A00 Polish (Sokolsky) opening
b2b4 
  Tuebingen variation
b2b4 g8h6 
  Outflank variation
b2b4 c7c6 
A00 Benko's opening
g2g3 
A00 Lasker simul special
g2g3 h7h5 
  reversed Alekhine
g2g3 e7e5 g1f3 
A00 Grob's attack
g2g4 
  spike attack
g2g4 d7d5 f1g2 c7c6 g4g5 
  Fritz gambit
g2g4 d7d5 f1g2 c8g4 c2c4 
  Romford counter-gambit
g2g4 d7d5 f1g2 c8g4 c2c4 d5d4 
A00 Clemenz (Mead's, Basman's or de Klerk's) opening
h2h3 
A00 Global opening
h2h3 e7e5 a2a3 
A00 Amar (Paris) opening
g1h3 
A00 Amar gambit
g1h3 d7d5 g2g3 e7e5 f2f4 c8h3 f1h3 e5f4 
A00 Dunst (Sleipner, Heinrichsen) opening
b1c3 
A00 Dunst (Sleipner,Heinrichsen) opening
b1c3 e7e5 
A00 Battambang opening
b1c3 e7e5 a2a3 
A00 Novosibirsk opening
b1c3 c7c5 d2d4 c5d4 d1d4 b8c6 d4h4 
A00 Anderssen's opening
a2a3 
A00 Ware (Meadow Hay) opening
a2a4 
A00 Crab opening
a2a4 e7e5 h2h4 
A00 Saragossa opening
c2c3 
A00 Mieses opening
d2d3 
A00 Mieses opening
d2d3 e7e5 
A00 Valencia opening
d2d3 e7e5 b1d2 
A00 Venezolana opening
d2d3 c7c5 b1c3 b8c6 g2g3 
A00 Van't Kruijs opening
e2e3 
A00 Amsterdam attack
e2e3 e7e5 c2c4 d7d6 b1c3 b8c6 b2b3 g8f6 
A00 Gedult's opening
f2f3 
A00 Hammerschlag (Fried fox/Pork chop opening)
f2f3 e7e5 e1f2 
A00 Anti-Borg (Desprez) opening
h2h4 
A00 Durkin's attack
b1a3 
A01 Nimzovich-Larsen attack
b2b3 
  modern variation
b2b3 e7e5 
  Indian variation
b2b3 g8f6 
  classical variation
b2b3 d7d5 
  English variation
b2b3 c7c5 
  Dutch variation
b2b3 f7f5 
  Polish variation
b2b3 b7b5 
  symmetrical variation
b2b3 b7b6 
A02 Bird's opening
f2f4 
  From gambit
f2f4 e7e5 
  From gambit, Lasker variation
f2f4 e7e5 f4e5 d7d6 e5d6 f8d6 g1f3 g7g5 
  From gambit, Lipke variation
f2f4 e7e5 f4e5 d7d6 e5d6 f8d6 g1f3 g8h6 d2d4 
A02 Bird's opening, Swiss gambit
f2f4 f7f5 e2e4 f5e4 b1c3 g8f6 g2g4 
  Hobbs gambit
f2f4 g7g5 
A03 Bird's opening
f2f4 d7d5 
A03 Mujannah opening
f2f4 d7d5 c2c4 
  Williams gambit
f2f4 d7d5 e2e4 
  Lasker variation
f2f4 d7d5 g1f3 g8f6 e2e3 c7c5 
A04 Reti opening
g1f3 
A04 Reti v Dutch
g1f3 f7f5 
  Pirc-Lisitsin gambit
g1f3 f7f5 e2e4 
  Lisitsin gambit deferred
g1f3 f7f5 d2d3 g8f6 e2e4 
A04 Reti opening
g1f3 d7d6 
  Wade defence
g1f3 d7d6 e2e4 c8g4 
  Herrstroem gambit
g1f3 g7g5 
A05 Reti opening
g1f3 g8f6 
  King's Indian attack, Spassky's variation
g1f3 g8f6 g2g3 b7b5 
  King's Indian attack
g1f3 g8f6 g2g3 g7g6 
  King's Indian attack, Reti-Smyslov variation
g1f3 g8f6 g2g3 g7g6 b2b4 
A06 Reti opening
g1f3 d7d5 
  old Indian attack
g1f3 d7d5 d2d3 
A06 Santasiere's folly
g1f3 d7d5 b2b4 
A06 Tennison (Lemberg, Zukertort) gambit
g1f3 d7d5 e2e4 
  Nimzovich-Larsen attack
g1f3 d7d5 b2b3 
  King's Indian attack (Barcza system)
g1f3 d7d5 g2g3 
  King's Indian attack, Yugoslav variation
g1f3 d7d5 g2g3 g8f6 f1g2 c7c6 e1g1 c8g4 
  King's Indian attack, Keres variation
g1f3 d7d5 g2g3 c8g4 f1g2 b8d7 
  King's Indian attack
g1f3 d7d5 g2g3 g7g6 
  King's Indian attack, Pachman system
g1f3 d7d5 g2g3 g7g6 f1g2 f8g7 e1g1 e7e5 d2d3 g8e7 
  King's Indian attack (with ...c5)
g1f3 d7d5 g2g3 c7c5 
  King's Indian attack
g1f3 d7d5 g2g3 c7c5 f1g2 
  King's Indian attack, French variation
g1f3 d7d5 g2g3 c7c5 f1g2 b8c6 e1g1 e7e6 d2d3 g8f6 b1d2 f8e7 e2e4 e8g8 f1e1 
A09 Reti opening
g1f3 d7d5 c2c4 
  advance variation
g1f3 d7d5 c2c4 d5d4 
A09 Reti accepted
g1f3 d7d5 c2c4 d5c4 
  Keres variation
g1f3 d7d5 c2c4 d5c4 e2e3 c8e6 
A10 English opening
c2c4 
A10 English opening
c2c4 g7g6 
  Adorjan defence
c2c4 g7g6 e2e4 e7e5 
  Jaenisch gambit
c2c4 b7b5 
  Anglo-Dutch defense
c2c4 f7f5 
  Caro-Kann defensive system
c2c4 c7c6 
  Caro-Kann defensive system
c2c4 c7c6 g1f3 d7d5 b2b3 
  Torre defensive system
c2c4 c7c6 g1f3 d7d5 b2b3 g8f6 g2g3 c8g4 
  London defensive system
c2c4 c7c6 g1f3 d7d5 b2b3 g8f6 g2g3 c8f5 
  Caro-Kann defensive system
c2c4 c7c6 g1f3 d7d5 b2b3 g8f6 c1b2 
  Bled variation
c2c4 c7c6 g1f3 d7d5 b2b3 g8f6 c1b2 g7g6 
  New York (London) defensive system
c2c4 c7c6 g1f3 d7d5 b2b3 g8f6 c1b2 c8f5 
  Capablanca's variation
c2c4 c7c6 g1f3 d7d5 b2b3 g8f6 c1b2 c8g4 
  Caro-Kann defensive system, Bogolyubov variation
c2c4 c7c6 g1f3 d7d5 b2b3 c8g4 
A13 English opening
c2c4 e7e6 
  Romanishin gambit
c2c4 e7e6 g1f3 g8f6 g2g3 a7a6 f1g2 b7b5 
  Agincourt variation
c2c4 e7e6 g1f3 d7d5 
  Wimpey system
c2c4 e7e6 g1f3 d7d5 b2b3 g8f6 c1b2 c7c5 e2e3 
  Agincourt variation
c2c4 e7e6 g1f3 d7d5 g2g3 
  Kurajica defence
c2c4 e7e6 g1f3 d7d5 g2g3 c7c6 
  Neo-Catalan
c2c4 e7e6 g1f3 d7d5 g2g3 g8f6 
  Neo-Catalan accepted
c2c4 e7e6 g1f3 d7d5 g2g3 g8f6 f1g2 d5c4 
  Neo-Catalan declined
c2c4 e7e6 g1f3 d7d5 g2g3 g8f6 f1g2 f8e7 e1g1 
  Symmetrical, Keres defence
c2c4 e7e6 g1f3 d7d5 g2g3 g8f6 f1g2 f8e7 e1g1 c7c5 c4d5 f6d5 b1c3 b8c6 
A15 English, 1...Nf6 (Anglo-Indian defense)
c2c4 g8f6 
A15 English orang-utan
c2c4 g8f6 b2b4 
A15 English opening
c2c4 g8f6 g1f3 
A16 English opening
c2c4 g8f6 b1c3 
  Anglo-Gruenfeld defense
c2c4 g8f6 b1c3 d7d5 
  Anglo-Gruenfeld, Smyslov defense
c2c4 g8f6 b1c3 d7d5 c4d5 f6d5 g2g3 g7g6 f1g2 d5c3 
  Anglo-Gruenfeld, Czech defense
c2c4 g8f6 b1c3 d7d5 c4d5 f6d5 g2g3 g7g6 f1g2 d5b6 
  Anglo-Gruenfeld defense
c2c4 g8f6 b1c3 d7d5 c4d5 f6d5 g1f3 
  Anglo-Gruenfeld defense, Korchnoi variation
c2c4 g8f6 b1c3 d7d5 c4d5 f6d5 g1f3 g7g6 g2g3 f8g7 f1g2 e7e5 
A17 English opening
c2c4 g8f6 b1c3 e7e6 
  Queens Indian formation
c2c4 g8f6 b1c3 e7e6 g1f3 b7b6 
  Queens Indian, Romanishin variation
c2c4 g8f6 b1c3 e7e6 g1f3 b7b6 e2e4 c8b7 f1d3 
  Nimzo-English opening
c2c4 g8f6 b1c3 e7e6 g1f3 f8b4 
  Mikenas-Carls variation
c2c4 g8f6 b1c3 e7e6 e2e4 
  Mikenas-Carls, Flohr variation
c2c4 g8f6 b1c3 e7e6 e2e4 d7d5 e4e5 
  Mikenas-Carls, Kevitz variation
c2c4 g8f6 b1c3 e7e6 e2e4 b8c6 
  Mikenas-Carls, Sicilian variation
c2c4 g8f6 b1c3 e7e6 e2e4 c7c5 
A20 English opening
c2c4 e7e5 
A20 English, Nimzovich variation
c2c4 e7e5 g1f3 
A20 English, Nimzovich, Flohr variation
c2c4 e7e5 g1f3 e5e4 
A21 English opening
c2c4 e7e5 b1c3 
A21 English, Troeger defence
c2c4 e7e5 b1c3 d7d6 g2g3 c8e6 f1g2 b8c6 
A21 English, Keres variation
c2c4 e7e5 b1c3 d7d6 g2g3 c7c6 
A21 English opening
c2c4 e7e5 b1c3 d7d6 g1f3 
A21 English, Smyslov defence
c2c4 e7e5 b1c3 d7d6 g1f3 c8g4 
A21 English, Kramnik-Shirov counterattack
c2c4 e7e5 b1c3 f8b4 
A22 English opening
c2c4 e7e5 b1c3 g8f6 
  Bellon gambit
c2c4 e7e5 b1c3 g8f6 g1f3 e5e4 f3g5 b7b5 
  Carls' Bremen system
c2c4 e7e5 b1c3 g8f6 g2g3 
  Bremen, reverse dragon
c2c4 e7e5 b1c3 g8f6 g2g3 d7d5 
  Bremen, Smyslov system
c2c4 e7e5 b1c3 g8f6 g2g3 f8b4 
  Bremen system, Keres variation
c2c4 e7e5 b1c3 g8f6 g2g3 c7c6 
  Bremen system with ...g6
c2c4 e7e5 b1c3 g8f6 g2g3 g7g6 
  Sicilian reversed
c2c4 e7e5 b1c3 b8c6 
  closed system
c2c4 e7e5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 
  closed, Taimanov variation
c2c4 e7e5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 e2e3 d7d6 g1e2 g8h6 
  closed, Hort variation
c2c4 e7e5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 e2e3 d7d6 g1e2 c8e6 
  closed, 5.Rb1
c2c4 e7e5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 a1b1 
  closed, 5.Rb1 Taimanov variation
c2c4 e7e5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 a1b1 g8h6 
  closed system (without ...d6)
c2c4 e7e5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 
  closed system
c2c4 e7e5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 d7d6 
  Botvinnik system
c2c4 e7e5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 d7d6 e2e4 
  three knights system
c2c4 e7e5 b1c3 b8c6 g1f3 
  four knights system
c2c4 e7e5 b1c3 b8c6 g1f3 g8f6 
  Nenarokov variation
c2c4 e7e5 b1c3 b8c6 g1f3 g8f6 d2d4 e5d4 f3d4 f8b4 c1g5 h7h6 g5h4 b4c3 b2c3 c6e5 
  Bradley Beach variation
c2c4 e7e5 b1c3 b8c6 g1f3 g8f6 d2d4 e5e4 
  four knights, Nimzovich variation
c2c4 e7e5 b1c3 b8c6 g1f3 g8f6 e2e4 
  four knights, Marini variation
c2c4 e7e5 b1c3 b8c6 g1f3 g8f6 a2a3 
  four knights, Capablanca variation
c2c4 e7e5 b1c3 b8c6 g1f3 g8f6 d2d3 
  four knights, 4.e3
c2c4 e7e5 b1c3 b8c6 g1f3 g8f6 e2e3 
  four knights, Stean variation
c2c4 e7e5 b1c3 b8c6 g1f3 g8f6 e2e3 f8b4 d1c2 e8g8 c3d5 f8e8 c2f5 
  four knights, Romanishin variation
c2c4 e7e5 b1c3 b8c6 g1f3 g8f6 e2e3 f8b4 d1c2 b4c3 
  four knights, kingside fianchetto
c2c4 e7e5 b1c3 b8c6 g1f3 g8f6 g2g3 
  symmetrical variation
c2c4 c7c5 
  symmetrical, hedgehog system
c2c4 c7c5 g1f3 g8f6 g2g3 b7b6 f1g2 c8b7 e1g1 e7e6 b1c3 f8e7 
  symmetrical, hedgehog, flexible formation
c2c4 c7c5 g1f3 g8f6 g2g3 b7b6 f1g2 c8b7 e1g1 e7e6 b1c3 f8e7 d2d4 c5d4 d1d4 d7d6 f1d1 a7a6 b2b3 b8d7 
  symmetrical, Benoni formation
c2c4 c7c5 g1f3 g8f6 d2d4 
  symmetrical variation
c2c4 c7c5 g1f3 g8f6 d2d4 c5d4 f3d4 e7e6 
  symmetrical variation
c2c4 c7c5 g1f3 g8f6 d2d4 c5d4 f3d4 e7e6 b1c3 b8c6 
  symmetrical, Geller variation
c2c4 c7c5 g1f3 g8f6 d2d4 c5d4 f3d4 e7e6 b1c3 b8c6 g2g3 d8b6 
  symmetrical variation
c2c4 c7c5 b1c3 
  symmetrical, three knights system
c2c4 c7c5 b1c3 g8f6 g1f3 d7d5 c4d5 f6d5 
  symmetrical variation
c2c4 c7c5 b1c3 g8f6 g2g3 
  symmetrical, Rubinstein system
c2c4 c7c5 b1c3 g8f6 g2g3 d7d5 c4d5 f6d5 f1g2 d5c7 
  symmetrical variation
c2c4 c7c5 b1c3 b8c6 
  symmetrical, four knights system
c2c4 c7c5 b1c3 b8c6 g1f3 g8f6 
  symmetrical variation
c2c4 c7c5 b1c3 b8c6 g2g3 
  ultra-symmetrical variation
c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 
  symmetrical, Botvinnik system reversed
c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 e2e3 e7e5 
  symmetrical, Botvinnik system
c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 e2e4 
  symmetrical variation
c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 g1f3 
  symmetrical, Botvinnik system reversed
c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 g1f3 e7e5 
  symmetrical variation
c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 g1f3 g8f6 
  symmetrical, main line with d3
c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 g1f3 g8f6 e1g1 e8g8 d2d3 
  symmetrical, main line with b3
c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 g1f3 g8f6 e1g1 e8g8 b2b3 
  symmetrical, main line with d4
c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 g1f3 g8f6 e1g1 e8g8 d2d4 
A40 Queen's pawn
d2d4 
  Lundin (Kevitz-Mikenas) defence
d2d4 b8c6 
  Charlick (Englund) gambit
d2d4 e7e5 
  Englund gambit
d2d4 e7e5 d4e5 b8c6 g1f3 d8e7 d1d5 f7f6 e5f6 g8f6 
  English defence
d2d4 b7b6 
A40 Polish defence
d2d4 b7b5 
A40 Queen's pawn
d2d4 e7e6 
  Keres defence
d2d4 e7e6 c2c4 b7b6 
  Franco-Indian (Keres) defence
d2d4 e7e6 c2c4 f8b4 
A40 Modern defence
d2d4 g7g6 
A40 Beefeater defence
d2d4 g7g6 c2c4 f8g7 b1c3 c7c5 d4d5 g7c3 b2c3 f7f5 
A41 Queen's Pawn
d2d4 d7d6 
  Tartakower (Wade) variation
d2d4 d7d6 g1f3 c8g4 
A41 Old Indian defence
d2d4 d7d6 c2c4 
A41 Modern defence
d2d4 d7d6 c2c4 g7g6 b1c3 f8g7 
  Rossolimo variation
e2e4 g7g6 d2d4 f8g7 g1f3 d7d6 c2c4 c8g4 
  Averbakh system
d2d4 d7d6 c2c4 g7g6 b1c3 f8g7 e2e4 
A42 Pterodactyl defence
d2d4 d7d6 c2c4 g7g6 b1c3 f8g7 e2e4 c7c5 g1f3 d8a5 
  Averbakh system, Randspringer variation
d2d4 d7d6 c2c4 g7g6 b1c3 f8g7 e2e4 f7f5 
  Averbakh system, Kotov variation
d2d4 d7d6 c2c4 g7g6 b1c3 f8g7 e2e4 b8c6 
A43 Old Benoni defence
d2d4 c7c5 
  Franco-Benoni defence
d2d4 c7c5 d4d5 e7e6 e2e4 
  Mujannah formation
d2d4 c7c5 d4d5 f7f5 
A43 Old Benoni defence
d2d4 c7c5 d4d5 g8f6 
A43 Woozle defence
d2d4 c7c5 d4d5 g8f6 b1c3 d8a5 
A43 Old Benoni defence
d2d4 c7c5 d4d5 g8f6 g1f3 
A43 Hawk (Habichd) defence
d2d4 c7c5 d4d5 g8f6 g1f3 c5c4 
A43 Old Benoni defence
d2d4 c7c5 d4d5 d7d6 
  Schmid's system
d2d4 c7c5 d4d5 d7d6 b1c3 g7g6 
A44 Old Benoni defence
d2d4 c7c5 d4d5 e7e5 
A44 Semi-Benoni (`blockade variation')
d2d4 c7c5 d4d5 e7e5 e2e4 d7d6 
A45 Queen's pawn game
d2d4 g8f6 
  Bronstein gambit
d2d4 g8f6 g2g4 
A45 Canard opening
d2d4 g8f6 f2f4 
A45 Paleface attack
d2d4 g8f6 f2f3 
A45 Blackmar-Diemer gambit
d2d4 g8f6 f2f3 d7d5 e2e4 
A45 Gedult attack
d2d4 g8f6 f2f3 d7d5 g2g4 
A45 Trompovsky attack (Ruth, Opovcensky opening)
d2d4 g8f6 c1g5 
A46 Queen's pawn game
d2d4 g8f6 g1f3 
  Torre attack
d2d4 g8f6 g1f3 e7e6 c1g5 
  Torre attack, Wagner gambit
d2d4 g8f6 g1f3 e7e6 c1g5 c7c5 e2e4 
  Yusupov-Rubinstein system
d2d4 g8f6 g1f3 e7e6 e2e3 
A46 Doery defence
d2d4 g8f6 g1f3 f6e4 
A47 Queen's Indian defence
d2d4 g8f6 g1f3 b7b6 
  Marienbad system
d2d4 g8f6 g1f3 b7b6 g2g3 c8b7 f1g2 c7c5 
  Marienbad system, Berg variation
d2d4 g8f6 g1f3 b7b6 g2g3 c8b7 f1g2 c7c5 c2c4 c5d4 d1d4 
  East Indian defence
d2d4 g8f6 g1f3 g7g6 
  Torre attack
d2d4 g8f6 g1f3 g7g6 c1g5 
  London system
d2d4 g8f6 g1f3 g7g6 c1f4 
  fianchetto without c4
d2d4 g8f6 g1f3 g7g6 g2g3 
A50 Queen's pawn game
d2d4 g8f6 c2c4 
A50 Kevitz-Trajkovich defence
d2d4 g8f6 c2c4 b8c6 
A50 Queen's Indian accelerated
d2d4 g8f6 c2c4 b7b6 
A51 Budapest defence declined
d2d4 g8f6 c2c4 e7e5 
  Fajarowicz variation
d2d4 g8f6 c2c4 e7e5 d4e5 f6e4 
  Fajarowicz, Steiner variation
d2d4 g8f6 c2c4 e7e5 d4e5 f6e4 d1c2 
A52 Budapest defence
d2d4 g8f6 c2c4 e7e5 d4e5 f6g4 
  Adler variation
d2d4 g8f6 c2c4 e7e5 d4e5 f6g4 g1f3 
  Rubinstein variation
d2d4 g8f6 c2c4 e7e5 d4e5 f6g4 c1f4 
  Alekhine variation
d2d4 g8f6 c2c4 e7e5 d4e5 f6g4 e2e4 
  Alekhine, Abonyi variation
d2d4 g8f6 c2c4 e7e5 d4e5 f6g4 e2e4 g4e5 f2f4 e5c6 
  Alekhine variation, Balogh gambit
d2d4 g8f6 c2c4 e7e5 d4e5 f6g4 e2e4 d7d6 
A53 Old Indian defence
d2d4 g8f6 c2c4 d7d6 
  Janowski variation
d2d4 g8f6 c2c4 d7d6 b1c3 c8f5 
  Ukrainian variation
d2d4 g8f6 c2c4 d7d6 b1c3 e7e5 
  Dus-Khotimirsky variation
d2d4 g8f6 c2c4 d7d6 b1c3 e7e5 e2e3 b8d7 f1d3 
  Ukrainian variation, 4.Nf3
d2d4 g8f6 c2c4 d7d6 b1c3 e7e5 g1f3 
  main line
d2d4 g8f6 c2c4 d7d6 b1c3 e7e5 g1f3 b8d7 e2e4 
A56 Benoni defence
d2d4 g8f6 c2c4 c7c5 
A56 Benoni defence, Hromodka system
d2d4 g8f6 c2c4 c7c5 d4d5 d7d6 
A56 Vulture defence
d2d4 g8f6 c2c4 c7c5 d4d5 f6e4 
A56 Czech Benoni defence
d2d4 g8f6 c2c4 c7c5 d4d5 e7e5 
  King's Indian system
d2d4 g8f6 c2c4 c7c5 d4d5 e7e5 b1c3 d7d6 e2e4 g7g6 
A57 Benko gambit
d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 
A57 Benko gambit half accepted
d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 
  Zaitsev system
d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b1c3 
  Nescafe Frappe attack
d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b1c3 a6b5 e2e4 b5b4 c3b5 d7d6 f1c4 
A58 Benko gambit accepted
d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b5a6 
  Nd2 variation
d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b5a6 c8a6 b1c3 d7d6 g1f3 g7g6 f3d2 
  fianchetto variation
d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b5a6 c8a6 b1c3 d7d6 g1f3 g7g6 g2g3 
  7.e4
d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b5a6 c8a6 b1c3 d7d6 e2e4 
  Ne2 variation
d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b5a6 c8a6 b1c3 d7d6 e2e4 a6f1 e1f1 g7g6 g1e2 
A59 Benko gambit
d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b5a6 c8a6 b1c3 d7d6 e2e4 a6f1 e1f1 g7g6 g2g3 
  main line
d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b5a6 c8a6 b1c3 d7d6 e2e4 a6f1 e1f1 g7g6 g2g3 f8g7 f1g2 e8g8 g1f3 
A60 Benoni defence
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 
A61 Benoni defence
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 g1f3 g7g6 
  Uhlmann variation
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 g1f3 g7g6 c1g5 
  Nimzovich (knight's tour) variation
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 g1f3 g7g6 f3d2 
  fianchetto variation
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 g1f3 g7g6 g2g3 
  fianchetto variation
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 g1f3 g7g6 g2g3 f8g7 f1g2 e8g8 
  fianchetto, 9...Nbd7
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 g1f3 g7g6 g2g3 f8g7 f1g2 e8g8 e1g1 b8d7 
  fianchetto, 11...Re8
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 g1f3 g7g6 g2g3 f8g7 f1g2 e8g8 e1g1 b8d7 f3d2 a7a6 a2a4 f8e8 
  6.e4
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 
  pawn storm variation
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 f2f4 
  Mikenas variation
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 f2f4 f8g7 e4e5 
  Taimanov variation
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 f2f4 f8g7 f1b5 
  four pawns attack
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 f2f4 f8g7 g1f3 e8g8 
  four pawns attack, main line
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 f2f4 f8g7 g1f3 e8g8 f1e2 f8e8 
  classical with e4 and Nf3
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 
  classical without 9.O-O
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 f1e2 
  classical, 8.Bg5
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 c1g5 
  classical without 9.O-O
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 f1e2 e8g8 
  classical, 9.O-O
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 f1e2 e8g8 e1g1 
  classical, 9...a6, 10.a4
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 f1e2 e8g8 e1g1 a7a6 a2a4 
  classical with ...a6 and 10...Bg4
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 f1e2 e8g8 e1g1 a7a6 a2a4 c8g4 
  classical, 9...Re8
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 f1e2 e8g8 e1g1 f8e8 
  classical, 9...Re8, 10.Nd2
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 f1e2 e8g8 e1g1 f8e8 f3d2 
  classical with ...Re8 and ...Na6
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 f1e2 e8g8 e1g1 f8e8 f3d2 b8a6 
  classical, 11.f3
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 f1e2 e8g8 e1g1 f8e8 f3d2 b8a6 f2f3 
A80 Dutch
d2d4 f7f5 
A80 Dutch, Spielmann gambit
d2d4 f7f5 b1c3 g8f6 g2g4 
A80 Dutch, Manhattan (Alapin, Ulvestad) variation
d2d4 f7f5 d1d3 
A80 Dutch, Von Pretzel gambit
d2d4 f7f5 d1d3 e7e6 g2g4 
A80 Dutch, Korchnoi attack
d2d4 f7f5 h2h3 
A80 Dutch, Krejcik gambit
d2d4 f7f5 g2g4 
A80 Dutch, 2.Bg5 variation
d2d4 f7f5 c1g5 
A81 Dutch defence
d2d4 f7f5 g2g3 
A81 Dutch defence, Blackburne variation
d2d4 f7f5 g2g3 g8f6 f1g2 e7e6 g1h3 
A81 Dutch defence
d2d4 f7f5 g2g3 g8f6 f1g2 g7g6 
  Leningrad, Basman system
d2d4 f7f5 g2g3 g7g6 f1g2 f8g7 g1f3 c7c6 e1g1 g8h6 
  Leningrad, Karlsbad variation
d2d4 f7f5 g2g3 g7g6 f1g2 f8g7 g1h3 
  Staunton gambit
d2d4 f7f5 e2e4 
  Balogh defence
d2d4 f7f5 e2e4 d7d6 
  Staunton gambit
d2d4 f7f5 e2e4 f5e4 
  Staunton gambit, Tartakower variation
d2d4 f7f5 e2e4 f5e4 b1c3 g8f6 g2g4 
  Staunton gambit, Staunton's line
d2d4 f7f5 e2e4 f5e4 b1c3 g8f6 c1g5 
  Staunton gambit, Alekhine variation
d2d4 f7f5 e2e4 f5e4 b1c3 g8f6 c1g5 g7g6 h2h4 
  Staunton gambit, Lasker variation
d2d4 f7f5 e2e4 f5e4 b1c3 g8f6 c1g5 g7g6 f2f3 
  Staunton gambit, Chigorin variation
d2d4 f7f5 e2e4 f5e4 b1c3 g8f6 c1g5 c7c6 
  Staunton gambit, Nimzovich variation
d2d4 f7f5 e2e4 f5e4 b1c3 g8f6 c1g5 b7b6 
A84 Dutch defence
d2d4 f7f5 c2c4 
  Bladel variation
d2d4 f7f5 c2c4 g7g6 b1c3 g8h6 
A84 Dutch defence
d2d4 f7f5 c2c4 e7e6 
A84 Dutch defence, Rubinstein variation
d2d4 f7f5 c2c4 e7e6 b1c3 
  Staunton gambit deferred
d2d4 f7f5 c2c4 e7e6 e2e4 
A84 Dutch defence
d2d4 f7f5 c2c4 g8f6 
A85 Dutch with c4 & Nc3
d2d4 f7f5 c2c4 g8f6 b1c3 
A86 Dutch with c4 & g3
d2d4 f7f5 c2c4 g8f6 g2g3 
  Hort-Antoshin system
d2d4 f7f5 c2c4 g8f6 g2g3 d7d6 f1g2 c7c6 b1c3 d8c7 
  Leningrad variation
d2d4 f7f5 c2c4 g8f6 g2g3 g7g6 
  Leningrad, main variation
d2d4 f7f5 c2c4 g8f6 g2g3 g7g6 f1g2 f8g7 g1f3 
  Leningrad, main variation with c6
d2d4 f7f5 c2c4 g8f6 g2g3 g7g6 f1g2 f8g7 g1f3 e8g8 e1g1 d7d6 b1c3 c7c6 
  Leningrad, main variation with Nc6
d2d4 f7f5 c2c4 g8f6 g2g3 g7g6 f1g2 f8g7 g1f3 e8g8 e1g1 d7d6 b1c3 b8c6 
A90 Dutch defence
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 
  Dutch-Indian (Nimzo-Dutch) variation
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8b4 
A90 Dutch-Indian, Alekhine variation
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8b4 c1d2 b4e7 
A91 Dutch defence
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 
A92 Dutch defence
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 
A92 Dutch defence, Alekhine variation
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 f6e4 
  stonewall variation
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d5 
  stonewall with Nc3
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d5 b1c3 
  stonewall, Botwinnik variation
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d5 b2b3 
  stonewall with Ba3
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d5 b2b3 c7c6 c1a3 
  stonewall with Nc3
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d5 b1c3 c7c6 
  stonewall: Chekhover variation
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d5 b1c3 c7c6 d1c2 d8e8 c1g5 
  classical variation
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d6 
  Ilyin-Genevsky variation
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d6 b1c3 d8e8 
  Ilyin-Genevsky, Winter variation
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d6 b1c3 d8e8 f1e1 
  Ilyin-Genevsky variation with Qc2
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d6 b1c3 d8e8 d1c2 
  Ilyin-Genevsky variation with b3
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d6 b1c3 d8e8 b2b3 
B00 King's pawn opening
e2e4 
B00 Hippopotamus defence
e2e4 g8h6 d2d4 g7g6 c2c4 f7f6 
B00 Corn stalk defence
e2e4 a7a5 
B00 Lemming defence
e2e4 b8a6 
B00 Fred
e2e4 f7f5 
B00 Barnes defence
e2e4 f7f6 
B00 Fried fox defence
e2e4 f7f6 d2d4 e8f7 
B00 Carr's defence
e2e4 h7h6 
B00 Reversed Grob (Borg/Basman defence/macho Grob)
e2e4 g7g5 
B00 St. George (Baker) defence
e2e4 a7a6 
B00 Owen defence
e2e4 b7b6 
B00 Guatemala defence
e2e4 b7b6 d2d4 c8a6 
  Nimzovich defence
e2e4 b8c6 
  Nimzovich defence, Wheeler gambit
e2e4 b8c6 b2b4 c6b4 c2c3 b4c6 d2d4 
  Nimzovich defence
e2e4 b8c6 g1f3 
  Colorado counter
e2e4 b8c6 g1f3 f7f5 
  Nimzovich defence
e2e4 b8c6 d2d4 
  Nimzovich defence, Marshall gambit
e2e4 b8c6 d2d4 d7d5 e4d5 d8d5 b1c3 
  Nimzovich defence, Bogolyubov variation
e2e4 b8c6 d2d4 d7d5 b1c3 
  Neo-Mongoloid defence
e2e4 b8c6 d2d4 f7f6 
B01 Scandinavian (centre counter) defence
e2e4 d7d5 
B01 Scandinavian defence, Lasker variation
e2e4 d7d5 e4d5 d8d5 b1c3 d5a5 d2d4 g8f6 g1f3 c8g4 h2h3 
B01 Scandinavian defence
e2e4 d7d5 e4d5 d8d5 b1c3 d5a5 d2d4 g8f6 g1f3 c8f5 
B01 Scandinavian defence, Gruenfeld variation
e2e4 d7d5 e4d5 d8d5 b1c3 d5a5 d2d4 g8f6 g1f3 c8f5 f3e5 c7c6 g2g4 
  Anderssen counter-attack
e2e4 d7d5 e4d5 d8d5 b1c3 d5a5 d2d4 e7e5 
  Anderssen counter-attack orthodox attack
e2e4 d7d5 e4d5 d8d5 b1c3 d5a5 d2d4 e7e5 d4e5 f8b4 c1d2 b8c6 g1f3 
  Anderssen counter-attack, Goteborg system
e2e4 d7d5 e4d5 d8d5 b1c3 d5a5 d2d4 e7e5 g1f3 
  Anderssen counter-attack, Collijn variation
e2e4 d7d5 e4d5 d8d5 b1c3 d5a5 d2d4 e7e5 g1f3 c8g4 
B01 Scandinavian, Mieses-Kotrvc gambit
e2e4 d7d5 e4d5 d8d5 b1c3 d5a5 b2b4 
  Pytel-Wade variation
e2e4 d7d5 e4d5 d8d5 b1c3 d5d6 
B01 Scandinavian defence
e2e4 d7d5 e4d5 g8f6 
  Icelandic gambit
e2e4 d7d5 e4d5 g8f6 c2c4 e7e6 
B01 Scandinavian gambit
e2e4 d7d5 e4d5 g8f6 c2c4 c7c6 
B01 Scandinavian defence
e2e4 d7d5 e4d5 g8f6 d2d4 
  Marshall variation
e2e4 d7d5 e4d5 g8f6 d2d4 f6d5 
  Kiel variation
e2e4 d7d5 e4d5 g8f6 d2d4 f6d5 c2c4 d5b4 
  Richter variation
e2e4 d7d5 e4d5 g8f6 d2d4 g7g6 
B02 Alekhine's defence
e2e4 g8f6 
  Scandinavian variation
e2e4 g8f6 b1c3 d7d5 
  Spielmann variation
e2e4 g8f6 b1c3 d7d5 e4e5 f6d7 e5e6 
  Maroczy variation
e2e4 g8f6 d2d3 
  Krejcik variation
e2e4 g8f6 f1c4 
  Mokele Mbembe (Buecker) variation
e2e4 g8f6 e4e5 f6e4 
  Brooklyn defence
e2e4 g8f6 e4e5 f6g8 
B02 Alekhine's defence
e2e4 g8f6 e4e5 f6d5 
  Kmoch variation
e2e4 g8f6 e4e5 f6d5 f1c4 d5b6 c4b3 c7c5 d2d3 
  Saemisch attack
e2e4 g8f6 e4e5 f6d5 b1c3 
  Welling variation
e2e4 g8f6 e4e5 f6d5 b2b3 
B02 Alekhine's defence
e2e4 g8f6 e4e5 f6d5 c2c4 
  Steiner variation
e2e4 g8f6 e4e5 f6d5 c2c4 d5b6 b2b3 
  two pawns' (Lasker's) attack
e2e4 g8f6 e4e5 f6d5 c2c4 d5b6 c4c5 
  two pawns' attack, Mikenas variation
e2e4 g8f6 e4e5 f6d5 c2c4 d5b6 c4c5 b6d5 f1c4 e7e6 b1c3 d7d6 
B03 Alekhine's defence
e2e4 g8f6 e4e5 f6d5 d2d4 
  O'Sullivan gambit
e2e4 g8f6 e4e5 f6d5 d2d4 b7b5 
B03 Alekhine's defence
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 
  Balogh variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 f1c4 
B03 Alekhine's defence
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 
  exchange variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 e5d6 
  exchange, Karpov variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 e5d6 c7d6 g1f3 g7g6 f1e2 f8g7 e1g1 e8g8 h2h3 b8c6 b1c3 c8f5 c1f4 
  four pawns attack
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4 
  four pawns attack, Korchnoi variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4 d6e5 f4e5 c8f5 b1c3 e7e6 g1f3 f8e7 f1e2 e8g8 e1g1 f7f6 
  four pawns attack, 6...Nc6
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4 d6e5 f4e5 b8c6 
  four pawns attack, Ilyin-Genevsky var.
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4 d6e5 f4e5 b8c6 g1f3 c8g4 e5e6 f7e6 c4c5 
  four pawns attack, 7.Be3
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4 d6e5 f4e5 b8c6 c1e3 
  four pawns attack, Tartakower variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4 d6e5 f4e5 b8c6 c1e3 c8f5 b1c3 e7e6 g1f3 d8d7 f1e2 e8c8 e1g1 f8e7 
  four pawns attack, Planinc variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4 g7g5 
  four pawns attack, fianchetto variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4 g7g6 
  four pawns attack, Trifunovic variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4 c8f5 
  modern variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 
  modern, Larsen variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 d6e5 
  modern, Schmid variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 d5b6 
  modern, fianchetto variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 g7g6 
  modern, Keres variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 g7g6 f1c4 d5b6 c4b3 f8g7 a2a4 
  modern variation, 4...Bg4
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 c8g4 
  modern, Flohr variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 c8g4 f1e2 c7c6 
  modern, Panov variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 c8g4 h2h3 
  modern, Alekhine variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 c8g4 c2c4 
  modern, Vitolins attack
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 c8g4 c2c4 d5b6 d4d5 
B06 Robatsch (modern) defence
e2e4 g7g6 
B06 Norwegian defence
e2e4 g7g6 d2d4 g8f6 e4e5 f6h5 g2g4 h5g7 
B06 Robatsch (modern) defence
e2e4 g7g6 d2d4 f8g7 
  three pawns attack
e2e4 g7g6 d2d4 f8g7 f2f4 
B06 Robatsch defence
e2e4 g7g6 d2d4 f8g7 b1c3 
  Gurgenidze variation
e2e4 g7g6 d2d4 f8g7 b1c3 c7c6 f2f4 d7d5 e4e5 h7h5 
B06 Robatsch (modern) defence
e2e4 g7g6 d2d4 f8g7 b1c3 d7d6 
  two knights variation
e2e4 g7g6 d2d4 f8g7 b1c3 d7d6 g1f3 
  two knights, Suttles variation
e2e4 g7g6 d2d4 f8g7 b1c3 d7d6 g1f3 c7c6 
  Pseudo-Austrian attack
e2e4 g7g6 d2d4 f8g7 b1c3 d7d6 f2f4 
B07 Pirc defence
e2e4 d7d6 d2d4 g8f6 b1c3 
  Ufimtsev-Pytel variation
e2e4 d7d6 d2d4 g8f6 b1c3 c7c6 
B07 Pirc defence
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 
  150 attack
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 c1e3 c7c6 d1d2 
  Sveshnikov system
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 g2g3 
  Holmov system
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f1c4 
  Byrne variation
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 c1g5 
B07 Pirc defence
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f1e2 
  Chinese variation
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f1e2 f8g7 g2g4 
  bayonet (Mariotti) attack
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f1e2 f8g7 h2h4 
  Geller's system
e2e4 g7g6 d2d4 f8g7 g1f3 d7d6 c2c3 
  classical (two knights) system
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 g1f3 
  classical (two knights) system
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 g1f3 f8g7 
  classical, h3 system
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 g1f3 f8g7 h2h3 
  classical system, 5.Be2
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 g1f3 f8g7 f1e2 
  Austrian attack
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f2f4 
  Austrian attack
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f2f4 f8g7 g1f3 e8g8 
  Austrian attack, 6.e5
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f2f4 f8g7 g1f3 e8g8 e4e5 
  Austrian attack, 6.Be3
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f2f4 f8g7 g1f3 e8g8 c1e3 
  Austrian attack, 6.Bd3
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f2f4 f8g7 g1f3 e8g8 f1d3 
  Austrian attack, dragon formation
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f2f4 f8g7 g1f3 c7c5 
  Austrian attack, Ljubojevic variation
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f2f4 f8g7 f1c4 
B10 Caro-Kann defence
e2e4 c7c6 
  Hillbilly attack
e2e4 c7c6 f1c4 
  anti-Caro-Kann defence
e2e4 c7c6 c2c4 
  anti-anti-Caro-Kann defence
e2e4 c7c6 c2c4 d7d5 
  closed (Breyer) variation
e2e4 c7c6 d2d3 
B10 Caro-Kann defence
e2e4 c7c6 b1c3 
  Goldman (Spielmann) variation
e2e4 c7c6 b1c3 d7d5 d1f3 
  two knights variation
e2e4 c7c6 b1c3 d7d5 g1f3 
  two knights, 3...Bg4
e2e4 c7c6 b1c3 d7d5 g1f3 c8g4 
B12 Caro-Kann defence
e2e4 c7c6 d2d4 
B12 de Bruycker defence
e2e4 c7c6 d2d4 b8a6 b1c3 a6c7 
B12 Caro-Masi defence
e2e4 c7c6 d2d4 g8f6 
B12 Caro-Kann defence
e2e4 c7c6 d2d4 d7d5 
  Tartakower (fantasy) variation
e2e4 c7c6 d2d4 d7d5 f2f3 
  3.Nd2
e2e4 c7c6 d2d4 d7d5 b1d2 
  Edinburgh variation
e2e4 c7c6 d2d4 d7d5 b1d2 d8b6 
  advance variation
e2e4 c7c6 d2d4 d7d5 e4e5 
  advance, Short variation
e2e4 c7c6 d2d4 d7d5 e4e5 c8f5 c2c3 e7e6 f1e2 
  exchange variation
e2e4 c7c6 d2d4 d7d5 e4d5 
  exchange, Rubinstein variation
e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 f1d3 b8c6 c2c3 g8f6 c1f4 
  Panov-Botvinnik attack
e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 
  Panov-Botvinnik, Gunderam attack
e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 c4c5 
  Panov-Botvinnik attack
e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 b1c3 
  Panov-Botvinnik, Herzog defence
e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 b1c3 b8c6 c1g5 d5c4 d4d5 c6a5 
  Panov-Botvinnik, normal variation
e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 b1c3 b8c6 c1g5 e7e6 
  Panov-Botvinnik, Czerniak variation
e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 b1c3 b8c6 c1g5 d8a5 
  Panov-Botvinnik, Reifir (Spielmann) variation
e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 b1c3 b8c6 c1g5 d8b6 
  Panov-Botvinnik attack, 5...e6
e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 b1c3 e7e6 
  Panov-Botvinnik attack, 5...g6
e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 b1c3 g7g6 
B15 Caro-Kann defence
e2e4 c7c6 d2d4 d7d5 b1c3 
  Gurgenidze counter-attack
e2e4 c7c6 d2d4 d7d5 b1c3 b7b5 
  Gurgenidze system
e2e4 c7c6 d2d4 d7d5 b1c3 g7g6 
  Rasa-Studier gambit
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 f2f3 
B15 Caro-Kann defence
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 
  Alekhine gambit
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 g8f6 f1d3 
  Tartakower (Nimzovich) variation
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 g8f6 e4f6 e7f6 
  Forgacs variation
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 g8f6 e4f6 e7f6 f1c4 
  Bronstein-Larsen variation
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 g8f6 e4f6 g7f6 
  Steinitz variation
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 b8d7 
  classical variation
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 c8f5 
  classical, Flohr variation
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 c8f5 e4g3 f5g6 g1h3 
  classical, Maroczy attack
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 c8f5 e4g3 f5g6 f2f4 
  classical, 6.h4
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 c8f5 e4g3 f5g6 h2h4 
  classical, 7...Nd7
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 c8f5 e4g3 f5g6 h2h4 h7h6 g1f3 b8d7 
  classical, Spassky variation
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 c8f5 e4g3 f5g6 h2h4 h7h6 g1f3 b8d7 h4h5 
B20 Sicilian defence
e2e4 c7c5 
  Gloria variation
e2e4 c7c5 c2c4 d7d6 b1c3 b8c6 g2g3 h7h5 
  Steinitz variation
e2e4 c7c5 g2g3 
  wing gambit
e2e4 c7c5 b2b4 
  wing gambit, Santasiere variation
e2e4 c7c5 b2b4 c5b4 c2c4 
  wing gambit, Marshall variation
e2e4 c7c5 b2b4 c5b4 a2a3 
  wing gambit, Marienbad variation
e2e4 c7c5 b2b4 c5b4 a2a3 d7d5 e4d5 d8d5 c1b2 
  wing gambit, Carlsbad variation
e2e4 c7c5 b2b4 c5b4 a2a3 b4a3 
  Keres variation (2.Ne2)
e2e4 c7c5 g1e2 
  Grand Prix attack
e2e4 c7c5 f2f4 
  Smith-Morra gambit
e2e4 c7c5 d2d4 
  Andreaschek gambit
e2e4 c7c5 d2d4 c5d4 g1f3 e7e5 c2c3 
  Smith-Morra gambit
e2e4 c7c5 d2d4 c5d4 c2c3 
  Smith-Morra gambit, Chicago defence
e2e4 c7c5 d2d4 c5d4 c2c3 d4c3 b1c3 b8c6 g1f3 d7d6 f1c4 e7e6 e1g1 a7a6 d1e2 b7b5 c4b3 a8a7 
  Alapin's variation (2.c3)
e2e4 c7c5 c2c3 
  2.c3, Heidenfeld variation
e2e4 c7c5 c2c3 g8f6 e4e5 f6d5 g1f3 b8c6 b1a3 
  closed
e2e4 c7c5 b1c3 
  closed, Korchnoi variation
e2e4 c7c5 b1c3 e7e6 g2g3 d7d5 
  closed, 2...Nc6
e2e4 c7c5 b1c3 b8c6 
  chameleon variation
e2e4 c7c5 b1c3 b8c6 g1e2 
  Grand Prix attack
e2e4 c7c5 b1c3 b8c6 f2f4 
  Grand Prix attack, Schofman variation
e2e4 c7c5 b1c3 b8c6 f2f4 g7g6 g1f3 f8g7 f1c4 e7e6 f4f5 
  closed
e2e4 c7c5 b1c3 b8c6 g2g3 
  closed, Smyslov variation
e2e4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 e7e6 c1e3 c6d4 c3e2 
  closed
e2e4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 d7d6 
  closed, 6.Ne2 e5 (Botvinnik)
e2e4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 d7d6 g1e2 e7e5 
  closed, 6.f4
e2e4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 d7d6 f2f4 
  closed, 6.f4 e5 (Botvinnik)
e2e4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 d7d6 f2f4 e7e5 
  closed, 6.Be3
e2e4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 d7d6 c1e3 
B27 Sicilian defence
e2e4 c7c5 g1f3 
  Stiletto (Althouse) variation
e2e4 c7c5 g1f3 d8a5 
  Quinteros variation
e2e4 c7c5 g1f3 d8c7 
  Katalimov variation
e2e4 c7c5 g1f3 b7b6 
  Hungarian variation
e2e4 c7c5 g1f3 g7g6 
  Acton extension
e2e4 c7c5 g1f3 g7g6 c2c4 f8h6 
  O'Kelly variation
e2e4 c7c5 g1f3 a7a6 
  Nimzovich-Rubinstein variation
e2e4 c7c5 g1f3 g8f6 
  Nimzovich-Rubinstein; Rubinstein counter-gambit
e2e4 c7c5 g1f3 g8f6 e4e5 f6d5 b1c3 e7e6 c3d5 e6d5 d2d4 b8c6 
B30 Sicilian defence
e2e4 c7c5 g1f3 b8c6 
  Nimzovich-Rossolimo attack (without ...d6)
e2e4 c7c5 g1f3 b8c6 f1b5 
  Nimzovich-Rossolimo attack (with ...g6, without ...d6)
e2e4 c7c5 g1f3 b8c6 f1b5 g7g6 
  Nimzovich-Rossolimo attack, Gurgenidze variation
e2e4 c7c5 g1f3 b8c6 f1b5 g7g6 e1g1 f8g7 f1e1 e7e5 b2b4 
B32 Sicilian defence
e2e4 c7c5 g1f3 b8c6 d2d4 
  Flohr variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 d8c7 
  Nimzovich variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 d7d5 
  Labourdonnais-Loewenthal variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 e7e5 
  Labourdonnais-Loewenthal (Kalashnikov) variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 e7e5 d4b5 d7d6 
B33 Sicilian defence
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 
  Pelikan (Lasker/Sveshnikov) variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e5 
  Pelikan, Bird variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e5 d4b5 d7d6 c1g5 a7a6 b5a3 c8e6 
  Pelikan, Chelyabinsk variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e5 d4b5 d7d6 c1g5 a7a6 b5a3 b7b5 
  Sveshnikov variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e5 d4b5 d7d6 c1g5 a7a6 b5a3 b7b5 g5f6 g7f6 c3d5 f6f5 
  accelerated fianchetto, exchange variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 d4c6 
  accelerated fianchetto, modern variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 b1c3 
  accelerated fianchetto, modern variation with Bc4
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 b1c3 f8g7 c1e3 g8f6 f1c4 
  accelerated fianchetto, Maroczy bind
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 c2c4 
  accelerated fianchetto, Gurgenidze variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 c2c4 g8f6 b1c3 c6d4 d1d4 d7d6 
  accelerated fianchetto, Maroczy bind, 5...Bg7
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 c2c4 f8g7 
  accelerated fianchetto, Simagin variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 c2c4 f8g7 d4c2 d7d6 f1e2 g8h6 
  accelerated fianchetto, Maroczy bind, 6.Be3
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 c2c4 f8g7 c1e3 
  accelerated fianchetto, Breyer variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 c2c4 f8g7 c1e3 g8f6 b1c3 f6g4 
B40 Sicilian defence
e2e4 c7c5 g1f3 e7e6 
  Marshall variation
e2e4 c7c5 g1f3 e7e6 d2d4 d7d5 
B40 Sicilian defence
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 
  Anderssen variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 g8f6 
  Pin variation (Sicilian counter-attack)
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 g8f6 b1c3 f8b4 
  Pin, Jaffe variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 g8f6 b1c3 f8b4 f1d3 e6e5 
  Pin, Koch variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 g8f6 b1c3 f8b4 e4e5 
  Kan variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 
  Kan, Maroczy bind (Reti variation)
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 c2c4 
  Kan, Maroczy bind - Bronstein variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 c2c4 g8f6 b1c3 f8b4 f1d3 b8c6 d3c2 
  Kan, 5.Bd3
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 f1d3 
  Kan, Gipslis variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 f1d3 g8f6 e1g1 d7d6 c2c4 g7g6 
  Kan, Polugaievsky variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 f1d3 f8c5 
  Kan, Swiss cheese variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 f1d3 g7g6 
  Kan, 5.Nc3
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 b1c3 
B44 Sicilian defence
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 
B44 Sicilian, Szen (`anti-Taimanov') variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 d4b5 
B44 Sicilian, Szen, hedgehog variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 d4b5 d7d6 c2c4 g8f6 b1c3 a7a6 b5a3 f8e7 f1e2 e8g8 e1g1 b7b6 
B44 Sicilian, Szen variation, Dely-Kasparov gambit
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 d4b5 d7d6 c2c4 g8f6 b1c3 a7a6 b5a3 d6d5 
  Taimanov variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 b1c3 
  Taimanov, American attack
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 b1c3 g8f6 d4b5 f8b4 b5d6 
  Taimanov variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 b1c3 a7a6 
  Taimanov (Bastrikov) variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 b1c3 d8c7 
  Taimanov variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 b1c3 d8c7 c1e3 
  Taimanov variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 b1c3 d8c7 c1e3 a7a6 f1e2 
B50 Sicilian
e2e4 c7c5 g1f3 d7d6 
  wing gambit deferred
e2e4 c7c5 g1f3 d7d6 b2b4 
  Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack
e2e4 c7c5 g1f3 d7d6 f1b5 
  Canal-Sokolsky attack, 3...Bd7
e2e4 c7c5 g1f3 d7d6 f1b5 c8d7 
  Canal-Sokolsky attack, Bronstein gambit
e2e4 c7c5 g1f3 d7d6 f1b5 c8d7 b5d7 d8d7 e1g1 b8c6 c2c3 g8f6 d2d4 
  Canal-Sokolsky attack, Sokolsky variation
e2e4 c7c5 g1f3 d7d6 f1b5 c8d7 b5d7 d8d7 c2c4 
B53 Sicilian, Chekhover variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 d1d4 
  Chekhover, Zaitsev variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 d1d4 b8c6 f1b5 d8d7 
B54 Sicilian
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 
  Prins (Moscow) variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 f2f3 
  Prins variation, Venice attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 f2f3 e7e5 f1b5 
B56 Sicilian
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 
  Venice attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e5 f1b5 
B56 Sicilian
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 
  Sozin, not Scheveningen
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 f1c4 
  Magnus Smith trap
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 f1c4 g7g6 d4c6 b7c6 e4e5 
  Sozin, Benko variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 f1c4 d8b6 
  classical
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f1e2 
  Boleslavsky variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f1e2 e7e5 
  Boleslavsky, Louma variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f1e2 e7e5 d4c6 
  Boleslavsky variation, 7.Nb3
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f1e2 e7e5 d4b3 
  Richter-Rauzer
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 
  Richter-Rauzer, Bondarevsky variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 g7g6 
  Richter-Rauzer, Larsen variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 c8d7 
  Richter-Rauzer, Larsen variation, 7.Qd2
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 c8d7 d1d2 
  Richter-Rauzer, 6...e6
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 
  Richter-Rauzer, Podvebrady variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d4b3 
  Richter-Rauzer, Margate (Alekhine) variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 f1b5 
  Richter-Rauzer, Richter attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d4c6 
  Richter-Rauzer, Keres variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d3 
  Richter-Rauzer, Rauzer attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 
  Richter-Rauzer, Rauzer attack, 7...Be7
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 f8e7 
  Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9.f4
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 f8e7 e1c1 e8g8 f2f4 
  Richter-Rauzer, Rauzer attack, Geller variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 f8e7 e1c1 e8g8 f2f4 e6e5 
  Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9...Nxd4
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 f8e7 e1c1 e8g8 f2f4 c6d4 
  Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9...Nxd4
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 f8e7 e1c1 e8g8 f2f4 c6d4 d2d4 
  Richter-Rauzer, Rauzer attack, 7...a6
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 a7a6 
  Richter-Rauzer, Rauzer attack, 7...a6 defence, 8...Bd7
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 a7a6 e1c1 c8d7 
  Richter-Rauzer, Rauzer attack, 7...a6 defence, 9...Be7
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 a7a6 e1c1 c8d7 f2f4 f8e7 
  Richter-Rauzer, Rauzer attack, 7...a6 defence, 11.Bxf6
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 a7a6 e1c1 c8d7 f2f4 f8e7 d4f3 b7b5 g5f6 
  dragon variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 
  dragon, Levenfish variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 f2f4 
  dragon, Levenfish; Flohr variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 f2f4 b8d7 
  dragon, 6.Be3
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 
  dragon, classical attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 
  dragon, classical, Amsterdam variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6 d1d2 
  dragon, classical, Grigoriev variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6 d1d2 e8g8 e1c1 
  dragon, classical, Nottingham variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6 d4b3 
  dragon, classical, 8.O-O
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6 e1g1 
  dragon, classical, Zollner gambit
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6 e1g1 e8g8 f2f4 d8b6 e4e5 
  dragon, classical, Richter variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6 e1g1 e8g8 d1d2 
  dragon, classical, 9.Nb3
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6 e1g1 e8g8 d4b3 
  dragon, classical, Stockholm attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6 e1g1 e8g8 d4b3 c8e6 f2f4 c6a5 f4f5 e6c4 b3a5 c4e2 d1e2 d8a5 g2g4 
  dragon, classical, Spielmann variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6 e1g1 e8g8 d4b3 c8e6 f2f4 c6a5 f4f5 e6c4 e2d3 
  dragon, classical, Bernard defence
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6 e1g1 e8g8 d4b3 c8e6 f2f4 c6a5 f4f5 e6c4 e2d3 c4d3 c2d3 d6d5 
  dragon, classical, Reti-Tartakower variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6 e1g1 e8g8 d4b3 c8e6 f2f4 d8c8 
  dragon, classical, Alekhine variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6 e1g1 e8g8 d4b3 a7a5 
  dragon, Yugoslav attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 
  dragon, Yugoslav attack, 7...O-O
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 e8g8 
  dragon, Yugoslav attack, Rauser variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 e8g8 d1d2 b8c6 e1c1 
  dragon, Yugoslav attack, 9.Bc4
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 e8g8 d1d2 b8c6 f1c4 
  dragon, Yugoslav attack, Byrne variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 e8g8 d1d2 b8c6 f1c4 a7a5 
  dragon, Yugoslav attack, 9...Bd7
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 e8g8 d1d2 b8c6 f1c4 c8d7 
  dragon, Yugoslav attack, 10.O-O-O
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 e8g8 d1d2 b8c6 f1c4 c8d7 e1c1 
  dragon, Yugoslav attack, 12.h4
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 e8g8 d1d2 b8c6 f1c4 c8d7 e1c1 d8a5 c4b3 f8c8 h2h4 
  Scheveningen variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 
  Scheveningen, English variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 c1e3 a7a6 d1d2 
  Scheveningen, Vitolins variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1b5 
  Scheveningen, fianchetto variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 g2g3 
  Scheveningen, Keres attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 g2g4 
  Scheveningen, 6.f4
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f2f4 
  Scheveningen, Tal variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f2f4 b8c6 c1e3 f8e7 d1f3 
  Scheveningen, 6.Be2
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1e2 
  modern Scheveningen
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1e2 b8c6 
  modern Scheveningen, main line
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1e2 b8c6 e1g1 f8e7 c1e3 e8g8 f2f4 
  modern Scheveningen, main line with Nb3
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1e2 b8c6 e1g1 f8e7 c1e3 e8g8 f2f4 c8d7 d4b3 
  Scheveningen (Paulsen), classical variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1e2 a7a6 
  Scheveningen, classical, Nd7 system
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1e2 a7a6 e1g1 b8d7 
  Scheveningen (Paulsen), classical variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1e2 a7a6 e1g1 d8c7 
  Scheveningen, classical variation with ...Qc7 and ...Nc6
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1e2 a7a6 e1g1 d8c7 f2f4 b8c6 
  Scheveningen, classical, Maroczy system
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1e2 a7a6 e1g1 d8c7 f2f4 b8c6 g1h1 f8e7 a2a4 
  Scheveningen, classical
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1e2 a7a6 e1g1 d8c7 f2f4 b8c6 c1e3 
  Scheveningen, classical main line
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1e2 a7a6 e1g1 d8c7 f2f4 b8c6 c1e3 f8e7 d1e1 e8g8 
  Sozin attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1c4 
  Sozin with ...a6 and ...b5
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1c4 a7a6 c4b3 b7b5 
  Sozin, Leonhardt variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1c4 b8c6 
  Sozin, Fischer variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1c4 b8c6 c4b3 f8e7 c1e3 e8g8 f2f4 
  Sozin, 7.Be3
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1c4 b8c6 c1e3 
  Velimirovic attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1c4 b8c6 c1e3 f8e7 d1e2 
  Najdorf
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 
  Najdorf, Adams attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 h2h3 
  Najdorf, Lipnitzky attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 f1c4 
  Najdorf, Byrne (English) attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1e3 
  Najdorf, Zagreb (fianchetto) variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 g2g3 
  Najdorf, Opovcensky variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 f1e2 
  Najdorf, 6.f4
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 f2f4 
  Najdorf, 6.Bg5
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 
  Najdorf, Ivkov variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 b8d7 f1c4 d8a5 d1d2 e7e6 e1c1 b7b5 c4b3 c8b7 h1e1 d7c5 e4e5 
  Najdorf, 6...e6
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 
  Najdorf, 7.f4
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 
  Najdorf, Polugayevsky variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 b7b5 
  Najdorf, Polugayevsky, Simagin variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 b7b5 e4e5 d6e5 f4e5 d8c7 d1e2 
  Najdorf, 7...Qb6
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 d8b6 
  Najdorf, Poisoned pawn variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 d8b6 d1d2 b6b2 a1b1 b2a3 
  Najdorf, 7...Be7
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 f8e7 
  Najdorf, Browne variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 f8e7 d1f3 h7h6 g5h4 d8c7 
  Najdorf, Goteborg (Argentine) variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 f8e7 d1f3 h7h6 g5h4 g7g5 
  Najdorf variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 f8e7 d1f3 d8c7 
  Najdorf, 7...Be7 main line
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 f8e7 d1f3 d8c7 e1c1 b8d7 
C00 French defence
e2e4 e7e6 
C00 French defence, Steiner variation
e2e4 e7e6 c2c4 
  Reti (Spielmann) variation
e2e4 e7e6 b2b3 
  Steinitz attack
e2e4 e7e6 e4e5 
  Labourdonnais variation
e2e4 e7e6 f2f4 
C00 French defence
e2e4 e7e6 g1f3 
  Wing gambit
e2e4 e7e6 g1f3 d7d5 e4e5 c7c5 b2b4 
C00 French defence
e2e4 e7e6 b1c3 
  Pelikan variation
e2e4 e7e6 b1c3 d7d5 f2f4 
  Two knights variation
e2e4 e7e6 b1c3 d7d5 g1f3 
  Chigorin variation
e2e4 e7e6 d1e2 
  King's Indian attack
e2e4 e7e6 d2d3 
  Reversed Philidor formation
e2e4 e7e6 d2d3 d7d5 b1d2 g8f6 g1f3 b8c6 f1e2 
C00 French defence
e2e4 e7e6 d2d4 
C00 Lengfellner system
e2e4 e7e6 d2d4 d7d6 
C00 St. George defence
e2e4 e7e6 d2d4 a7a6 
C00 French defence
e2e4 e7e6 d2d4 d7d5 
  Schlechter variation
e2e4 e7e6 d2d4 d7d5 f1d3 
  Alapin variation
e2e4 e7e6 d2d4 d7d5 c1e3 
  exchange variation
e2e4 e7e6 d2d4 d7d5 e4d5 
  exchange, Svenonius variation
e2e4 e7e6 d2d4 d7d5 e4d5 e6d5 b1c3 g8f6 c1g5 
  exchange, Bogolyubov variation
e2e4 e7e6 d2d4 d7d5 e4d5 e6d5 b1c3 g8f6 c1g5 b8c6 
  advance variation
e2e4 e7e6 d2d4 d7d5 e4e5 
  advance, Steinitz variation
e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 d4c5 
  advance, Nimzovich variation
e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 d1g4 
  advance, Nimzovich system
e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 g1f3 
  advance variation
e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 c2c3 
  advance, Wade variation
e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 c2c3 d8b6 g1f3 c8d7 
  advance variation
e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 c2c3 b8c6 
  advance, Paulsen attack
e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 c2c3 b8c6 g1f3 
  advance, Milner-Barry gambit
e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 c2c3 b8c6 g1f3 d8b6 f1d3 
  advance, Euwe variation
e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 c2c3 b8c6 g1f3 c8d7 
  Tarrasch
e2e4 e7e6 d2d4 d7d5 b1d2 
  Tarrasch, Haberditz variation
e2e4 e7e6 d2d4 d7d5 b1d2 f7f5 
  Tarrasch, Guimard variation
e2e4 e7e6 d2d4 d7d5 b1d2 b8c6 
  Tarrasch, Guimard main line
e2e4 e7e6 d2d4 d7d5 b1d2 b8c6 g1f3 g8f6 
  Tarrasch, closed variation
e2e4 e7e6 d2d4 d7d5 b1d2 g8f6 
  Tarrasch, Botvinnik variation
e2e4 e7e6 d2d4 d7d5 b1d2 g8f6 e4e5 f6d7 f1d3 c7c5 c2c3 b7b6 
  Tarrasch, closed variation
e2e4 e7e6 d2d4 d7d5 b1d2 g8f6 e4e5 f6d7 f1d3 c7c5 c2c3 b8c6 
  Tarrasch, closed variation, main line
e2e4 e7e6 d2d4 d7d5 b1d2 g8f6 e4e5 f6d7 f1d3 c7c5 c2c3 b8c6 g1e2 c5d4 c3d4 
  Tarrasch, Leningrad variation
e2e4 e7e6 d2d4 d7d5 b1d2 g8f6 e4e5 f6d7 f1d3 c7c5 c2c3 b8c6 g1e2 c5d4 c3d4 d7b6 
  Tarrasch, open variation
e2e4 e7e6 d2d4 d7d5 b1d2 c7c5 
  Tarrasch, Eliskases variation
e2e4 e7e6 d2d4 d7d5 b1d2 c7c5 e4d5 d8d5 g1f3 c5d4 f1c4 d5d8 
  Tarrasch, open, 4.ed ed
e2e4 e7e6 d2d4 d7d5 b1d2 c7c5 e4d5 e6d5 
  Tarrasch, open variation, main line
e2e4 e7e6 d2d4 d7d5 b1d2 c7c5 e4d5 e6d5 g1f3 b8c6 
  Paulsen variation
e2e4 e7e6 d2d4 d7d5 b1c3 
  Marshall variation
e2e4 e7e6 d2d4 d7d5 b1c3 c7c5 
  Rubinstein variation
e2e4 e7e6 d2d4 d7d5 b1c3 d5e4 
  Fort Knox variation
e2e4 e7e6 d2d4 d7d5 b1c3 d5e4 c3e4 c8d7 g1f3 d7c6 
  Rubinstein variation
e2e4 e7e6 d2d4 d7d5 b1c3 d5e4 c3e4 b8d7 
  Rubinstein, Capablanca line
e2e4 e7e6 d2d4 d7d5 b1c3 d5e4 c3e4 b8d7 g1f3 g8f6 e4f6 d7f6 f3e5 
  Frere (Becker) variation
e2e4 e7e6 d2d4 d7d5 b1c3 d5e4 c3e4 d8d5 
C11 French defence
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 
  Swiss variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 f1d3 
  Henneberger variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1e3 
  Steinitz variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 e4e5 
  Steinitz, Bradford attack
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 e4e5 f6d7 f2f4 c7c5 d4c5 f8c5 d1g4 
  Steinitz variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 e4e5 f6d7 f2f4 c7c5 d4c5 b8c6 
  Steinitz, Brodsky-Jones variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 e4e5 f6d7 f2f4 c7c5 d4c5 b8c6 a2a3 f8c5 d1g4 e8g8 g1f3 f7f6 
  Steinitz variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 e4e5 f6d7 f2f4 c7c5 g1f3 
  Steinitz, Boleslavsky variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 e4e5 f6d7 f2f4 c7c5 g1f3 b8c6 c1e3 
  Steinitz, Gledhill attack
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 e4e5 f6d7 d1g4 
  Burn variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 d5e4 
  MacCutcheon variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 
  MacCutcheon, Bogolyubov variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4d5 d8d5 g5f6 g7f6 d1d2 d5a5 
  MacCutcheon, advance variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 
  MacCutcheon, Chigorin variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 e5f6 
  MacCutcheon, Grigoriev variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 e5f6 h6g5 f6g7 h8g8 h2h4 g5h4 d1g4 
  MacCutcheon, Bernstein variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 g5h4 
  MacCutcheon, Janowski variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 g5e3 
  MacCutcheon, Dr. Olland (Dutch) variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 g5c1 
  MacCutcheon, Tartakower variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 g5d2 f6d7 
  MacCutcheon, Lasker variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 g5d2 b4c3 
  MacCutcheon, Duras variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 g5d2 b4c3 b2c3 f6e4 d1g4 e8f8 d2c1 
  MacCutcheon, Lasker variation, 8...g6
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 g5d2 b4c3 b2c3 f6e4 d1g4 g7g6 
  classical
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 
  classical, Anderssen variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 g5f6 
  classical, Anderssen-Richter variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 g5f6 e7f6 e4e5 f6e7 d1g4 
  classical, Vistaneckis (Nimzovich) variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6g8 
  classical, Frankfurt variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6g8 g5e3 b7b6 
  classical, Tartakower variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6e4 
  Albin-Alekhine-Chatard attack
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 h2h4 
  Albin-Alekhine-Chatard attack, Maroczy variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 h2h4 a7a6 
  Albin-Alekhine-Chatard attack, Breyer variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 h2h4 c7c5 
  Albin-Alekhine-Chatard attack, Teichmann variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 h2h4 f7f6 
  Albin-Alekhine-Chatard attack, Spielmann variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 h2h4 e8g8 
  classical variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 g5e7 d8e7 
  classical, Tarrasch variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 g5e7 d8e7 f1d3 
  classical, Rubinstein variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 g5e7 d8e7 d1d2 
  classical, Alapin variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 g5e7 d8e7 c3b5 
  classical, Pollock variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 g5e7 d8e7 d1g4 
  classical, Steinitz variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 g5e7 d8e7 f2f4 
  classical, Stahlberg variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 g5e7 d8e7 f2f4 e8g8 g1f3 c7c5 d1d2 b8c6 e1c1 c5c4 
  Winawer (Nimzovich) variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 
  Winawer, Kondratiyev variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 f1d3 c7c5 e4d5 d8d5 c1d2 
  Winawer, fingerslip variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 c1d2 
  Winawer, Alekhine (Maroczy) gambit
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 g1e2 
  Winawer, Alekhine gambit, Alatortsev variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 g1e2 d5e4 a2a3 b4e7 c3e4 g8f6 e2g3 e8g8 f1e2 b8c6 
  Winawer, Alekhine gambit
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 g1e2 d5e4 a2a3 b4c3 
  Winawer, Alekhine gambit, Kan variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 g1e2 d5e4 a2a3 b4c3 e2c3 b8c6 
  Winawer, advance variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 
  Winawer, Petrosian variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 d8d7 
  Winawer, advance variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 
  Winawer, advance, Bogolyubov variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 c1d2 
  Winawer, advance, Russian variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 d1g4 
  Winawer, advance, 5.a3
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 
  Winawer, advance, Rauzer variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 c5d4 a3b4 d4c3 g1f3 
  Winawer, advance variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4c3 b2c3 
  Winawer, classical variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4c3 b2c3 d8c7 
  Winawer, advance, 6...Ne7
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4c3 b2c3 g8e7 
  Winawer, advance, Smyslov variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4c3 b2c3 g8e7 a3a4 
  Winawer, advance, positional main line
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4c3 b2c3 g8e7 g1f3 
  Winawer, advance, poisoned pawn variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4c3 b2c3 g8e7 d1g4 
  Winawer, advance, poisoned pawn, Euwe-Gligoric variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4c3 b2c3 g8e7 d1g4 d8c7 g4g7 h8g8 g7h7 c5d4 e1d1 
  Winawer, advance, poisoned pawn, Konstantinopolsky variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4c3 b2c3 g8e7 d1g4 d8c7 g4g7 h8g8 g7h7 c5d4 g1e2 
C20 King's pawn game
e2e4 e7e5 
  Indian opening
e2e4 e7e5 d2d3 
  Mengarini's opening
e2e4 e7e5 a2a3 
  King's head opening
e2e4 e7e5 f2f3 
  Patzer opening
e2e4 e7e5 d1h5 
  Napoleon's opening
e2e4 e7e5 d1f3 
  Lopez opening
e2e4 e7e5 c2c3 
C20 Alapin's opening
e2e4 e7e5 g1e2 
C21 Centre game
e2e4 e7e5 d2d4 e5d4 
C21 Centre game, Kieseritsky variation
e2e4 e7e5 d2d4 e5d4 g1f3 c7c5 f1c4 b7b5 
C21 Halasz gambit
e2e4 e7e5 d2d4 e5d4 f2f4 
C21 Danish gambit
e2e4 e7e5 d2d4 e5d4 c2c3 
  Collijn defence
e2e4 e7e5 d2d4 e5d4 c2c3 d4c3 f1c4 c3b2 c1b2 d8e7 
  Schlechter defence
e2e4 e7e5 d2d4 e5d4 c2c3 d4c3 f1c4 c3b2 c1b2 d7d5 
  Soerensen defence
e2e4 e7e5 d2d4 e5d4 c2c3 d7d5 
C21 Centre game
e2e4 e7e5 d2d4 e5d4 d1d4 
C22 Centre game
e2e4 e7e5 d2d4 e5d4 d1d4 b8c6 
  Paulsen attack
e2e4 e7e5 d2d4 e5d4 d1d4 b8c6 d4e3 
  Charousek variation
e2e4 e7e5 d2d4 e5d4 d1d4 b8c6 d4e3 f8b4 c2c3 b4e7 
  l'Hermet variation
e2e4 e7e5 d2d4 e5d4 d1d4 b8c6 d4e3 f7f5 
  Berger variation
e2e4 e7e5 d2d4 e5d4 d1d4 b8c6 d4e3 g8f6 
  Kupreichik variation
e2e4 e7e5 d2d4 e5d4 d1d4 b8c6 d4e3 g8f6 b1c3 f8b4 c1d2 e8g8 e1c1 f8e8 f1c4 d7d6 g1h3 
  Hall variation
e2e4 e7e5 d2d4 e5d4 d1d4 b8c6 d4c4 
C23 Bishop's opening
e2e4 e7e5 f1c4 
  Philidor counter-attack
e2e4 e7e5 f1c4 c7c6 
  Lisitsyn variation
e2e4 e7e5 f1c4 c7c6 d2d4 d7d5 e4d5 c6d5 c4b5 c8d7 b5d7 b8d7 d4e5 d7e5 g1e2 
  Calabrese counter-gambit
e2e4 e7e5 f1c4 f7f5 
  Calabrese counter-gambit, Jaenisch variation
e2e4 e7e5 f1c4 f7f5 d2d3 
  Classical variation
e2e4 e7e5 f1c4 f8c5 
  Lopez gambit
e2e4 e7e5 f1c4 f8c5 d1e2 b8c6 c2c3 g8f6 f2f4 
  Philidor variation
e2e4 e7e5 f1c4 f8c5 c2c3 
  Pratt variation
e2e4 e7e5 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 e4e5 d7d5 e5f6 d5c4 d1h5 e8g8 
  Lewis counter-gambit
e2e4 e7e5 f1c4 f8c5 c2c3 d7d5 
  del Rio variation
e2e4 e7e5 f1c4 f8c5 c2c3 d8g5 
  Lewis gambit
e2e4 e7e5 f1c4 f8c5 d2d4 
  Wing gambit
e2e4 e7e5 f1c4 f8c5 b2b4 
  MacDonnell double gambit
e2e4 e7e5 f1c4 f8c5 b2b4 c5b4 f2f4 
  Four pawns' gambit
e2e4 e7e5 f1c4 f8c5 b2b4 c5b4 f2f4 e5f4 g1f3 b4e7 d2d4 e7h4 g2g3 f4g3 e1g1 g3h2 g1h1 
  Berlin defence
e2e4 e7e5 f1c4 g8f6 
  Greco gambit
e2e4 e7e5 f1c4 g8f6 f2f4 
  Ponziani gambit
e2e4 e7e5 f1c4 g8f6 d2d4 
  Urusov gambit
e2e4 e7e5 f1c4 g8f6 d2d4 e5d4 g1f3 
  Urusov gambit, Panov variation
e2e4 e7e5 f1c4 g8f6 d2d4 e5d4 g1f3 d7d5 e4d5 f8b4 c2c3 d8e7 
C25 Vienna game
e2e4 e7e5 b1c3 
  Zhuravlev countergambit
e2e4 e7e5 b1c3 f8b4 d1g4 g8f6 
C25 Vienna game, Max Lange defence
e2e4 e7e5 b1c3 b8c6 
  Paulsen variation
e2e4 e7e5 b1c3 b8c6 g2g3 
  Fyfe gambit
e2e4 e7e5 b1c3 b8c6 d2d4 
C25 Vienna gambit
e2e4 e7e5 b1c3 b8c6 f2f4 
  Steinitz gambit
e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 d2d4 
  Steinitz gambit, Zukertort defence
e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 d2d4 d8h4 e1e2 d7d5 
  Steinitz gambit, Fraser-Minckwitz variation
e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 d2d4 d8h4 e1e2 b7b6 
C25 Vienna gambit
e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 g1f3 
  Hamppe-Allgaier gambit
e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 
  Hamppe-Allgaier gambit, Alapin variation
e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 d7d6 
  Hamppe-Muzio gambit
e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 
  Hamppe-Muzio, Dubois variation
e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 g4f3 d1f3 c6e5 f3f4 d8f6 
  Pierce gambit
e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 g1f3 g7g5 d2d4 
  Pierce gambit, Rushmere attack
e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 g1f3 g7g5 d2d4 g5g4 f1c4 g4f3 e1g1 d7d5 e4d5 c8g4 d5c6 
  Falkbeer variation
e2e4 e7e5 b1c3 g8f6 
  Mengarini variation
e2e4 e7e5 b1c3 g8f6 a2a3 
  Paulsen-Mieses variation
e2e4 e7e5 b1c3 g8f6 g2g3 
C26 Vienna game
e2e4 e7e5 b1c3 g8f6 f1c4 
C27 Vienna game
e2e4 e7e5 b1c3 g8f6 f1c4 f6e4 
  `Frankenstein-Dracula' variation
e2e4 e7e5 b1c3 g8f6 f1c4 f6e4 d1h5 e4d6 c4b3 b8c6 c3b5 g7g6 h5f3 f7f5 f3d5 d8e7 b5c7 e8d8 c7a8 b7b6 
  Adams' gambit
e2e4 e7e5 b1c3 g8f6 f1c4 f6e4 d1h5 e4d6 c4b3 b8c6 d2d4 
C27 Vienna game
e2e4 e7e5 b1c3 g8f6 f1c4 f6e4 d1h5 e4d6 c4b3 f8e7 
  Alekhine variation
e2e4 e7e5 b1c3 g8f6 f1c4 f6e4 d1h5 e4d6 c4b3 f8e7 g1f3 b8c6 f3e5 
C27 Boden-Kieseritsky gambit
e2e4 e7e5 b1c3 g8f6 f1c4 f6e4 g1f3 
  Lichtenhein defence
e2e4 e7e5 b1c3 g8f6 f1c4 f6e4 g1f3 d7d5 
C28 Vienna game
e2e4 e7e5 b1c3 g8f6 f1c4 b8c6 
C29 Vienna gambit
e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 
  Kaufmann variation
e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 f4e5 f6e4 g1f3 c8g4 d1e2 
  Breyer variation
e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 f4e5 f6e4 g1f3 f8e7 
  Paulsen attack
e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 f4e5 f6e4 d1f3 
  Bardeleben variation
e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 f4e5 f6e4 d1f3 f7f5 
  Heyde variation
e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 f4e5 f6e4 d1f3 f7f5 d2d4 
C29 Vienna gambit
e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 f4e5 f6e4 d2d3 
C29 Vienna gambit, Wurzburger trap
e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 f4e5 f6e4 d2d3 d8h4 g2g3 e4g3 g1f3 h4h5 c3d5 
C29 Vienna gambit, Steinitz variation
e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 d2d3 
C30 King's gambit
e2e4 e7e5 f2f4 
  Keene's defence
e2e4 e7e5 f2f4 d8h4 g2g3 h4e7 
  Mafia defence
e2e4 e7e5 f2f4 c7c5 
  Norwalde variation
e2e4 e7e5 f2f4 d8f6 
  Norwalde variation, Buecker gambit
e2e4 e7e5 f2f4 d8f6 g1f3 f6f4 b1c3 f8b4 f1c4 
  classical variation
e2e4 e7e5 f2f4 f8c5 
  classical, Svenonius variation
e2e4 e7e5 f2f4 f8c5 g1f3 d7d6 b1c3 g8f6 f1c4 b8c6 d2d3 c8g4 h2h3 g4f3 d1f3 e5f4 
  classical, Hanham variation
e2e4 e7e5 f2f4 f8c5 g1f3 d7d6 b1c3 b8d7 
  classical, 4.c3
e2e4 e7e5 f2f4 f8c5 g1f3 d7d6 c2c3 
  classical, Marshall attack
e2e4 e7e5 f2f4 f8c5 g1f3 d7d6 c2c3 c8g4 f4e5 d6e5 d1a4 
  classical counter-gambit
e2e4 e7e5 f2f4 f8c5 g1f3 d7d6 c2c3 f7f5 
  classical, Reti variation
e2e4 e7e5 f2f4 f8c5 g1f3 d7d6 c2c3 f7f5 f4e5 d6e5 d2d4 e5d4 f1c4 
  classical, Soldatenkov variation
e2e4 e7e5 f2f4 f8c5 g1f3 d7d6 f4e5 
  classical, Heath variation
e2e4 e7e5 f2f4 f8c5 g1f3 d7d6 b2b4 
  2...Nf6
e2e4 e7e5 f2f4 g8f6 
  Falkbeer counter-gambit
e2e4 e7e5 f2f4 d7d5 
  Falkbeer, Tartakower variation
e2e4 e7e5 f2f4 d7d5 g1f3 
  Falkbeer, Milner-Barry variation
e2e4 e7e5 f2f4 d7d5 b1c3 
  Falkbeer counter-gambit
e2e4 e7e5 f2f4 d7d5 e4d5 
  Nimzovich counter-gambit
e2e4 e7e5 f2f4 d7d5 e4d5 c7c6 
  Falkbeer, 3...e4
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 
  Falkbeer, Rubinstein variation
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 b1c3 g8f6 d1e2 
  Falkbeer, Nimzovich variation
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 f1b5 
  Falkbeer, 4.d3
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 
  Falkbeer, Morphy gambit
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 b1c3 f8b4 c1d2 e4e3 
  Falkbeer, 5.de
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 d3e4 
  Falkbeer, Alapin variation
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 d3e4 f6e4 g1f3 f8c5 d1e2 c5f2 e1d1 d8d5 f3d2 
  Falkbeer, main line, 7...Bf5
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 d3e4 f6e4 g1f3 f8c5 d1e2 c8f5 
  Falkbeer, Tarrasch variation
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 d3e4 f6e4 g1f3 f8c5 d1e2 c8f5 g2g4 e8g8 
  Falkbeer, Charousek gambit
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 d3e4 f6e4 d1e2 
  Falkbeer, Charousek variation
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 d3e4 f6e4 d1e2 d8d5 b1d2 f7f5 g2g4 
  Falkbeer, Keres variation
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 b1d2 
  Falkbeer, Reti variation
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 d1e2 
C33 King's gambit accepted
e2e4 e7e5 f2f4 e5f4 
  Tumbleweed gambit
e2e4 e7e5 f2f4 e5f4 e1f2 
  Orsini gambit
e2e4 e7e5 f2f4 e5f4 b2b3 
  Pawn's gambit (Stamma gambit)
e2e4 e7e5 f2f4 e5f4 h2h4 
  Schurig gambit
e2e4 e7e5 f2f4 e5f4 f1d3 
  Carrera (Basman) gambit
e2e4 e7e5 f2f4 e5f4 d1e2 
  Villemson (Steinitz) gambit
e2e4 e7e5 f2f4 e5f4 d2d4 
  Keres (Mason-Steinitz) gambit
e2e4 e7e5 f2f4 e5f4 b1c3 
  Breyer gambit
e2e4 e7e5 f2f4 e5f4 d1f3 
  Lesser bishop's (Petroff-Jaenisch-Tartakower) gambit
e2e4 e7e5 f2f4 e5f4 f1e2 
  bishop's gambit
e2e4 e7e5 f2f4 e5f4 f1c4 
  bishop's gambit, Chigorin's attack
e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 d7d5 c4d5 g7g5 g2g3 
  bishop's gambit, Greco variation
e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 f8c5 
  bishop's gambit, classical defence
e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 g7g5 
  bishop's gambit, Grimm attack
e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 g7g5 b1c3 f8g7 d2d4 d7d6 e4e5 
  bishop's gambit, classical defence
e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 g7g5 b1c3 f8g7 d2d4 g8e7 
  bishop's gambit, McDonnell attack
e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 g7g5 b1c3 f8g7 d2d4 g8e7 g2g3 
  bishop's gambit, McDonnell attack
e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 g7g5 b1c3 f8g7 g2g3 
  bishop's gambit, Fraser variation
e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 g7g5 b1c3 f8g7 g2g3 f4g3 d1f3 
  bishop's gambit, classical defence, Cozio attack
e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 g7g5 d1f3 
  bishop's gambit, Boden defence
e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 b8c6 
  bishop's gambit, Bryan counter-gambit
e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 b7b5 
  bishop's gambit, Bryan counter-gambit
e2e4 e7e5 f2f4 e5f4 f1c4 b7b5 
  bishop's gambit, Steinitz defence
e2e4 e7e5 f2f4 e5f4 f1c4 g8e7 
  bishop's gambit, Maurian defence
e2e4 e7e5 f2f4 e5f4 f1c4 b8c6 
  bishop's gambit, Ruy Lopez defence
e2e4 e7e5 f2f4 e5f4 f1c4 c7c6 
  bishop's gambit, Lopez-Gianutio counter-gambit
e2e4 e7e5 f2f4 e5f4 f1c4 f7f5 
  Lopez-Gianutio counter-gambit, Hein variation
e2e4 e7e5 f2f4 e5f4 f1c4 f7f5 d1e2 d8h4 e1d1 f5e4 b1c3 e8d8 
  bishop's gambit, Bledow variation
e2e4 e7e5 f2f4 e5f4 f1c4 d7d5 
  bishop's gambit, Gifford variation
e2e4 e7e5 f2f4 e5f4 f1c4 d7d5 c4d5 d8h4 e1f1 g7g5 g2g3 
  bishop's gambit, Boren-Svenonius variation
e2e4 e7e5 f2f4 e5f4 f1c4 d7d5 c4d5 d8h4 e1f1 f8d6 
  bishop's gambit, Anderssen variation
e2e4 e7e5 f2f4 e5f4 f1c4 d7d5 c4d5 c7c6 
  bishop's gambit, Morphy variation
e2e4 e7e5 f2f4 e5f4 f1c4 d7d5 c4d5 g8f6 
  bishop's gambit, Cozio (Morphy) defence
e2e4 e7e5 f2f4 e5f4 f1c4 g8f6 
  bishop's gambit, Bogolyubov variation
e2e4 e7e5 f2f4 e5f4 f1c4 g8f6 b1c3 
  bishop's gambit, Paulsen attack
e2e4 e7e5 f2f4 e5f4 f1c4 g8f6 b1c3 f8b4 e4e5 
  bishop's gambit, Jaenisch variation
e2e4 e7e5 f2f4 e5f4 f1c4 g8f6 b1c3 c7c6 
C34 King's knight's gambit
e2e4 e7e5 f2f4 e5f4 g1f3 
  Bonsch-Osmolovsky variation
e2e4 e7e5 f2f4 e5f4 g1f3 g8e7 
  Gianutio counter-gambit
e2e4 e7e5 f2f4 e5f4 g1f3 f7f5 
  Fischer defence
e2e4 e7e5 f2f4 e5f4 g1f3 d7d6 
  Becker defence
e2e4 e7e5 f2f4 e5f4 g1f3 h7h6 
  Schallop defence
e2e4 e7e5 f2f4 e5f4 g1f3 g8f6 
  Cunningham defence
e2e4 e7e5 f2f4 e5f4 g1f3 f8e7 
  Cunningham, Bertin gambit
e2e4 e7e5 f2f4 e5f4 g1f3 f8e7 f1c4 e7h4 g2g3 
  Cunningham, three pawns gambit
e2e4 e7e5 f2f4 e5f4 g1f3 f8e7 f1c4 e7h4 g2g3 f4g3 e1g1 g3h2 g1h1 
  Cunningham, Euwe defence
e2e4 e7e5 f2f4 e5f4 g1f3 f8e7 f1c4 g8f6 
  Abbazia defence (classical defence, modern defence[!])
e2e4 e7e5 f2f4 e5f4 g1f3 d7d5 
  Abbazia defence, modern variation
e2e4 e7e5 f2f4 e5f4 g1f3 d7d5 e4d5 g8f6 
  Abbazia defence, Botvinnik variation
e2e4 e7e5 f2f4 e5f4 g1f3 d7d5 e4d5 g8f6 f1b5 c7c6 d5c6 b7c6 b5c4 f6d5 
  Quaade gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 b1c3 
  Rosentreter gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 d2d4 
  Soerensen gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 d2d4 g5g4 f3e5 
  King's knight's gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 
  Blachly gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 b8c6 
  Lolli gambit (wild Muzio gambit)
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 c4f7 
  Lolli gambit, Young variation
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 c4f7 e8f7 e1g1 g4f3 d1f3 d8f6 d2d4 f6d4 c1e3 d4f6 b1c3 
  Ghulam Kassim gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 d2d4 
  MacDonnell gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 b1c3 
  Salvio gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 f3e5 
  Silberschmidt gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 f3e5 d8h4 e1f1 g8h6 d2d4 f4f3 
  Salvio gambit, Anderssen counter-attack
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 f3e5 d8h4 e1f1 g8h6 d2d4 d7d6 
  Cochrane gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 f3e5 d8h4 e1f1 f4f3 
  Herzfeld gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 f3e5 d8h4 e1f1 b8c6 
  Muzio gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 
  Muzio gambit, Paulsen variation
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 g4f3 d1f3 d8f6 e4e5 f6e5 d2d3 f8h6 b1c3 g8e7 c1d2 b8c6 a1e1 
  double Muzio gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 g4f3 d1f3 d8f6 e4e5 f6e5 c4f7 
  Muzio gambit, From defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 g4f3 d1f3 d8e7 
  Muzio gambit, Holloway defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 g4f3 d1f3 b8c6 
  Muzio gambit, Kling and Horwitz counter-attack
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 d8e7 
  Muzio gambit, Brentano defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 d7d5 
C38 King's knight's gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 f8g7 
  Hanstein gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 f8g7 e1g1 
  Philidor gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 f8g7 h2h4 
  Greco gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 f8g7 h2h4 h7h6 d2d4 d7d6 b1c3 c7c6 h4g5 h6g5 h1h8 g7h8 f3e5 
  Philidor gambit, Schultz variation
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 f8g7 h2h4 h7h6 d2d4 d7d6 d1d3 
C39 King's knight's gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 
  Allgaier gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 
  Allgaier, Horny defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 h7h6 g5f7 e8f7 d1g4 g8f6 g4f4 f8d6 
  Allgaier, Thorold variation
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 h7h6 g5f7 e8f7 d2d4 
  Allgaier, Cook variation
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 h7h6 g5f7 e8f7 d2d4 d7d5 c1f4 d5e4 f1c4 f7g7 f4e5 
  Allgaier, Blackburne gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 h7h6 g5f7 e8f7 b1c3 
  Allgaier, Walker attack
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 h7h6 g5f7 e8f7 f1c4 
  Allgaier, Urusov attack
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 h7h6 g5f7 e8f7 f1c4 d7d5 c4d5 f7g7 d2d4 
  Allgaier, Schlechter defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 g8f6 
  Kieseritsky, Paulsen defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 f8g7 
  Kieseritsky, long whip (Stockwhip, classical) defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 h7h5 
  Kieseritsky, long whip defence, Jaenisch variation
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 h7h5 f1c4 h8h7 d2d4 f8h6 b1c3 
  Kieseritsky, Brentano (Campbell) defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 d7d5 
  Kieseritsky, Brentano defence, Kaplanek variation
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 d7d5 d2d4 g8f6 e4d5 d8d5 b1c3 f8b4 e1f2 
  Kieseritsky, Brentano defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 d7d5 d2d4 g8f6 c1f4 
  Kieseritsky, Brentano defence, Caro variation
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 d7d5 d2d4 g8f6 c1f4 f6e4 b1d2 
  Kieseritsky, Salvio (Rosenthal) defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 d8e7 
  Kieseritsky, Salvio defence, Cozio variation
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 d8e7 d2d4 f7f5 f1c4 
  Kieseritsky, Polerio defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 f8e7 
  Kieseritsky, Neumann defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 b8c6 
  Kieseritsky, Kolisch defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 d7d6 
  Kieseritsky, Berlin defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 g8f6 
  Kieseritsky, Berlin defence, Riviere variation
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 g8f6 e5g4 d7d5 
  Kieseritsky, Berlin defence, 6.Bc4
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 g8f6 f1c4 
  Kieseritsky, Rice gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 g8f6 f1c4 d7d5 e4d5 f8d6 e1g1 
C40 King's knight opening
e2e4 e7e5 g1f3 
C40 Gunderam defence
e2e4 e7e5 g1f3 d8e7 
C40 Greco defence
e2e4 e7e5 g1f3 d8f6 
C40 Damiano's defence
e2e4 e7e5 g1f3 f7f6 
C40 QP counter-gambit (elephant gambit)
e2e4 e7e5 g1f3 d7d5 
  Maroczy gambit
e2e4 e7e5 g1f3 d7d5 e4d5 f8d6 
C40 Latvian counter-gambit
e2e4 e7e5 g1f3 f7f5 
  Nimzovich variation
e2e4 e7e5 g1f3 f7f5 f3e5 d8f6 d2d4 d7d6 e5c4 f5e4 c4e3 
  Fraser defence
e2e4 e7e5 g1f3 f7f5 f3e5 b8c6 
C40 Latvian gambit, 3.Bc4
e2e4 e7e5 g1f3 f7f5 f1c4 
  Behting variation
e2e4 e7e5 g1f3 f7f5 f1c4 f5e4 f3e5 d8g5 e5f7 g5g2 h1f1 d7d5 f7h8 g8f6 
  Polerio variation
e2e4 e7e5 g1f3 f7f5 f1c4 f5e4 f3e5 d7d5 
  corkscrew counter-gambit
e2e4 e7e5 g1f3 f7f5 f1c4 f5e4 f3e5 g8f6 
C41 Philidor's defence
e2e4 e7e5 g1f3 d7d6 
  Steinitz variation
e2e4 e7e5 g1f3 d7d6 f1c4 f8e7 c2c3 
  Lopez counter-gambit
e2e4 e7e5 g1f3 d7d6 f1c4 f7f5 
  Lopez counter-gambit, Jaenisch variation
e2e4 e7e5 g1f3 d7d6 f1c4 f7f5 d2d4 e5d4 f3g5 g8h6 g5h7 
C41 Philidor's defence
e2e4 e7e5 g1f3 d7d6 d2d4 
  Philidor counter-gambit
e2e4 e7e5 g1f3 d7d6 d2d4 f7f5 
  Philidor counter-gambit, del Rio attack
e2e4 e7e5 g1f3 d7d6 d2d4 f7f5 d4e5 f5e4 f3g5 d6d5 e5e6 
  Philidor counter-gambit, Berger variation
e2e4 e7e5 g1f3 d7d6 d2d4 f7f5 d4e5 f5e4 f3g5 d6d5 e5e6 f8c5 b1c3 
  Philidor counter-gambit, Zukertort variation
e2e4 e7e5 g1f3 d7d6 d2d4 f7f5 b1c3 
  exchange variation
e2e4 e7e5 g1f3 d7d6 d2d4 e5d4 
  Boden variation
e2e4 e7e5 g1f3 d7d6 d2d4 e5d4 d1d4 c8d7 
  exchange variation
e2e4 e7e5 g1f3 d7d6 d2d4 e5d4 f3d4 
  Paulsen attack
e2e4 e7e5 g1f3 d7d6 d2d4 e5d4 f3d4 d6d5 e4d5 
  exchange variation
e2e4 e7e5 g1f3 d7d6 d2d4 e5d4 f3d4 g8f6 
  Berger variation
e2e4 e7e5 g1f3 d7d6 d2d4 e5d4 f3d4 g8f6 b1c3 f8e7 f1e2 e8g8 e1g1 c7c5 d4f3 b8c6 c1g5 c8e6 f1e1 
  Larsen variation
e2e4 e7e5 g1f3 d7d6 d2d4 e5d4 f3d4 g7g6 
  Nimzovich (Jaenisch) variation
e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 
  Improved Hanham variation
e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 b1c3 b8d7 
  Nimzovich, Sozin variation
e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 b1c3 b8d7 f1c4 f8e7 e1g1 e8g8 d1e2 c7c6 a2a4 e5d4 
  Nimzovich, Larobok variation
e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 b1c3 b8d7 f1c4 f8e7 f3g5 e8g8 c4f7 
  Nimzovich variation
e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 d4e5 
  Nimzovich, Sokolsky variation
e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 d4e5 f6e4 b1d2 
  Nimzovich, Rellstab variation
e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 d4e5 f6e4 d1d5 
  Nimzovich, Locock variation
e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 f3g5 
  Nimzovich, Klein variation
e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 f1c4 
  Hanham variation
e2e4 e7e5 g1f3 d7d6 d2d4 b8d7 
  Hanham, Krause variation
e2e4 e7e5 g1f3 d7d6 d2d4 b8d7 f1c4 c7c6 e1g1 
  Hanham, Steiner variation
e2e4 e7e5 g1f3 d7d6 d2d4 b8d7 f1c4 c7c6 e1g1 f8e7 d4e5 
  Hanham, Kmoch variation
e2e4 e7e5 g1f3 d7d6 d2d4 b8d7 f1c4 c7c6 f3g5 
  Hanham, Berger variation
e2e4 e7e5 g1f3 d7d6 d2d4 b8d7 f1c4 c7c6 f3g5 g8h6 f2f4 f8e7 e1g1 e8g8 c2c3 d6d5 
  Hanham, Schlechter variation
e2e4 e7e5 g1f3 d7d6 d2d4 b8d7 f1c4 c7c6 b1c3 
  Hanham, Delmar variation
e2e4 e7e5 g1f3 d7d6 d2d4 b8d7 f1c4 c7c6 c2c3 
C42 Petrov's defence
e2e4 e7e5 g1f3 g8f6 
  French attack
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d3 
  Kaufmann attack
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 c2c4 
  Nimzovich attack
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 b1c3 
  Cozio (Lasker) attack
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d1e2 
  classical attack
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 
  classical attack, Chigorin variation
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8e7 e1g1 b8c6 f1e1 
  classical attack, Berger variation
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8e7 e1g1 b8c6 f1e1 c8g4 c2c3 f7f5 b1d2 
  classical attack, Krause variation
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8e7 e1g1 b8c6 f1e1 c8g4 c2c3 f7f5 c3c4 
  classical attack, Maroczy variation
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8e7 e1g1 b8c6 f1e1 c8g4 c2c3 f7f5 c3c4 e7h4 
  classical attack, Jaenisch variation
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8e7 e1g1 b8c6 c2c4 
  classical attack, Mason variation
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8e7 e1g1 e8g8 
  classical attack, Marshall variation
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8d6 
  classical attack, Tarrasch variation
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8d6 e1g1 e8g8 c2c4 c8g4 
  classical attack, Marshall trap
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8d6 e1g1 e8g8 c2c4 c8g4 c4d5 f7f5 f1e1 d6h2 
  classical attack, close variation
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 e4f6 
  Cochrane gambit
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f7 
  Paulsen attack
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5c4 
  Damiano variation
e2e4 e7e5 g1f3 g8f6 f3e5 f6e4 
C42 Petrov three knights game
e2e4 e7e5 g1f3 g8f6 b1c3 
  Italian variation
e2e4 e7e5 g1f3 g8f6 f1c4 
  modern (Steinitz) attack
e2e4 e7e5 g1f3 g8f6 d2d4 
  modern attack, main line
e2e4 e7e5 g1f3 g8f6 d2d4 e5d4 e4e5 f6e4 d1d4 
  modern attack, Steinitz variation
e2e4 e7e5 g1f3 g8f6 d2d4 e5d4 e4e5 f6e4 d1e2 
  modern attack, Bardeleben variation
e2e4 e7e5 g1f3 g8f6 d2d4 e5d4 e4e5 f6e4 d1e2 e4c5 f3d4 b8c6 
  Urusov gambit
e2e4 e7e5 g1f3 g8f6 d2d4 e5d4 f1c4 
  modern attack, Symmetrical variation
e2e4 e7e5 g1f3 g8f6 d2d4 f6e4 
  modern attack, Trifunovic variation
e2e4 e7e5 g1f3 g8f6 d2d4 f6e4 f1d3 d7d5 f3e5 f8d6 e1g1 e8g8 c2c4 d6e5 
C44 King's pawn game
e2e4 e7e5 g1f3 b8c6 
C44 Irish (Chicago) gambit
e2e4 e7e5 g1f3 b8c6 f3e5 c6e5 d2d4 
C44 Konstantinopolsky opening
e2e4 e7e5 g1f3 b8c6 g2g3 
C44 Dresden opening
e2e4 e7e5 g1f3 b8c6 c2c4 
C44 Inverted Hungarian
e2e4 e7e5 g1f3 b8c6 f1e2 
C44 Inverted Hanham
e2e4 e7e5 g1f3 b8c6 f1e2 g8f6 d2d3 d7d5 b1d2 
C44 Tayler opening
e2e4 e7e5 g1f3 b8c6 f1e2 g8f6 d2d4 
C44 Ponziani opening
e2e4 e7e5 g1f3 b8c6 c2c3 
  Caro variation
e2e4 e7e5 g1f3 b8c6 c2c3 d7d5 d1a4 c8d7 
  Leonhardt variation
e2e4 e7e5 g1f3 b8c6 c2c3 d7d5 d1a4 g8f6 
  Steinitz variation
e2e4 e7e5 g1f3 b8c6 c2c3 d7d5 d1a4 f7f6 
  Jaenisch counter-attack
e2e4 e7e5 g1f3 b8c6 c2c3 g8f6 
  Fraser defence
e2e4 e7e5 g1f3 b8c6 c2c3 g8f6 d2d4 f6e4 d4d5 f8c5 
  Reti variation
e2e4 e7e5 g1f3 b8c6 c2c3 g8e7 
  Romanishin variation
e2e4 e7e5 g1f3 b8c6 c2c3 f8e7 
C44 Ponziani counter-gambit
e2e4 e7e5 g1f3 b8c6 c2c3 f7f5 
C44 Ponziani counter-gambit, Schmidt attack
e2e4 e7e5 g1f3 b8c6 c2c3 f7f5 d2d4 d7d6 d4d5 
C44 Ponziani counter-gambit, Cordel variation
e2e4 e7e5 g1f3 b8c6 c2c3 f7f5 d2d4 d7d6 d4d5 f5e4 f3g5 c6b8 g5e4 g8f6 f1d3 f8e7 
C44 Scotch opening
e2e4 e7e5 g1f3 b8c6 d2d4 
  Lolli variation
e2e4 e7e5 g1f3 b8c6 d2d4 c6d4 
  Cochrane variation
e2e4 e7e5 g1f3 b8c6 d2d4 c6d4 f3e5 d4e6 f1c4 c7c6 e1g1 g8f6 e5f7 
  Relfsson gambit ('MacLopez')
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1b5 
  Goering gambit
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 c2c3 
  Sea-cadet mate
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 c2c3 d4c3 b1c3 d7d6 f1c4 c8g4 e1g1 c6e5 f3e5 g4d1 c4f7 e8e7 c3d5 !
  Goering gambit
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 c2c3 d4c3 b1c3 f8b4 
  Goering gambit, Bardeleben variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 c2c3 d4c3 b1c3 f8b4 f1c4 g8f6 
C44 Scotch gambit
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 
  Anderssen (Paulsen, Suhle) counter-attack
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8c5 e1g1 d7d6 c2c3 c8g4 
C44 Scotch gambit
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8c5 f3g5 
  Cochrane-Shumov defence
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8c5 f3g5 g8h6 g5f7 h6f7 c4f7 e8f7 d1h5 g7g6 h5c5 d7d5 
  Vitzhum attack
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8c5 f3g5 g8h6 d1h5 
C44 Scotch gambit
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8b4 
  Hanneken variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8b4 c2c3 d4c3 e1g1 c3b2 c1b2 g8f6 f3g5 e8g8 e4e5 c6e5 
C44 Scotch gambit
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8b4 c2c3 d4c3 b2c3 
  Cochrane variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8b4 c2c3 d4c3 b2c3 b4a5 e4e5 
  Benima defence
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8e7 
  Dubois-Reti defence
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 g8f6 
C45 Scotch game
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 
  Ghulam Kassim variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 c6d4 d1d4 d7d6 f1d3 
  Pulling counter-attack
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 d8h4 
  Horwitz attack
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 d8h4 d4b5 
  Berger variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 d8h4 d4b5 f8b4 b1d2 h4e4 f1e2 e4g2 e2f3 g2h3 b5c7 e8d8 c7a8 g8f6 a2a3 
C45 Scotch game
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 d8h4 d4b5 f8b4 c1d2 
  Rosenthal variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 d8h4 d4b5 f8b4 c1d2 h4e4 f1e2 e8d8 e1g1 b4d2 b1d2 e4g6 
  Fraser attack
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 d8h4 d4f3 
  Steinitz variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 d8h4 b1c3 
  Schmidt variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 g8f6 
  Mieses variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 g8f6 d4c6 b7c6 e4e5 
  Tartakower variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 g8f6 d4c6 b7c6 b1d2 
C45 Scotch game
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 
  Blackburne attack
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 c1e3 d8f6 c2c3 g8e7 d1d2 
  Gottschall variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 c1e3 d8f6 c2c3 g8e7 d1d2 d7d5 d4b5 c5e3 d2e3 e8g8 b5c7 a8b8 c7d5 e7d5 e4d5 c6b4 
  Paulsen attack
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 c1e3 d8f6 c2c3 g8e7 f1b5 
  Paulsen, Gunsberg defence
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 c1e3 d8f6 c2c3 g8e7 f1b5 c6d8 
  Meitner variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 c1e3 d8f6 c2c3 g8e7 d4c2 
  Blumenfeld attack
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 c1e3 d8f6 d4b5 
  Potter variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 d4b3 
  Romanishin variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 d4b3 c5b4 
C46 Three knights game
e2e4 e7e5 g1f3 b8c6 b1c3 
  Schlechter variation
e2e4 e7e5 g1f3 b8c6 b1c3 f8b4 c3d5 g8f6 
  Winawer defence (Gothic defence)
e2e4 e7e5 g1f3 b8c6 b1c3 f7f5 
  Steinitz variation
e2e4 e7e5 g1f3 b8c6 b1c3 g7g6 
  Steinitz, Rosenthal variation
e2e4 e7e5 g1f3 b8c6 b1c3 g7g6 d2d4 e5d4 c3d5 
C46 Four knights game
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 
  Schultze-Mueller gambit
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f3e5 
  Italian variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1c4 
  Gunsberg variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 a2a3 
  Scotch variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 d2d4 
  Scotch, Krause variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 d2d4 f8b4 f3e5 
  Scotch, 4...exd4
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 d2d4 e5d4 
  Belgrade gambit
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 d2d4 e5d4 c3d5 
  Spanish variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 
  Ranken variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 a7a6 b5c6 
  Spielmann variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 a7a6 b5c6 d7c6 f3e5 f6e4 c3e4 d8d4 e1g1 d4e5 f1e1 c8e6 d2d4 e5d5 
  Spanish, classical defence
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8c5 
  Bardeleben variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8c5 e1g1 e8g8 f3e5 c6e5 d2d4 c5d6 f2f4 e5c6 e4e5 d6b4 
  Marshall variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8c5 e1g1 e8g8 f3e5 c6d4 
  Rubinstein counter-gambit
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 c6d4 
  Rubinstein counter-gambit, Bogolyubov variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 c6d4 f3e5 d8e7 f2f4 
  Rubinstein counter-gambit, 5.Be2
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 c6d4 b5e2 
  Rubinstein counter-gambit Maroczy variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 c6d4 b5e2 d4f3 e2f3 f8c5 e1g1 e8g8 d2d3 d7d6 c3a4 c5b6 
  Rubinstein counter-gambit, exchange variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 c6d4 f3d4 
  Rubinstein counter-gambit, Henneberger variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 c6d4 e1g1 
  double Ruy Lopez
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 
  Gunsberg counter-attack
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 c3d5 f6d5 e4d5 e5e4 
  double Ruy Lopez
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 
  Alatortsev variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 d8e7 c3e2 d7d5 
C49 Four knights
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 b4c3 
  Janowski variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 b4c3 b2c3 d7d6 f1e1 
  Svenonius variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 b4c3 b2c3 d7d5 
  symmetrical variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 d7d6 
  symmetrical, Metger unpin
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 d7d6 c1g5 b4c3 b2c3 d8e7 
  symmetrical, Capablanca variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 d7d6 c1g5 b4c3 b2c3 d8e7 f1e1 c6d8 d3d4 c8g4 
  symmetrical, Pillsbury variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 d7d6 c1g5 c6e7 
  symmetrical, Blake variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 d7d6 c1g5 c6e7 f3h4 c7c6 b5c4 d6d5 c4b3 d8d6 
  symmetrical, Tarrasch variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 d7d6 c1g5 c8e6 
  symmetrical, Maroczy system
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 d7d6 c3e2 
  Nimzovich (Paulsen) variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 b5c6 
C50 King's pawn game
e2e4 e7e5 g1f3 b8c6 f1c4 
C50 Blackburne shilling gambit
e2e4 e7e5 g1f3 b8c6 f1c4 c6d4 f3e5 d8g5 e5f7 g5g2 h1f1 g2e4 c4e2 d4f3 -
C50 Rousseau gambit
e2e4 e7e5 g1f3 b8c6 f1c4 f7f5 
C50 Hungarian defence
e2e4 e7e5 g1f3 b8c6 f1c4 f8e7 
  Tartakower variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8e7 d2d4 e5d4 c2c3 g8f6 e4e5 f6e4 
C50 Giuoco Piano
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 
  four knights variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b1c3 g8f6 
  Jerome gambit
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c4f7 
C50 Giuoco Pianissimo
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 d2d3 
  Dubois variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 d2d3 f7f5 f3g5 f5f4 
C50 Giuoco Pianissimo
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 d2d3 g8f6 
  Italian four knights variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 d2d3 g8f6 b1c3 
  Canal variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 d2d3 g8f6 b1c3 d7d6 c1g5 
C51 Evans gambit declined
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 
C51 Evans gambit declined, Lange variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b6 b4b5 c6a5 f3e5 g8h6 
C51 Evans gambit declined, Pavlov variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b6 b4b5 c6a5 f3e5 g8h6 d2d4 d7d6 c1h6 d6e5 h6g7 h8g8 c4f7 e8f7 g7e5 d8g5 b1d2 
C51 Evans gambit declined, Hirschbach variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b6 b4b5 c6a5 f3e5 d8g5 
C51 Evans gambit declined, Vasquez variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b6 b4b5 c6a5 f3e5 d8g5 c4f7 e8e7 d1h5 
C51 Evans gambit declined, Hicken variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b6 b4b5 c6a5 f3e5 d8g5 d1f3 g5e5 f3f7 e8d8 c1b2 
C51 Evans gambit declined, 5.a4
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b6 a2a4 
C51 Evans gambit declined, Showalter variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b6 a2a4 a7a6 b1c3 
C51 Evans gambit declined, Cordel variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b6 c1b2 
C51 Evans counter-gambit
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 d7d5 
C51 Evans gambit
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 
  normal variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 
  Ulvestad variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 d4d5 c6a5 c1b2 
  Paulsen variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 d4d5 c6a5 c1b2 g8e7 
  Morphy attack
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 b1c3 
  Goering attack
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 b1c3 c6a5 c1g5 
  Steinitz variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 b1c3 c6a5 c1g5 f7f6 g5e3 
C51 Evans gambit
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 b1c3 c8g4 
  Fraser attack
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 b1c3 c8g4 d1a4 
  Fraser-Mortimer attack
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 b1c3 c8g4 d1a4 g4d7 a4b3 c6a5 c4f7 e8f8 b3c2 
  Stone-Ware variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4d6 
  Mayet defence
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4f8 
  5...Be7
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4e7 
  Cordel variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4e7 d2d4 c6a5 
C52 Evans gambit
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 
  compromised defence
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 e5d4 e1g1 d4c3 
  compromised defence, Paulsen variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 e5d4 e1g1 d4c3 d1b3 d8f6 e4e5 f6g6 b1c3 g8e7 c1a3 
  compromised defence, Potter variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 e5d4 e1g1 d4c3 d1b3 d8f6 e4e5 f6g6 b1c3 g8e7 f1d1 
  Leonhardt variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 b7b5 
C52 Evans gambit
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 d7d6 
  Tartakower attack
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 d7d6 d1b3 
  Levenfish variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 d7d6 d1b3 d8d7 d4e5 d6e5 e1g1 a5b6 c1a3 c6a5 f3e5 
  Sokolsky variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 d7d6 c1g5 
C52 Evans gambit
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 e1g1 
  Richardson attack
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 e1g1 g8f6 d2d4 e8g8 f3e5 
C52 Evans gambit
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 e1g1 d7d6 
  Waller attack
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 e1g1 d7d6 d2d4 e5d4 d1b3 
  Lasker defence
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 e1g1 d7d6 d2d4 a5b6 
  Sanders-Alapin variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 e1g1 d7d6 d2d4 c8d7 
  Alapin-Steinitz variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 e1g1 d7d6 d2d4 c8g4 
C53 Giuoco Piano
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 
  LaBourdonnais variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 d7d6 d2d4 e5d4 c3d4 c5b6 
  close variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 d8e7 
  centre-holding variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 d8e7 d2d4 c5b6 
  Tarrasch variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 d8e7 d2d4 c5b6 e1g1 g8f6 a2a4 a7a6 f1e1 d7d6 h2h3 
  Mestel variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 d8e7 d2d4 c5b6 c1g5 
  Eisinger variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 d8e7 d2d4 c5b6 d4d5 c6b8 d5d6 
C53 Giuoco Piano
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 
  Bird's attack
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 b2b4 
C53 Giuoco Piano
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 
  Ghulam Kassim variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 e4e5 f6e4 c4d5 e4f2 e1f2 d4c3 f2g3 
C53 Giuoco Piano
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 e4e5 d7d5 
  Anderssen variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 e4e5 d7d5 c4b5 f6e4 c3d4 c5b4 
C54 Giuoco Piano
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 
  Krause variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 c1d2 f6e4 d2b4 c6b4 c4f7 e8f7 d1b3 d7d5 f3e5 f7f6 f2f3 
  Cracow variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 e1f1 
  Greco's attack
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 
  Greco variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 f6e4 e1g1 e4c3 
  Bernstein variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 f6e4 e1g1 e4c3 b2c3 b4c3 d1b3 d7d5 
  Aitken variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 f6e4 e1g1 e4c3 b2c3 b4c3 c1a3 
C54 Giuoco Piano
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 f6e4 e1g1 b4c3 
  Steinitz variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 f6e4 e1g1 b4c3 b2c3 d7d5 c1a3 
  Moeller (Therkatz) attack
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 f6e4 e1g1 b4c3 d4d5 
  Therkatz-Herzog variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 f6e4 e1g1 b4c3 d4d5 c3f6 f1e1 c6e7 e1e4 d7d6 c1g5 f6g5 f3g5 e8g8 g5h7 
  Moeller, bayonet attack
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 f6e4 e1g1 b4c3 d4d5 c3f6 f1e1 c6e7 e1e4 d7d6 g2g4 
C55 Two knights defence
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 
  Rosentreter variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 e1g1 f8c5 d2d4 c5d4 f3d4 c6d4 c1g5 h7h6 g5h4 g7g5 f2f4 
C55 Giuoco piano
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 e1g1 f8c5 d2d4 c5d4 f3d4 c6d4 c1g5 d7d6 
  Holzhausen attack
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 e1g1 f8c5 d2d4 c5d4 f3d4 c6d4 c1g5 d7d6 f2f4 d8e7 f4e5 d6e5 b1c3 
C55 Two knights defence (Modern bishop's opening)
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d3 
C55 Two knights defence
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 
C55 Two knights defence, Keidanz variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e4e5 d7d5 c4b5 f6e4 f3d4 f8c5 d4c6 c5f2 e1f1 d8h4 
C55 Two knights defence, Perreux variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 f3g5 
C55 Two knights defence
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 
  Max Lange attack
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f8c5 e4e5 
  Max Lange attack, Berger variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f8c5 e4e5 d7d5 e5f6 d5c4 f1e1 c8e6 f3g5 d8d5 b1c3 d5f5 g2g4 f5g6 c3e4 c5b6 f2f4 e8c8 
  Max Lange attack, Marshall variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f8c5 e4e5 d7d5 e5f6 d5c4 f1e1 c8e6 f3g5 d8d5 b1c3 d5f5 c3e4 
  Max Lange attack, Rubinstein variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f8c5 e4e5 d7d5 e5f6 d5c4 f1e1 c8e6 f3g5 d8d5 b1c3 d5f5 c3e4 c5f8 
  Max Lange attack, Loman defence
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f8c5 e4e5 d7d5 e5f6 d5c4 f1e1 c8e6 f3g5 g7g6 
  Max Lange attack, Schlechter variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f8c5 e4e5 d7d5 e5f6 d5c4 f1e1 c8e6 f6g7 
  Max Lange attack, Steinitz variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f8c5 e4e5 f6g4 
  Max Lange attack, Krause variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f8c5 e4e5 f6g4 c2c3 
C56 Two knights defence
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f6e4 
  Yurdansky attack
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f6e4 f1e1 d7d5 c4d5 d8d5 b1c3 d5a5 c3e4 c8e6 c1g5 h7h6 g5h4 g7g5 e4f6 e8e7 b2b4 
  Canal variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f6e4 f1e1 d7d5 b1c3 
C57 Two knights defence
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 
  Wilkes Barre (Traxler) variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 f8c5 
  Ulvestad variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 b7b5 
  Fritz variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6d4 
  Fritz, Gruber variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6d4 c2c3 b7b5 c4f1 f6d5 g5e4 
  Lolli attack
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 f6d5 d2d4 
  Pincus variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 f6d5 d2d4 f8b4 
  Fegatello attack
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 f6d5 g5f7 
  Fegatello attack, Leonhardt variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 f6d5 g5f7 e8f7 d1f3 f7e6 b1c3 c6b4 f3e4 c7c6 a2a3 b4a6 d2d4 a6c7 
  Fegatello attack, Polerio defence
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 f6d5 g5f7 e8f7 d1f3 f7e6 b1c3 c6e7 
C58 two knights defence
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 
  Kieseritsky variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 d2d3 
  Yankovich variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 d2d3 h7h6 g5f3 e5e4 d1e2 a5c4 d3c4 f8c5 f3d2 
  Maroczy variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 d2d3 h7h6 g5f3 e5e4 d1e2 a5c4 d3c4 f8e7 
C58 Two knights defence
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 
  Bogolyubov variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 d1f3 
  Paoli variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 d1f3 d8c7 b5d3 
  Colman variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 d1f3 a8b8 
  Blackburne variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 d1f3 c6b5 
C58 Two knights defence
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 b5e2 
C59 Two knights defence
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 b5e2 h7h6 
  Knorre variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 b5e2 h7h6 g5f3 e5e4 f3e5 f8d6 d2d4 d8c7 c1d2 
  Goering variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 b5e2 h7h6 g5f3 e5e4 f3e5 d8c7 
  Steinitz variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 b5e2 h7h6 g5h3 
C60 Ruy Lopez (Spanish opening)
e2e4 e7e5 g1f3 b8c6 f1b5 
  Nuernberg variation
e2e4 e7e5 g1f3 b8c6 f1b5 f7f6 
  Pollock defence
e2e4 e7e5 g1f3 b8c6 f1b5 c6a5 
  Lucena defence
e2e4 e7e5 g1f3 b8c6 f1b5 f8e7 
  Vinogradov variation
e2e4 e7e5 g1f3 b8c6 f1b5 d8e7 
  Brentano defence
e2e4 e7e5 g1f3 b8c6 f1b5 g7g5 
  fianchetto (Smyslov/Barnes) defence
e2e4 e7e5 g1f3 b8c6 f1b5 g7g6 
  Cozio defence
e2e4 e7e5 g1f3 b8c6 f1b5 g8e7 
  Cozio defence, Paulsen variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8e7 b1c3 g7g6 
  Bird's defence
e2e4 e7e5 g1f3 b8c6 f1b5 c6d4 
  Bird's defence, Paulsen variation
e2e4 e7e5 g1f3 b8c6 f1b5 c6d4 f3d4 e5d4 e1g1 g8e7 
  old Steinitz defence
e2e4 e7e5 g1f3 b8c6 f1b5 d7d6 
  old Steinitz defence, Nimzovich attack
e2e4 e7e5 g1f3 b8c6 f1b5 d7d6 d2d4 c8d7 b1c3 g8f6 b5c6 
  old Steinitz defence, semi-Duras variation
e2e4 e7e5 g1f3 b8c6 f1b5 d7d6 d2d4 c8d7 c2c4 
  Schliemann defence
e2e4 e7e5 g1f3 b8c6 f1b5 f7f5 
  Schliemann defence, Berger variation
e2e4 e7e5 g1f3 b8c6 f1b5 f7f5 b1c3 
  classical (Cordel) defence
e2e4 e7e5 g1f3 b8c6 f1b5 f8c5 
  classical defence, Zaitsev variation
e2e4 e7e5 g1f3 b8c6 f1b5 f8c5 e1g1 c6d4 b2b4 
  classical defence, 4.c3
e2e4 e7e5 g1f3 b8c6 f1b5 f8c5 c2c3 
  classical defence, Benelux variation  
e2e4 e7e5 g1f3 b8c6 f1b5 f8c5 c2c3 g8f6 e1g1 e8g8 d2d4 c5b6 
  classical defence, Charousek variation
e2e4 e7e5 g1f3 b8c6 f1b5 f8c5 c2c3 c5b6 
  classical defence, Boden variation
e2e4 e7e5 g1f3 b8c6 f1b5 f8c5 c2c3 d8e7 
  Cordel gambit
e2e4 e7e5 g1f3 b8c6 f1b5 f8c5 c2c3 f7f5 
  Berlin defence
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 
  Berlin defence, Nyholm attack
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 d2d4 e5d4 e1g1 
  Berlin defence, Mortimer variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 d2d3 c6e7 
  Berlin defence, Mortimer trap
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 d2d3 c6e7 f3e5 c7c6 
  Berlin defence, Anderssen variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 d2d3 d7d6 b5c6 
  Berlin defence, Duras variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 d2d3 d7d6 c2c4 
  Berlin defence, Kaufmann variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 d2d3 f8c5 c1e3 
  Berlin defence, 4.O-O
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 
  Berlin defence, Beverwijk variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f8c5 
  Berlin defence, 4.O-O, d6
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 d7d6 
  Berlin defence, hedgehog variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 d7d6 d2d4 c8d7 b1c3 f8e7 
  Berlin defence, Tarrasch trap
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 d7d6 d2d4 c8d7 b1c3 f8e7 f1e1 e8g8 
  closed Berlin defence, Bernstein variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 d7d6 d2d4 c8d7 b1c3 f8e7 c1g5 
  closed Berlin defence, Showalter variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 d7d6 d2d4 c8d7 b1c3 f8e7 b5c6 
  closed Berlin defence, Wolf variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 d7d6 d2d4 c8d7 b1c3 e5d4 
  closed Berlin defence, Chigorin variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 d7d6 d2d4 f6d7 
  Berlin defence, open variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 
  open Berlin defence, l'Hermet variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 e4d6 d4e5 
  open Berlin defence, Showalter variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 e4d6 b5a4 
  open Berlin defence, 5...Be7
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 f8e7 
  Berlin defence, Rio de Janeiro variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 f8e7 d1e2 e4d6 b5c6 b7c6 d4e5 d6b7 b1c3 e8g8 f1e1 b7c5 f3d4 c5e6 c1e3 e6d4 e3d4 c6c5 
  Berlin defence, Zukertort variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 f8e7 d1e2 e4d6 b5c6 b7c6 d4e5 d6b7 c2c4 
  Berlin defence, Pillsbury variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 f8e7 d1e2 e4d6 b5c6 b7c6 d4e5 d6b7 b2b3 
  Berlin defence, Winawer attack
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 f8e7 d1e2 e4d6 b5c6 b7c6 d4e5 d6b7 f3d4 
  Berlin defence, Cordel variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 f8e7 d1e2 e4d6 b5c6 b7c6 d4e5 d6f5 
  Berlin defence, Trifunovic variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 f8e7 d1e2 d7d5 
  Berlin defence, Minckwitz variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 f8e7 d4e5 
  Berlin defence, Rosenthal variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 a7a6 
  exchange variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 
  exchange, Alekhine variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 d7c6 d2d4 e5d4 d1d4 d8d4 f3d4 c8d7 
  exchange, Keres variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 d7c6 b1c3 
  exchange, Romanovsky variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 d7c6 b1c3 f7f6 d2d3 
  exchange variation, 5.O-O
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 d7c6 e1g1 
  exchange variation, Alapin gambit
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 d7c6 e1g1 c8g4 h2h3 h7h5 
  exchange, Gligoric variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 d7c6 e1g1 f7f6 
  exchange, Bronstein variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 d7c6 e1g1 d8d6 
C70 Ruy Lopez
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 
  fianchetto defence deferred
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g7g6 
  Cozio defence deferred
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8e7 
  Bird's defence deferred
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 c6d4 
  Alapin's defence deferred
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 f8b4 
  Classical defence deferred
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 f8c5 
  Caro variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 b7b5 
  Graz variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 b7b5 a4b3 f8c5 
  Taimanov (chase/wing/accelerated counterthrust) variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 b7b5 a4b3 c6a5 
  Schliemann defence deferred
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 f7f5 
  modern Steinitz defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 
  Noah's ark trap
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 d2d4 b7b5 a4b3 c6d4 f3d4 e5d4 d1d4 c7c5 
  modern Steinitz defence, Three knights variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 b1c3 
  modern Steinitz defence, Duras (Keres) variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 c2c4 
  modern Steinitz defence, 5.O-O
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 e1g1 
  modern Steinitz defence, Richter variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 a4c6 b7c6 d2d4 
  modern Steinitz defence, Alapin variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 a4c6 b7c6 d2d4 f7f6 
  modern Steinitz defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 c2c3 
  modern Steinitz defence, siesta variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 c2c3 f7f5 
  Siesta, Kopayev variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 c2c3 f7f5 e4f5 c8f5 e1g1 
  modern Steinitz defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 c2c3 c8d7 
  modern Steinitz defence, Rubinstein variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 c2c3 c8d7 d2d4 g8e7 
  modern Steinitz defence, fianchetto (Bronstein) variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 c2c3 c8d7 d2d4 g7g6 
  Morphy defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 
  four knights (Tarrasch) variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 b1c3 
  Treybal (Bayreuth) variation (exchange var. deferred)
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 a4c6 
  Wormald (Alapin) attack
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 d1e2 
  Wormald attack, Gruenfeld variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 d1e2 b7b5 a4b3 f8e7 d2d4 d7d6 c2c3 c8g4 
  Anderssen variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 d2d3 
  Morphy defence, Duras variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 d2d3 d7d6 c2c4 
  5.O-O
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 
  Wing attack
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 b7b5 a4b3 f8e7 a2a4 
  ...b5 & ...d6
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 b7b5 a4b3 d7d6 
  Rabinovich variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 b7b5 a4b3 d7d6 f3g5 d6d5 e4d5 c6d4 f1e1 f8c5 e1e5 e8f8 
  Archangelsk (counterthrust) variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 b7b5 a4b3 c8b7 
  Moeller defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8c5 
  Steinitz defence deferred (Russian defence)
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 d7d6 
  Steinitz defence deferred, Lipnitsky variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 d7d6 a4c6 b7c6 d2d4 c8g4 
  Steinitz defence deferred, Rubinstein variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 d7d6 a4c6 b7c6 d2d4 f6e4 
  Steinitz defence deferred, Boleslavsky variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 d7d6 a4c6 b7c6 d2d4 f6e4 f1e1 f7f5 d4e5 d6d5 b1c3 
  open (Tarrasch) defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 
  open, Tartakower variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d1e2 
  open, Knorre variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 b1c3 
  open, 6.d4
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 
  open, Riga variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 e5d4 
  open, 6.d4 b5
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 
  open, Friess attack
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 f3e5 
  open, Richter variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 d4d5 
  open, 7.Bb3
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 
  open, Schlechter defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 a2a4 c6d4 
  open, Berger variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 a2a4 c6d4 f3d4 e5d4 b1c3 
  open, Harksen gambit
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 c2c4 
  open, 8.de
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 
  open, Zukertort variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c6e7 
  open, 8...Be6
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 
  open, Bernstein variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 b1d2 
  open, Bernstein variation, Karpov gambit
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 b1d2 e4c5 c2c3 d5d4 f3g5 
  open, Howell attack
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 d1e2 
  open, Howell attack, Ekstroem variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 d1e2 f8e7 f1d1 e8g8 c2c4 b5c4 b3c4 d8d7 
  open, Howell attack, Adam variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 d1e2 f8e7 c2c4 
  open, 9.c3
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 
  open, Berlin variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 e4c5 
  open, Italian variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8c5 
  open, St. Petersburg variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8c5 b1d2 
  open, Dilworth variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8c5 b1d2 e8g8 b3c2 e4f2 
  open, Motzko attack
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8c5 d1d3 
  open, Motzko attack, Nenarokov variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8c5 d1d3 c6e7 
  open, classical defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8e7 
  open, Malkin variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8e7 b1d2 e8g8 d1e2 
  open, 9...Be7, 10.Re1
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8e7 f1e1 
  open, Tarrasch trap
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8e7 f1e1 e8g8 f3d4 d8d7 d4e6 f7e6 e1e4 
  open, Breslau variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8e7 f1e1 e8g8 f3d4 c6e5 
  closed defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 
  closed, centre attack
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 d2d4 
  closed, Basque gambit (North Spanish variation)
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 d2d4 e5d4 e4e5 f6e4 c2c3 
  Exchange variation doubly deferred (DERLD)
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 a4c6 
  Worrall attack
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 d1e2 
  Worrall attack, sharp line
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 d1e2 b7b5 a4b3 e8g8 
  Worrall attack, solid line
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 d1e2 b7b5 a4b3 d7d6 
  closed, Averbach variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 d7d6 
  closed
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 
  closed, Leonhardt variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 c6a5 b3c2 c7c5 d2d4 d8c7 h2h3 a5c6 d4d5 c6b8 b1d2 g7g5 
  closed, Balla variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 c6a5 b3c2 c7c5 d2d4 d8c7 a2a4 
  closed, 7...d6, 8.d4
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 d2d4 
  Noah's ark trap
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 d2d4 c6d4 f3d4 e5d4 d1d4 c7c5 
  Trajkovic counter-attack
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 c8b7 
  closed, 7...O-O
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 
  closed, anti-Marshall 8.a4
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 a2a4 
  closed, 8.c3
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 
  Marshall counter-attack
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d5 
  Marshall counter-attack, 11...c6
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d5 e4d5 f6d5 f3e5 c6e5 e1e5 c7c6 
  Marshall, Kevitz variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d5 e4d5 f6d5 f3e5 c6e5 e1e5 c7c6 b3d5 c6d5 d2d4 e7d6 e5e3 
  Marshall, main line, 12.d2d4
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d5 e4d5 f6d5 f3e5 c6e5 e1e5 c7c6 d2d4 
  Marshall, main line, 14...Qh3
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d5 e4d5 f6d5 f3e5 c6e5 e1e5 c7c6 d2d4 e7d6 e5e1 d8h4 g2g3 h4h3 
  Marshall, main line, Spassky variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d5 e4d5 f6d5 f3e5 c6e5 e1e5 c7c6 d2d4 e7d6 e5e1 d8h4 g2g3 h4h3 c1e3 c8g4 d1d3 a8e8 b1d2 e8e6 a2a4 h3h5 
  Marshall, Herman Steiner variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d5 e4d5 e5e4 
  closed (with ...d6)
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 
  closed, Pilnik variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 d2d3 
  closed, Lutikov variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 b3c2 
  closed, Suetin variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 a2a3 
  closed, 9.d4
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 d2d4 
  closed, Bogolyubov variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 d2d4 c8g4 
  closed, 9.h3
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 
  closed, Keres (9...a5) variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 a6a5 
  closed, Kholmov variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c8e6 
  closed, Ragozin-Petrosian (`Keres') variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 f6d7 
  closed, Flohr-Zaitsev system (Lenzerheide variation)
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c8b7 
  closed, Smyslov defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 h7h6 
  closed, Breyer defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6b8 
  closed, Breyer, 10.d4
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6b8 d2d4 
  closed, Breyer, Borisenko variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6b8 d2d4 b8d7 
  closed, Breyer, Gligoric variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6b8 d2d4 b8d7 b1d2 c8b7 b3c2 c7c5 
  closed, Breyer, Simagin variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6b8 d2d4 b8d7 f3h4 
  closed (8...Na5)
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6a5 b3c2 
  closed, Rossolimo defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6a5 b3c2 c7c6 d2d4 d8c7 
  closed (10...c5)
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6a5 b3c2 c7c5 
  closed, Borisenko defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6a5 b3c2 c7c5 d2d4 a5c6 
  closed, Keres (...Nd7) defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6a5 b3c2 c7c5 d2d4 f6d7 
  closed, Chigorin defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6a5 b3c2 c7c5 d2d4 d8c7 
  closed, Chigorin, Yugoslav system
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6a5 b3c2 c7c5 d2d4 d8c7 b1d2 c8d7 d2f1 f8e8 f1e3 g7g6 
  closed, Chigorin, 12...Nc6
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6a5 b3c2 c7c5 d2d4 d8c7 b1d2 a5c6 
  closed, Chigorin, Rauzer attack
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6a5 b3c2 c7c5 d2d4 d8c7 b1d2 a5c6 d4c5 
  closed, Chigorin, 12...c5d4
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6a5 b3c2 c7c5 d2d4 d8c7 b1d2 c5d4 c3d4 
D00 Queen's pawn game
d2d4 d7d5 
D00 Queen's pawn, Mason variation
d2d4 d7d5 c1f4 
D00 Queen's pawn, Mason variation, Steinitz counter-gambit
d2d4 d7d5 c1f4 c7c5 
D00 Levitsky attack (Queen's bishop attack)
d2d4 d7d5 c1g5 
D00 Blackmar gambit
d2d4 d7d5 e2e4 
  stonewall attack
d2d4 d7d5 e2e3 g8f6 f1d3 
  Chigorin variation
d2d4 d7d5 b1c3 
  Anti-Veresov
d2d4 d7d5 b1c3 c8g4 
D00 Blackmar-Diemer gambit
d2d4 d7d5 b1c3 g8f6 e2e4 
  Euwe defence
d2d4 d7d5 b1c3 g8f6 e2e4 d5e4 f2f3 e4f3 g1f3 e7e6 
  Lemberg counter-gambit
d2d4 d7d5 b1c3 g8f6 e2e4 e7e5 
D01 Richter-Veresov attack
d2d4 d7d5 b1c3 g8f6 c1g5 
D01 Richter-Veresov attack, Veresov variation
d2d4 d7d5 b1c3 g8f6 c1g5 c8f5 g5f6 
D01 Richter-Veresov attack, Richter variation
d2d4 d7d5 b1c3 g8f6 c1g5 c8f5 f2f3 
D02 Queen's pawn game
d2d4 d7d5 g1f3 
D02 Queen's pawn game, Chigorin variation
d2d4 d7d5 g1f3 b8c6 
D02 Queen's pawn game, Krause variation
d2d4 d7d5 g1f3 c7c5 
D02 Queen's pawn game
d2d4 d7d5 g1f3 g8f6 
D02 Queen's bishop game
d2d4 d7d5 g1f3 g8f6 c1f4 
D03 Torre attack (Tartakower variation)
d2d4 d7d5 g1f3 g8f6 c1g5 
D04 Queen's pawn game
d2d4 d7d5 g1f3 g8f6 e2e3 
D05 Queen's pawn game
d2d4 d7d5 g1f3 g8f6 e2e3 e7e6 
D05 Queen's pawn game, Zukertort variation
d2d4 d7d5 g1f3 g8f6 e2e3 e7e6 b1d2 c7c5 b2b3 
D05 Queen's pawn game
d2d4 d7d5 g1f3 g8f6 e2e3 e7e6 f1d3 
D05 Queen's pawn game, Rubinstein (Colle-Zukertort) variation
d2d4 d7d5 g1f3 g8f6 e2e3 e7e6 f1d3 c7c5 b2b3 
D05 Colle system
d2d4 d7d5 g1f3 g8f6 e2e3 e7e6 f1d3 c7c5 c2c3 
D06 Queen's Gambit
d2d4 d7d5 c2c4 
  Grau (Sahovic) defence
d2d4 d7d5 c2c4 c8f5 
  Marshall defence
d2d4 d7d5 c2c4 g8f6 
  symmetrical (Austrian) defence
d2d4 d7d5 c2c4 c7c5 
  Chigorin defence
d2d4 d7d5 c2c4 b8c6 
  Chigorin defence, Janowski variation
d2d4 d7d5 c2c4 b8c6 b1c3 d5c4 g1f3 
  Albin counter-gambit
d2d4 d7d5 c2c4 e7e5 
  Albin counter-gambit, Lasker trap
d2d4 d7d5 c2c4 e7e5 d4e5 d5d4 e2e3 f8b4 c1d2 d4e3 
  Albin counter-gambit
d2d4 d7d5 c2c4 e7e5 d4e5 d5d4 g1f3 
  Albin counter-gambit, Alapin variation
d2d4 d7d5 c2c4 e7e5 d4e5 d5d4 g1f3 b8c6 b1d2 
  Albin counter-gambit, Krenosz variation
d2d4 d7d5 c2c4 e7e5 d4e5 d5d4 g1f3 b8c6 b1d2 c8g4 h2h3 g4f3 d2f3 f8b4 c1d2 d8e7 
  Albin counter-gambit, Janowski variation
d2d4 d7d5 c2c4 e7e5 d4e5 d5d4 g1f3 b8c6 b1d2 f7f6 
  Albin counter-gambit, Balogh variation
d2d4 d7d5 c2c4 e7e5 d4e5 d5d4 g1f3 b8c6 b1d2 d8e7 
  Albin counter-gambit, 5.g3
d2d4 d7d5 c2c4 e7e5 d4e5 d5d4 g1f3 b8c6 g2g3 
D10 QGD Slav defence
d2d4 d7d5 c2c4 c7c6 
D10 QGD Slav defence, Alekhine variation
d2d4 d7d5 c2c4 c7c6 b1c3 d5c4 e2e4 
  Winawer counter-gambit
d2d4 d7d5 c2c4 c7c6 b1c3 e7e5 
  exchange variation
d2d4 d7d5 c2c4 c7c6 c4d5 
  3.Nf3
d2d4 d7d5 c2c4 c7c6 g1f3 
  Breyer variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1d2 
  4.e3
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 e2e3 
  4.e3 Bf5
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 e2e3 c8f5 
  Landau variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 e2e3 c8f5 c4d5 c6d5 d1b3 d8c8 c1d2 e7e6 b1a3 
  exchange variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 e2e3 c8f5 c4d5 c6d5 b1c3 
  Amsterdam variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 e2e3 c8f5 c4d5 c6d5 b1c3 e7e6 f3e5 f6d7 
  exchange variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 c4d5 c6d5 
  exchange variation, 6.Bf4 Bf5
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 c4d5 c6d5 b1c3 b8c6 c1f4 c8f5 
  exchange, Trifunovic variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 c4d5 c6d5 b1c3 b8c6 c1f4 c8f5 e2e3 e7e6 d1b3 f8b4 
  4.Nc3
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 
  Suechting variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d8b6 
  Schlechter variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 g7g6 
D15 QGD Slav accepted
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 
  5.e3 (Alekhine variation)
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 e2e3 
  Slav gambit
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 e2e4 
  Tolush-Geller gambit
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 e2e4 b7b5 e4e5 
  Alapin variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 
  Smyslov variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 b8a6 e2e4 c8g4 
  Soultanbeieff variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 e7e6 
  Steiner variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8g4 
  Czech defence
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 
  Krause attack
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 f3e5 
  Carlsbad variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 f3e5 b8d7 e5c4 d8c7 g2g3 e7e5 
  Wiesbaden variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 f3e5 e7e6 
  Dutch variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 e2e3 
  Dutch, Lasker variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 e2e3 b8a6 
  Dutch variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 e2e3 e7e6 f1c4 f8b4 e1g1 
  Dutch variation, main line
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 e2e3 e7e6 f1c4 f8b4 e1g1 e8g8 d1e2 
  Dutch, Saemisch variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 e2e3 e7e6 f1c4 f8b4 e1g1 e8g8 d1e2 f6e4 g2g4 
D20 Queen's gambit accepted
d2d4 d7d5 c2c4 d5c4 
  3.e4
d2d4 d7d5 c2c4 d5c4 e2e4 
  Linares variation
d2d4 d7d5 c2c4 d5c4 e2e4 c7c5 d4d5 g8f6 b1c3 b7b5 
  Schwartz defence
d2d4 d7d5 c2c4 d5c4 e2e4 f7f5 
  3.Nf3
d2d4 d7d5 c2c4 d5c4 g1f3 
  Ericson variation
d2d4 d7d5 c2c4 d5c4 g1f3 b7b5 
  Alekhine defense, Borisenko-Furman variation
d2d4 d7d5 c2c4 d5c4 g1f3 a7a6 e2e4 
  Alekhine defence
d2d4 d7d5 c2c4 d5c4 g1f3 a7a6 
  Alekhine defence, Alatortsev variation
d2d4 d7d5 c2c4 d5c4 g1f3 a7a6 e2e3 c8g4 f1c4 e7e6 d4d5 
  Haberditz variation
d2d4 d7d5 c2c4 d5c4 g1f3 a7a6 e2e3 b7b5 
D23 Queen's gambit accepted
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 
  Mannheim variation
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 d1a4 
D24 QGA, 4.Nc3
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 b1c3 
D24 QGA, Bogolyubov variation
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 b1c3 a7a6 e2e4 
D25 QGA, 4.e3
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 
D25 QGA, Smyslov variation
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 g7g6 
D25 QGA, Janowsky-Larsen variation
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 c8g4 
D25 QGA, Flohr variation
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 c8e6 
  4...e6
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 
  classical variation
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 
  classical, Furman variation
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 d1e2 a7a6 d4c5 f8c5 e1g1 b8c6 e3e4 b7b5 e4e5 
  classical variation, 6.O-O
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 
  classical, Steinitz variation
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 c5d4 
  classical, 6...a6
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 a7a6 
  classical, Rubinstein variation
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 a7a6 a2a4 
  classical, Geller variation
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 a7a6 e3e4 
  classical, 7.Qe2
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 a7a6 d1e2 
  classical, 7...b5
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 a7a6 d1e2 b7b5 
  classical, Flohr variation
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 a7a6 d1e2 b7b5 c4b3 b8c6 f1d1 c5c4 b3c2 c6b4 b1c3 b4c2 e2c2 c8b7 d4d5 d8c7 
  classical, 8...Bb7
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 a7a6 d1e2 b7b5 c4b3 c8b7 
  classical, Smyslov variation
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 a7a6 d1e2 b7b5 c4b3 c8b7 f1d1 b8d7 b1c3 f8d6 
D30 Queen's gambit declined
d2d4 d7d5 c2c4 e7e6 
D30 QGD Slav
d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 e2e3 c7c6 b1d2 
  Stonewall variation
d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 e2e3 c7c6 b1d2 f6e4 f1d3 f7f5 
D30 QGD Slav
d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 e2e3 c7c6 b1d2 b8d7 
  Semmering variation
d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 e2e3 c7c6 b1d2 b8d7 f1d3 c6c5 
  Spielmann variation
d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 e2e3 c7c6 b1d2 g7g6 
D30 QGD
d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 c1g5 
  Capablanca variation
d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 c1g5 b8d7 e2e3 c7c6 b1d2 
  Vienna variation
d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 c1g5 f8b4 
  Capablanca-Duras variation
d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 c1g5 h7h6 
  Hastings variation
d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 c1g5 h7h6 g5f6 d8f6 b1c3 c7c6 d1b3 
  3.Nc3
d2d4 d7d5 c2c4 e7e6 b1c3 
  Janowski variation
d2d4 d7d5 c2c4 e7e6 b1c3 a7a6 
  Alapin variation
d2d4 d7d5 c2c4 e7e6 b1c3 b7b6 
  Charousek (Petrosian) variation
d2d4 d7d5 c2c4 e7e6 b1c3 f8e7 
  semi-Slav
d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 
  semi-Slav, Noteboom variation
d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 g1f3 d5c4 
  semi-Slav, Koomen variation
d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 g1f3 d5c4 a2a4 f8b4 e2e3 b7b5 c1d2 d8e7 
  semi-Slav, Junge variation
d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 g1f3 d5c4 a2a4 f8b4 e2e3 b7b5 c1d2 d8b6 
  semi-Slav, Abrahams variation
d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 g1f3 d5c4 a2a4 f8b4 e2e3 b7b5 c1d2 a7a5 
  semi-Slav, Marshall gambit
d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 e2e4 
  Tarrasch defence
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 
  Tarrasch, von Hennig-Schara gambit
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 c5d4 
  Tarrasch defence, 4.cd ed
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 
  Tarrasch defence, Tarrasch gambit
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 d4c5 d5d4 c3a4 b7b5 
  Tarrasch defence, Marshall gambit
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 e2e4 
  Tarrasch defence
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 
  Tarrasch, Schlechter-Rubinstein system
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 
  Tarrasch, Folkestone (Swedish) variation
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 c5c4 
  Tarrasch, Schlechter-Rubinstein system, Rey Ardid variation
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 c5c4 e2e4 
  Tarrasch, Prague variation
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 
  Tarrasch, Wagner variation
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 c8g4 
  Tarrasch, Prague variation, 7...Be7
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 f8e7 
  Tarrasch, Prague variation, Normal position
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 f8e7 e1g1 e8g8 
  Tarrasch, Reti variation
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 f8e7 e1g1 e8g8 d4c5 e7c5 c3a4 
  Tarrasch, Prague variation, 9.Bg5
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 f8e7 e1g1 e8g8 c1g5 
  Tarrasch, Bogolyubov variation
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 f8e7 e1g1 e8g8 c1g5 c8e6 a1c1 c5c4 
  Tarrasch, Stoltz variation
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 f8e7 e1g1 e8g8 c1g5 c8e6 a1c1 b7b6 
  3...Nf6
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 
  Harrwitz attack
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1f4 
  exchange variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c4d5 
  exchange, Saemisch variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c4d5 e6d5 g1f3 b8d7 c1f4 
  exchange, positional line
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c4d5 e6d5 c1g5 
  exchange, chameleon variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c4d5 e6d5 c1g5 f8e7 e2e3 e8g8 f1d3 b8d7 d1c2 f8e8 g1e2 d7f8 e1c1 
  exchange, positional line, 5...c6
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c4d5 e6d5 c1g5 c7c6 
  exchange, positional line, 6.Qc2
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c4d5 e6d5 c1g5 c7c6 d1c2 
  4.Nf3
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 
  classical variation (5.Bf4)
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 f8e7 c1f4 
  Ragozin variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 f8b4 
  Ragozin, Vienna variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 f8b4 c1g5 d5c4 
  Semi-Tarrasch defence
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c5 
  Semi-Tarrasch, symmetrical variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c5 e2e3 b8c6 f1d3 f8d6 e1g1 e8g8 
  Semi-Tarrasch, Levenfish variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c5 e2e3 b8c6 f1d3 f8d6 e1g1 e8g8 d1e2 d8e7 d4c5 d6c5 e3e4 
  Semi-Tarrasch defence, Pillsbury variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c5 c1g5 
  Semi-Tarrasch, 5.cd
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c5 c4d5 
  Semi-Tarrasch, Kmoch variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c5 c4d5 f6d5 e2e4 d5c3 b2c3 c5d4 c3d4 f8b4 c1d2 b4d2 d1d2 e8g8 f1b5 
  Semi-Tarrasch, San Sebastian variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c5 c4d5 f6d5 e2e4 d5c3 b2c3 c5d4 c3d4 f8b4 c1d2 d8a5 
  Semi-Tarrasch with e3
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c5 c4d5 f6d5 e2e3 
  Semi-Tarrasch, 7.Bd3
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c5 c4d5 f6d5 e2e3 b8c6 f1d3 
D43 QGD semi-Slav
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 
  Hastings variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 c1g5 h7h6 g5f6 d8f6 d1b3 
  5.Bg5 dc
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 c1g5 d5c4 
  Botvinnik system (anti-Meran)
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 c1g5 d5c4 e2e4 
  Ekstrom variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 c1g5 d5c4 e2e4 b7b5 e4e5 h7h6 g5h4 g7g5 e5f6 g5h4 f3e5 
  anti-Meran gambit
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 c1g5 d5c4 e2e4 b7b5 e4e5 h7h6 g5h4 g7g5 f3g5 
  anti-Meran, Lilienthal variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 c1g5 d5c4 e2e4 b7b5 e4e5 h7h6 g5h4 g7g5 f3g5 h6g5 h4g5 b8d7 g2g3 
  anti-Meran, Szabo variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 c1g5 d5c4 e2e4 b7b5 e4e5 h7h6 g5h4 g7g5 f3g5 h6g5 h4g5 b8d7 d1f3 
  anti-Meran, Alatortsev system
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 c1g5 d5c4 e2e4 b7b5 e4e5 h7h6 g5h4 g7g5 f3g5 f6d5 
  5.e3
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 
  stonewall defence
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 f6e4 f1d3 f7f5 
  accelerated Meran (Alekhine variation)
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 a7a6 
  5...Nd7
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 
  Stoltz variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 d1c2 
  Rubinstein (anti-Meran) system
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f3e5 
  6.Bd3
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 
  Bogolyubov variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 f8e7 
  Romih variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 f8b4 
  Chigorin defence
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 f8d6 
  7.Bc4
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 
  Meran variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 
  neo-Meran (Lundin variation)
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 b5b4 
  Meran, Wade variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 c8b7 
  Meran, 8...a6
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 
  Meran, Pirc variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 b5b4 
  Meran
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 
  Meran, Reynolds' variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 d4d5 
  Meran, old main line
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 e4e5 
  Meran, Blumenfeld variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 e4e5 c5d4 c3b5 
  Meran, Rabinovich variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 e4e5 c5d4 c3b5 f6g4 
  Meran, Sozin variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 e4e5 c5d4 c3b5 d7e5 
  Meran, Stahlberg variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 e4e5 c5d4 c3b5 d7e5 f3e5 a6b5 d1f3 
  Meran, Sozin variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 e4e5 c5d4 c3b5 d7e5 f3e5 a6b5 e1g1 
  Meran, Rellstab attack
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 e4e5 c5d4 c3b5 d7e5 f3e5 a6b5 e1g1 d8d5 d1e2 c8a6 c1g5 
  4.Bg5
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 
  Been-Koomen variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 c7c5 
  Semi-Tarrasch, Krause variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 c7c5 g1f3 c5d4 f3d4 e6e5 d4b5 a7a6 d1a4 
  Semi-Tarrasch, Primitive Pillsbury variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 c7c5 g1f3 c5d4 d1d4 
  Semi-Tarrasch
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 c7c5 c4d5 
  Canal (Venice) variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 c7c5 c4d5 d8b6 
  4.Bg5 Nbd7
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 
  Rochlin variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 g1f3 c7c6 a1c1 d8a5 g5d2 
  Alekhine variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 g1f3 c7c6 e2e4 
D51 QGD
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 
  Manhattan variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 f8b4 
  5...c6
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 c7c6 
  Capablanca anti-Cambridge Springs variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 c7c6 a2a3 
D52 QGD
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 c7c6 g1f3 
  Cambridge Springs defence
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 c7c6 g1f3 d8a5 
  Cambridge Springs defence, Bogoljubow variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 c7c6 g1f3 d8a5 f3d2 f8b4 d1c2 
  Cambridge Springs defence, Argentine variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 c7c6 g1f3 d8a5 f3d2 f8b4 d1c2 e8g8 g5h4 
  Cambridge Springs defence, Rubinstein variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 c7c6 g1f3 d8a5 f3d2 d5c4 
  Cambridge Springs defence, Capablanca variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 c7c6 g1f3 d8a5 g5f6 
  Cambridge Springs defence, 7.cd
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 c7c6 g1f3 d8a5 c4d5 
  Cambridge Springs defence, Yugoslav variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 c7c6 g1f3 d8a5 c4d5 f6d5 
  4.Bg5 Be7
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 
  Lasker variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 f6e4 
  4.Bg5 Be7, 5.e3 O-O
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 
  Anti-neo-orthodox variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 a1c1 
  6.Nf3
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 
  Pillsbury attack
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b7b6 f1d3 c8b7 c4d5 e6d5 f3e5 
  Neo-orthodox variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 
  Neo-orthodox variation, 7.Bxf6
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 g5f6 
  Petrosian variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 g5f6 e7f6 a1c1 c7c6 f1d3 b8d7 e1g1 d5c4 d3c4 
  Neo-orthodox variation, 7.Bh4
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 g5h4 
  Lasker defence
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 g5h4 f6e4 
  Lasker defence, Teichmann variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 g5h4 f6e4 h4e7 d8e7 d1c2 
  Lasker defence, Russian variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 g5h4 f6e4 h4e7 d8e7 d1c2 e4f6 f1d3 d5c4 d3c4 c7c5 e1g1 b8c6 f1d1 c8d7 
  Lasker defence, main line
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 g5h4 f6e4 h4e7 d8e7 c4d5 e4c3 b2c3 
  Lasker defence, Bernstein variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 g5h4 f6e4 h4e7 d8e7 c4d5 e4c3 b2c3 e6d5 d1b3 e7d6 
  Tartakower (Makagonov-Bondarevsky) system
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 g5h4 b7b6 
  Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd5
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 g5h4 b7b6 c4d5 f6d5 
  Tartakower variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 g5h4 b7b6 c4d5 f6d5 h4e7 d8e7 c3d5 e6d5 a1c1 c8e6 
  Orthodox defence
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 
  Orthodox defence, Botvinnik variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 f1d3 
  Orthodox defence, Rauzer variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 d1b3 
  Orthodox defence, Rubinstein variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 d1c2 
  Orthodox defence, 7.Qc2 c5, 8.cd (Rubinstein)
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 d1c2 c7c5 c4d5 
  Orthodox defence, 7.Rc1
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 
  Orthodox defence, Pillsbury attack
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 b7b6 c4d5 e6d5 f1d3 
  Orthodox defence, Capablanca variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 b7b6 c4d5 e6d5 f1b5 
  Orthodox defence, Swiss (Henneberger) variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 a7a6 
  Orthodox defence, Swiss, Karlsbad variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 a7a6 c4d5 
  Orthodox defence
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 
  Orthodox defence, Rubinstein attack (with Rc1)
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 d1c2 
  Orthodox defence, Rubinstein attack, Wolf variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 d1c2 f6e4 
  Orthodox defence, Rubinstein attack, Karlsbad variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 d1c2 a7a6 
  Orthodox defence, Rubinstein attack, Gruenfeld variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 d1c2 a7a6 a2a3 
  Orthodox defence, Rubinstein attack, main line
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 d1c2 a7a6 c4d5 
  Orthodox defence, Bd3 line
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 
  Orthodox defence, Bd3 line, fianchetto variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 b7b5 
  Orthodox defence, Bd3 line, Capablanca freeing manoevre
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 
  Orthodox defence, Bd3 line, Janowski variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 h2h4 
  Orthodox defence, Bd3 line
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 g5e7 d8e7 
  Orthodox defence, Bd3 line, Alekhine variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 g5e7 d8e7 c3e4 
  Orthodox defence, Bd3 line, 11.O-O
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 g5e7 d8e7 e1g1 
  Orthodox defence, classical variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 g5e7 d8e7 e1g1 d5c3 c1c3 e6e5 
  Orthodox defence, classical, 13.d1b1 (Maroczy)
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 g5e7 d8e7 e1g1 d5c3 c1c3 e6e5 d1b1 
  Orthodox defence, classical, 13.d1c2 (Vidmar)
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 g5e7 d8e7 e1g1 d5c3 c1c3 e6e5 d1c2 
  Orthodox defence, classical, 13.de
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 g5e7 d8e7 e1g1 d5c3 c1c3 e6e5 d4e5 d7e5 f3e5 e7e5 
D70 Neo-Gruenfeld defence
d2d4 g8f6 c2c4 g7g6 f2f3 d7d5 
D70 Neo-Gruenfeld (Kemeri) defence
d2d4 g8f6 c2c4 g7g6 g2g3 d7d5 
D71 Neo-Gruenfeld, 5.cd
d2d4 g8f6 c2c4 g7g6 g2g3 d7d5 f1g2 f8g7 c4d5 f6d5 
D72 Neo-Gruenfeld, 5.cd, main line
d2d4 g8f6 c2c4 g7g6 g2g3 d7d5 f1g2 f8g7 c4d5 f6d5 e2e4 d5b6 g1e2 
D73 Neo-Gruenfeld, 5.Nf3
d2d4 g8f6 c2c4 g7g6 g2g3 d7d5 f1g2 f8g7 g1f3 
D74 Neo-Gruenfeld, 6.cd Nxd5, 7.O-O
d2d4 g8f6 c2c4 g7g6 g2g3 d7d5 f1g2 f8g7 g1f3 e8g8 c4d5 f6d5 e1g1 
D75 Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc3
d2d4 g8f6 c2c4 g7g6 g2g3 d7d5 f1g2 f8g7 g1f3 e8g8 c4d5 f6d5 e1g1 c7c5 b1c3 
D75 Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.dc
d2d4 g8f6 c2c4 g7g6 g2g3 d7d5 f1g2 f8g7 g1f3 e8g8 c4d5 f6d5 e1g1 c7c5 d4c5 
D76 Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb6
d2d4 g8f6 c2c4 g7g6 g2g3 d7d5 f1g2 f8g7 g1f3 e8g8 c4d5 f6d5 e1g1 d5b6 
D77 Neo-Gruenfeld, 6.O-O
d2d4 g8f6 c2c4 g7g6 g2g3 d7d5 f1g2 f8g7 g1f3 e8g8 e1g1 
D78 Neo-Gruenfeld, 6.O-O c6
d2d4 g8f6 c2c4 g7g6 g2g3 d7d5 f1g2 f8g7 g1f3 e8g8 e1g1 c7c6 
D79 Neo-Gruenfeld, 6.O-O, main line
d2d4 g8f6 c2c4 g7g6 g2g3 d7d5 f1g2 f8g7 g1f3 e8g8 e1g1 c7c6 c4d5 c6d5 
D80 Gruenfeld defence
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 
  Spike gambit
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g2g4 
  Stockholm variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c1g5 
  Lundin variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c1g5 f6e4 c3e4 d5e4 d1d2 c7c5 
  Russian variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 d1b3 
  4.Bf4
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c1f4 
  Gruenfeld gambit
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c1f4 f8g7 e2e3 e8g8 
  Gruenfeld gambit, Capablanca variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c1f4 f8g7 e2e3 e8g8 a1c1 
  Gruenfeld gambit, Botvinnik variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c1f4 f8g7 e2e3 e8g8 a1c1 c7c5 d4c5 c8e6 
  Gruenfeld gambit accepted
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c1f4 f8g7 e2e3 e8g8 c4d5 f6d5 c3d5 d8d5 f4c7 
  exchange variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 
  modern exchange variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 g1f3 
  exchange, classical variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 
  exchange, Larsen variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 e8g8 g1e2 d8d7 e1g1 b7b6 
  exchange, Simagin's lesser variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 e8g8 g1e2 b7b6 
  exchange, Simagin's improved variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 e8g8 g1e2 b8c6 
  exchange, Spassky variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 e8g8 g1e2 c7c5 
  exchange, Seville variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 e8g8 g1e2 c7c5 e1g1 b8c6 c1e3 c8g4 f2f3 c6a5 c4f7 
  Spassky variation, main line, 10...cd, 11.cd
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 e8g8 g1e2 c7c5 e1g1 b8c6 c1e3 c5d4 c3d4 
  Spassky variation, main line, 13.Bd3
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 e8g8 g1e2 c7c5 e1g1 b8c6 c1e3 c5d4 c3d4 c8g4 f2f3 c6a5 c4d3 g4e6 
  exchange, Sokolsky variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 e8g8 g1e2 c7c5 e1g1 b8c6 c1e3 c5d4 c3d4 c8g4 f2f3 c6a5 c4d3 g4e6 d4d5 
  Three knights variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 
  Schlechter variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 c7c6 
  Three knights variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 
  Flohr variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1a4 
  5.Bg5
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 c1g5 
  5.Bf4
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 c1f4 
D93 Gruenfeld with Bf4    e3
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 c1f4 e8g8 e2e3 
  5.e3
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 e2e3 
  Makogonov variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 e2e3 e8g8 b2b4 
  Opovcensky variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 e2e3 e8g8 c1d2 
D94 Gruenfeld with e3    Bd3
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 e2e3 e8g8 f1d3 
  Smyslov defence
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 e2e3 e8g8 f1d3 c7c6 e1g1 c8g4 
  Flohr defence
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 e2e3 e8g8 f1d3 c7c6 e1g1 c8f5 
D95 Gruenfeld with e3 & Qb3
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 e2e3 e8g8 d1b3 
  Botvinnik variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 e2e3 e8g8 d1b3 e7e6 
  Pachman variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 e2e3 e8g8 d1b3 d5c4 f1c4 b8d7 f3g5 
  Russian variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 
  Russian variation with e4
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 
  Russian, Alekhine (Hungarian) variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 a7a6 
  Russian, Szabo (Boleslavsky) variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 c7c6 
  Russian, Levenfish variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 b7b6 
  Russian, Byrne (Simagin) variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 b8c6 
  Russian, Prins variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 b8a6 
  Russian, Smyslov variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 c8g4 
  Russian, Keres variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 c8g4 c1e3 f6d7 f1e2 d7b6 c4d3 b8c6 e1c1 
  Smyslov, main line
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 c8g4 c1e3 f6d7 c4b3 
  Smyslov, Yugoslav variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 c8g4 c1e3 f6d7 c4b3 c7c5 
E00 Queen's pawn game
d2d4 g8f6 c2c4 e7e6 
E00 Neo-Indian (Seirawan) attack
d2d4 g8f6 c2c4 e7e6 c1g5 
E00 Catalan opening
d2d4 g8f6 c2c4 e7e6 g2g3 
  closed
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 
  open, 5.Qa4
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 d5c4 d1a4 
  open, Alekhine variation
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 d5c4 d1a4 b8d7 a4c4 a7a6 c4c2 
  open, 5.Qa4 Nbd7, 6.Qxc4
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 d5c4 d1a4 b8d7 a4c4 
  open, 5.Nf3
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 d5c4 g1f3 
  open, classical line
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 d5c4 g1f3 f8e7 
  closed, 5.Nf3
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 f8e7 g1f3 
  closed, 6...Nbd7
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 f8e7 g1f3 e8g8 e1g1 b8d7 
  closed, Botvinnik variation
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 f8e7 g1f3 e8g8 e1g1 b8d7 b1c3 c7c6 d1d3 
  closed, 7.Qc2
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 f8e7 g1f3 e8g8 e1g1 b8d7 d1c2 
  closed, Zagoryansky variation
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 f8e7 g1f3 e8g8 e1g1 b8d7 d1c2 c7c6 f1d1 b7b6 a2a4 
  closed, Qc2 & b3
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 f8e7 g1f3 e8g8 e1g1 b8d7 d1c2 c7c6 b2b3 
  closed, Spassky gambit
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 f8e7 g1f3 e8g8 e1g1 b8d7 d1c2 c7c6 b2b3 b7b6 f1d1 c8b7 b1c3 b6b5 
  closed, main line
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 f8e7 g1f3 e8g8 e1g1 b8d7 d1c2 c7c6 b1d2 
  closed, Sokolsky variation
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 f8e7 g1f3 e8g8 e1g1 b8d7 d1c2 c7c6 b1d2 b7b6 b2b3 a7a5 c1b2 c8a6 
E10 Queen's pawn game
d2d4 g8f6 c2c4 e7e6 g1f3 
E10 Blumenfeld counter-gambit
d2d4 g8f6 c2c4 e7e6 g1f3 c7c5 d4d5 b7b5 
E10 Blumenfeld counter-gambit accepted
d2d4 g8f6 c2c4 e7e6 g1f3 c7c5 d4d5 b7b5 d5e6 f7e6 c4b5 d7d5 
E10 Blumenfeld counter-gambit, Dus-Chotimursky variation
d2d4 g8f6 c2c4 e7e6 g1f3 c7c5 d4d5 b7b5 c1g5 
E10 Blumenfeld counter-gambit, Spielmann variation
d2d4 g8f6 c2c4 e7e6 g1f3 c7c5 d4d5 b7b5 c1g5 e6d5 c4d5 h7h6 
E10 Dzindzikhashvili defence
d2d4 g8f6 c2c4 e7e6 g1f3 a7a6 
E10 Doery defence
d2d4 g8f6 c2c4 e7e6 g1f3 f6e4 
E11 Bogo-Indian defence
d2d4 g8f6 c2c4 e7e6 g1f3 f8b4 
E11 Bogo-Indian defence, Gruenfeld variation
d2d4 g8f6 c2c4 e7e6 g1f3 f8b4 b1d2 
E11 Bogo-Indian defence, Nimzovich variation
d2d4 g8f6 c2c4 e7e6 g1f3 f8b4 c1d2 d8e7 
E11 Bogo-Indian defence, Monticelli trap
d2d4 g8f6 c2c4 e7e6 g1f3 f8b4 c1d2 b4d2 d1d2 b7b6 g2g3 c8b7 f1g2 e8g8 b1c3 f6e4 d2c2 e4c3 f3g5 
E12 Queen's Indian defence
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 
  Miles variation
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 c1f4 
  Petrosian system
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 a2a3 
  4.Nc3
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 b1c3 
  4.Nc3, Botvinnik variation
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 b1c3 c8b7 c1g5 h7h6 g5h4 g7g5 h4g3 f6h5 
  4.Nc3, main line
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 b1c3 c8b7 c1g5 h7h6 g5h4 f8b4 
  4.e3
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 e2e3 
  Averbakh variation
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 e2e3 c8b7 f1d3 c7c5 e1g1 f8e7 b2b3 e8g8 c1b2 c5d4 f3d4 
  4.g3
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 
  Nimzovich variation (exaggerated fianchetto)
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8a6 
  4.g3 Bb7
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 
  Rubinstein variation
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 c7c5 d4d5 e6d5 f3h4 
  Buerger variation
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 c7c5 d4d5 e6d5 f3g5 
  Capablanca variation
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8b4 
  Yates variation
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8b4 c1d2 a7a5 
  Riumin variation
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8b4 c1d2 b4e7 
  5.Bg2 Be7
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7 
  anti-Queen's Indian system
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7 b1c3 
  Opovcensky variation
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7 b1c3 f6e4 c1d2 
  old main line, 6.O-O
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7 e1g1 
  Euwe variation
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7 e1g1 e8g8 b2b3 
  old main line, 7.Nc3
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7 e1g1 e8g8 b1c3 
  old main line, 9.Qxc3
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7 e1g1 e8g8 b1c3 f6e4 d1c2 e4c3 c2c3 
E20 Nimzo-Indian defence
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 
  Kmoch variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 f2f3 
  Mikenas attack
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1d3 
  Romanishin-Kasparov (Steiner) system
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 g2g3 
  three knights variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 g1f3 
  three knights, Korchnoi variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 g1f3 c7c5 d4d5 
  three knights, Euwe variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 g1f3 c7c5 d4d5 f6e4 
  Spielmann variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1b3 
  Spielmann, 4...c5, 5.dc Nc6
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1b3 c7c5 d4c5 b8c6 
  Spielmann, Karlsbad variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1b3 c7c5 d4c5 b8c6 g1f3 f6e4 c1d2 e4d2 
  Spielmann, San Remo variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1b3 c7c5 d4c5 b8c6 g1f3 f6e4 c1d2 e4c5 
  Spielmann, Staahlberg variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1b3 c7c5 d4c5 b8c6 g1f3 f6e4 c1d2 e4c5 b3c2 f7f5 g2g3 
  Saemisch variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3 
  Saemisch, Botvinnik variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3 c7c5 f2f3 d7d5 e2e3 e8g8 c4d5 f6d5 
  Saemisch variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3 c7c5 f2f3 d7d5 c4d5 
  Saemisch, Keres variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3 c7c5 f2f3 d7d5 c4d5 f6d5 d4c5 
  Saemisch, Romanovsky variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3 c7c5 f2f3 d7d5 c4d5 f6d5 d4c5 f7f5 
  Saemisch variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3 c7c5 e2e3 
  Saemisch, O'Kelly variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3 c7c5 e2e3 b7b6 
  Saemisch variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3 e8g8 
  Saemisch variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3 e8g8 e2e3 
  Saemisch, main line
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3 e8g8 e2e3 c7c5 f1d3 b8c6 
  Saemisch, Capablanca variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3 e8g8 e2e3 c7c5 f1d3 b8c6 g1e2 b7b6 e3e4 f6e8 
  Leningrad variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 c1g5 
  Leningrad, ...b5 gambit
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 c1g5 h7h6 g5h4 c7c5 d4d5 b7b5 
  Leningrad, main line
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 c1g5 h7h6 g5h4 c7c5 d4d5 d7d6 
  classical variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 
  classical, Adorjan gambit
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 e8g8 a2a3 b4c3 c2c3 b7b5 
  classical, 4...Nc6
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 b8c6 
  classical, Milner-Barry (Zurich) variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 b8c6 g1f3 d7d6 
  classical, Noa variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5 
  classical, Noa variation, 5.cd ed
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5 c4d5 e6d5 
  classical, Noa variation, 5.a3
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5 a2a3 
  classical, Botvinnik variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5 a2a3 b4c3 c2c3 b8c6 
  classical, Noa variation, main line
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5 a2a3 b4c3 c2c3 f6e4 
  classical, Noa variation, main line, 7.Qc2
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5 a2a3 b4c3 c2c3 f6e4 c3c2 
  classical, San Remo variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5 a2a3 b4c3 c2c3 f6e4 c3c2 b8c6 e2e3 e6e5 
  classical, 4...c5
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 c7c5 
  classical, Pirc variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 c7c5 d4c5 e8g8 
  4.e3
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 
  4.e3, Taimanov variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 b8c6 
  4.e3 c5
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 c7c5 
  e3, Huebner variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 c7c5 f1d3 b8c6 g1f3 b4c3 b2c3 d7d6 
  4.e3 c5, 5.Ne2 (Rubinstein)
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 c7c5 g1e2 
  Fischer variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 b7b6 
  Fischer variation, 5.Ne2
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 b7b6 g1e2 
  4.e3, Bronstein (Byrne) variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 b7b6 g1e2 c8a6 
  4.e3 O-O
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 
  Reshevsky variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1e2 
  Simagin variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1e2 d7d5 a2a3 b4d6 
  4.e3 O-O, 5.Bd3
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 f1d3 
  4.e3 O-O, 5.Bd3 d5
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 f1d3 d7d5 
  4.e3, Botvinnik system
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 f1d3 d7d5 a2a3 b4c3 b2c3 
  4.e3 e8g8, 5.Nf3, without ...d5
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 
  4.e3 e8g8, 5.Nf3 d7d5
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 
  4.e3, Ragozin variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 f1d3 b8c6 e1g1 d5c4 
  4.e3, main line with ...b6
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 f1d3 b7b6 
  4.e3, main line with ...c5
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 f1d3 c7c5 
  4.e3, Keres variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 f1d3 c7c5 e1g1 b7b6 
  4.e3, Gligoric system with 7...Nbd7
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 f1d3 c7c5 e1g1 b8d7 
  4.e3, Gligoric system with 7...dc
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 f1d3 c7c5 e1g1 d5c4 d3c4 
  4.e3, Gligoric system, Smyslov variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 f1d3 c7c5 e1g1 d5c4 d3c4 d8e7 
  4.e3, Gligoric system, Bronstein variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 f1d3 c7c5 e1g1 d5c4 d3c4 b8d7 
  4.e3, main line with 7...Nc6
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 f1d3 c7c5 e1g1 b8c6 
  4.e3, main line with 8...dc and 9...cd
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 f1d3 c7c5 e1g1 b8c6 a2a3 d5c4 d3c4 c5d4 
  4.e3, main line with 8...Bxc3
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 f1d3 c7c5 e1g1 b8c6 a2a3 b4c3 b2c3 
  4.e3, main line
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 f1d3 c7c5 e1g1 b8c6 a2a3 b4c3 b2c3 d5c4 d3c4 
E60 King's Indian defence
d2d4 g8f6 c2c4 g7g6 
E60 King's Indian, 3.Nf3
d2d4 g8f6 c2c4 g7g6 g1f3 
  Mengarini attack
d2d4 g8f6 c2c4 g7g6 d1c2 
  Anti-Gruenfeld
d2d4 g8f6 c2c4 g7g6 d4d5 
  Danube gambit
d2d4 g8f6 c2c4 g7g6 d4d5 b7b5 
  3.g3
d2d4 g8f6 c2c4 g7g6 g2g3 
  3.g3, counterthrust variation
d2d4 g8f6 c2c4 g7g6 g2g3 f8g7 f1g2 d7d5 
E61 King's Indian defence, 3.Nc3
d2d4 g8f6 c2c4 g7g6 b1c3 
  Smyslov system
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 c1g5 
  fianchetto variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 
  fianchetto, Larsen system
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 c7c6 e1g1 c8f5 
  fianchetto, Kavalek (Bronstein) variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 c7c6 e1g1 d8a5 
  fianchetto with ...Nc6
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 b8c6 
  fianchetto, Uhlmann (Szabo) variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 b8c6 e1g1 e7e5 
  fianchetto, lesser Simagin (Spassky) variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 b8c6 e1g1 c8f5 
  fianchetto, Simagin variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 b8c6 e1g1 c8g4 
  fianchetto, Panno variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 b8c6 e1g1 a7a6 
  fianchetto, Yugoslav system
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 c7c5 
  fianchetto, Yugoslav, 7.O-O
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 c7c5 e1g1 
  fianchetto, Yugoslav Panno
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 c7c5 e1g1 b8c6 d4d5 
  fianchetto with ...Nd7
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 b8d7 
  fianchetto, classical variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 b8d7 e1g1 e7e5 
  fianchetto, classical variation, 8.e4
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 b8d7 e1g1 e7e5 e2e4 
  fianchetto, classical main line
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 b8d7 e1g1 e7e5 e2e4 c7c6 h2h3 
  4.e4
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 
  Kramer system
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1e2 
  accelerated Averbakh system
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 c1g5 
  Makagonov system (5.h3)
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 h2h3 
E72 King's Indian with e4 & g3
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g2g3 
  Pomar system
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g2g3 e8g8 f1g2 e7e5 g1e2 
  5.Be2
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f1e2 
  Semi-Averbakh system
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f1e2 e8g8 c1e3 
  Averbakh system
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f1e2 e8g8 c1g5 
  Averbakh, 6...c5
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f1e2 e8g8 c1g5 c7c5 
  Averbakh, main line
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f1e2 e8g8 c1g5 c7c5 d4d5 e7e6 
  Four pawns attack
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f4 
  Four pawns attack, dynamic line
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f4 e8g8 g1f3 c7c5 d4d5 
  Four pawns attack, 6.Be2
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f4 e8g8 f1e2 
  Six pawns attack
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f4 e8g8 f1e2 c7c5 d4d5 e7e6 d5e6 f7e6 g2g4 b8c6 h2h4 
  Four pawns attack
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f4 e8g8 f1e2 c7c5 d4d5 e7e6 g1f3 
  Four pawns attack, Florentine gambit
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f4 e8g8 f1e2 c7c5 d4d5 e7e6 g1f3 e6d5 e4e5 
  Four pawns attack, with Be2 and Nf3
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f4 e8g8 f1e2 c7c5 g1f3 
  Four pawns attack, main line
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f4 e8g8 f1e2 c7c5 g1f3 c5d4 f3d4 b8c6 c1e3 
  Saemisch variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 
  Saemisch, 5...O-O
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 
  Saemisch, Byrne variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 c7c6 f1d3 a7a6 
  Saemisch, double fianchetto variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 b7b6 
  Saemisch, 6...Nc6
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 b8c6 
  Saemisch, Ruban variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 b8c6 g1e2 a8b8 
  Saemisch, Panno formation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 b8c6 g1e2 a7a6 
  Saemisch, Panno main line
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 b8c6 g1e2 a7a6 d1d2 a8b8 
  Saemisch, orthodox variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 e7e5 
  Saemisch, orthodox, 7.Nge2 c6
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 e7e5 g1e2 c7c6 
  Saemisch, orthodox, 7.d5
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 e7e5 d4d5 
  Saemisch, orthodox, Bronstein variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 e7e5 d4d5 f6h5 d1d2 d8h4 g2g3 h5g3 d2f2 g3f1 f2h4 f1e3 e1e2 e3c4 
  Saemisch, orthodox, 7.d5 c6
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 e7e5 d4d5 c7c6 
  Saemisch, orthodox main line
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 e7e5 d4d5 c7c6 g1e2 c6d5 
  5.Nf3
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 
  Larsen variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 c1e3 
  Zinnowitz variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 c1g5 
  6.Be2
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 
  Kazakh variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 b8a6 
  classical variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 
  Andersson variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 d4e5 
  Gligoric-Taimanov system
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 c1e3 
  Petrosian system
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 d4d5 
  Petrosian system, Stein variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 d4d5 a7a5 
  Petrosian system, main line
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 d4d5 b8d7 
  Petrosian system, Keres variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 d4d5 b8d7 c1g5 h7h6 g5h4 g6g5 h4g3 f6h5 h2h4 
  orthodox variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 
  orthodox, Donner variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 c7c6 
  orthodox, 7...Nbd7
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 b8d7 
  orthodox, 7...Nbd7, 8.Re1
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 b8d7 f1e1 
  orthodox, 7...Nbd7, main line
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 b8d7 f1e1 c7c6 e2f1 a7a5 
  orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation)
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 b8c6 
  orthodox, Aronin-Taimanov, bayonet attack
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 b8c6 d4d5 c6e7 b2b4 
  orthodox, Aronin-Taimanov, 9.Ne1
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 b8c6 d4d5 c6e7 f3e1 
  orthodox, Aronin-Taimanov, main line
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 b8c6 d4d5 c6e7 f3e1 f6d7 f2f3 f7f5 
  orthodox, Aronin-Taimanov, Benko attack
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 b8c6 d4d5 c6e7 f3e1 f6d7 f2f3 f7f5 g2g4 
