: Ilyin-Genevsky: Winter Variation ; (seldom played-pwo)
1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d6 7.Nc3 Qe8 8.Re1 1/2

B00 Barnes Defense
1.e4 f6 1/2
B00 Corn stalk Defense
1.e4 a5 1/2
B00 Fred
1.e4 f5 1/2
B00 Hippopotamus Defense
1.e4 Nh6 2.d4 g6 3.c4 f6 1/2
B00 KP: Colorado counter
1.e4 Nc6 2.Nf3 f5 1/2
B00 KP: Neo-Mongoloid Defense
1.e4 Nc6 2.d4 f6 1/2
B00 KP: Nimzovich Defense: Wheeler Gambit
1.e4 Nc6 2.b4 Nxb4 3.c3 Nc6 4.d4 1/2
B00 Lemming Defense
1.e4 Na6 1/2
B00 Reversed Grob: (Borg/Basman Defense/macho Grob)
1.e4 g5 1/2
B01 Scandinavian: Richter Variation
1.e4 d5 2.exd5 Nf6 3.d4 g6 1/2
B01 Scandinavian: Anderssen Counter-Attack: Orthodox Attack
1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.d4 e5 5.dxe5 Bb4 6.Bd2 Nc6 7.Nf3 1/2
B01 Scandinavian: Anderssen Counter-Attack: Goteborg System
1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.d4 e5 5.Nf3 1/2
B01 Scandinavian: Anderssen Counter-Attack: Collijn Variation
1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.d4 e5 5.Nf3 Bg4 1/2
B02 Alekhine's Defense
1.e4 Nf6 1/2
B02 Alekhine's Defense: Krejcik Variation
1.e4 Nf6 2.Bc4 1/2
B02 Alekhine's Defense: Welling Variation
1.e4 Nf6 2.e5 Nd5 3.b3 1/2
B02 Alekhine's Defense
1.e4 Nf6 2.e5 Nd5 3.c4 1/2
B02 Alekhine's Defense: Steiner Variation
1.e4 Nf6 2.e5 Nd5 3.c4 Nb6 4.b3 1/2
B02 Alekhine's Defense: Two Pawns (Lasker's) Attack
1.e4 Nf6 2.e5 Nd5 3.c4 Nb6 4.c5 1/2
B02 Alekhine's Defense: Mokele Mbembe (Buecker) Variation
1.e4 Nf6 2.e5 Ne4 1/2
B03 Alekhine's Defense: O'Sullivan Gambit
1.e4 Nf6 2.e5 Nd5 3.d4 b5 1/2
B03 Alekhine's Defense
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 1/2
B03 Alekhine's Defense: Four Pawns Attack
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 1/2
B03 Alekhine's Defense: Four Pawns Attack: Trifunovic Variation
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 Bf5 1/2
B03 Alekhine's Defense: Four Pawns Attack: 7.Be3
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 dxe5 6.fxe5 Nc6 7.Be3 1/2
B03 Alekhine's Defense: Four Pawns Attack: Ilyin-Genevsky
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 dxe5 6.fxe5 Nc6 7.Nf3 Bg4 8.e6 fxe6
9.c5 1/2
B03 Alekhine's Defense: Four Pawns Attack: Planinc Variation
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 g5 1/2
B05 Alekhine's Defense: Modern Variation: 4...Bg4
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Bg4 1/2
B05 Alekhine's Defense: Modern: Alekhine Variation
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Bg4 5.c4 1/2
B05 Alekhine's Defense: Modern: Vitolins Attack
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Bg4 5.c4 Nb6 6.d5 1/2
B05 Alekhine's Defense: Modern: Panov Variation
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Bg4 5.h3 1/2
B06 Pirc-Robatsch (Bg5) ; *pwo
1.e4 g6 2.d4 Bg7 3.Bg5 d6 1/2
B06 Pirc-Robatsch: 4.Be3 b6 ; (add) *pwo
1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.Be3 b6 1/2
B06 Pirc-Robatsch: 4.Be3 Nh6 ; (add) *pwo
1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.Be3 Nh6 1/2
B06/14 Robatsch Defense: Geller's System ; (was B07) *pwo
1.e4 g6 2.d4 Bg7 3.Nf3 d6 4.c3 Nc6 1/2
B06/14 Robatsch Defense ; (sub fm B07) *pwo
1.e4 g6 2.d4 Bg7 3.Nf3 d6 4.c3 Nf6 5.Qc2 1/2
B07 Pirc: Sveshnikov System
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.g3 1/2
B08 Pirc: Classical (two Knights) System
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 1/2
B10 Caro-Kann: Hillbilly Attack
1.e4 c6 2.Bc4 1/2
B12 Caro-Kann: Edinburgh Variation
1.e4 c6 2.d4 d5 3.Nd2 Qb6 1/2
B12 de Bruycker Defense
1.e4 c6 2.d4 Na6 3.Nc3 Nc7 1/2
B15 Caro-Kann: Gurgenidze Counter-Attack
1.e4 c6 2.d4 d5 3.Nc3 b5 1/2
B20 Sicilian: Wing Gambit: Santasiere Variation
1.e4 c5 2.b4 cxb4 3.c4 1/2
B27 Sicilian Defense
1.e4 c5 2.Nf3 1/2
B27 Sicilian: Katalimov Variation
1.e4 c5 2.Nf3 b6 1/2
B27 Sicilian: Acton Extension
1.e4 c5 2.Nf3 g6 3.c4 Bh6 1/2
B27 Sicilian: Stiletto (Althouse) Variation
1.e4 c5 2.Nf3 Qa5 1/2
B40 Sicilian: Pin: Jaffe Variation
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Bb4 6.Bd3 e5 1/2
B58 Sicilian: Boleslavsky: Louma Variation
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 e5 7.Nxc6 1/2
B62 Sicilian: Richter-Rauzer: Podvebrady Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Nb3 1/2
B62 Sicilian: Richter-Rauzer: Richter Attack
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Nxc6 1/2
B65 Sicilian: Richter-Rauzer: Rauzer Attack...Be7...Nxd4 Defense
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 Be7
8.O-O-O O-O 9.f4 Nxd4 1/2
B73 Sicilian: Dragon: Classical, Zollner Gambit ; (seldom played-pwo)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.O-O O-O
9.f4 Qb6 10.e5 1/2
B74 Sicilian: Dragon: Classical, Alekhine Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.O-O O-O
9.Nb3 a5 1/2
B74 Sicilian: Dragon: Classical, Bernard Defense
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.O-O O-O
9.Nb3 Be6 10.f4 Na5 11.f5 Bc4 12.Bd3 Bxd3 13.cxd3 d5 1/2
B74 Sicilian: Dragon: Classical, Stockholm Attack
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.O-O O-O
9.Nb3 Be6 10.f4 Na5 11.f5 Bc4 12.Nxa5 Bxe2 13.Qxe2 Qxa5 14.g4 1/2
B80 Sicilian: Scheveningen: Vitolins Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bb5+ 1/2

C00 French Defense
1.e4 e6 2.d4 d5 1/2
C00 French Defense
1.e4 e6 2.Nc3 1/2
C00 Lengfellner System
1.e4 e6 2.d4 d6 1/2
C00 St.George Defense
1.e4 e6 2.d4 a6 1/2
C01 French: Exchange Variation
1.e4 e6 2.d4 d5 3.exd5 1/2
C01 French: Exchange: Bogolyubov Variation
1.e4 e6 2.d4 d5 3.exd5 exd5 4.Nc3 Nf6 5.Bg5 Nc6 1/2
C06 French: Tarrasch: Leningrad Variation
1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3 c5 6.c3 Nc6 7.Ne2 cxd4 8.cxd4 Nb6
1/2
C10 French: Rubinstein Variation
1.e4 e6 2.d4 d5 3.Nc3 dxe4 1/2
C10 French: Frere (Becker) Variation
1.e4 e6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Qd5 1/2
C11 French: Henneberger Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Be3 1/2
C11 French: Steinitz: Bradford Attack
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7 5.f4 c5 6.dxc5 Bxc5 7.Qg4 1/2
C11 French: Steinitz: Brodsky-Jones Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7 5.f4 c5 6.dxc5 Nc6 7.a3 Bxc5 8.Qg4 O-O
9.Nf3 f6 1/2
C12 French: MacCutcheon: Advance Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 1/2
C12 French: MacCutcheon: Dr.Olland (Dutch) Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Bc1 1/2
C12 French: MacCutcheon: Tartakower Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Bd2 Nfd7 1/2
C12 French: MacCutcheon: Bernstein Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Bh4 1/2
C12 French: MacCutcheon: Chigorin Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.exf6 1/2
C12 French: MacCutcheon: Grigoriev Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.exf6 hxg5 7.fxg7 Rg8 8.h4 gxh4
9.Qg4 1/2
C13 French: Classical: Anderssen Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.Bxf6 1/2
C13 French: Albin-Alekhine-Chatard Attack: Teichmann Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.h4 f6 1/2
C13 French: Albin-Alekhine-Chatard Attack: Spielmann Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.h4 O-O 1/2
C13 French: Classical: Vistaneckis (Nimzovich) Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Ng8 1/2
C13 French: Classical: Frankfurt Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Ng8 6.Be3 b6 1/2
C14 French: Classical Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 1/2
C14 French: Classical: Tarrasch Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 7.Bd3 1/2
C14 French: Classical: Rubinstein Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 7.Qd2 1/2
C14 French: Classical: Pollock Variation
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 7.Qg4 1/2
C15 French: Winawer: Alekhine Gambit
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Nge2 dxe4 5.a3 Bxc3+ 1/2
C17 French: Winawer: Advance Variation
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 1/2
C17 French: Winawer: Advance, Rauzer Variation
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 cxd4 6.axb4 dxc3 7.Nf3 1/2
C20 KP: Indian Opening
1.e4 e5 2.d3 1/2
C20 KP: King's Head Opening
1.e4 e5 2.f3 1/2
C20 KP: Mengarini's Opening
1.e4 e5 2.a3 1/2
C20 KP: Napoleon's Opening
1.e4 e5 2.Qf3 1/2
C20 KP: Patzer Opening
1.e4 e5 2.Qh5 1/2
C21 Centre Game: Kieseritsky Variation
1.e4 e5 2.d4 exd4 3.Nf3 c5 4.Bc4 b5 1/2
C21 Centre Game
1.e4 e5 2.d4 exd4 3.Qxd4 1/2
C21 Danish Gambit: Collijn Defense
1.e4 e5 2.d4 exd4 3.c3 dxc3 4.Bc4 cxb2 5.Bxb2 Qe7 1/2
C21 Halasz Gambit
1.e4 e5 2.d4 exd4 3.f4 1/2
C22 Centre Game: Hall Variation
1.e4 e5 2.d4 exd4 3.Qxd4 Nc6 4.Qc4 1/2
C22 Centre Game: Charousek Variation
1.e4 e5 2.d4 exd4 3.Qxd4 Nc6 4.Qe3 Bb4+ 5.c3 Be7 1/2
C22 Centre Game: l'Hermet Variation
1.e4 e5 2.d4 exd4 3.Qxd4 Nc6 4.Qe3 f5 1/2
C23 Bishop's Opening: Four Pawns' Gambit
1.e4 e5 2.Bc4 Bc5 3.b4 Bxb4 4.f4 exf4 5.Nf3 Be7 6.d4 Bh4+ 7.g3 fxg3
8.O-O gxh2+ 9.Kh1 1/2
C23 Bishop's Opening: Lewis Counter-Gambit
1.e4 e5 2.Bc4 Bc5 3.c3 d5 1/2
C23 Bishop's Opening: Pratt Variation
1.e4 e5 2.Bc4 Bc5 3.c3 Nf6 4.d4 exd4 5.e5 d5 6.exf6 dxc4 7.Qh5 O-O 1/2
C23 Bishop's Opening: del Rio Variation
1.e4 e5 2.Bc4 Bc5 3.c3 Qg5 1/2
C23 Bishop's Opening: Lewis Gambit
1.e4 e5 2.Bc4 Bc5 3.d4 1/2
C23 Bishop's Opening: Lisitsyn Variation
1.e4 e5 2.Bc4 c6 3.d4 d5 4.exd5 cxd5 5.Bb5+ Bd7 6.Bxd7+ Nxd7 7.dxe5 Nxe5
8.Ne2 1/2
C23 Bishop's Opening: Calabrese Counter-Gambit: Jaenisch Variation
1.e4 e5 2.Bc4 f5 3.d3 1/2
C24 Bishop's Opening: Greco Gambit
1.e4 e5 2.Bc4 Nf6 3.f4 1/2
C24 Bishop's Opening: Burger Attack ; p
1.e4 e5 2.Bc4 Nf6 3.g4 1/2
C25 Vienna: Zhuravlev Counter-Gambit
1.e4 e5 2.Nc3 Bb4 3.Qg4 Nf6 1/2
C25 Vienna: Fyfe Gambit
1.e4 e5 2.Nc3 Nc6 3.d4 1/2
C25 Vienna: Steinitz Gambit: Fraser-Minckwitz Variation
1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.d4 Qh4+ 5.Ke2 b6 1/2
C25 Vienna: Hamppe-Muzio Gambit
1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3 g5 5.Bc4 g4 6.O-O 1/2
C25 Vienna: Hamppe-Muzio: Dubois Variation
1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3 g5 5.Bc4 g4 6.O-O gxf3 7.Qxf3 Ne5
8.Qxf4 Qf6 1/2
C25 Vienna: Pierce Gambit
1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3 g5 5.d4 1/2
C25 Vienna: Pierce Gambit: Rushmere Attack
1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3 g5 5.d4 g4 6.Bc4 gxf3 7.O-O d5 8.exd5 Bg4
9.dxc6 1/2
C25 Vienna: Hamppe-Allgaier Gambit: Alapin Variation
1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3 g5 5.h4 g4 6.Ng5 d6 1/2
C26 Vienna: Mengarini Variation
1.e4 e5 2.Nc3 Nf6 3.a3 1/2
C27 Vienna Game
1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4 4.Qh5 Nd6 5.Bb3 Be7 1/2
C27 Vienna: Adams Gambit
1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4 4.Qh5 Nd6 5.Bb3 Nc6 6.d4 1/2
C29 Vienna Gambit: Steinitz Variation
1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.d3 1/2
C29 Vienna Gambit: Wurzburger Trap
1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.d3 Qh4+ 6.g3 Nxg3 7.Nf3 Qh5 8.Nxd5
1/2
C29 Vienna Gambit: Kaufmann Variation
1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.Nf3 Bg4 6.Qe2 1/2
C29 Vienna Gambit: Bardeleben Variation
1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.Qf3 f5 1/2
C29 Vienna Gambit: Heyde Variation
1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.Qf3 f5 6.d4 1/2
C30 KGD: Classical Counter-Gambit
1.e4 e5 2.f4 Bc5 3.Nf3 d6 4.c3 f5 1/2
C30 KGD: Classical: Reti Variation
1.e4 e5 2.f4 Bc5 3.Nf3 d6 4.c3 f5 5.fxe5 dxe5 6.d4 exd4 7.Bc4 1/2
C30 KGD: Keene's Defense
1.e4 e5 2.f4 Qh4+ 3.g3 Qe7 1/2
C30 KGD: Norwalde Variation
1.e4 e5 2.f4 Qf6 1/2
C30 KGD: Norwalde Variation: Buecker Gambit
1.e4 e5 2.f4 Qf6 3.Nf3 Qxf4 4.Nc3 Bb4 5.Bc4 1/2
C32 KGD: Falkbeer: 5.dxe4
1.e4 e5 2.f4 d5 3.exd5 e4 4.d3 Nf6 5.dxe4 1/2
C32 KGD: Falkbeer: Alapin Variation
1.e4 e5 2.f4 d5 3.exd5 e4 4.d3 Nf6 5.dxe4 Nxe4 6.Nf3 Bc5 7.Qe2 Bf2+
8.Kd1 Qxd5+ 9.Nfd2 1/2
C32 KGD: Falkbeer: Tarrasch Variation
1.e4 e5 2.f4 d5 3.exd5 e4 4.d3 Nf6 5.dxe4 Nxe4 6.Nf3 Bc5 7.Qe2 Bf5 8.g4 O-O
1/2
C33 KGA: Bishop's Gambit: Bryan Counter-Gambit
1.e4 e5 2.f4 exf4 3.Bc4 b5 1/2
C33 KGA: Bishop's Gambit: Ruy Lopez Defense
1.e4 e5 2.f4 exf4 3.Bc4 c6 1/2
C33 KGA: Bishop's Gambit: Anderssen Variation
1.e4 e5 2.f4 exf4 3.Bc4 d5 4.Bxd5 c6 1/2
C33 KGA: Bishop's Gambit: Boren-Svenonius Variation
1.e4 e5 2.f4 exf4 3.Bc4 d5 4.Bxd5 Qh4+ 5.Kf1 Bd6 1/2
C33 KGA: Bishop's Gambit: Gifford Variation
1.e4 e5 2.f4 exf4 3.Bc4 d5 4.Bxd5 Qh4+ 5.Kf1 g5 6.g3 1/2
C33 KGA: Bishop's Gambit: Maurian Defense
1.e4 e5 2.f4 exf4 3.Bc4 Nc6 1/2
C33 KGA: Bishop's Gambit: Paulsen Attack
1.e4 e5 2.f4 exf4 3.Bc4 Nf6 4.Nc3 Bb4 5.e5 1/2
C33 KGA: Bishop's Gambit: Bryan Counter-Gambit
1.e4 e5 2.f4 exf4 3.Bc4 Qh4+ 4.Kf1 b5 1/2
C33 KGA: Bishop's Gambit: Greco Variation
1.e4 e5 2.f4 exf4 3.Bc4 Qh4+ 4.Kf1 Bc5 1/2
C33 KGA: Bishop's Gambit: Grimm Attack
1.e4 e5 2.f4 exf4 3.Bc4 Qh4+ 4.Kf1 g5 5.Nc3 Bg7 6.d4 d6 7.e5 1/2
C33 KGA: Bishop's Gambit: Classical Defense
1.e4 e5 2.f4 exf4 3.Bc4 Qh4+ 4.Kf1 g5 5.Nc3 Bg7 6.d4 Ne7 1/2
C33 KGA: Bishop's Gambit: McDonnell Attack
1.e4 e5 2.f4 exf4 3.Bc4 Qh4+ 4.Kf1 g5 5.Nc3 Bg7 6.d4 Ne7 7.g3 1/2
C33 KGA: Bishop's Gambit: McDonnell Attack
1.e4 e5 2.f4 exf4 3.Bc4 Qh4+ 4.Kf1 g5 5.Nc3 Bg7 6.g3 1/2
C33 KGA: Bishop's Gambit: Fraser Variation
1.e4 e5 2.f4 exf4 3.Bc4 Qh4+ 4.Kf1 g5 5.Nc3 Bg7 6.g3 fxg3 7.Qf3 1/2
C33 KGA: Bishop's Gambit: Classical Defense, Cozio Attack
1.e4 e5 2.f4 exf4 3.Bc4 Qh4+ 4.Kf1 g5 5.Qf3 1/2
C33 KGA: Bishop's Gambit: Boden Defense
1.e4 e5 2.f4 exf4 3.Bc4 Qh4+ 4.Kf1 Nc6 1/2
C33 KGA: Breyer Gambit
1.e4 e5 2.f4 exf4 3.Qf3 1/2
C33 KGA: Carrera (Basman) Gambit
1.e4 e5 2.f4 exf4 3.Qe2 1/2
C33 KGA: Lopez-Gianutio Counter-Gambit: Hein Variation
1.e4 e5 2.f4 exf4 3.Bc4 f5 4.Qe2 Qh4+ 5.Kd1 fxe4 6.Nc3 Kd8 1/2
C33 KGA: Orsini Gambit
1.e4 e5 2.f4 exf4 3.b3 1/2
C33 KGA: Pawn's Gambit (Stamma Gambit)
1.e4 e5 2.f4 exf4 3.h4 1/2
C33 KGA: Schurig Gambit
1.e4 e5 2.f4 exf4 3.Bd3 1/2
C33 KGA: Tumbleweed Gambit
1.e4 e5 2.f4 exf4 3.Kf2 1/2
C33 KGA: Villemson (Steinitz) Gambit
1.e4 e5 2.f4 exf4 3.d4 1/2
C37 KGA: Blachly Gambit
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 Nc6 1/2
C37 KGA: Herzfeld Gambit
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Ne5 Qh4+ 6.Kf1 Nc6 1/2
C37 KGA: Lolli Gambit: (wild Muzio Gambit) ; (seldom played-pwo)
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Bxf7+ 1/2
C37 KGA: Lolli Gambit: Young Variation ; (seldom played-pwo)
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Bxf7+ Kxf7 6.O-O gxf3 7.Qxf3 Qf6
8.d4 Qxd4+ 9.Be3 Qf6 10.Nc3 1/2
C38 KGA: Greco Gambit
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 Bg7 5.h4 h6 6.d4 d6 7.Nc3 c6 8.hxg5 hxg5
9.Rxh8 Bxh8 10.Ne5 1/2
C39 KGA: Allgaier: Walker Attack
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ng5 h6 6.Nxf7 Kxf7 7.Bc4+ 1/2
C39 KGA: Allgaier: Urusov Attack
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ng5 h6 6.Nxf7 Kxf7 7.Bc4+ d5
8.Bxd5+ Kg7 9.d4 1/2
C39 KGA: Allgaier: Horny Defense
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ng5 h6 6.Nxf7 Kxf7 7.Qxg4 Nf6
8.Qxf4 Bd6 1/2
C39 KGA: Kieseritsky: Polerio Defense ;
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 Be7 1/2
C39 KGA: Kieseritsky: Brentano (Campbell) Defense
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 d5 1/2
C39 KGA: Kieseritsky: Brentano Defense
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 d5 6.d4 Nf6 7.Bxf4 1/2
C39 KGA: Kieseritsky: Brentano Defense, Caro Variation
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 d5 6.d4 Nf6 7.Bxf4 Nxe4 8.Nd2
1/2
C39 KGA: Kieseritsky: Brentano Defense, Kaplanek Variation
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 d5 6.d4 Nf6 7.exd5 Qxd5 8.Nc3 Bb4
9.Kf2 1/2
C39 KGA: Kieseritsky: Long Whip (Stockwhip, Classical) Defense
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 h5 1/2
C39 KGA: Kieseritsky: Neumann Defense
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 Nc6 1/2
C39 KGA: Kieseritsky: Berlin Defense 6.Bc4
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 Nf6 6.Bc4 1/2
C39 KGA: Kieseritsky: Salvio Defense, Cozio Variation
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 Qe7 6.d4 f5 7.Bc4 1/2
C40 Latvian: Behting Variation
1.e4 e5 2.Nf3 f5 3.Bc4 fxe4 4.Nxe5 Qg5 5.Nf7 Qxg2 6.Rf1 d5 7.Nxh8 Nf6 1/2
C41 Philidor: Lopez Counter-Gambit: Jaenisch Variation
1.e4 e5 2.Nf3 d6 3.Bc4 f5 4.d4 exd4 5.Ng5 Nh6 6.Nxh7 1/2
C41 Philidor: Paulsen Attack
1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Nxd4 d5 5.exd5 1/2
C41 Philidor: Philidor Counter-Gambit
1.e4 e5 2.Nf3 d6 3.d4 f5 1/2
C41 Philidor: Philidor Counter-Gambit: Berger Variation
1.e4 e5 2.Nf3 d6 3.d4 f5 4.dxe5 fxe4 5.Ng5 d5 6.e6 Bc5 7.Nc3 1/2
C41 Philidor: Hanham: Delmar Variation
1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.c3 1/2
C41 Philidor: Hanham: Kmoch Variation
1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.Ng5 1/2
C41 Philidor: Hanham: Berger Variation
1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.Ng5 Nh6 6.f4 Be7 7.O-O O-O 8.c3 d5
1/2
C41 Philidor: Hanham: Krause Variation
1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.O-O 1/2
C41 Philidor: Nimzovich: Klein Variation
1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Bc4 1/2
C41 Philidor: Nimzovich: Sokolsky Variation
1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.dxe5 Nxe4 5.Nbd2 1/2
C41 Philidor: Nimzovich: Locock Variation
1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Ng5 1/2
;C42 Boden-Kieseritsky Gambit ; (revised, had been C27) *pwo
;1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4 4.Nf3 1/2
;C42 Boden-Kieseritsky Gambit: Lichtenhein Defense ; (revised, had been C27) *pwo
;1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4 4.Nf3 d5 1/2
C42 Petrov: Italian Variation
1.e4 e5 2.Nf3 Nf6 3.Bc4 1/2
C42 Petrov: Classical Attack
1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 1/2
C42 Petrov: Classical Attack: Krause Variation
1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Be7 7.O-O Nc6 8.Re1 Bg4
9.c3 f5 10.c4 1/2
C42 Petrov: Classical Attack: Maroczy Variation
1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Be7 7.O-O Nc6 8.Re1 Bg4
9.c3 f5 10.c4 Bh4 1/2
C42 Petrov: Classical Attack: Close Variation
1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 Nf6 1/2
C42/01 Russian Defense: (Petroff's) Lichtehein Variation ; desc chg; Line code added
1.e4 e5 2.Nf3 Nf6 3.Bc4 Nxe4 4.Nc3 d5 1/2
C43 Petrov: Modern Attack: Steinitz Variation
1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.e5 Ne4 5.Qe2 1/2
C43 Petrov: Modern Attack: Bardeleben Variation
1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.e5 Ne4 5.Qe2 Nc5 6.Nxd4 Nc6 1/2
C44 Dresden Opening ; (seldom played-pwo)
1.e4 e5 2.Nf3 Nc6 3.c4 1/2
C44 Irish (Chicago) Gambit ; (seldom played-pwo)
1.e4 e5 2.Nf3 Nc6 3.Nxe5 Nxe5 4.d4 1/2
C44 King's Pawn Game
1.e4 e5 2.Nf3 Nc6 1/2
C44 Ponziani Opening
1.e4 e5 2.Nf3 Nc6 3.c3 1/2
C44 Ponziani: Romanishin Variation
1.e4 e5 2.Nf3 Nc6 3.c3 Be7 1/2
C44 Ponziani: Caro Variation
1.e4 e5 2.Nf3 Nc6 3.c3 d5 4.Qa4 Bd7 1/2
C44 Ponziani: Leonhardt Variation
1.e4 e5 2.Nf3 Nc6 3.c3 d5 4.Qa4 Nf6 1/2
C44 Ponziani Counter-Gambit
1.e4 e5 2.Nf3 Nc6 3.c3 f5 1/2
C44 Ponziani Counter-Gambit: Schmidt Attack
1.e4 e5 2.Nf3 Nc6 3.c3 f5 4.d4 d6 5.d5 1/2
C44 Ponziani Counter-Gambit: Cordel Variation ; (seldom played-pwo)
1.e4 e5 2.Nf3 Nc6 3.c3 f5 4.d4 d6 5.d5 fxe4 6.Ng5 Nb8 7.Nxe4 Nf6 8.Bd3 Be7
1/2
C44 Ponziani: Jaenisch Counter-Attack
1.e4 e5 2.Nf3 Nc6 3.c3 Nf6 1/2
C44 Ponziani: Reti Variation ; (seldom played-pwo)
1.e4 e5 2.Nf3 Nc6 3.c3 Nge7 1/2
C44 Scotch: Relfsson Gambit ('MacLopez')
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bb5 1/2
C44 Scotch Gambit
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 Bb4+ 1/2
C44 Scotch Gambit
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 Bb4+ 5.c3 dxc3 6.bxc3 1/2
C44 Scotch Gambit: Cochrane Variation
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 Bb4+ 5.c3 dxc3 6.bxc3 Ba5 7.e5 1/2
C44 Scotch Gambit: Hanneken Variation
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 Bb4+ 5.c3 dxc3 6.O-O cxb2 7.Bxb2 Nf6
8.Ng5 O-O 9.e5 Nxe5 1/2
C44 Scotch Gambit: Vitzhum Attack
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 Bc5 5.Ng5 Nh6 6.Qh5 1/2
C44 Scotch Gambit: Benima Defense ; (seldom played-pwo)
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 Be7 1/2
C44 Scotch Gambit: Dubois-Reti Defense ; (seldom played-pwo)
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 Nf6 1/2
C44 Scotch: Sea-cadet mate
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.c3 dxc3 5.Nxc3 d6 6.Bc4 Bg4 7.O-O Ne5
8.Nxe5 Bxd1 9.Bxf7+ Ke7 10.Nd5# 1/2
C44 Scotch: Lolli Variation
1.e4 e5 2.Nf3 Nc6 3.d4 Nxd4 1/2
C44 Scotch: Cochrane Variation ; (seldom played-pwo)
1.e4 e5 2.Nf3 Nc6 3.d4 Nxd4 4.Nxe5 Ne6 5.Bc4 c6 6.O-O Nf6 7.Nxf7 1/2
C44 Tayler Opening ; (seldom played-pwo)
1.e4 e5 2.Nf3 Nc6 3.Be2 Nf6 4.d4 1/2
C45 Scotch: Paulsen: Gunsberg Defense
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Be3 Qf6 6.c3 Nge7 7.Bb5 Nd8 1/2
C45 Scotch: Blackburne Attack
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Be3 Qf6 6.c3 Nge7 7.Qd2 1/2
C45 Scotch: Gottschall Variation
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Be3 Qf6 6.c3 Nge7 7.Qd2 d5
8.Nb5 Bxe3 9.Qxe3 O-O 10.Nxc7 Rb8 11.Nxd5 Nxd5 12.exd5 Nb4 1/2
C45 Scotch: Romanishin Variation
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Nb3 Bb4+ 1/2
C45 Scotch: Tartakower Variation
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Nf6 5.Nxc6 bxc6 6.Nd2 1/2
C45 Scotch: Ghulam Kassim Variation
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Nxd4 5.Qxd4 d6 6.Bd3 1/2
C45 Scotch: Horwitz Attack
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Qh4 5.Nb5 1/2
C45 Scotch Game
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Qh4 5.Nb5 Bb4+ 6.Bd2 1/2
C45 Scotch: Rosenthal Variation
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Qh4 5.Nb5 Bb4+ 6.Bd2 Qxe4# 7.Be2 Kd8
8.O-O Bxd2 9.Nxd2 Qg6 1/2
C45 Scotch: Berger Variation
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Qh4 5.Nb5 Bb4+ 6.Nd2 Qxe4+ 7.Be2 Qxg2
8.Bf3 Qh3 9.Nxc7+ Kd8 10.Nxa8 Nf6 11.a3 1/2
C45 Scotch: Fraser Attack
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Qh4 5.Nf3 1/2
C46 Three Knights: Schlechter Variation
1.e4 e5 2.Nf3 Nc6 3.Nc3 Bb4 4.Nd5 Nf6 1/2
C46 Three Knights: Winawer Defense: (Gothic Defense)
1.e4 e5 2.Nf3 Nc6 3.Nc3 f5 1/2
C47 Four Knights: Scotch 4...exd4
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 1/2
C47 Four Knights: Schultze-Mueller Gambit: (Halloween Attack) ; *pwo 5/01 revise
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Nxe5 1/2
C48 Four Knights: Ranken Variation
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 a6 5.Bxc6 1/2
C48 Four Knights: Bardeleben Variation
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bc5 5.O-O O-O 6.Nxe5 Nxe5 7.d4 Bd6
8.f4 Nc6 9.e5 Bb4 1/2
C48 Four Knights: Rubinstein Counter-Gambit: 5.Be2
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4 5.Be2 1/2
C48 Four Knights: Rubinstein Counter-Gambit: Maroczy Variation
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4 5.Be2 Nxf3+ 6.Bxf3 Bc5 7.O-O O-O
8.d3 d6 9.Na4 Bb6 1/2
C48 Four Knights: Rubinstein Counter-Gambit: Bogolyubov Variation
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4 5.Nxe5 Qe7 6.f4 1/2
C49 Four Knights Game
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 Bxc3 1/2
C49 Four Knights: Svenonius Variation
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 Bxc3 7.bxc3 d5 1/2
C49 Four Knights: Symmetrical: Tarrasch Variation
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Be6 1/2
C49 Four Knights: Symmetrical: Pillsbury Variation
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Ne7 1/2
C49 Four Knights: Symmetrical: Blake Variation
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Ne7 8.Nh4 c6
9.Bc4 d5 10.Bb3 Qd6 1/2
C49 Four Knights: Alatortsev Variation
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 Qe7 7.Ne2 d5 1/2
C50 Blackburne shilling Gambit
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4 4.Nxe5 Qg5 5.Nxf7 Qxg2 6.Rf1 Qxe4+ 7.Be2 Nf3+
1/2
C50 Giuoco Piano: Jerome Gambit
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 1/2
C50 Giuoco Pianissimo: Dubois Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3 f5 5.Ng5 f4 1/2
C51 Evans Gambit Declined: Showalter Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bb6 5.a4 a6 6.Nc3 1/2
C51 Evans Gambit Declined: Lange Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bb6 5.b5 Na5 6.Nxe5 Nh6 1/2
C51 Evans Gambit Declined: Pavlov Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bb6 5.b5 Na5 6.Nxe5 Nh6 7.d4 d6 8.Bxh6 dxe5
9.Bxg7 Rg8 10.Bxf7+ Kxf7 11.Bxe5 Qg5 12.Nd2 1/2
C51 Evans Gambit Declined: Hirschbach Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bb6 5.b5 Na5 6.Nxe5 Qg5 1/2
C51 Evans Gambit Declined: Vasquez Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bb6 5.b5 Na5 6.Nxe5 Qg5 7.Bxf7+ Ke7 8.Qh5
1/2
C51 Evans Gambit Declined: Hicken Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bb6 5.b5 Na5 6.Nxe5 Qg5 7.Qf3 Qxe5
8.Qxf7+ Kd8 9.Bb2 1/2
C51 Evans Gambit Declined: Cordel Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bb6 5.Bb2 1/2
C51 Evans Gambit
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 1/2
C51 Evans Gambit: Fraser Attack
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Bc5 6.d4 exd4 7.O-O d6 8.cxd4 Bb6
9.Nc3 Bg4 10.Qa4 1/2
C51 Evans Gambit: Fraser-Mortimer Attack
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Bc5 6.d4 exd4 7.O-O d6 8.cxd4 Bb6
9.Nc3 Bg4 10.Qa4 Bd7 11.Qb3 Na5 12.Bxf7+ Kf8 13.Qc2 1/2
C51 Evans Gambit: Goering Attack
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Bc5 6.d4 exd4 7.O-O d6 8.cxd4 Bb6
9.Nc3 Na5 10.Bg5 1/2
C51 Evans Gambit: Steinitz Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Bc5 6.d4 exd4 7.O-O d6 8.cxd4 Bb6
9.Nc3 Na5 10.Bg5 f6 11.Be3 1/2
C51 Evans Gambit: 5...Be7
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Be7 1/2
C51 Evans Gambit: Mayet Defense
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Bf8 1/2
C51 Evans Counter-Gambit
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 d5 1/2
C52 Evans Gambit
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 1/2
C52 Evans Gambit: Leonhardt Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 b5 1/2
C52 Evans Gambit: Sokolsky Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 d6 7.Bg5 1/2
C52 Evans Gambit: Levenfish Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 d6 7.Qb3 Qd7 8.dxe5 dxe5
9.O-O Bb6 10.Ba3 Na5 11.Nxe5 1/2
C52 Evans Gambit: Compromised Defense: Paulsen Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 exd4 7.O-O dxc3
8.Qb3 Qf6 9.e5 Qg6 10.Nxc3 Nge7 11.Ba3 1/2
C52 Evans Gambit: Compromised Defense: Potter Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 exd4 7.O-O dxc3
8.Qb3 Qf6 9.e5 Qg6 10.Nxc3 Nge7 11.Rd1 1/2
C52 Evans Gambit: Sanders-Alapin Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.O-O d6 7.d4 Bd7 1/2
C52 Evans Gambit: Richardson Attack
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.O-O Nf6 7.d4 O-O 8.Nxe5
1/2
C53 Giuoco Piano: LaBourdonnais Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 d6 5.d4 exd4 6.cxd4 Bb6 1/2
C53 Giuoco Piano
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 1/2
C53 Giuoco Piano: Ghulam Kassim Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.e5 Ne4 7.Bd5 Nxf2
8.Kxf2 dxc3+ 9.Kg3 1/2
C53 Giuoco Piano: Centre-holding Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Qe7 5.d4 Bb6 1/2
C53 Giuoco Piano: Mestel Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Qe7 5.d4 Bb6 6.Bg5 1/2
C53 Giuoco Piano: Tarrasch Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Qe7 5.d4 Bb6 6.O-O Nf6 7.a4 a6 8.Re1 d6
9.h3 1/2
C54 Giuoco Piano: Cracow Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Kf1 1/2
C54 Giuoco Piano: Steinitz Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Nc3 Nxe4
8.O-O Bxc3 9.bxc3 d5 10.Ba3 1/2
C54 Giuoco Piano: Therkatz-Herzog Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Nc3 Nxe4
8.O-O Bxc3 9.d5 Bf6 10.Re1 Ne7 11.Rxe4 d6 12.Bg5 Bxg5 13.Nxg5 O-O 14.Nxh7
1/2
C54 Giuoco Piano: Moeller: Bayonet Attack
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Nc3 Nxe4
8.O-O Bxc3 9.d5 Bf6 10.Re1 Ne7 11.Rxe4 d6 12.g4 1/2
C54 Giuoco Piano: Greco Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Nc3 Nxe4
8.O-O Nxc3 1/2
C54 Giuoco Piano: Aitken Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Nc3 Nxe4
8.O-O Nxc3 9.bxc3 Bxc3 10.Ba3 1/2
C54 Giuoco Piano: Bernstein Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Nc3 Nxe4
8.O-O Nxc3 9.bxc3 Bxc3 10.Qb3 d5 1/2
C55 Giuoco Piano: Holzhausen Attack
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.O-O Bc5 5.d4 Bxd4 6.Nxd4 Nxd4 7.Bg5 d6
8.f4 Qe7 9.fxe5 dxe5 10.Nc3 1/2
C55 Giuoco Piano: Rosentreter Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.O-O Bc5 5.d4 Bxd4 6.Nxd4 Nxd4 7.Bg5 h6
8.Bh4 g5 9.f4 1/2
C55 Two Knights Defense
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 1/2
C55 Two Knights: Max Lange Attack: Schlechter Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Bc5 6.e5 d5 7.exf6 dxc4
8.Re1+ Be6 9.fxg7 1/2
C55 Two Knights: Max Lange Attack: Loman Defense
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Bc5 6.e5 d5 7.exf6 dxc4
8.Re1+ Be6 9.Ng5 g6 1/2
C55 Two Knights: Max Lange Attack: Berger Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Bc5 6.e5 d5 7.exf6 dxc4
8.Re1+ Be6 9.Ng5 Qd5 10.Nc3 Qf5 11.g4 Qg6 12.Nce4 Bb6 13.f4 O-O-O 1/2
C55 Two Knights: Max Lange Attack: Rubinstein Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Bc5 6.e5 d5 7.exf6 dxc4
8.Re1+ Be6 9.Ng5 Qd5 10.Nc3 Qf5 11.Nce4 Bf8 1/2
C55 Two Knights: Max Lange Attack: Steinitz Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Bc5 6.e5 Ng4 1/2
C55 Two Knights: Max Lange Attack: Krause Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Bc5 6.e5 Ng4 7.c3 1/2
C56 Two Knights Defense: Canal Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Nxe4 6.Re1 d5 7.Nc3 1/2
C57 Two Knights Defense: Lolli Attack
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Nxd5 6.d4 1/2
C57 Two Knights Defense: Pincus Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Nxd5 6.d4 Bb4+ 1/2
C57 Two Knights Defense: Fegatello Attack: Leonhardt Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Nxd5 6.Nxf7 Kxf7 7.Qf3+ Ke6
8.Nc3 Ncb4 9.Qe4 c6 10.a3 Na6 11.d4 Nac7 1/2
C57 Two Knights Defense: Fegatello Attack: Polerio Defense
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Nxd5 6.Nxf7 Kxf7 7.Qf3+ Ke6
8.Nc3 Nce7 1/2
C58 Two Knights Defense
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 1/2
C58 Two Knights Defense: Bogolyubov Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Qf3
1/2
C58 Two Knights Defense: Blackburne Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6
8.Qf3 cxb5 1/2
C58 Two Knights Defense: Paoli Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6
8.Qf3 Qc7 9.Bd3 1/2
C58 Two Knights Defense: Colman Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6
8.Qf3 Rb8 1/2
C58 Two Knights Defense: Yankovich Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.d3 h6 7.Nf3 e4 8.Qe2 Nxc4
9.dxc4 Bc5 10.Nfd2 1/2
C58 Two Knights Defense: Maroczy Variation
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.d3 h6 7.Nf3 e4 8.Qe2 Nxc4
9.dxc4 Be7 1/2
C59 Two Knights Defense
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6
8.Be2 h6 1/2
C60 Ruy Lopez: Lucena Defense
1.e4 e5 2.Nf3 Nc6 3.Bb5 Be7 1/2
C60 Ruy Lopez: Nuernberg Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 f6 1/2
C60 Ruy Lopez: Brentano Defense
1.e4 e5 2.Nf3 Nc6 3.Bb5 g5 1/2
C60 Ruy Lopez: Pollock Defense
1.e4 e5 2.Nf3 Nc6 3.Bb5 Na5 1/2
C60 Ruy Lopez: Vinogradov Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Qe7 1/2
C64 Ruy Lopez: Classical Defense: Charousek Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.c3 Bb6 1/2
;C64 Ruy Lopez: Classical Defense: Benelux Variation
;1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.c3 Nf6 5.O-O O-O 6.d4 Bb6 1/2
C64 Ruy Lopez: Classical Defense: Boden Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.c3 Qe7 1/2
C65 Ruy Lopez: Berlin Defense: Mortimer Trap
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 Ne7 5.Nxe5 c6 1/2
C67 Ruy Lopez: Berlin Defense: Trifunovic Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7 6.Qe2 d5 1/2
C67 Ruy Lopez: Berlin Defense: Zukertort Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7 6.Qe2 Nd6 7.Bxc6 bxc6
8.dxe5 Nb7 9.c4 1/2
C67 Ruy Lopez: Berlin Defense: Cordel Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7 6.Qe2 Nd6 7.Bxc6 bxc6
8.dxe5 Nf5 1/2
C67 Ruy Lopez: Open Berlin Defense: Showalter Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6 6.Ba4 1/2
C70 Ruy Lopez
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 1/2
C70 Ruy Lopez: Caro Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5 1/2
C70 Ruy Lopez: Alapin's Defense Deferred
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Bb4 1/2
C70 Ruy Lopez: Fianchetto Defense Deferred
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 g6 1/2
C70 Ruy Lopez: Bird's Defense Deferred
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nd4 1/2
C71 Ruy Lopez: Modern Steinitz Defense: Three Knights Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.Nc3 1/2
C78 Ruy Lopez: 5.O-O
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O 1/2
C78 Ruy Lopez: Rabinovich Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 d6 7.Ng5 d5 8.exd5 Nd4
9.Re1 Bc5 10.Rxe5+ Kf8 1/2
C80 Ruy Lopez: Open: 6.d4
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 1/2
C80 Ruy Lopez: Open: 6.d4 b5
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 1/2
C80 Ruy Lopez: Open: 7.Bb3
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 1/2
C80 Ruy Lopez: Open: Berger Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.a4 Nxd4
9.Nxd4 exd4 10.Nc3 1/2
C80 Ruy Lopez: Open: Zukertort Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Ne7
1/2
C80 Ruy Lopez: Open: Richter Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.d5 1/2
C80 Ruy Lopez: Open: Friess Attack
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Nxe5 1/2
C80 Ruy Lopez: Open: Knorre Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.Nc3 1/2
C81 Ruy Lopez: Open: Howell Attack, Adam ; Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6
9.Qe2 Be7 10.c4 1/2
C82 Ruy Lopez: Open: 9.c3
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6
9.c3 1/2
C82 Ruy Lopez: Open: Italian Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6
9.c3 Bc5 1/2
C82 Ruy Lopez: Open: St.Petersburg Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6
9.c3 Bc5 10.Nbd2 1/2
C82 Ruy Lopez: Open: Motzko Attack, Nenarokov ; Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6
9.c3 Bc5 10.Qd3 Ne7 1/2
C83 Ruy Lopez: Open: 9...Be7 10.Re1
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6
9.c3 Be7 10.Re1 1/2
C83 Ruy Lopez: Open: Tarrasch Trap
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6
9.c3 Be7 10.Re1 O-O 11.Nd4 Qd7 12.Nxe6 fxe6 13.Rxe4 1/2
C88 Ruy Lopez: Closed
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 1/2
C88 Ruy Lopez: Closed: Leonhardt Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 Na5
9.Bc2 c5 10.d4 Qc7 11.h3 Nc6 12.d5 Nb8 13.Nbd2 g5 1/2
C88 Ruy Lopez: Noah's Ark Trap
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.d4 Nxd4
9.Nxd4 exd4 10.Qxd4 c5 1/2
C89 Ruy Lopez: Marshall: Main Line 12.d4
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5
9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 c6 12.d4 1/2
C90 Ruy Lopez: Closed: Lutikov Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.Bc2 1/2
C95 Ruy Lopez: Closed: Breyer 10.d4
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.h3 Nb8 10.d4 1/2
C95 Ruy Lopez: Closed: Breyer, Simagin Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.h3 Nb8 10.d4 Nbd7 11.Nh4 1/2
C96 Ruy Lopez: Closed: Rossolimo Defense
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
9.h3 Na5 10.Bc2 c6 11.d4 Qc7 1/2

D00 Blackmar Gambit
1.d4 d5 2.e4 1/2
D00 Blackmar-Diemer Gambit
1.d4 d5 2.Nc3 Nf6 3.e4 1/2
D00 Blackmar-Diemer: Lemberg Counter-Gambit
1.d4 d5 2.Nc3 Nf6 3.e4 e5 1/2
D00 Queen's Pawn: Anti-Veresov
1.d4 d5 2.Nc3 Bg4 1/2
D00/07 Blackmar-Diemer: Huebsch Gambit
1.d4 d5 2.Nc3 Nf6 3.e4 Nxe4 1/2
D06 Queen's Gambit
1.d4 d5 2.c4 1/2
D08 QGD: Albin Counter-Gambit: Janowski Variation
1.d4 d5 2.c4 e5 3.dxe5 d4 4.Nf3 Nc6 5.Nbd2 f6 1/2
D08 QGD: Albin Counter-Gambit: Balogh Variation
1.d4 d5 2.c4 e5 3.dxe5 d4 4.Nf3 Nc6 5.Nbd2 Qe7 1/2
D11 QGD: Slav: 4.Qc2
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.Qc2 1/2
D12 QGD: Slav: Amsterdam Variation
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3 Bf5 5.cxd5 cxd5 6.Nc3 e6 7.Ne5 Nfd7 1/2
D15 QGD: Slav: Suechting Variation
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 Qb6 1/2
D16 QGD: Slav: Soultanbeieff Variation
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 e6 1/2
D20 QGA: Schwartz Defense
1.d4 d5 2.c4 dxc4 3.e4 f5 1/2
D21 QGA: Alekhine Defense: Borisenko-Furman Variation
1.d4 d5 2.c4 dxc4 3.Nf3 a6 4.e4 1/2
D21 QGA: Ericson Variation
1.d4 d5 2.c4 dxc4 3.Nf3 b5 1/2
D25 QGA: Flohr Variation
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 Be6 1/2
D25 QGA: Smyslov Variation
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 g6 1/2
D26 QGA: 4...e6
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 1/2
D30 QGD: Spielmann Variation
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.e3 c6 5.Nbd2 g6 1/2
D30 QGD: Stonewall Variation
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.e3 c6 5.Nbd2 Ne4 6.Bd3 f5 1/2
D31 QGD: Alapin Variation
1.d4 d5 2.c4 e6 3.Nc3 b6 1/2
D31 QGD: Janowski Variation
1.d4 d5 2.c4 e6 3.Nc3 a6 1/2
D31 QGD: Semi-Slav: Junge Variation
1.d4 d5 2.c4 e6 3.Nc3 c6 4.Nf3 dxc4 5.a4 Bb4 6.e3 b5 7.Bd2 Qb6 1/2
D32 QGD: Tarrasch Defense: 4.cd ed
1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 1/2
D32 QGD: Tarrasch Defense: Tarrasch Gambit
1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.dxc5 d4 6.Na4 b5 1/2
D33 QGD: Tarrasch: Schlechter-Rubinstein System ; , Rey Ardid Variation
1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 c4 7.e4 1/2
D33 QGD: Tarrasch: Prague Variation
1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 1/2
D34 QGD: Tarrasch: Prague Variation 7...Be7
1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 1/2
D34 QGD: Tarrasch: Stoltz Variation
1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O
9.Bg5 Be6 10.Rc1 b6 1/2
D40 QGD: Semi-Tarrasch Defense: Pillsbury Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.Bg5 1/2
D40 QGD: Semi-Tarrasch: Levenfish Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.e3 Nc6 6.Bd3 Bd6 7.O-O O-O 8.Qe2 Qe7
9.dxc5 Bxc5 10.e4 1/2
D44 QGD: Semi-Slav: Anti-Meran, Szabo Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 dxc4 6.e4 b5 7.e5 h6 8.Bh4 g5
9.Nxg5 hxg5 10.Bxg5 Nbd7 11.Qf3 1/2
D49 QGD: Semi-Slav: Meran, Sozin Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6
9.e4 c5 10.e5 cxd4 11.Nxb5 Nxe5 1/2
D49 QGD: Semi-Slav: Meran, Sozin Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6
9.e4 c5 10.e5 cxd4 11.Nxb5 Nxe5 12.Nxe5 axb5 13.O-O 1/2
D51 QGD: Rochlin Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.Nf3 c6 6.Rc1 Qa5 7.Bd2 1/2
D55 QGD: Neo-Orthodox Variation: 7.Bxf6
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bxf6 1/2
D56 QGD: Lasker Defense
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 Ne4 1/2
D56 QGD: Lasker Defense: Russian Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 Ne4 8.Bxe7 Qxe7
9.Qc2 Nf6 10.Bd3 dxc4 11.Bxc4 c5 12.O-O Nc6 13.Rfd1 Bd7 1/2
D57 QGD: Lasker Defense: Main Line
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 Ne4 8.Bxe7 Qxe7
9.cxd5 Nxc3 10.bxc3 1/2
D60 QGD: Orthodox Defense: Rauzer Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Qb3 1/2
D64 QGD: Orthodox Defense: Rubinstein Attack, Karlsbad ; Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Qc2 a6
1/2
D64 QGD: Orthodox Defense: Rubinstein Attack, Wolf ; Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Qc2 Ne4
1/2
D66 QGD: Orthodox Defense (Bd3 Line): Fianchetto Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 dxc4
9.Bxc4 b5 1/2
D67 QGD: Orthodox Defense (Bd3 Line): Janowski Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 dxc4
9.Bxc4 Nd5 10.h4 1/2
D68 QGD: Orthodox Defense: Classical 13.Qb1, (Maroczy)
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 dxc4
9.Bxc4 Nd5 10.Bxe7 Qxe7 11.O-O Nxc3 12.Rxc3 e5 13.Qb1 1/2
D80 Gruenfeld: Spike Gambit
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.g4 1/2
D83 Gruenfeld: Gruenfeld Gambit: Capablanca Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 6.Rc1 1/2
D86 Gruenfeld: Exchange: Larsen Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O
8.Ne2 Qd7 9.O-O b6 1/2
D97 Gruenfeld: Russian: Levenfish Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 b6 1/2
D99 Gruenfeld Defense: Smyslov: Yugoslav Variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 Bg4
8.Be3 Nfd7 9.Qb3 c5 1/2

E00 Catalan: Lobron-Morozevich Variation
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Nf3 Bb4+ 5.Bd2 c5 1/2
E01 Catalan: Reopened ; (ext fm 4.Bg2) *pwo
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 c5 5.Nf3 cxd4 6.O-O 1/2
E03 Catalan: Open: Alekhine Variation
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Qa4+ Nbd7 6.Qxc4 a6 7.Qc2 1/2
E10 Doery Defense
1.d4 Nf6 2.c4 e6 3.Nf3 Ne4 1/2
E15 Queen's Indian: 4.g3 Bb7
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 1/2
E15 Queen's Indian: Buerger Variation
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 c5 6.d5 exd5 7.Ng5 1/2
E20 Nimzo-Indian: Mikenas Attack
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qd3 1/2
E21 Nimzo-Indian: Three Knights: Euwe Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 c5 5.d5 Ne4 1/2
E23 Nimzo-Indian: Spielmann: San Remo Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 c5 5.dxc5 Nc6 6.Nf3 Ne4 7.Bd2 Nxc5 1/2
E23 Nimzo-Indian: Spielmann: Stahlberg Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 c5 5.dxc5 Nc6 6.Nf3 Ne4 7.Bd2 Nxc5 8.Qc2 f5
9.g3 1/2
E23 Nimzo-Indian: Spielmann: Karlsbad Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 c5 5.dxc5 Nc6 6.Nf3 Ne4 7.Bd2 Nxd2 1/2
E24 Nimzo-Indian: Saemisch: Botvinnik Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.f3 d5 7.e3 O-O 8.cxd5 Nxd5
1/2
E30 Nimzo-Indian: Leningrad (...b5 Gambit)
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5 h6 5.Bh4 c5 6.d5 b5 1/2
E36 Nimzo-Indian: Classical: Noa Variation 5.a3
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 d5 5.a3 1/2
E50 Nimzo-Indian: 4.e3 O-O, 5.Nf3, without...d5 ; (modf) *pwo
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 1/2
E54 Nimzo-Indian: 4.e3: Gligoric System, Smyslov ; Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 Qe7
1/2
E60 King's Indian: Anti-Gruenfeld
1.d4 Nf6 2.c4 g6 3.d5 1/2
E60 King's Indian: Danube Gambit
1.d4 Nf6 2.c4 g6 3.d5 b5 1/2
E60 Queen's Pawn: Mengarini Attack
1.d4 Nf6 2.c4 g6 3.Qc2 1/2
E61 King's Indian Defense: 3.Nc3
1.d4 Nf6 2.c4 g6 3.Nc3 1/2
E62 King's Indian: Fianchetto Variation
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 1/2
E77 King's Indian: Six Pawns Attack
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 O-O 6.Be2 c5 7.d5 e6 8.dxe6 fxe6
9.g4 Nc6 10.h4 1/2
E78 King's Indian: Four Pawns Attack: (with Be2 & Nf3)
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 O-O 6.Be2 c5 7.Nf3 1/2
;-----ending section 2--------------------------------------------
; this next Line placed last for compatibility w/ some U4 readers
E83 King's Indian: Saemisch: Zaitsev Variation ; *pwo (end section 2)
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 Nc6 7.Nge2 Rb8 1/2
