ChessCrab All openings

Chess openings: moves, win rates and what people actually play

Every opening below is backed by real games — 4.0M rated Lichess games, both players 1600+, blitz and slower. Percentages are what actually happened at the board, not theory.

1,914 openings with enough games to say something useful.

ECO A

• Hungarian Opening 44k
• Van't Kruijs Opening 44k
• Mieses Opening 20k
• Polish Opening 18k
• Van Geet Opening 17k
• Grob Opening 11k
• Saragossa Opening 7791
• Hungarian Opening: Slav Formation 4615
• Polish Opening, with d5 3903
• Grob Opening: Grob Gambit 3783
• Mieses Opening: Reversed Rat 3702
• Hungarian Opening: Indian Defense 3402
• Hungarian Opening: Catalan Formation 3331
• Hungarian Opening: Sicilian Invitation 3180
• Anderssen's Opening 3014
• Van Geet Opening: Reversed Nimzowitsch 2817
• Hungarian Opening: Symmetrical Variation 2665
• Barnes Opening 2644
• Polish Opening: Czech Defense 2296
• Kádas Opening 2233
• Grob Opening: Grob Gambit, Fritz Gambit 1545
• Hungarian Opening: Reversed Modern Defense 1447
• Clemenz Opening 1413
• Ware Opening 1335
• Polish Opening: King's Indian Variation 1320
• Grob Opening: Grob Gambit Declined 1149
• Grob Opening: Spike, Hurst Attack 914
• Polish Opening: Outflank Variation 777
• Van Geet Opening: Dunst-Perrenet Gambit 662
• Polish Opening: Bugayev Attack 604
• Hungarian Opening: Dutch Defense 553
• Amar Opening 533
• Lasker Simul Special 502
• Polish Opening: Schiffler-Sokolsky Variation 488
• Polish Opening: Baltic Defense 432
• Van Geet Opening: Napoleon Attack 412
• Polish Opening: Birmingham Gambit 361
• Sodium Attack 309
• Valencia Opening 308
• Hungarian Opening: Reversed Alekhine 294
• Polish Opening: Bugayev Advance Variation 293
• Grob Opening: Spike Attack 262
• Polish Opening, with d5 235
• Polish Opening: Dutch Defense 231
• Global Opening 195
• Van Geet Opening: Sicilian Two Knights 176
• Creepy Crawly Formation: Classical Defense 171
• Barnes Opening: Hammerschlag 170
• Polish Opening: Symmetrical Variation 152
• Ware Opening: Crab Variation 114
• Polish Opening: King's Indian Variation, Schiffler Attack 112
• Polish Opening: Queen's Indian Variation 109
• Van Geet Opening: Reversed Scandinavian 106
• Van Geet Opening: Novosibirsk Variation 103
• Polish Opening: Queenside Defense 98
• Grob Opening: Keene Defense 96
• Polish Opening: Grigorian Variation 90
• Nimzo-Larsen Attack 46k
• Nimzo-Larsen Attack: Modern Variation 13k
• Nimzo-Larsen Attack: Classical Variation 13k
• Nimzo-Larsen Attack: Modern Variation 8086
• Nimzo-Larsen Attack: Indian Variation 6083
• Nimzo-Larsen Attack: Modern Variation 5493
• Nimzo-Larsen Attack: English Variation 2894
• Nimzo-Larsen Attack: Symmetrical Variation 1321
• Nimzo-Larsen Attack: Dutch Variation 476
• Nimzo-Larsen Attack: Modern Variation 270
• Nimzo-Larsen Attack: Spike Variation 225
• Nimzo-Larsen Attack: Graz Attack 124
• Nimzo-Larsen Attack: Polish Variation 93
• Bird Opening 50k
• Bird Opening: From's Gambit 4995
• Bird Opening: Schlechter Gambit 602
• Bird Opening: From's Gambit, Lasker Variation 538
• Bird Opening: Hobbs Gambit 169
• Bird Opening: Double Duck Formation 167
• Bird Opening: Lasker Gambit 123
• Bird Opening: Horsefly Defense 115
• Bird Opening: Wagner-Zwitersch Gambit 108
• Bird Opening: Dutch Variation 19k
• Bird Opening: Williams Gambit 969
• Bird Opening: Lasker Variation 445
• Bird Opening: Sturm Gambit 214
• Zukertort Opening 155k
• Zukertort Opening: Sicilian Invitation 16k
• Zukertort Opening: Queen's Gambit Invitation 11k
• Zukertort Opening: Black Mustang Defense 9226
• Zukertort Opening: Pirc Invitation 8109
• Zukertort Opening: Slav Invitation 7154
• Zukertort Opening: Kingside Fianchetto 6786
• Zukertort Opening: Queenside Fianchetto Variation 3623
• Zukertort Opening: Ross Gambit 3037
• Zukertort Opening: Dutch Variation 2995
• Zukertort Opening: Wade Defense 772
• Zukertort Opening: Vos Gambit 667
• Zukertort Opening: The Walrus 384
• Zukertort Opening: Lisitsyn Gambit 366
• Zukertort Opening: Arctic Defense 341
• Zukertort Opening: St. George Defense 330
• Zukertort Opening: Herrstrom Gambit 288
• Zukertort Opening: Polish Defense 252
• Zukertort Opening: Basman Defense 216
• Zukertort Opening: Lisitsyn Gambit Deferred 105
• Zukertort Opening: Ware Defense 103
• Zukertort Opening 31k
• King's Indian Attack 5660
• King's Indian Attack: Symmetrical Defense 4294
• Zukertort Opening: Nimzo-Larsen Variation 1970
• Zukertort Opening: Lemberger Gambit 1706
• Zukertort Opening: Quiet System 1274
• King's Indian Attack: Wahls Defense 447
• Zukertort Opening 262
• Polish Opening: Zukertort System 203
• King's Indian Attack: Spassky Variation 176
• Zukertort Opening 54k
• Zukertort Opening: Tennison Gambit 14k
• Zukertort Opening: Old Indian Attack 3298
• Nimzo-Larsen Attack: Classical Variation 2861
• Zukertort Opening: Reversed Mexican Defense 1046
• Zukertort Opening: Tennison Gambit, Brigg's Trap 240
• Zukertort Opening: Santasiere's Folly 191
• King's Indian Attack 14k
• King's Indian Attack, with e6 3687
• King's Indian Attack: Sicilian Variation 3366
• King's Indian Attack, with e6 1220
• King's Indian Attack, with Bf5 771
• King's Indian Attack: Keres Variation 696
• King's Indian Attack: Yugoslav Variation 504
• King's Indian Attack: Double Fianchetto 431
• King's Indian Attack: Omega-Delta Gambit 147
• King's Indian Attack: Keres Variation 101
• King's Indian Attack: Sicilian Variation 3371
• King's Indian Attack: French Variation 3044
• Zukertort Opening: Reversed Grünfeld 1162
• Zukertort Opening: Reversed Grünfeld 609
• Zukertort Opening: Reversed Grünfeld 474
• Zukertort Opening: Reversed Grünfeld 361
• King's Indian Attack: Sicilian Variation 216
• Réti Opening 10k
• Réti Opening: Advance Variation 2449
• Réti Opening: Réti Accepted 2174
• Réti Opening: Reversed Blumenfeld Gambit 281
• Réti Opening: Advance Variation, Michel Gambit 107
• English Opening 157k
• English Opening: Anglo-Scandinavian Defense 10k
• English Opening: Great Snake Variation 8683
• English Opening: Anglo-Dutch Defense 3662
• English Opening: Anglo-Lithuanian Variation 1638
• English Opening: Anglo-Scandinavian Defense, Malvinas Variation 1493
• English Opening: Anglo-Scandinavian Defense, Schulz Gambit 1248
• English Opening: Jaenisch Gambit 494
• English Opening: Anglo-Scandinavian Defense, Löhn Gambit 274
• English Opening: Myers Defense 119
• English Opening: Caro-Kann Defensive System 11k
• Réti Opening: Anglo-Slav Variation, Gurevich System 1355
• Réti Opening: Anglo-Slav Variation, with g3 945
• Réti Opening: Anglo-Slav Variation, with g3 277
• Réti Opening: Anglo-Slav Variation, Bogoljubow Variation 444
• English Opening: Agincourt Defense 19k
• English Opening: Agincourt Defense 3866
• English Opening: Agincourt Defense 3476
• English Opening: Neo-Catalan 1510
• English Opening: Neo-Catalan Declined 962
• English Opening: Agincourt Defense, Catalan Defense, Semi-Slav Defense 666
• English Opening: Agincourt Defense, Kurajica Defense 254
• English Opening: Agincourt Defense, Catalan Defense Accepted 199
• English Opening: Agincourt Defense, Bogoljubow Defense 102
• English Opening: Agincourt Defense, Neo-Catalan Declined 1110
• English Opening: Agincourt Defense, Neo-Catalan Declined 337
• English Opening: Anglo-Indian Defense 32k
• English Opening: Anglo-Indian Defense, King's Knight Variation 9387
• English Opening: Anglo-Indian Defense, King's Indian Formation 3635
• English Opening: Anglo-Indian Defense, Scandinavian Defense 1333
• English Opening: Anglo-Indian Defense, Old Indian Formation 862
• English Opening: Anglo-Indian Defense, Anti-Anti-Grünfeld 773
• English Opening: Anglo-Indian Defense, Scandinavian Defense, Exchange Variation 636
• English Opening: Anglo-Indian Defense, Queen's Indian Formation 289
• English Opening: Anglo-Indian Defense, Queen's Indian Formation 276
• English Orangutan 123
• English Opening: Anglo-Indian Defense, Queen's Knight Variation 19k
• English Opening: Anglo-Grünfeld Defense 1443
• English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation 368
• English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation 133
• English Opening: Anglo-Indian Defense, Hedgehog System 6531
• English Opening: Anglo-Indian Defense, Nimzo-English 169
• English Opening: Anglo-Indian Defense, Queen's Indian Formation 87
• English Opening: Mikenas-Carls Variation 2056
• English Opening: Mikenas-Carls Variation 501
• English Opening: Mikenas-Carls, Sicilian 371
• English Opening: Anglo-Indian Defense, Flohr-Mikenas-Carls Variation, Nei Gambit 112
• English Opening: King's English Variation 43k
• English Opening: King's English Variation, Nimzowitsch Variation 994
• English Opening: King's English Variation, Nimzowitsch-Flohr Variation 192
• English Opening: King's English Variation, Reversed Sicilian 27k
• English Opening: King's English Variation, Kramnik-Shirov Counterattack 1707
• English Opening: King's English Variation 941
• English Opening: King's English Variation, Keres Defense 218
• English Opening: King's English Variation, Troger Defense 122
• English Opening: King's English Variation, Two Knights Variation 12k
• English Opening: Carls-Bremen System 4912
• English Opening: King's English Variation, Two Knights Variation, Reversed Dragon 1084
• English Opening: King's English Variation, Two Knights Variation, Smyslov System 1013
• English Opening: King's English Variation, Two Knights Variation, Keres Variation 892
• English Opening: King's English Variation, Two Knights Variation, Keres Variation 270
• English Opening: King's English Variation, Reversed Closed Sicilian 5349
• English Opening: King's English Variation, Taimanov Variation 256
• English Opening: King's English Variation, Reversed Closed Sicilian 154
• English Opening: King's English Variation, Three Knights System 1891
• English Opening: King's English Variation, Four Knights Variation 2556
• English Opening: Four Knights System, Nimzowitsch Variation 566
• English Opening: King's English Variation, Four Knights Variation, Quiet Line 556
• English Opening: King's English Variation, Four Knights Variation, Flexible Line 276
• English Opening: King's English Variation, Four Knights Variation, Fianchetto Line 866
• English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with Nb6 230
• English Opening: King's English Variation, Four Knights Variation, Fianchetto Line 223
• English Opening: King's English Variation, Four Knights Variation, Fianchetto Line 111
• English Opening: Symmetrical Variation 18k
• English Opening: Symmetrical Variation 5989
• English Opening: Symmetrical Variation, Anti-Benoni Variation 2291
• English Opening: Symmetrical Variation, Anti-Benoni Variation, Spielmann Defense 149
• English Opening: Symmetrical Variation, Anti-Benoni Variation, Spielmann Defense 154
• English Opening: Symmetrical Variation, Normal Variation 11k
• English Opening: Symmetrical Variation, Three Knights Variation 1748
• English Opening: Symmetrical Variation, Fianchetto Variation 1150
• English Opening: Symmetrical Variation, Rubinstein Variation 204
• English Opening: Symmetrical Variation, Rubinstein Variation 121
• English Opening: Symmetrical Variation, Two Knights Variation 5949
• English Opening: Symmetrical Variation, Four Knights Variation 1285
• English Opening: Symmetrical Variation, Four Knights Variation, Keres-Parma System 117
• English Opening: Symmetrical Variation, Two Knights, Fianchetto Variation 2798
• English Opening: Symmetrical Variation, Ultra-Symmetrical Variation 1989
• English Opening: Symmetrical Variation, Botvinnik System 548
• English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation 1082
• English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation 205
• English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation 86
• English Opening: Symmetrical Variation, Full Symmetry Line 634
• English Opening: Symmetrical Variation, Mecking Variation 150
• Queen's Pawn Game 1.1M
• Horwitz Defense 98k
• Englund Gambit 53k
• Queen's Pawn Game: Modern Defense 47k
• English Defense 18k
• Englund Gambit: Hartlaub-Charlick Gambit 12k
• Englund Gambit: Main Line 7898
• Mikenas Defense 7325
• Englund Gambit Declined: Reversed French 5795
• Englund Gambit Declined 5458
• Queen's Pawn Game: Anglo-Slav Opening 3508
• English Defense 3103
• Englund Gambit Declined: Reversed Alekhine 2585
• Englund Gambit: Soller Gambit 2292
• Polish Defense 1930
• Englund Gambit Declined: Reversed Krebs 1613
• Englund Gambit: Felbecker Gambit 1183
• Englund Gambit: Stockholm Variation 950
• Mikenas Defense: Lithuanian Variation 897
• Kangaroo Defense 756
• Englund Gambit: Soller Gambit Deferred 551
• Englund Gambit: Zilbermints Gambit 488
• Kangaroo Defense: Keres Defense, Transpositional Variation 371
• Borg Defense: Borg Gambit 345
• Pterodactyl Defense: Queen Pterodactyl, Quiet Line 277
• Englund Gambit Declined: Reversed Brooklyn 245
• Englund Gambit Declined: Reversed Mokele Mbembe 217
• Montevideo Defense 145
• Modern Defense: Beefeater Variation 119
• Australian Defense 105
• Queen's Pawn Game 40k
• Old Indian Defense 15k
• Modern Defense 6359
• Rat Defense: English Rat 2808
• Queen's Pawn Game: Rossolimo Variation 1887
• Wade Defense 649
• Rat Defense: English Rat, Lisbon Gambit 430
• Robatsch Defense: Rossolimo Variation 114
• Modern Defense: Averbakh System 5985
• Modern Defense: Kotov Variation 1103
• Benoni Defense: Old Benoni 44k
• Benoni Defense: Old Benoni 18k
• Benoni Defense: Old Benoni 6948
• Benoni Defense: Benoni Gambit Accepted 6739
• Benoni Defense: French Benoni 4053
• Benoni Defense: Benoni-Indian Defense 3127
• Benoni Defense: Benoni-Indian Defense, Kingside Move Order 1450
• Indian Defense: Pseudo-Benko 344
• Benoni Defense: Old Benoni, Mujannah Formation 169
• Benoni Defense: Old Benoni, Schmid Variation 136
• Queen's Pawn Game: Liedmann Gambit 117
• Benoni Defense: Benoni Gambit, Schlenker Defense 108
• Benoni Defense: Cormorant Gambit 85
• Benoni Defense: Old Benoni 2338
• Benoni Defense: Semi-Benoni 537
• Indian Defense 283k
• Indian Defense: Accelerated London System 40k
• Queen's Pawn Game: Chigorin Variation 24k
• Trompowsky Attack 12k
• Trompowsky Attack: Classical Defense 2998
• Paleface Attack 1993
• Indian Defense: Tartakower Attack 1836
• Canard Opening 1686
• Indian Defense: Reversed Chigorin Defense 1509
• Trompowsky Attack: Classical Defense, Big Center Variation 1235
• Indian Defense: Omega Gambit 1184
• Trompowsky Attack: Edge Variation 865
• Queen's Pawn Game: Veresov, Richter Attack 734
• Indian Defense: Pawn Push Variation 588
• Indian Defense: Paleface Attack, Blackmar-Diemer Gambit Deferred 580
• Trompowsky Attack: Raptor Variation 529
• Basque Opening 393
• Indian Defense: Gibbins-Weidenhagen Gambit 218
• Indian Defense: Maddigan Gambit 177
• Trompowsky Attack: Borg Variation 152
• Indian Defense: Gibbins-Weidenhagen Gambit Accepted 142
• Amazon Attack: Siberian Attack 91
• Indian Defense: Knights Variation 63k
• Indian Defense: Wade-Tartakower Defense 8406
• Indian Defense: London System 5666
• Indian Defense: Spielmann-Indian 5499
• Yusupov-Rubinstein System 4647
• Torre Attack: Classical Defense 2855
• Queen's Pawn Game: Veresov Attack, Classical Defense 1228
• Indian Defense: Czech-Indian 991
• Torre Attack: Classical Defense, Nimzowitsch Variation 275
• Indian Defense: Polish Variation 115
• Pseudo Queen's Indian Defense 1347
• East Indian Defense 20k
• London System 5630
• London System 5313
• London System 4638
• Torre Attack: Fianchetto Defense 2183
• London System, with Bd3 960
• London System, with Be2 776
• Indian Defense: Colle System, King's Indian Variation 776
• London System, with Be2 662
• Queen's Pawn Game: Barry Attack 466
• Queen's Pawn Game: Barry Attack 378
• Queen's Pawn Game: Torre Attack, Grünfeld Variation, Main Line 92
• Indian Defense: Przepiorka Variation 2706
• Indian Defense: Normal Variation 127k
• Slav Indian 3121
• Queen's Indian Accelerated 1083
• Mexican Defense 942
• Indian Defense: Budapest Gambit 9607
• Indian Defense: Budapest Gambit Accepted 6025
• Indian Defense: Budapest Gambit Accepted, Fajarowicz Defense 780
• Indian Defense: Budapest Gambit Accepted, Fajarowicz Defense, Bonsdorf Variation 133
• Indian Defense: Budapest Gambit Accepted, Main Line 5206
• Indian Defense: Budapest Gambit Accepted, Main Line, Adler Variation 2742
• Indian Defense: Budapest Gambit Accepted, Main Line, Rubinstein Variation 1039
• Indian Defense: Budapest Gambit Accepted, Main Line, Alekhine Variation 481
• Indian Defense: Budapest Gambit Accepted, Main Line, Alekhine Variation, Abonyi Variation 385
• Old Indian Defense 12k
• Old Indian Defense: Czech Variation, with Nc3 1961
• Old Indian Defense: Czech Variation, with Nf3 668
• Old Indian Defense: Janowski Variation 390
• Old Indian Defense: Janowski Variation, Main Line 100
• Old Indian Defense: Ukrainian Variation 837
• Old Indian Defense: Two Knights Variation 327
• Old Indian Defense: Tartakower-Indian 118
• Old Indian Defense: Normal Variation 206
• Benoni Defense 15k
• Benoni Defense: Hromádka System 2345
• Benoni Defense: Czech Benoni Defense 637
• Benoni Defense: Weenink Variation 149
• Vulture Defense 118
• Benko Gambit 6309
• Benko Gambit Accepted 3553
• Benko Gambit: Zaitsev System 778
• Benko Gambit Accepted: Modern Variation 590
• Benko Gambit Accepted: Pawn Return Variation 428
• Benko Gambit Declined: Main Line 270
• Benko Gambit Declined: Quiet Line 114
• Benko Gambit Declined: Sosonko Variation 91
• Benko Gambit Accepted: Dlugy Variation 81
• Benko Gambit Accepted: Fully Accepted Variation 1676
• Benko Gambit Accepted: Yugoslav 291
• Benko Gambit 196
• Benko Gambit Accepted: King Walk Variation 159
• Benoni Defense: Modern Variation 3493
• Benoni Defense 674
• Benoni Defense: Knight's Tour Variation 94
• Benoni Defense: Fianchetto Variation 93
• Benoni Defense: Fianchetto Variation 185
• Benoni Defense: King's Pawn Line 2805
• Benoni Defense: Pawn Storm Variation 424
• Benoni Defense: Taimanov Variation 181
• Benoni Defense: Four Pawns Attack 88
• Benoni Defense: Classical Variation 544
• Benoni Defense: Classical Variation, New York Variation 126
• Benoni Defense: Classical Variation, Traditional Variation 90
• Dutch Defense 28k
• Dutch Defense: Raphael Variation 2791
• Dutch Defense: Hopton Attack 1450
• Queen's Pawn Game: Veresov Attack, Dutch System 340
• Dutch Defense: Korchnoi Attack 308
• Dutch Defense: Krejcik Gambit 222
• Dutch Defense: Barcza Variation 191
• Dutch Defense: Alapin Variation 158
• Dutch Defense: Janzen-Korchnoi Gambit 155
• Dutch Defense: Fianchetto Attack 1016
• Dutch Defense: Semi-Leningrad Variation 250
• Dutch Defense: Staunton Gambit 1724
• Dutch Defense: Staunton Gambit Accepted 1288
• Rat Defense: Balogh Defense 516
• Dutch Defense: Blackmar's Second Gambit 221
• Dutch Defense: Staunton Gambit 667
• Dutch Defense 9452
• Dutch Defense: Normal Variation 6992
• Dutch Defense: Classical Variation 4827
• Dutch Defense: Rubinstein Variation 3148
• Dutch Defense: Queen's Knight Variation 5299
• Dutch Defense: Fianchetto Variation 411
• Dutch Defense: Leningrad Variation 143
• Dutch Defense: Leningrad Variation 164
• Dutch Defense: Classical Variation 566
• Dutch Defense: Classical Variation 157
• Dutch Defense: Nimzo-Dutch Variation 96
• Dutch Defense: Classical Variation 159
• Dutch Defense: Classical Variation 167
• Dutch Defense: Classical Variation 121

ECO B

• King's Pawn Game 2.3M
• Pirc Defense 103k
• Pirc Defense 65k
• Owen Defense 43k
• Pirc Defense 36k
• Nimzowitsch Defense 34k
• Nimzowitsch Defense 13k
• Nimzowitsch Defense: Declined Variation 13k
• Nimzowitsch Defense: Kennedy Variation 12k
• Nimzowitsch Defense: Kennedy Variation, Linksspringer Variation 7863
• Rat Defense: Harmonist 5780
• St. George Defense 5374
• Nimzowitsch Defense: Scandinavian Variation 5338
• Nimzowitsch Defense: Scandinavian Variation, Exchange Variation 4287
• Nimzowitsch Defense: Scandinavian Variation, Advance Variation 4177
• Rat Defense: Antal Defense 4039
• Duras Gambit 3932
• Borg Defense 1907
• Nimzowitsch Defense: Williams Variation 1892
• Nimzowitsch Defense: Kennedy Variation, de Smet Gambit 1709
• Nimzowitsch Defense: Mikenas Variation 1404
• Ware Defense 1370
• Nimzowitsch Defense: Franco-Nimzowitsch Variation 1310
• Lion Defense: Lion's Jaw 1304
• Carr Defense 1298
• Barnes Defense 1215
• Goldsmith Defense 1176
• Nimzowitsch Defense: Colorado Countergambit 936
• Owen Defense: Smith Gambit 858
• Pirc Defense: Roscher Gambit 833
• Nimzowitsch Defense: Scandinavian Variation, Bogoljubow Variation 745
• Nimzowitsch Defense: Scandinavian Variation, Bogoljubow Variation 675
• Nimzowitsch Defense: Kennedy Variation, Paulsen Attack 565
• Nimzowitsch Defense: Colorado Countergambit Accepted 499
• Nimzowitsch Defense: Pseudo-Spanish Variation 482
• Nimzowitsch Defense: French Connection 462
• Nimzowitsch Defense: Kennedy Variation, Riemann Defense 368
• Owen Defense: Guatemala Defense 354
• Van Geet Opening: Berlin Gambit 345
• Borg Defense: Borg Gambit 343
• Nimzowitsch Defense: Kennedy Variation, Keres Attack 297
• Nimzowitsch Defense: Scandinavian Variation, Exchange Variation, Marshall Gambit 287
• Nimzowitsch Defense: Kennedy Variation, Main Line 277
• St. George Defense: Polish Variation 265
• Lemming Defense 212
• Fried Fox Defense 191
• Hippopotamus Defense 143
• Nimzowitsch Defense: Scandinavian Variation, Bogoljubow Variation, Vehre Variation 135
• Nimzowitsch Defense: Pirc Connection 106
• Nimzowitsch Defense: Scandinavian Variation, Bogoljubow Variation, Nimzowitsch Gambit 101
• Nimzowitsch Defense: El Columpio Defense 97
• Scandinavian Defense 216k
• Scandinavian Defense: Mieses-Kotroc Variation 106k
• Scandinavian Defense: Modern Variation 47k
• Scandinavian Defense: Main Line 29k
• Scandinavian Defense: Valencian Variation 27k
• Scandinavian Defense: Modern Variation 11k
• Scandinavian Defense: Blackburne-Kloosterboer Gambit 8047
• Scandinavian Defense: Gubinsky-Melts Defense 5758
• Scandinavian Defense: Marshall Variation 5651
• Scandinavian Defense: Main Line, Mieses Variation 4673
• Scandinavian Defense: Panov Transfer 4643
• Scandinavian Defense: Icelandic-Palme Gambit 4166
• Scandinavian Defense: Boehnke Gambit 3185
• Scandinavian Defense: Blackburne Gambit 3139
• Scandinavian Defense: Portuguese Gambit 2297
• Scandinavian Defense: Main Line, Leonhardt Gambit 1853
• Scandinavian Defense: Modern Variation, Gipslis Variation 1476
• Scandinavian Defense: Kloosterboer Gambit 1292
• Scandinavian Defense: Valencian Variation, Main Line 1134
• Scandinavian Defense: Portuguese Gambit, Wuss Variation 916
• Scandinavian Defense: Portuguese Gambit, Classical Variation 601
• Scandinavian Defense: Valencian Variation, Ilundain Variation 565
• Scandinavian Defense: Kiel Variation 510
• Scandinavian Defense: Classical Variation 478
• Scandinavian Defense: Richter Variation 444
• Scandinavian Defense: Lasker Variation 437
• Scandinavian Defense: Schiller-Pytel Variation 413
• Scandinavian Defense: Bronstein Variation 402
• Scandinavian Defense: Anderssen Counterattack 378
• Scandinavian Defense: Portuguese Gambit, Banker Variation 363
• Van Geet Opening: Grünfeld Defense 363
• Scandinavian Defense: Portuguese Gambit, Correspondence Refutation 145
• Scandinavian Defense: Kádas Gambit 85
• Scandinavian Defense 83
• Scandinavian Defense: Richter Variation 83
• Alekhine Defense 42k
• Alekhine Defense: Normal Variation 22k
• Alekhine Defense: Two Pawns Attack 8117
• Alekhine Defense: Scandinavian Variation 6814
• Alekhine Defense: Maróczy Variation 2968
• Alekhine Defense: Scandinavian Variation, Geschev Gambit 1633
• Alekhine Defense: Two Pawns Attack, Lasker Variation 1187
• Alekhine Defense: Sämisch Attack 1012
• Alekhine Defense: Brooklyn Variation 649
• Alekhine Defense: Krejcik Variation 519
• Alekhine Defense: Two Pawns Attack, Tate Variation 514
• Alekhine Defense: Mokele Mbembe 405
• Alekhine Defense: Hunt Variation, Lasker Simul Gambit 189
• Alekhine Defense: Mokele Mbembe, Vavra Defense 148
• Alekhine Defense: The Squirrel 112
• Alekhine Defense: Krejcik Variation, Krejcik Gambit 110
• Alekhine Defense: Steiner Variation 106
• Alekhine Defense: Spielmann Gambit 87
• Alekhine Defense 9826
• Alekhine Defense 7378
• Alekhine Defense: Exchange Variation 3618
• Alekhine Defense 3305
• Alekhine Defense: Four Pawns Attack 3076
• Alekhine Defense: Four Pawns Attack, Main Line 651
• Alekhine Defense: O'Sullivan Gambit 504
• Alekhine Defense: Balogh Variation 401
• Alekhine Defense: Four Pawns Attack, Fianchetto Variation 374
• Alekhine Defense: Four Pawns Attack, Trifunovic Variation 333
• Alekhine Defense: Modern Variation, Alekhine Gambit 109
• Alekhine Defense: Exchange Variation, Voronezh Variation 97
• Alekhine Defense: Modern Variation 2217
• Alekhine Defense: Modern Variation, Larsen Variation 509
• Alekhine Defense: Modern Variation, Alburt Variation 419
• Alekhine Defense: Modern Variation, Larsen-Haakert Variation 231
• Alekhine Defense: Modern Variation, Schmid Variation 168
• Alekhine Defense: Modern Variation, Main Line 903
• Alekhine Defense: Modern Variation, Panov Variation 82
• Modern Defense 72k
• Modern Defense 41k
• Modern Defense: Standard Line 11k
• Modern Defense: Standard Defense 8446
• Modern Defense: Two Knights Variation 6371
• Modern Defense: Three Pawns Attack 4445
• Modern Defense: Mongredien Defense, with Nf3 1551
• Modern Defense: Bishop Attack 1290
• Modern Defense: Pseudo-Austrian Attack 1264
• Modern Defense: Modern Pterodactyl 1041
• Modern Defense: Norwegian Defense 680
• Modern Defense: Two Knights Variation, Suttles Variation 581
• Rat Defense: Accelerated Gurgenidze 560
• Modern Defense: Mongredien Defense, with Nc3 542
• Pterodactyl Defense: Eastern, Anhanguera 308
• Pterodactyl Defense: Eastern, Benoni 290
• Modern Defense: Lizard Defense, Mittenberger Gambit 217
• Modern Defense: Wind Gambit 132
• Pirc Defense 18k
• King's Pawn Game: Maróczy Defense 6768
• Czech Defense 4761
• Lion Defense 3157
• Pirc Defense: Byrne Variation 2830
• Modern Defense: Geller's System 2194
• Pirc Defense: Kholmov System 1062
• Lion Defense: Anti-Philidor 655
• Lion Defense: Anti-Philidor, Lion's Cave 471
• Pirc Defense: Sveshnikov System 169
• Pirc Defense: Bayonet Attack 122
• Pirc Defense: 150 Attack 115
• Pirc Defense: Classical Variation 9545
• Pirc Defense: Classical Variation 7272
• Pirc Defense: Classical Variation, Schlechter Variation 1154
• Pirc Defense: Classical Variation, Quiet System 823
• Pirc Defense: Austrian Attack 3169
• Pirc Defense: Austrian Attack 1551
• Pirc Defense: Austrian Attack, Weiss Variation 607
• Pirc Defense: Austrian Attack, Unzicker Attack 291
• Pirc Defense: Austrian Attack, Dragon Formation 263
• Pirc Defense: Austrian Attack, Kurajica Variation 107
• Caro-Kann Defense 238k
• Caro-Kann Defense 18k
• Caro-Kann Defense 17k
• Caro-Kann Defense: Two Knights Attack 13k
• Caro-Kann Defense: Hillbilly Attack 10k
• Caro-Kann Defense: Accelerated Panov Attack 8022
• Caro-Kann Defense: Accelerated Panov Attack 6708
• Caro-Kann Defense: Breyer Variation 5800
• Caro-Kann Defense: Endgame Offer 3057
• Caro-Kann Defense: Accelerated Panov Attack, Modern Variation 2293
• Caro-Kann Defense: Dinic Gambit 1170
• Caro-Kann Defense: Euwe Attack 695
• Caro-Kann Defense: Endgame Variation 666
• Caro-Kann Defense: Goldman Variation 663
• Caro-Kann Defense: Apocalypse Attack 561
• Caro-Kann Defense: Accelerated Panov Attack, Open Variation 367
• Caro-Kann Defense: Hillbilly Attack, Schaeffer Gambit 249
• Caro-Kann Defense: Toikkanen Gambit 101
• Caro-Kann Defense: Two Knights Attack, Mindeno Variation 2961
• Caro-Kann Defense: Two Knights Attack, Mindeno Variation, Exchange Line 1027
• Caro-Kann Defense: Two Knights Attack, Mindeno Variation, Retreat Line 441
• Caro-Kann Defense 131k
• Caro-Kann Defense 124k
• Caro-Kann Defense: Advance Variation 44k
• Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense 14k
• Caro-Kann Defense: Advance Variation, Short Variation 7813
• Caro-Kann Defense: Modern Variation 6446
• Caro-Kann Defense: Maróczy Variation 5870
• Caro-Kann Defense: Advance Variation, Tal Variation 4370
• Caro-Kann Defense: Advance Variation, Bayonet Attack 2050
• Caro-Kann Defense: Advance Variation, Van der Wiel Attack 1682
• Caro-Kann Defense: Advance Variation, Bronstein Variation 527
• Caro-Kann Defense: Maróczy Variation, Maróczy Gambit 457
• Caro-Kann Defense: Ulysses Gambit 405
• Caro-Kann Defense: Masi Variation 215
• Caro-Kann Defense: Mieses Gambit 186
• Caro-Kann Defense: Advance Variation, Van der Wiel Attack 120
• Caro-Kann Defense: Exchange Variation 39k
• Caro-Kann Defense: Exchange Variation 39k
• Caro-Kann Defense: Exchange Variation 16k
• Caro-Kann Defense: Panov Attack 9619
• Caro-Kann Defense: Panov Attack 4352
• Caro-Kann Defense: Panov Attack, Modern Defense 1952
• Caro-Kann Defense: Exchange Variation, Rubinstein Variation 1923
• Caro-Kann Defense: Panov Attack, Modern Defense, Mieses Line 1145
• Caro-Kann Defense: Exchange Variation 1025
• Caro-Kann Defense: Panov Attack, Gunderam Attack 234
• Caro-Kann Defense: Panov Attack, Modern Defense, Carlsbad Line 143
• Caro-Kann Defense: Panov Attack 1745
• Caro-Kann Defense: Panov Attack, Fianchetto Defense 513
• Caro-Kann Defense: Panov Attack, Main Line 261
• Caro-Kann Defense 32k
• Caro-Kann Defense: Main Line 28k
• Caro-Kann Defense 26k
• Caro-Kann Defense: Tartakower Variation 8013
• Caro-Kann Defense: Rasa-Studier Gambit 1867
• Caro-Kann Defense: Campomanes Attack 1801
• Caro-Kann Defense: von Hennig Gambit 1316
• Caro-Kann Defense: Alien Gambit 1098
• Caro-Kann Defense: Forgacs Variation 933
• Caro-Kann Defense: Gurgenidze System 475
• Caro-Kann Defense: Alekhine Gambit 413
• Caro-Kann Defense: Tartakower Variation, Perlis Line 124
• Caro-Kann Defense: Gurgenidze Counterattack 120
• Caro-Kann Defense: Bronstein-Larsen Variation 666
• Caro-Kann Defense: Finnish Variation 107
• Caro-Kann Defense: Karpov Variation 2630
• Caro-Kann Defense: Karpov Variation, Modern Variation, Kasparov Attack 392
• Caro-Kann Defense: Karpov Variation, Modern Variation 213
• Caro-Kann Defense: Classical Variation 9635
• Caro-Kann Defense: Classical Variation, Main Line 2167
• Caro-Kann Defense: Classical Variation, Maróczy Attack 200
• Caro-Kann Defense: Classical Variation, Flohr Variation 146
• Caro-Kann Defense: Classical Variation 1167
• Caro-Kann Defense: Classical Variation, Spassky Variation 860
• Caro-Kann Defense: Classical Variation, Lobron System 87
• Sicilian Defense 538k
• Sicilian Defense: Bowdler Attack 37k
• Sicilian Defense: Wing Gambit 6867
• Sicilian Defense: Staunton-Cochrane Variation 6499
• Sicilian Defense: Mengarini Variation 5640
• Sicilian Defense: Czerniak Attack 3103
• Sicilian Defense: Lasker-Dunne Attack 2977
• Sicilian Defense: Wing Gambit, Marshall Variation 2299
• Sicilian Defense: Keres Variation 2061
• Sicilian Defense: Wing Gambit, Carlsbad Variation 1188
• Sicilian Defense: Wing Gambit, Abrahams Variation 259
• Sicilian Defense: Myers Attack, with a4 169
• Sicilian Defense: Kronberger Variation 146
• Sicilian Defense: Smith-Morra Gambit 42k
• Sicilian Defense: McDonnell Attack 30k
• Sicilian Defense: Smith-Morra Gambit 23k
• Sicilian Defense: Smith-Morra Gambit Accepted 14k
• Sicilian Defense: Morphy Gambit 4679
• Sicilian Defense: Smith-Morra Gambit Declined, Push Variation 2142
• Sicilian Defense: Smith-Morra Gambit Declined, Alapin Formation 1968
• Sicilian Defense: Smith-Morra Gambit Declined, Scandinavian Formation 1345
• Sicilian Defense: Smith-Morra Gambit Accepted, Paulsen Formation 1277
• Sicilian Defense: Smith-Morra Gambit Declined, Center Formation 1210
• Sicilian Defense: Smith-Morra Gambit Accepted, Kan Formation 1100
• Sicilian Defense: Smith-Morra Gambit Accepted, Scheveningen Formation 1003
• Sicilian Defense: Smith-Morra Gambit Accepted, Pin Defense 948
• Sicilian Defense: Smith-Morra Gambit Accepted, Fianchetto Defense 840
• Sicilian Defense: Smith-Morra Gambit Accepted, Fianchetto Defense 794
• Sicilian Defense: McDonnell Attack, Tal Gambit 464
• Sicilian Defense: Morphy Gambit, Andreaschek Gambit 367
• Sicilian Defense: Halasz Gambit 320
• Bird Opening: Dutch Variation, Batavo Gambit 309
• Sicilian Defense: Smith-Morra Gambit Accepted, Danish Variation 266
• Sicilian Defense: Smith-Morra Gambit Accepted, Classical Formation 185
• Sicilian Defense: McDonnell Attack, Toilet Variation 185
• Sicilian Defense: Smith-Morra Gambit Declined, Dubois Variation 161
• Sicilian Defense: Smith-Morra Gambit Accepted, Fianchetto Defense 123
• Sicilian Defense: Smith-Morra Gambit Accepted, Fianchetto Defense 106
• Sicilian Defense: Smith-Morra Gambit Accepted, Morphy Defense 95
• Sicilian Defense: Smith-Morra Gambit Accepted, Siberian Variation 80
• Sicilian Defense: Alapin Variation 40k
• Sicilian Defense: Alapin Variation, Barmen Defense 5635
• Sicilian Defense: Alapin Variation, Smith-Morra Declined 4460
• Sicilian Defense: Alapin Variation, Barmen Defense 2368
• Sicilian Defense: Alapin Variation, Barmen Defense, Central Exchange 1568
• Sicilian Defense: Delayed Alapin Variation 966
• Sicilian Defense: Alapin Variation, Barmen Defense, Modern Line 547
• Sicilian Defense: Alapin Variation, Anti-Alapin Gambit 511
• Sicilian Defense: Alapin Variation, Barmen Defense 424
• Sicilian Defense: Alapin Variation, Stoltz Attack 337
• Sicilian Defense: Closed 55k
• Sicilian Defense: Closed, Traditional 25k
• Sicilian Defense: Closed 13k
• Sicilian Defense: Grand Prix Attack 7196
• Sicilian Defense: Closed 2060
• Sicilian Defense: Closed, Chameleon Variation 805
• Sicilian Defense: Closed, Korchnoi Defense 504
• Sicilian Defense: Closed, Carlsen Variation 216
• Sicilian Defense: Grand Prix Attack, Schofman Variation 110
• Sicilian Defense: Closed, Fianchetto Variation 3701
• Sicilian Defense: Closed 2024
• Sicilian Defense: Closed 1825
• Sicilian Defense: Closed 688
• Sicilian Defense: Closed 134
• Sicilian Defense: Closed 317
• Sicilian Defense 296k
• Sicilian Defense: Hyperaccelerated Dragon 14k
• Sicilian Defense: Hyperaccelerated Dragon 7837
• Sicilian Defense: Hyperaccelerated Pterodactyl 2503
• Sicilian Defense: Katalimov Variation 821
• Sicilian Defense: Jalalabad Variation 381
• Pterodactyl Defense: Western, Rhamphorhynchus 352
• Sicilian Defense: Quinteros Variation 227
• Pterodactyl Defense: Sicilian, Rhamphorhynchus 104
• Sicilian Defense: Bücker Variation 103
• Sicilian Defense: O'Kelly Variation 7476
• Sicilian Defense: O'Kelly Variation, Normal System 3579
• Sicilian Defense: O'Kelly Variation, Venice System 1317
• Sicilian Defense: O'Kelly Variation, Yerevan System 987
• Sicilian Defense: O'Kelly Variation, Normal System, Taimanov Line 595
• Sicilian Defense: O'Kelly Variation, Maróczy Bind 521
• Sicilian Defense: O'Kelly Variation, Maróczy Bind, Paulsen Line 378
• Sicilian Defense: O'Kelly Variation, Venice System, Steiner Line 372
• Sicilian Defense: O'Kelly Variation, Réti System 184
• Sicilian Defense: O'Kelly Variation, Normal System, Smith-Morra Line 182
• Sicilian Defense: O'Kelly Variation, Aronin System 122
• Sicilian Defense: O'Kelly Variation, Quiet System 120
• Sicilian Defense: O'Kelly Variation, Normal System, Zagorovsky Line 120
• Sicilian Defense: O'Kelly Variation, Venice System, Barcza Line 91
• Sicilian Defense: O'Kelly Variation, Kieseritzky System 84
• Sicilian Defense: O'Kelly Variation, Venice System, Ljubojevic Line 82
• Sicilian Defense: Nimzowitsch Variation 2068
• Sicilian Defense: Nimzowitsch Variation, Advance Variation 851
• Sicilian Defense: Nimzowitsch Variation, Closed Variation 809
• Sicilian Defense: Old Sicilian 127k
• Sicilian Defense: Nyezhmetdinov-Rossolimo Attack 19k
• Sicilian Defense: Closed, Anti-Sveshnikov Variation 1614
• Sicilian Defense: Portsmouth Gambit 1609
• Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation 4896
• Sicilian Defense: Open 59k
• Sicilian Defense: Open 58k
• Sicilian Defense: Open 55k
• Sicilian Defense: Löwenthal Variation 15k
• Sicilian Defense: Accelerated Dragon 14k
• Sicilian Defense: Kalashnikov Variation 4218
• Sicilian Defense: Franco-Sicilian Variation 1344
• Sicilian Defense: Godiva Variation 869
• Sicilian Defense: Nimzo-American Variation 358
• Sicilian Defense: Flohr Variation 329
• Sicilian Defense: O'Kelly Variation, Maróczy Bind, Geller Line 129
• Sicilian Defense: Open 12k
• Sicilian Defense: Lasker-Pelikan Variation 4814
• Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation 1426
• Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation 1369
• Sicilian Defense: Lasker-Pelikan Variation, Schlechter Variation 1140
• Sicilian Defense: Lasker-Pelikan Variation, Retreat Variation 846
• Sicilian Defense: Lasker-Pelikan Variation, Exchange Variation 621
• Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation 245
• Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Novosibirsk Variation 192
• Sicilian Defense: Accelerated Dragon, Modern Variation 7601
• Sicilian Defense: Accelerated Dragon, Exchange Variation 2632
• Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation 1796
• Sicilian Defense: Dragon Variation, Modern Bc4 Variation 276
• Sicilian Defense: Accelerated Dragon, Maróczy Bind 2483
• Sicilian Defense: Accelerated Dragon, Maróczy Bind, Gurgenidze Variation 149
• Sicilian Defense: Accelerated Dragon, Maróczy Bind 2307
• Sicilian Defense: Accelerated Dragon, Maróczy Bind 2144
• Sicilian Defense: Accelerated Dragon, Maróczy Bind, Breyer Variation 136
• Sicilian Defense: French Variation 61k
• Sicilian Defense: French Variation, Open 31k
• Sicilian Defense: Delayed Alapin Variation, with e6 9323
• Sicilian Defense: French Variation, Normal 5761
• Sicilian Defense: Marshall Counterattack 2322
• Sicilian Defense: Kramnik Variation 2156
• Sicilian Defense: Smith-Morra Gambit Deferred 1777
• Sicilian Defense: Paulsen-Basman Defense 1294
• Sicilian Defense: Pin Variation 1151
• Sicilian Defense: French Variation, Westerinen Attack 981
• Sicilian Defense: Drazic Variation 958
• Sicilian Defense: Wing Gambit Deferred 518
• Sicilian Defense: Kveinis Variation 244
• Sicilian Defense: Pin Variation, Koch Variation 204
• Sicilian Defense: Alapin Variation, Sherzer Variation 148
• Sicilian Defense: Kan Variation 10k
• Sicilian Defense: Kan Variation, Maróczy Bind, Réti Variation 2028
• Sicilian Defense: Kan Variation, Modern Variation 1285
• Sicilian Defense: Kan Variation, Polugaevsky Variation 171
• Sicilian Defense: Kan Variation, Knight Variation 6578
• Sicilian Defense: Kan Variation, Wing Attack 1267
• Sicilian Defense: Taimanov Variation 14k
• Sicilian Defense: Taimanov Variation, Szén Variation 655
• Sicilian Defense: Taimanov Variation 9852
• Sicilian Defense: Four Knights Variation 5962
• Sicilian Defense: Four Knights Variation, Exchange Variation 1317
• Sicilian Defense: Four Knights Variation, Sveshnikov Transfer 251
• Sicilian Defense: Four Knights Variation, Cobra Variation 119
• Sicilian Defense: Taimanov Variation 3319
• Sicilian Defense: Taimanov Variation, Bastrikov Variation 1881
• Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack 883
• Sicilian Defense: Taimanov Variation, Bastrikov Variation 280
• Sicilian Defense: Modern Variations 88k
• Sicilian Defense 50k
• Sicilian Defense 49k
• Sicilian Defense: Delayed Alapin Variation, with d6 9717
• Sicilian Defense: Modern Variations, Tartakower 1939
• Sicilian Defense: Modern Variations, Anti-Qxd4 Move Order 588
• Sicilian Defense: Wing Gambit, Deferred Variation 312
• Sicilian Defense: Modern Variations, Anti-Qxd4 Move Order Accepted 94
• Sicilian Defense: Delayed Alapin Variation, Basman-Palatnik Gambit 87
• Sicilian Defense: Kopec System 82
• Sicilian Defense: Moscow Variation 6778
• Sicilian Defense: Moscow Variation, Main Line 3784
• Sicilian Defense: Moscow Variation, Sokolsky Variation 317
• Sicilian Defense: Chekhover Variation 2904
• Sicilian Defense: Modern Variations, Main Line 35k
• Sicilian Defense: Prins Variation 1097
• Sicilian Defense: Dragon Variation, Accelerated Dragon 1001
• Sicilian Defense: Modern Variations, Ginsberg Gambit 164
• Sicilian Defense: Classical Variation 6209
• Sicilian Defense: Classical Variation, Sozin Attack 841
• Sicilian Defense: Classical Variation, Anti-Sozin Variation 106
• Sicilian Defense: Classical Variation 598
• Sicilian Defense: Boleslavsky Variation 181
• Sicilian Defense: Boleslavsky Variation 113
• Sicilian Defense: Richter-Rauzer Variation 1296
• Sicilian Defense: Richter-Rauzer Variation, Modern Variation 167
• Sicilian Defense: Richter-Rauzer Variation, Modern Variation 99
• Sicilian Defense: Richter-Rauzer Variation 776
• Sicilian Defense: Richter-Rauzer Variation, Traditional Variation 478
• Sicilian Defense: Richter-Rauzer Variation, Classical Variation 182
• Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation, Early Deviations 248
• Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation 155
• Sicilian Defense: Dragon Variation 7462
• Sicilian Defense: Dragon Variation, Classical Variation 692
• Sicilian Defense: Dragon Variation, Fianchetto Variation 118
• Sicilian Defense: Dragon Variation, Levenfish Variation 269
• Sicilian Defense: Dragon Variation 3101
• Sicilian Defense: Dragon Variation, Classical Variation 592
• Sicilian Defense: Dragon Variation, Classical Variation 313
• Sicilian Defense: Dragon Variation, Yugoslav Attack, Early Deviations 2690
• Sicilian Defense: Dragon Variation, Yugoslav Attack, Belezky Line 908
• Sicilian Defense: Dragon Variation, Yugoslav Attack 2142
• Sicilian Defense: Dragon Variation, Yugoslav Attack 2060
• Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern Line 1160
• Sicilian Defense: Dragon Variation, Yugoslav Attack, Panov Variation 112
• Sicilian Defense: Dragon Variation, Yugoslav Attack, Main Line 654
• Sicilian Defense: Dragon Variation, Yugoslav Attack, Main Line 411
• Sicilian Defense: Dragon Variation, Yugoslav Attack, Main Line 126
• Sicilian Defense: Dragon Variation, Yugoslav Attack 222
• Sicilian Defense: Dragon Variation, Yugoslav Attack, Old Line 133
• Sicilian Defense: Scheveningen Variation 1967
• Sicilian Defense: Scheveningen Variation, English Attack, with Qd2 102
• Sicilian Defense: Scheveningen Variation, Keres Attack 167
• Sicilian Defense: Scheveningen Variation, Classical Variation 190
• Sicilian Defense: Scheveningen Variation, Classical Variation 628
• Sicilian Defense: Sozin Attack 519
• Sicilian Defense: Sozin Attack, Flank Variation 181
• Sicilian Defense: Sozin Attack, Leonhardt Variation 231
• Sicilian Defense: Najdorf Variation 22k
• Sicilian Defense: Najdorf Variation, English Attack 4192
• Sicilian Defense: Najdorf Variation, Lipnitsky Attack 2558
• Sicilian Defense: Najdorf Variation, Yates Variation 1561
• Sicilian Defense: Najdorf Variation, English Attack 1272
• Sicilian Defense: Najdorf Variation, Adams Attack 963
• Sicilian Defense: Scheveningen Variation, English Attack, with f3 735
• Sicilian Defense: Najdorf Variation, English Attack 513
• Sicilian Defense: Najdorf Variation, Petronić Attack 301
• Sicilian Defense: Najdorf Variation, English Attack, Anti-English 266
• Sicilian Defense: Najdorf Variation, Zagreb Variation 316
• Sicilian Defense: Najdorf Variation, Opocensky Variation 2372
• Sicilian Defense: Najdorf Variation, Opocensky Variation 322
• Sicilian Defense: Najdorf Variation, Opocensky Variation, Modern Line 107
• Sicilian Defense: Najdorf Variation, Opocensky Variation, Traditional Line 107
• Sicilian Defense: Najdorf Variation, Amsterdam Variation 513
• Sicilian Defense: Najdorf Variation 5049
• Sicilian Defense: Najdorf Variation 3473
• Sicilian Defense: Najdorf Variation 2051
• Sicilian Defense: Najdorf Variation, Poisoned Pawn Variation 280
• Sicilian Defense: Najdorf Variation, Poisoned Pawn Accepted 121
• Sicilian Defense: Najdorf Variation 1158
• Sicilian Defense: Najdorf Variation, Traditional Line 508
• Sicilian Defense: Najdorf Variation, Main Line 407

ECO C

• French Defense 266k
• French Defense: Normal Variation 156k
• French Defense 121k
• French Defense: Knight Variation 61k
• French Defense: Queen's Knight 15k
• French Defense: La Bourdonnais Variation 14k
• French Defense: Franco-Sicilian Defense 11k
• Rat Defense: Small Center Defense 8641
• French Defense: King's Indian Attack 8510
• French Defense: Steiner Variation 7031
• French Defense: Two Knights Variation 5452
• French Defense: Schlechter Variation 3354
• French Defense: Steinitz Attack 3178
• French Defense: Horwitz Attack 2611
• French Defense: Mediterranean Defense 1985
• French Defense: Wing Gambit 1684
• French Defense: Chigorin Variation 1589
• French Defense: Horwitz Attack, Papa-Ticulat Gambit 1527
• French Defense: St. George Defense 1297
• French Defense: Perseus Gambit 970
• French Defense: Réti-Spielmann Attack 910
• French Defense: Alapin Gambit 812
• French Defense: Pelikan Variation 794
• French Defense: Diemer-Duhm Gambit 781
• French Defense: Diemer-Duhm Gambit Accepted 511
• French Defense: Orthoschnapp Gambit 470
• French Defense: Franco-Hiva Gambit 419
• French Defense: La Bourdonnais Variation, Reuter Gambit 253
• French Defense: Bird Invitation 249
• French Defense: Franco-Hiva Gambit Accepted 219
• French Defense: St. George Defense, Three Pawn Attack 218
• French Defense: Carlson Gambit 164
• French Defense: Knight Variation, Franco-Hiva Gambit 120
• French Defense: Exchange Variation 37k
• French Defense: Exchange Variation 35k
• French Defense: Exchange Variation 9288
• French Defense: Exchange Variation, Monte Carlo Variation 5823
• French Defense: Exchange Variation, Svenonius Variation 1196
• French Defense: Advance Variation 40k
• French Defense: Advance Variation 36k
• French Defense: Advance Variation 29k
• French Defense: Advance Variation 21k
• French Defense: Advance Variation, Paulsen Attack 18k
• French Defense: Advance Variation, Nimzowitsch System 5978
• French Defense: Advance Variation, Euwe Variation 4537
• French Defense: Advance Variation, Milner-Barry Gambit 3289
• French Defense: Advance Variation, Main Line 2357
• French Defense: Advance Variation, Kupreichik Variation 957
• French Defense: Advance Variation, Milner-Barry Gambit, Main Line 894
• French Defense: Advance Variation, Extended Bishop Swap 818
• French Defense: Advance Variation, Wade Variation 673
• French Defense: Advance Variation, Nimzowitsch Attack 644
• French Defense: Advance Variation, Steinitz Variation 641
• French Defense: Advance Variation, Milner-Barry Gambit, Hector Variation 337
• French Defense: Advance Variation, Milner-Barry Gambit, Hector Variation 307
• French Defense: Advance Variation, Nimzowitsch Gambit 209
• French Defense: Advance Variation, Lputian Variation 208
• French Defense: Advance Variation, Ruisdonk Gambit 141
• French Defense: Tarrasch Variation 14k
• French Defense: Tarrasch Variation, Guimard Defense 677
• French Defense: Tarrasch Variation, Morozevich Variation 281
• French Defense: Tarrasch Variation, Modern System 207
• French Defense: Tarrasch Variation, Haberditz Variation 118
• French Defense: Tarrasch Variation, Guimard Defense, Main Line 283
• French Defense: Tarrasch Variation, Closed Variation 4853
• French Defense: Tarrasch Variation, Closed Variation 1814
• French Defense: Tarrasch Variation, Pawn Center Variation 717
• French Defense: Tarrasch Variation, Closed Variation, Main Line 555
• French Defense: Tarrasch Variation, Open System 3699
• French Defense: Tarrasch Variation, Open System, Euwe-Keres Line 1076
• French Defense: Tarrasch Variation, Open System, Süchting Line 947
• French Defense: Tarrasch Variation, Chistyakov Defense 569
• French Defense: Tarrasch Variation, Open System 775
• French Defense: Tarrasch Variation, Open System, Main Line 380
• French Defense: Paulsen Variation 33k
• French Defense: Rubinstein Variation 8076
• French Defense: Rubinstein Variation, Blackburne Defense 3276
• French Defense: Marshall Gambit 2281
• French Defense: Rubinstein Variation, Fort Knox Variation 822
• French Defense: Hecht-Reefschläger Variation 527
• French Defense: Classical Variation 15k
• French Defense: Classical Variation, Steinitz Variation 7982
• French Defense: Classical Variation 5221
• French Defense: Steinitz Variation 3340
• French Defense: Steinitz Variation, Boleslavsky Variation 2174
• French Defense: Classical Variation, Burn Variation 1511
• French Defense: Classical Variation, Shirov-Anand Variation 979
• French Defense: Classical Variation, Delayed Exchange Variation 945
• French Defense: Classical Variation, Swiss Variation 554
• French Defense: Classical Variation, Burn Variation, Morozevich Line 167
• French Defense: Classical Variation, Burn Variation, Main Line 86
• French Defense: Henneberger Variation 85
• French Defense: Steinitz Variation 80
• French Defense: McCutcheon Variation 609
• French Defense: McCutcheon Variation, Advance Variation 511
• French Defense: McCutcheon Variation, Lasker Variation 189
• French Defense: McCutcheon Variation, Chigorin Variation 132
• French Defense: Classical Variation, Normal Variation 2771
• French Defense: Classical Variation 1912
• French Defense: Alekhine-Chatard Attack 724
• French Defense: Classical Variation, Richter Attack 321
• French Defense: Alekhine-Chatard Attack, Albin-Chatard Gambit 174
• French Defense: Alekhine-Chatard Attack, Maróczy Variation 158
• French Defense: Alekhine-Chatard Attack, Breyer Variation 88
• French Defense: Classical Variation 992
• French Defense: Classical Variation, Steinitz Variation 492
• French Defense: Classical Variation, Pollock Variation 100
• French Defense: Winawer Variation 7838
• French Defense: Winawer Variation, Delayed Exchange Variation 1252
• French Defense: Winawer Variation, Alekhine-Maróczy Gambit 519
• French Defense: Winawer Variation, Fingerslip Variation 319
• French Defense: Winawer Variation, Alekhine Gambit Accepted 168
• French Defense: Winawer Variation, Advance Variation 4033
• French Defense: Winawer Variation, Petrosian Variation 141
• French Defense: Winawer Variation, Advance Variation 2875
• French Defense: Winawer Variation, Advance Variation 2105
• French Defense: Winawer Variation, Maróczy-Wallis Variation 286
• French Defense: Winawer Variation, Bogoljubow Variation 242
• French Defense: Winawer Variation, Retreat Variation 200
• French Defense: Winawer Variation, Advance Variation, Moscow Variation 109
• French Defense: Winawer Variation, Advance Variation 1501
• French Defense: Winawer Variation, Advance Variation 864
• French Defense: Winawer Variation, Classical Variation 245
• French Defense: Winawer Variation, Poisoned Pawn Variation 230
• French Defense: Winawer Variation, Portisch-Hook Variation 191
• French Defense: Winawer Variation, Poisoned Pawn Variation, Main Line 87
• French Defense: Winawer Variation, Positional Variation 141
• King's Pawn Game 749k
• Center Game 47k
• King's Pawn Game: Leonardis Variation 15k
• King's Pawn Game: MacLeod Attack 5225
• King's Pawn Game: Wayward Queen Attack 3752
• English Opening: The Whale 3551
• King's Pawn Game: Napoleon Attack 2469
• King's Pawn Game: Alapin Opening 1469
• King's Pawn Game: King's Head Opening 1103
• King's Pawn Opening 1053
• King's Pawn Game: Beyer Gambit 1002
• King's Pawn Game: Mengarini's Opening 922
• Portuguese Opening 547
• King's Pawn Game: Clam Variation, King's Gambit Reversed 341
• King's Pawn Game: Wayward Queen Attack, Kiddie Countergambit 281
• King's Pawn Game: Tortoise Opening 180
• King's Pawn Game: MacLeod Attack, Lasa Gambit 104
• Barnes Opening: Walkerling 102
• Center Game Accepted 35k
• Danish Gambit 15k
• Danish Gambit Accepted 9900
• Center Game 8483
• Center Game: Kieseritzky Variation 8185
• Center Game: Halasz-McDonnell Gambit 1908
• Center Game: Kieseritzky Variation 1515
• Center Game: von der Lasa Gambit 1500
• Danish Gambit Declined: Sörensen Defense 1432
• Danish Gambit Accepted: Copenhagen Defense 1141
• Center Game: Kieseritzky Variation 973
• Danish Gambit Accepted: Classical Defense 480
• Center Game: Ross Gambit 300
• Danish Gambit Accepted: Schlechter Defense 289
• Danish Gambit Accepted: Chigorin Defense 203
• Center Game: Lanc-Arnold Gambit 111
• Center Game: Normal Variation 7194
• Center Game: Paulsen Attack Variation 3648
• Center Game: Berger Variation 1223
• Center Game: Hall Variation 327
• Bishop's Opening 69k
• Bishop's Opening: Boi Variation 8213
• Bishop's Opening: Philidor Counterattack 1986
• Bishop's Opening: Calabrese Countergambit 878
• Bishop's Opening: Lewis Gambit 536
• Bishop's Opening: Philidor Variation 477
• Bishop's Opening: Khan Gambit 440
• Bishop's Opening: Calabrese Countergambit, Jaenisch Variation 200
• Bishop's Opening: Stein Gambit 141
• Bishop's Opening: Berlin Defense 22k
• Bishop's Opening: Vienna Hybrid 5995
• Bishop's Opening: Ponziani Gambit 2530
• Bishop's Opening: Paulsen Defense 1388
• Bishop's Opening: Berlin Defense, Greco Gambit 167
• Vienna Game 56k
• Vienna Game: Max Lange Defense 24k
• Vienna Game: Anderssen Defense 4868
• Vienna Gambit, with Max Lange Defense 3555
• Vienna Gambit, with Max Lange Defense: Knight Variation 1328
• Vienna Game: Paulsen Variation 1152
• Vienna Game: Omaha Gambit 1048
• Vienna Game: Stanley Variation, Meitner-Mieses Gambit 601
• Vienna Gambit, with Max Lange Defense: Steinitz Gambit 115
• Vienna Gambit, with Max Lange Defense: Pierce Gambit 101
• Vienna Gambit, with Max Lange Defense: Cunningham Defense 90
• Vienna Game: Falkbeer Variation 20k
• Vienna Game: Stanley Variation 8328
• Bishop's Opening: Vienna Hybrid, Spielmann Attack 2230
• Vienna Game: Stanley Variation, Reversed Spanish 1009
• Vienna Game: Mieses Variation 762
• Vienna Game: Mengarini Variation 325
• Vienna Game: Frankenstein-Dracula Variation 1016
• Bishop's Opening: Boden-Kieseritzky Gambit 368
• Vienna Game: Stanley Variation, Three Knights Variation 8123
• Bishop's Opening: Vienna Hybrid, Hromádka Variation 348
• Vienna Game: Vienna Gambit 7646
• Vienna Game: Vienna Gambit, Main Line 2673
• Vienna Game: Vienna Gambit, Paulsen Attack 1111
• Vienna Game: Vienna Gambit, Bardeleben Variation 232
• Vienna Game: Vienna Gambit, Modern Variation 177
• King's Gambit 68k
• King's Gambit Declined: Queen's Knight Defense 16k
• King's Gambit Declined: Classical Variation 2628
• King's Gambit Declined: Petrov's Defense 1566
• King's Gambit Declined: Keene's Defense 806
• King's Gambit Declined: Keene's Defense 803
• King's Gambit Declined: Keene Defense 481
• King's Gambit Declined: Mafia Defense 477
• King's Gambit Declined: Classical Variation 460
• King's Gambit Declined: Miles Defense 422
• King's Gambit Declined: Panteldakis Countergambit 327
• King's Gambit Declined: Norwalde Variation 265
• King's Gambit Declined: Classical, Soldatenkov Variation 177
• King's Gambit Declined: Falkbeer Countergambit 10k
• King's Gambit Declined: Falkbeer Countergambit Accepted 6403
• King's Gambit Declined: Falkbeer Countergambit, Staunton Line 2457
• King's Gambit Declined: Falkbeer Countergambit, Modern Transfer 2185
• King's Gambit Declined: Falkbeer Countergambit, Blackburne Attack 2146
• King's Gambit Declined: Falkbeer Countergambit, Charousek Gambit 806
• King's Gambit Declined: Falkbeer Countergambit, Nimzowitsch-Marshall Countergambit 474
• King's Gambit Declined: Falkbeer Countergambit, Milner-Barry Variation 461
• King's Gambit Declined: Falkbeer Countergambit, Hinrichsen Gambit 267
• Van Geet Opening: Grünfeld Defense, Steiner Gambit 116
• King's Gambit Declined: Falkbeer Countergambit, Charousek Gambit Accepted 236
• King's Gambit Accepted 28k
• King's Gambit Accepted: Bishop's Gambit 1926
• King's Gambit Accepted: Bishop's Gambit, Maurian Defense 592
• King's Gambit Accepted: Villemson Gambit 425
• King's Gambit Accepted: Bishop's Gambit, Cozio Defense 258
• King's Gambit Accepted: Bishop's Gambit, Anderssen Defense 232
• King's Gambit Accepted: Bishop's Gambit, Bogoljubow Variation 140
• King's Gambit Accepted: Bishop's Gambit, Greco Variation 122
• King's Gambit Accepted: Bishop's Gambit, First Jaenisch Variation 99
• King's Gambit Accepted: Mason-Keres Gambit 96
• King's Gambit Accepted: King's Knight's Gambit 25k
• King's Gambit Accepted: MacLeod Defense 6742
• King's Gambit Accepted: King's Knight's Gambit 6154
• King's Gambit Accepted: Fischer Defense 5240
• King's Gambit Accepted: Schallopp Defense 1865
• King's Gambit Accepted: Becker Defense 1328
• King's Gambit Accepted: Bonsch-Osmolovsky Variation 867
• King's Gambit Accepted: Fischer Defense, Spanish Variation 134
• King's Gambit Accepted: Cunningham Defense 3246
• King's Gambit Accepted: Cunningham Defense, Bertin Gambit 490
• King's Gambit Accepted: Cunningham Defense, Bertin Gambit 270
• King's Gambit Accepted: Cunningham Defense, McCormick Defense 142
• King's Gambit Accepted: Modern Defense 3974
• King's Gambit Accepted: Modern Defense 3473
• King's Gambit Accepted: Abbazia Defense 1552
• King's Gambit Accepted: King's Knight's Gambit 3486
• King's Gambit Accepted: Rosentreter Gambit 784
• King's Gambit Accepted: Muzio Gambit, Wild Muzio Gambit 552
• King's Gambit Accepted: Blachly Gambit 538
• King's Gambit Accepted: Salvio Gambit 445
• King's Gambit Accepted: Muzio Gambit, Sarratt Defense 287
• King's Gambit Accepted: Lolli Gambit 228
• King's Gambit Accepted: Sörensen Gambit 155
• King's Gambit Accepted: Salvio Gambit, Silberschmidt Defense 149
• King's Gambit Accepted: Quaade Gambit 134
• King's Gambit Accepted: Ghulam-Kassim Gambit 104
• King's Gambit Accepted: Salvio Gambit, Anderssen Counterattack 103
• King's Gambit Accepted: Rosentreter Gambit, Testa Variation 81
• King's Gambit Accepted: Traditional Variation 686
• King's Gambit Accepted: Hanstein Gambit 310
• King's Gambit Accepted: King's Knight's Gambit 1430
• King's Gambit Accepted: Kieseritzky Gambit 795
• King's Gambit Accepted: Allgaier Gambit 366
• King's Gambit Accepted: Kieseritzky Gambit, Long Whip 348
• King's Gambit Accepted: Kieseritzky Gambit, Kolisch Defense 240
• King's Gambit Accepted: Kieseritzky Gambit, Cotter Gambit 188
• King's Gambit Accepted: Kieseritzky Gambit, Berlin Defense 83
• King's Knight Opening 477k
• Elephant Gambit 15k
• King's Pawn Game: Busch-Gass Gambit 9148
• Elephant Gambit: Paulsen Countergambit 6204
• Latvian Gambit 5705
• King's Pawn Game: McConnell Defense 4791
• Latvian Gambit Accepted 1524
• King's Pawn Game: Damiano Defense 995
• King's Pawn Game: Gunderam Gambit 972
• Gunderam Defense 880
• Latvian Gambit: Mlotkowski Variation 760
• Latvian Gambit: Mason Countergambit 643
• Latvian Gambit Accepted: Main Line 613
• Latvian Gambit: Mayet Attack 384
• Latvian Gambit Accepted: Bilguer Variation 381
• Elephant Gambit: Maróczy Gambit 337
• King's Pawn Game: Busch-Gass Gambit, Chiodini Gambit 213
• Latvian Gambit: Fraser Defense 156
• Latvian Gambit: Mayet Attack, Morgado Defense 123
• Latvian Gambit: Greco Variation 105
• Elephant Gambit: Wasp Variation 91
• Latvian Gambit Accepted: Bronstein Attack 87
• Philidor Defense 71k
• Philidor Defense 31k
• Philidor Defense 28k
• Philidor Defense: Exchange Variation 18k
• Philidor Defense: Exchange Variation 13k
• Philidor Defense 9027
• Philidor Defense: Exchange Variation 4872
• Philidor Defense: Lion Variation 2604
• Philidor Defense: Hanham Variation 2568
• Philidor Defense: Morphy Gambit 1554
• Philidor Defense: Steinitz Variation 1453
• Philidor Defense: Bird Gambit 826
• Philidor Defense: Lopez Countergambit 792
• Philidor Defense: Nimzowitsch Variation 638
• Philidor Defense: Philidor Countergambit 469
• Philidor Defense: Nimzowitsch Variation 438
• Philidor Defense: Larsen Variation 436
• Philidor Defense: Nimzowitsch Variation, Klein Variation 329
• Philidor Defense: Philidor Countergambit, Zukertort Variation 159
• Philidor Defense: Albin-Blackburne Gambit 124
• Petrov's Defense 47k
• Petrov's Defense: Three Knights Game 22k
• Petrov's Defense 15k
• Petrov's Defense: Italian Variation 11k
• Petrov's Defense 6237
• Petrov's Defense 5386
• Petrov's Defense: Stafford Gambit 5304
• Petrov's Defense 5273
• Petrov's Defense: Stafford Gambit Accepted 4371
• Petrov's Defense: Stafford Gambit Accepted 2210
• Petrov's Defense: Classical Attack 2112
• Petrov's Defense: Damiano Variation 1544
• Petrov's Defense: Stafford Gambit Accepted 1369
• Petrov's Defense: Cozio Attack 1053
• Petrov's Defense: Nimzowitsch Attack 1013
• Petrov's Defense: Classical Attack, Marshall Variation 684
• Petrov's Defense: Damiano Variation, Kholmov Gambit 675
• Petrov's Defense: French Attack 576
• Petrov's Defense: Cochrane Gambit 445
• Petrov's Defense: Classical Attack, Staunton Variation 351
• Petrov's Defense: Paulsen Attack 277
• Petrov's Defense: Classical Attack, Mason-Showalter Variation 259
• Petrov's Defense: Cochrane Gambit, Bishop Check Line 182
• Petrov's Defense: Cochrane Gambit, Center Variation 152
• Petrov's Defense: Millennium Attack 134
• Petrov's Defense: Classical Attack, Mason Variation 124
• Petrov's Defense: Karklins-Martinovsky Variation 119
• Petrov's Defense: Classical Attack, Jaenisch Variation 88
• Petrov's Defense: Modern Attack 4664
• Petrov's Defense: Modern Attack 1943
• Bishop's Opening: Urusov Gambit 1175
• Petrov's Defense: Modern Attack, Center Variation 692
• Petrov's Defense: Modern Attack, Symmetrical Variation 265
• Petrov's Defense: Modern Attack, Center Attack 216
• Bishop's Opening: Urusov Gambit, Keidansky Gambit 188
• King's Knight Opening: Normal Variation 328k
• Scotch Game 70k
• Scotch Game 66k
• Scotch Game: Scotch Gambit 19k
• Ponziani Opening 13k
• Scotch Game: Lolli Variation 11k
• Scotch Game: Scotch Gambit, Dubois Réti Defense 9132
• Scotch Game: Göring Gambit 5718
• Ponziani Opening: Jaenisch Counterattack 5594
• Scotch Game: Haxo Gambit 5563
• Scotch Game: Scotch Gambit, Advance Variation 4434
• Scotch Game: Benima Defense 2903
• Scotch Game: Göring Gambit, Double Pawn Sacrifice 2306
• Scotch Game: Scotch Gambit, London Defense 1769
• Ponziani Opening: Neumann Gambit 1567
• Ponziani Opening: Jaenisch Counterattack 1509
• King's Pawn Game: Tayler Opening 1265
• Scotch Game: Scotch Gambit, Sarratt Variation 1114
• Scotch Game: Göring Gambit, Main Line 981
• Scotch Game: Lolli Variation 708
• King's Knight Opening: Konstantinopolsky 685
• Scotch Game: Scotch Gambit, Göring Gambit Declined 683
• King's Pawn Game: Dresden Opening 633
• Scotch Game: Scotch Gambit, Kingside Variation 543
• Ponziani Opening: Ponziani Countergambit 433
• Ponziani Opening: Jaenisch Counterattack 372
• Scotch Game: Göring Gambit, Bardeleben Variation 326
• Scotch Game: Relfsson Gambit 257
• Scotch Game: Scotch Gambit, Cochrane-Anderssen Variation 180
• Ponziani Opening: Romanishin Variation 175
• Irish Gambit 162
• Ponziani Opening: Spanish Variation 144
• King's Pawn Game: Schulze-Müller Gambit 144
• Scotch Game: Vitzthum Attack 106
• Ponziani Opening: Caro Gambit 94
• Ponziani Opening: Steinitz Variation 88
• Latvian Gambit: Clam Gambit 86
• Scotch Game 37k
• Scotch Game: Classical Variation 11k
• Scotch Game: Schmidt Variation 5937
• Scotch Game: Potter Variation 1629
• Scotch Game: Classical Variation, Intermezzo Variation 1495
• Scotch Game: Mieses Variation 1060
• Scotch Game: Steinitz Variation 919
• Scotch Game: Malaniuk Variation 474
• Scotch Game: Steinitz Variation 472
• Scotch Game: Modern Defense 420
• Scotch Game: Blumenfeld Attack 257
• Scotch Game: Paulsen Attack 170
• Scotch Game: Ghulam-Kassim Variation 149
• Three Knights Opening 32k
• Three Knights Opening 1913
• Three Knights Opening: Winawer Defense 812
• Three Knights Opening: Steinitz Defense 245
• Four Knights Game 27k
• Four Knights Game: Italian Variation 15k
• Four Knights Game: Scotch Variation 7834
• Four Knights Game: Scotch Variation Accepted 6512
• Four Knights Game: Italian Variation, Noa Gambit 1532
• Four Knights Game: Gunsberg Variation 1202
• Four Knights Game: Halloween Gambit 957
• Four Knights Game: Scotch Variation Accepted, Main Line 411
• Four Knights Game: Glek System 377
• Four Knights Game: Scotch Variation, Belgrade Gambit 295
• Four Knights Game: Scotch Variation, Schmid Defense 168
• Four Knights Game: Spanish Variation 7524
• Four Knights Game: Spanish Variation, Classical Variation 2062
• Four Knights Game: Spanish Variation, Rubinstein Variation 1091
• Four Knights Game: Spanish Variation, Ranken Variation 407
• Four Knights Game: Spanish Variation, Rubinstein Variation Accepted 240
• Four Knights Game: Spanish Variation, Rubinstein Variation, Henneberger Variation 112
• Four Knights Game: Spanish Variation, Double Spanish 1156
• Four Knights Game: Spanish Variation, Double Spanish 121
• Italian Game 142k
• Italian Game: Giuoco Piano 53k
• Italian Game: Giuoco Pianissimo, Normal 15k
• Italian Game: Anti-Fried Liver Defense 13k
• Italian Game: Paris Defense 11k
• Four Knights Game: Italian Variation 10k
• Italian Game: Giuoco Pianissimo 9670
• Italian Game: Hungarian Defense 7753
• Italian Game: Giuoco Pianissimo, Italian Four Knights Variation 7365
• Italian Game: Rousseau Gambit 6323
• Italian Game: Blackburne-Kostić Gambit 4118
• Italian Game: Classical Variation, Albin Gambit 2692
• Italian Game: Rosentreter Gambit 2204
• Italian Game: Deutz Gambit 1597
• Italian Game: Giuoco Pianissimo 1315
• Italian Game: Giuoco Pianissimo, Canal Variation 1035
• Italian Game: Giuoco Pianissimo 1009
• Italian Game: Giuoco Pianissimo, Lucchini Gambit 728
• Italian Game: Giuoco Pianissimo 517
• Italian Game: Jerome Gambit 275
• Italian Game: Hungarian Defense, Tartakower Variation 87
• Italian Game: Evans Gambit 4700
• Italian Game: Evans Gambit Accepted 3763
• Italian Game: Evans Gambit, McDonnell Defense 1177
• Italian Game: Evans Gambit, Anderssen Variation 883
• Italian Game: Evans Gambit Declined 554
• Italian Game: Evans Gambit, Stone-Ware Variation 218
• Italian Game: Evans Gambit Declined 153
• Italian Game: Evans Gambit, Anderssen Variation, Cordel Line 146
• Italian Game: Evans Gambit, Harding Variation 104
• Italian Game: Evans Gambit, McDonnell Defense, Main Line 89
• Italian Game: Evans Gambit, Main Line 1554
• Italian Game: Evans Gambit, Pierce Defense 862
• Italian Game: Evans Gambit, Bronstein Defense 205
• Italian Game: Evans Gambit, Slow Variation 187
• Italian Game: Evans Gambit, Compromised Defense 152
• Italian Game: Evans Gambit, Anderssen Defense 149
• Italian Game: Evans Gambit, Mieses Defense 105
• Italian Game: Evans Gambit, Tartakower Attack 100
• Italian Game: Evans Gambit 81
• Italian Game: Classical Variation 18k
• Italian Game: Classical Variation, La Bourdonnais Variation 1803
• Italian Game: Bird's Attack 229
• Italian Game: Classical Variation, Closed Variation 205
• Italian Game: Classical Variation, Center Holding Variation 83
• Italian Game: Classical Variation 10k
• Italian Game: Classical Variation, Giuoco Pianissimo 7657
• Italian Game: Classical Variation, Center Attack 5325
• Italian Game: Classical Variation, Greco Gambit, Traditional Line 3375
• Italian Game: Classical Variation, Giuoco Pianissimo 3155
• Italian Game: Classical Variation, Giuoco Pianissimo 1878
• Italian Game: Giuoco Piano, Greco's Attack 1868
• Italian Game: Classical Variation, Greco Gambit, Modern Line 1665
• Italian Game: Classical Variation, Giuoco Pianissimo 1653
• Italian Game: Classical Variation, Greco Gambit, Modern Line 894
• Italian Game: Classical Variation, Giuoco Pianissimo, with h6 820
• Italian Game: Classical Variation, Greco Gambit, Main Line 669
• Italian Game: Classical Variation, Giuoco Pianissimo 643
• Italian Game: Classical Variation, Giuoco Pianissimo, with a6 432
• Italian Game: Classical Variation, Greco Gambit, Moeller-Therkatz Attack 339
• Italian Game: Classical Variation, Greco Gambit, Greco Variation 325
• Italian Game: Classical Variation, Greco Gambit, Anderssen Variation 311
• Italian Game: Classical Variation, Giuoco Pianissimo, Albin Variation 299
• Italian Game: Classical Variation, with d5 271
• Italian Game: Classical Variation, Giuoco Pianissimo 241
• Italian Game: Classical Variation, Giuoco Pianissimo 241
• Italian Game: Classical Variation, Greco Gambit, Dubov Italian 234
• Italian Game: Classical Variation, Giuoco Pianissimo 164
• Italian Game: Giuoco Piano, Aitken Variation 99
• Italian Game: Classical Variation, Giuoco Pianissimo 86
• Italian Game: Two Knights Defense 51k
• Italian Game: Two Knights Defense, Modern Bishop's Opening 20k
• Italian Game: Two Knights Defense, Modern Bishop's Opening 4502
• Italian Game: Two Knights Defense 1756
• Italian Game: Two Knights Defense, Modern Bishop's Opening 261
• Italian Game: Two Knights Defense, Open Variation 4855
• Italian Game: Scotch Gambit 2858
• Italian Game: Scotch Gambit, Max Lange Attack 1688
• Italian Game: Scotch Gambit, Max Lange Attack 1675
• Italian Game: Two Knights Defense, Max Lange Attack 1306
• Italian Game: Scotch Gambit, Double Gambit Accepted 1238
• Italian Game: Two Knights Defense, Perreux Variation 860
• Italian Game: Scotch Gambit, Anderssen Attack 757
• Italian Game: Scotch Gambit, Janowski Defense 647
• Italian Game: Scotch Gambit, de Riviere Defense 536
• Italian Game: Scotch Invitation Declined 431
• Italian Game: Scotch Gambit, Max Lange Attack, Spielmann Defense 387
• Italian Game: Scotch Gambit, Walbrodt-Baird Gambit 313
• Italian Game: Scotch Gambit, Nakhmanson Gambit 151
• Italian Game: Two Knights Defense, Knight Attack 13k
• Italian Game: Two Knights Defense, Knight Attack, Normal Variation 10k
• Italian Game: Two Knights Defense, Traxler Counterattack 1408
• Italian Game: Two Knights Defense, Fritz Variation 1382
• Italian Game: Two Knights Defense, Ulvestad Variation 1195
• Italian Game: Two Knights Defense, Fried Liver Attack 1126
• Italian Game: Two Knights Defense, Ponziani-Steinitz Gambit 729
• Italian Game: Two Knights Defense, Traxler Counterattack, Bishop Sacrifice Line 711
• Italian Game: Two Knights Defense, Traxler Counterattack, Knight Sacrifice Line 511
• Italian Game: Two Knights Defense, Polerio Defense 5962
• Italian Game: Two Knights Defense, Polerio Defense, Bishop Check Line 5249
• Italian Game: Two Knights Defense, Polerio Defense, Bogoljubow Variation 1060
• Italian Game: Two Knights Defense 728
• Italian Game: Two Knights Defense, Polerio Defense, Kieseritzky Variation 289
• Italian Game: Two Knights Defense, Blackburne Variation 144
• Italian Game: Two Knights Defense, Colman Variation 90
• Italian Game: Two Knights Defense, Polerio Defense, Suhle Defense 470
• Ruy Lopez 81k
• Ruy Lopez: Cozio Defense 4072
• Ruy Lopez: Fianchetto Defense 358
• Ruy Lopez: Nürnberg Variation 353
• Ruy Lopez: Vinogradov Variation 226
• Ruy Lopez: Lucena Variation 199
• Ruy Lopez: Spanish Countergambit 122
• Ruy Lopez: Alapin Defense 88
• Ruy Lopez: Cozio Defense, Paulsen Variation 88
• Ruy Lopez: Bird Variation 3434
• Ruy Lopez: Steinitz Defense 17k
• Ruy Lopez: Steinitz Defense 5512
• Ruy Lopez: Schliemann Defense 3004
• Ruy Lopez: Schliemann Defense, Exchange Variation 658
• Ruy Lopez: Schliemann Defense, Jaenisch Gambit Accepted 504
• Ruy Lopez: Schliemann Defense, Dyckhoff Variation 420
• Ruy Lopez: Schliemann Defense, Schönemann Attack 218
• Ruy Lopez: Schliemann Defense, Tartakower Variation 104
• Ruy Lopez: Classical Variation 11k
• Ruy Lopez: Classical Variation, Central Variation 3388
• Ruy Lopez: Berlin Defense 14k
• Ruy Lopez: Berlin Defense 6538
• Ruy Lopez: Berlin Defense, Anti-Berlin Variation 3802
• Ruy Lopez: Berlin Defense, Beverwijk Variation 2531
• Ruy Lopez: Classical Variation, Zukertort Gambit 1270
• Ruy Lopez: Berlin Defense, Anti-Berlin Variation, Mortimer Variation 100
• Ruy Lopez: Berlin Defense, Improved Steinitz Defense 2302
• Ruy Lopez: Berlin Defense, Rio Gambit Accepted 2531
• Ruy Lopez: Berlin Defense, l'Hermet Variation 740
• Ruy Lopez: Berlin Defense, l'Hermet Variation, Berlin Wall Defense 492
• Ruy Lopez: Berlin Defense, Berlin Wall 99
• Ruy Lopez: Open Berlin Defense, l'Hermet Variation 86
• Ruy Lopez: Exchange Variation 6463
• Ruy Lopez: Exchange Variation, Keres Variation 524
• Ruy Lopez: Exchange Variation, Lutikov Variation 359
• Ruy Lopez: Exchange, Alekhine Variation 121
• Ruy Lopez: Exchange Variation, Normal Variation 2558
• Ruy Lopez: Exchange Variation, King's Bishop Variation 800
• Ruy Lopez: Exchange Variation, Gligoric Variation 493
• Ruy Lopez: Exchange Variation, Alapin Gambit 279
• Ruy Lopez: Exchange Variation, Bronstein Variation 82
• Ruy Lopez: Morphy Defense 25k
• Ruy Lopez: Morphy Defense, Caro Variation 3071
• Ruy Lopez: Morphy Defense, Classical Defense Deferred 1059
• Ruy Lopez: Morphy Defense, Graz Variation 791
• Ruy Lopez: Morphy Defense, Schliemann Defense Deferred 185
• Ruy Lopez: Morphy Defense, Norwegian Variation 166
• Ruy Lopez: Morphy Defense, Cozio Defense 137
• Ruy Lopez: Morphy Defense, Modern Steinitz Defense 1822
• Ruy Lopez: Morphy Defense, Modern Steinitz Defense 870
• Ruy Lopez: Morphy Defense, Modern Steinitz Defense 705
• Ruy Lopez: Morphy Defense, Modern Steinitz Defense 157
• Ruy Lopez: Morphy Defense, Anderssen Variation 2967
• Ruy Lopez: Morphy Defense, Tarrasch Variation 616
• Ruy Lopez: Morphy Defense, Wormald Attack 305
• Ruy Lopez: Morphy Defense, Mackenzie Variation 302
• Ruy Lopez: Morphy Defense, Jaffe Gambit 126
• Ruy Lopez: Morphy Defense, Bayreuth Variation 120
• Ruy Lopez: Morphy Defense 8101
• Ruy Lopez: Morphy Defense, Neo-Arkhangelsk Variation 1300
• Ruy Lopez: Morphy Defense, Møller Variation 695
• Ruy Lopez: Morphy Defense 245
• Ruy Lopez: Morphy Defense, Arkhangelsk Variation 177
• Ruy Lopez: Morphy Defense, Steinitz Deferred 723
• Ruy Lopez: Open 791
• Ruy Lopez: Open 461
• Ruy Lopez: Open 380
• Ruy Lopez: Open 312
• Ruy Lopez: Open, Main Line 309
• Ruy Lopez: Open, Bernstein Variation 98
• Ruy Lopez: Open 146
• Ruy Lopez: Closed 3408
• Ruy Lopez: Closed, Martinez Variation 357
• Ruy Lopez: Closed, Center Attack 84
• Ruy Lopez: Closed, Delayed Exchange 135
• Ruy Lopez: Closed, Averbakh Variation 218
• Ruy Lopez: Closed 3404
• Ruy Lopez: Closed 2181
• Ruy Lopez: Closed, Anti-Marshall 334
• Ruy Lopez: Marshall Attack 918
• Ruy Lopez: Marshall Attack, Modern Variation 471
• Ruy Lopez: Marshall Attack, Main Line 302
• Ruy Lopez: Closed 957
• Ruy Lopez: Closed, Yates Variation 199
• Ruy Lopez: Closed, Bogoljubow Variation 91
• Ruy Lopez: Closed 836
• Ruy Lopez: Closed, Flohr System 83
• Ruy Lopez: Closed, Breyer Defense 125
• Ruy Lopez: Closed, Breyer 111
• Ruy Lopez: Closed, Breyer Defense, Zaitsev Hybrid 82
• Ruy Lopez: Closed, Chigorin Defense 387
• Ruy Lopez: Closed, Chigorin Defense 375
• Ruy Lopez: Closed, Chigorin Defense 393
• Ruy Lopez: Closed, Chigorin Defense 136

ECO D

• Queen's Pawn Game 432k
• Queen's Pawn Game: Accelerated London System 75k
• Queen's Pawn Game 35k
• Queen's Pawn Game: Chigorin Variation 31k
• Blackmar-Diemer Gambit 18k
• Queen's Pawn Game 15k
• Queen's Pawn Game: Chigorin Variation 9455
• Queen's Pawn Game: Levitsky Attack 9104
• Blackmar-Diemer Gambit 8275
• Queen's Pawn Game: Accelerated London System, Steinitz Countergambit 6140
• Queen's Pawn Game: Mason Attack 5272
• Blackmar-Diemer Gambit Accepted 5212
• Queen's Pawn Game: Stonewall Attack 4720
• Queen's Pawn Game: Hübsch Gambit 3321
• Queen's Pawn Game: Chigorin Variation, Alburt Defense 2724
• Blackmar-Diemer Gambit: Blackmar Gambit 2452
• Blackmar-Diemer Gambit Accepted: Teichmann Defense 1645
• Blackmar-Diemer Gambit: von Popiel Gambit 1603
• Blackmar-Diemer Gambit Accepted: Euwe Defense 1319
• Blackmar-Diemer Gambit Accepted: Ryder Gambit 1261
• Blackmar-Diemer Gambit: Zeller Defense 1147
• Queen's Pawn Game: Chigorin Variation, Irish Gambit 1129
• Blackmar-Diemer Gambit: Netherlands Variation 1037
• Blackmar-Diemer Gambit Accepted: Euwe Defense, Duthilleul Gambit 794
• Blackmar-Diemer Gambit Declined: Vienna Defense 764
• Blackmar-Diemer Gambit Accepted: Ziegler Defense 737
• Blackmar-Diemer Gambit: Lemberger Countergambit 563
• Blackmar-Diemer Gambit Declined: O'Kelly Defense 563
• Queen's Pawn Game: Accelerated London System, Steinitz Countergambit Accepted 359
• Blackmar-Diemer Gambit Declined: Weinsbach Defense 349
• Blackmar-Diemer Gambit Accepted: Bogoljubow Defense 290
• Blackmar-Diemer Gambit: Fritz Attack 263
• Blackmar-Diemer Gambit Declined: Langeheinicke Defense 253
• Amazon Attack 250
• Queen's Pawn Game: Chigorin Variation, Shaviliuk Gambit 230
• Blackmar-Diemer Gambit: Reversed Albin Countergambit 229
• Blackmar-Diemer Gambit: Diemer-Rosenberg Attack 196
• Blackmar-Diemer Gambit Accepted: Gunderam Defense 193
• Queen's Pawn Game: Chigorin Variation, Anti-Veresov 185
• Blackmar-Diemer Gambit Accepted: Pietrowsky Defense 173
• Blackmar-Diemer Gambit Accepted: Teichmann Defense, Classical Variation 151
• Blackmar-Diemer Gambit Declined: Weinsbach Defense, Pfrang Gambit 150
• Blackmar-Diemer Gambit Declined: Brombacher Countergambit 106
• Blackmar-Diemer Gambit: Lemberger Countergambit, Endgame Variation 103
• Blackmar-Diemer Gambit Declined: Elbert Countergambit 90
• Rapport-Jobava System 16k
• Rapport-Jobava System, with e6 6843
• Rapport-Jobava System 6705
• Richter-Veresov Attack 3600
• Rapport-Jobava System 1633
• Richter-Veresov Attack 440
• Richter-Veresov Attack: Richter Variation 259
• Richter-Veresov Attack: Boyce Defense 221
• Richter-Veresov Attack: Veresov Variation 126
• Richter-Veresov Attack: Two Knights System 107
• Queen's Pawn Game: Zukertort Variation 98k
• Queen's Pawn Game: Symmetrical Variation 51k
• Queen's Pawn Game: London System 20k
• Queen's Pawn Game: Chigorin Variation 17k
• Queen's Pawn Game: London System, with e6 13k
• Queen's Pawn Game: London System, with e6 12k
• Queen's Pawn Game: Krause Variation 6379
• Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan 5444
• Queen's Pawn Game: Anti-Torre 4324
• Queen's Pawn Game: London System 3828
• Queen's Gambit Declined: Baltic Defense, Pseudo-Slav 1830
• Queen's Pawn Game: London System 808
• Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan 419
• Queen's Pawn Game: London System 395
• Queen's Pawn Game: Torre Attack 4778
• Queen's Pawn Game: Torre Attack, Gossip Variation 735
• Queen's Pawn Game: Torre Attack, Grünfeld Variation 132
• Queen's Pawn Game: Colle System 16k
• Queen's Pawn Game: Colle System, Anti-Colle 3449
• Queen's Pawn Game: Colle System, Grünfeld Formation 458
• Queen's Pawn Game: Colle System 10k
• Queen's Pawn Game: Colle System 5816
• Queen's Pawn Game: Colle System, Traditional Colle 948
• Rubinstein Opening 821
• Queen's Pawn Game: Colle System 261
• Queen's Pawn Game: Colle System 205
• Queen's Gambit 177k
• Queen's Gambit Declined: Marshall Defense 29k
• Queen's Gambit Declined: Baltic Defense 6205
• Queen's Gambit Declined: Austrian Defense 3424
• Queen's Gambit Declined: Austrian Attack, Salvio Countergambit 399
• Queen's Gambit Declined: Marshall Defense, Tan Gambit 260
• Queen's Gambit Declined: Baltic Defense, Queen Attack 197
• Queen's Gambit Declined: Baltic Defense, Queen Attack Deferred 190
• Queen's Gambit Declined: Austrian Defense, Gusev Countergambit 104
• Queen's Gambit Declined: Baltic Defense, Pseudo-Chigorin 87
• Queen's Gambit Declined: Chigorin Defense 5122
• Queen's Gambit Declined: Chigorin Defense 2132
• Queen's Gambit Declined: Chigorin Defense 1757
• Queen's Gambit Declined: Chigorin Defense, Exchange Variation 1149
• Queen's Gambit Declined: Chigorin Defense, Main Line 971
• Queen's Gambit Declined: Chigorin Defense, Janowski Variation 859
• Queen's Gambit Declined: Chigorin Defense, Modern Gambit 161
• Queen's Gambit Declined: Chigorin Defense, Tartakower Gambit 151
• Queen's Gambit Declined: Chigorin Defense, Lazard Gambit 86
• Queen's Gambit Declined: Albin Countergambit 7507
• Queen's Gambit Declined: Albin Countergambit, Normal Line 2790
• Queen's Gambit Declined: Albin Countergambit, Tartakower Defense 331
• Queen's Gambit Declined: Albin Countergambit, Modern Line 301
• Queen's Gambit Declined: Albin Countergambit, Lasker Trap 229
• Queen's Gambit Declined: Albin Countergambit, Spassky Variation 138
• Queen's Gambit Declined: Albin Countergambit, Fianchetto Variation 482
• Queen's Gambit Declined: Albin Countergambit, Fianchetto Variation, Bg4 Line 165
• Queen's Gambit Declined: Albin Countergambit, Fianchetto Variation, Be6 Line 92
• Slav Defense 58k
• Slav Defense 32k
• Slav Defense: Exchange Variation 8142
• Slav Defense 3217
• Slav Defense: Slav Gambit, Alekhine Attack 1049
• Slav Defense: Diemer Gambit 635
• Slav Defense: Winawer Countergambit 242
• Slav Defense: Exchange Variation, Boor Attack 183
• Slav Defense: Modern Line 17k
• Slav Defense: Quiet Variation 3491
• Slav Defense: Quiet Variation, Pin Defense 965
• Slav Defense: Bonet Gambit 326
• Slav Defense: Breyer Variation 120
• Slav Defense: Quiet Variation, Schallopp Defense 1067
• Slav Defense: Quiet Variation, Schallopp Defense 795
• Slav Defense: Exchange Variation 1668
• Slav Defense: Exchange Variation, Symmetrical Line 149
• Slav Defense: Three Knights Variation 18k
• Slav Defense: Two Knights Attack 2314
• Slav Defense: Schlechter Variation 1158
• Slav Defense: Chebanenko Variation 902
• Slav Defense: Geller Gambit 462
• Slav Defense: Geller Gambit 131
• Slav Defense: Alekhine Variation 124
• Slav Defense: Alapin Variation 1169
• Slav Defense: Czech Variation 754
• Slav Defense: Czech Variation, Krause Attack 157
• Slav Defense: Czech Variation, Classical System 391
• Slav Defense: Czech Variation, Dutch Variation 233
• Queen's Gambit Accepted 30k
• Queen's Gambit Accepted: Old Variation 7194
• Queen's Gambit Accepted: Saduleto Variation 6878
• Queen's Gambit Accepted: Central Variation, McDonnell Defense 1693
• Queen's Gambit Accepted: Central Variation, Greco Variation 1148
• Queen's Gambit Accepted: Central Variation, Alekhine System 889
• Queen's Gambit Accepted: Central Variation, Modern Defense 717
• Queen's Gambit Accepted: Accelerated Mannheim Variation 390
• Queen's Gambit Accepted: Central Variation, Rubinstein Defense 281
• Queen's Gambit Accepted: Central Variation, McDonnell Defense, Somov Gambit 100
• Queen's Gambit Accepted: Normal Variation 3939
• Queen's Gambit Accepted: Rosenthal Variation 1704
• Queen's Gambit Accepted: Gunsberg Defense 516
• Queen's Gambit Accepted: Slav Gambit 233
• Queen's Gambit Accepted: Alekhine Defense 243
• Queen's Gambit Accepted 3029
• Queen's Gambit Accepted: Showalter Variation 1682
• Queen's Gambit Accepted 436
• Queen's Gambit Accepted 242
• Queen's Gambit Accepted: Normal Variation 1416
• Queen's Gambit Accepted: Janowski-Larsen Variation 255
• Queen's Gambit Accepted: Normal Variation, Traditional System 814
• Queen's Gambit Accepted: Classical Defense 370
• Queen's Gambit Accepted: Classical Defense, Normal Line 281
• Queen's Gambit Accepted: Normal Variation, Traditional System 142
• Queen's Gambit Accepted: Classical Defense, Main Line 210
• Queen's Gambit Declined 75k
• Queen's Gambit Declined: Traditional Variation 2498
• Queen's Gambit Declined: Tarrasch Defense, Pseudo-Tarrasch 1881
• Queen's Gambit Declined: Vienna Variation 92
• Queen's Gambit Declined: Queen's Knight Variation 47k
• Semi-Slav Defense: Accelerated Move Order 13k
• Semi-Slav Defense: Marshall Gambit 1555
• Queen's Gambit Declined: Janowski Variation 1124
• Semi-Slav Defense: Noteboom Variation 935
• Queen's Gambit Declined: Charousek Variation 880
• Semi-Slav Defense: Anti-Noteboom, Stonewall Variation 274
• Queen's Gambit Declined: Alapin Variation 161
• Semi-Slav Defense: Marshall Gambit, Main Line 88
• Tarrasch Defense 2829
• Queen's Gambit Declined: Tarrasch Defense 994
• Tarrasch Defense: Two Knights Variation 714
• Tarrasch Defense: Symmetrical Variation 462
• Tarrasch Defense: Schara Gambit 354
• Tarrasch Defense: Prague Variation 137
• Tarrasch Defense: Rubinstein System 122
• Queen's Gambit Declined: Normal Defense 44k
• Queen's Gambit Declined: Exchange Variation 9532
• Queen's Gambit Declined: Exchange Variation, Positional Variation 6830
• Queen's Gambit Declined: Harrwitz Attack 2460
• Queen's Gambit Declined: Exchange Variation, Positional Variation 2294
• Queen's Gambit Declined: Exchange Variation, Reshevsky Variation 338
• Queen's Gambit Declined: Exchange Variation, Reshevsky Variation 298
• Queen's Gambit Declined: Three Knights Variation 24k
• Queen's Gambit Declined: Harrwitz Attack 2293
• Queen's Gambit Declined: Three Knights, Vienna Variation 1572
• Queen's Gambit Declined: Three Knights Variation 1224
• Queen's Gambit Declined: Barmen Variation 856
• Queen's Gambit Declined: Harrwitz Attack, Fianchetto Defense 187
• Queen's Gambit Declined: Harrwitz Attack, Two Knights Defense 129
• Queen's Gambit Declined: Vienna Variation, Quiet Variation 99
• Queen's Gambit Declined: Ragozin Defense 5791
• Queen's Gambit Declined: Ragozin Defense, Alekhine Variation 393
• Queen's Gambit Declined: Semi-Tarrasch Defense 2587
• Queen's Gambit Declined: Semi-Tarrasch Defense, Pillsbury Variation 557
• Queen's Gambit Declined: Semi-Tarrasch Defense 791
• Queen's Gambit Declined: Semi-Tarrasch Defense, Exchange Variation 366
• Queen's Gambit Declined: Semi-Tarrasch Defense, Exchange Variation 150
• Semi-Slav Defense 12k
• Semi-Slav Defense: Anti-Moscow Gambit 204
• Semi-Slav Defense Accepted 272
• Semi-Slav Defense: Botvinnik Variation 167
• Semi-Slav Defense: Botvinnik Variation 81
• Semi-Slav Defense: Main Line 3362
• Semi-Slav Defense: Normal Variation 817
• Semi-Slav Defense: Stoltz Variation 124
• Semi-Slav Defense: Main Line 271
• Semi-Slav Defense: Semi-Meran Variation 196
• Semi-Slav Defense: Meran Variation 147
• Queen's Gambit Declined: Modern Variation 14k
• Queen's Gambit Declined: Been-Koomen Variation 287
• Queen's Gambit Declined: Pseudo-Tarrasch Variation 86
• Queen's Gambit Declined: Modern Variation, Knight Defense 958
• Queen's Gambit Declined: Modern Variation, Knight Defense 543
• Queen's Gambit Declined: Modern Variation, Knight Defense 475
• Queen's Gambit Declined 1302
• Queen's Gambit Declined: Cambridge Springs Defense 373
• Queen's Gambit Declined: Cambridge Springs Defense, Capablanca Variation 95
• Queen's Gambit Declined 8807
• Queen's Gambit Declined 5618
• Queen's Gambit Declined: Modern Variation, Heral Variation 469
• Queen's Gambit Declined 152
• Queen's Gambit Declined: Modern Variation, Normal Line 4015
• Queen's Gambit Declined: Neo-Orthodox Variation 1028
• Queen's Gambit Declined: Neo-Orthodox Variation, Main Line 968
• Queen's Gambit Declined: Tartakower Defense 231
• Queen's Gambit Declined: Orthodox Defense 593
• Queen's Gambit Declined: Orthodox Defense, Botvinnik Variation 168
• Neo-Grünfeld Defense: with Nf3 960
• Neo-Grünfeld Defense: Goglidze Attack 97
• Neo-Grünfeld Defense: with g3 86
• Neo-Grünfeld Defense: with g3 124
• Neo-Grünfeld Defense: Classical Variation 777
• Neo-Grünfeld Defense: Classical Variation, Modern Defense 116
• Neo-Grünfeld Defense: Classical Variation, Original Defense 531
• Grünfeld Defense 8805
• Grünfeld Defense: Stockholm Variation 823
• Grünfeld Defense: Brinckmann Attack 464
• Grünfeld Defense: Brinckmann Attack, Grünfeld Gambit 171
• Grünfeld Defense: Exchange Variation 3953
• Grünfeld Defense: Exchange Variation, Modern Exchange Variation 1366
• Grünfeld Defense: Exchange Variation, Modern Exchange Variation 1036
• Grünfeld Defense: Exchange Variation, Modern Exchange Variation 111
• Grünfeld Defense: Exchange Variation, Classical Variation 816
• Grünfeld Defense: Exchange Variation, Spassky Variation 400
• Grünfeld Defense: Three Knights Variation 3441
• Grünfeld Defense: Three Knights Variation 2436
• Grünfeld Defense: Three Knights Variation, Petrosian System 677
• Grünfeld Defense: Three Knights Variation, Hungarian Attack 462
• Grünfeld Defense: Three Knights Variation, Hungarian Variation 313
• Grünfeld Defense: Three Knights Variation, Burille Variation 989
• Grünfeld Defense: Three Knights Variation, Paris Variation 112
• Grünfeld Defense: Russian Variation 232
• Grünfeld Defense: Russian Variation 105

ECO E

• Catalan Opening 2623
• Catalan Opening 2282
• Indian Defense: Seirawan Attack 883
• Catalan Opening: Open Defense 1851
• Catalan Opening: Tarrasch Defense 152
• Catalan Opening: Open Defense 220
• Catalan Opening: Open Defense 691
• Catalan Opening: Open Defense 126
• Catalan Opening: Open Defense, Classical Line 670
• Catalan Opening: Closed 2839
• Catalan Opening: Closed 542
• Catalan Opening: Closed 92
• Indian Defense: Anti-Nimzo-Indian 16k
• Blumenfeld Countergambit 143
• Bogo-Indian Defense 3105
• Bogo-Indian Defense: Grünfeld Variation 627
• Bogo-Indian Defense: Nimzowitsch Variation 548
• Bogo-Indian Defense: Exchange Variation 518
• Bogo-Indian Defense: Retreat Variation 362
• Bogo-Indian Defense: Wade-Smyslov Variation 245
• Bogo-Indian Defense: Retreat Variation 221
• Bogo-Indian Defense: Retreat Variation 189
• Bogo-Indian Defense: Retreat Variation 175
• Bogo-Indian Defense: Vitolins Variation 149
• Queen's Indian Defense 3565
• Queen's Indian Defense: Kasparov Variation 1189
• Queen's Indian Defense: Petrosian Variation 508
• Queen's Indian Defense: Kasparov-Petrosian Variation 373
• Queen's Indian Defense: Kasparov-Petrosian Variation, Main Line 125
• Queen's Indian Defense: Kasparov-Petrosian Variation, Marco Defense 85
• Queen's Indian Defense: Spassky System 304
• Queen's Indian Defense: Spassky System 286
• Queen's Indian Defense: Fianchetto Variation 1612
• Queen's Indian Defense: Fianchetto Variation, Traditional Line 1190
• Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation 403
• Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation, Quiet Line 168
• Queen's Indian Defense: Fianchetto Variation, Check Variation 113
• Queen's Indian Defense: Fianchetto Variation, Check Variation, Intermezzo Line 99
• Queen's Indian Defense: Fianchetto Variation, Sämisch Variation 87
• Queen's Indian Defense: Capablanca Variation 290
• Queen's Indian Defense: Classical Variation 683
• Queen's Indian Defense: Traditional Variation 473
• Queen's Indian Defense: Classical Variation, Traditional Variation 314
• Nimzo-Indian Defense 18k
• Nimzo-Indian Defense: Kmoch Variation 893
• Nimzo-Indian Defense: Dilworth Gambit 149
• Nimzo-Indian Defense: Romanishin Variation 147
• Nimzo-Indian Defense: Three Knights Variation 2960
• Nimzo-Indian Defense: Spielmann Variation 607
• Nimzo-Indian Defense: Sämisch Variation 1558
• Nimzo-Indian Defense: Sämisch Variation 155
• Nimzo-Indian Defense: Sämisch Variation 320
• Nimzo-Indian Defense: Leningrad Variation 2227
• Nimzo-Indian Defense: Classical Variation 3799
• Nimzo-Indian Defense: Classical Variation, Zurich Variation 146
• Nimzo-Indian Defense: Classical Variation, Noa Variation 782
• Nimzo-Indian Defense: Classical Variation, Noa Variation 212
• Nimzo-Indian Defense: Classical Variation, Noa Variation 122
• Nimzo-Indian Defense: Classical Variation, Berlin Variation 792
• Nimzo-Indian Defense: Rubinstein System 2843
• Nimzo-Indian Defense: Rubinstein System 435
• Nimzo-Indian Defense: Rubinstein System, Rubinstein Variation 138
• Nimzo-Indian Defense: St. Petersburg Variation 487
• Nimzo-Indian Defense: St. Petersburg Variation 101
• Nimzo-Indian Defense: St. Petersburg Variation 170
• Nimzo-Indian Defense: Normal Variation 1127
• Nimzo-Indian Defense: Reshevsky Variation 236
• Nimzo-Indian Defense: Normal Variation 556
• Nimzo-Indian Defense: Normal Variation, Classical Defense 307
• Nimzo-Indian Defense 225
• Nimzo-Indian Defense: Normal Variation, Ragozin Variation 316
• Indian Defense: West Indian Defense 39k
• King's Indian Defense: Normal Variation, King's Knight Variation 9888
• King's Indian Defense: Fianchetto Variation 2062
• King's Indian Defense: Fianchetto Variation, Immediate Fianchetto 1175
• Indian Defense: Anti-Grünfeld, Alekhine Variation 540
• Indian Defense: Anti-Grünfeld, Basman-Williams Attack 157
• Indian Defense: Anti-Grünfeld, Advance Variation 134
• King's Indian Defense 32k
• King's Indian Defense: Smyslov Variation 1596
• King's Indian Defense: Semi-Classical Variation 244
• King's Indian Defense: Fianchetto Variation, Delayed Fianchetto 640
• King's Indian Defense: Fianchetto Variation, Carlsbad Variation 225
• King's Indian Defense: Fianchetto Variation, Uhlmann-Szabo System 90
• King's Indian Defense: Fianchetto Variation, Yugoslav System 142
• King's Indian Defense: Fianchetto Variation, Debrecen Defense 257
• King's Indian Defense: Fianchetto Variation, Classical Fianchetto 249
• King's Indian Defense: Normal Variation 21k
• King's Indian Defense: Normal Variation 18k
• King's Indian Defense: Accelerated Averbakh Variation 684
• King's Indian Defense: Kramer Variation 192
• King's Indian Defense: Makogonov Variation 2037
• King's Indian Defense: Karpov System 489
• King's Indian Defense: Normal Variation, Standard Development 2718
• King's Indian Defense: Semi-Averbakh System 551
• King's Indian Defense: Averbakh Variation 426
• King's Indian Defense: Averbakh Variation, Flexible Defense 145
• King's Indian Defense: Four Pawns Attack 3204
• King's Indian Defense: Four Pawns Attack, Dynamic Attack 759
• King's Indian Defense: Four Pawns Attack, Normal Attack 205
• King's Indian Defense: Four Pawns Attack 109
• King's Indian Defense: Sämisch Variation 3665
• King's Indian Defense: Sämisch Variation, Normal Defense 3337
• King's Indian Defense: Sämisch Variation, Sämisch Gambit 310
• King's Indian Defense: Steiner Attack 110
• King's Indian Defense: Sämisch Variation, Bobotsov-Korchnoi-Petrosian Variation 83
• King's Indian Defense: Sämisch Variation, Yates Defense 318
• King's Indian Defense: Sämisch Variation, Orthodox Variation 506
• King's Indian Defense: Sämisch Variation, Closed Variation 249
• King's Indian Defense: Normal Variation, Rare Defenses 9386
• King's Indian Defense: Zinnowitz Variation 215
• King's Indian Defense: Larsen Variation 95
• King's Indian Defense: Orthodox Variation 5674
• King's Indian Defense: Kazakh Variation 216
• King's Indian Defense: Orthodox Variation 1983
• King's Indian Defense: Petrosian Variation 375
• King's Indian Defense: Exchange Variation 192
• King's Indian Defense: Petrosian Variation, Stein Defense 140
• King's Indian Defense: Orthodox Variation, Gligoric-Taimanov System 115
• King's Indian Defense: Orthodox Variation 890
• King's Indian Defense: Orthodox Variation, Positional Defense 383
• King's Indian Defense: Orthodox Variation, Positional Defense, Closed Line 107
• King's Indian Defense: Orthodox Variation, Aronin-Taimanov Defense 711
• King's Indian Defense: Orthodox Variation, Bayonet Attack 120
• King's Indian Defense: Orthodox Variation, Classical System 164