KCEC
(Kirr's Chess Engine Comparison)
A tournament of original free chess engines
June 16, 2013
Testing summary:
Total: 135,679 games
played by 202 programs
1398 CPU days (X2 4600+)

White wins: 55,227 (40.7%)
Black wins: 47,434 (35.0%)
Draws: 33,018 (24.3%)
White score: 52.9%

Opening statistics

This page shows how many KCEC games were played from various known openings. The table also shows average draw percentage and white score.

ECOOpeningNumber
of
games
DrawsWhite
score
C40Latvian, Fraser defence10.0%100.0%
C31KGD, Falkbeer, Nimzovich variation10.0%100.0%
D63QGD, Orthodox defence, Capablanca variation10.0%100.0%
C37KGA, Rosentreter gambit10.0%100.0%
A06Tennison (Lemberg, Zukertort) gambit10.0%100.0%
C12French, MacCutcheon, Bernstein variation10.0%100.0%
A70Benoni, classical without 9.O-O10.0%100.0%
A04Reti, Pirc-Lisitsin gambit20.0%100.0%
C44Ponziani, Reti variation10.0%100.0%
C29Vienna gambit, Steinitz variation10.0%100.0%
E82King's Indian, Saemisch, double fianchetto variation10.0%100.0%
E60King's Indian, Danube gambit10.0%100.0%
B69Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 11.Bxf610.0%100.0%
A52Budapest defence40.0%100.0%
D83Gruenfeld, Gruenfeld gambit10.0%100.0%
B64Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9.f420.0%100.0%
D86Gruenfeld, exchange, Simagin's lesser variation10.0%100.0%
C33KGA, bishop's gambit, Maurian defence10.0%100.0%
C13French, Albin-Alekhine-Chatard attack, Teichmann variation10.0%100.0%
C58Two knights defence, Colman variation10.0%100.0%
C14French, classical, Rubinstein variation30.0%100.0%
C29Vienna gambit, Kaufmann variation10.0%100.0%
B03Alekhine's defence, four pawns attack, Planinc variation20.0%100.0%
B04Alekhine's defence, modern, Keres variation40.0%100.0%
C41Philidor, Hanham, Steiner variation10.0%100.0%
E08Catalan, closed, 7.Qc220.0%100.0%
C67Ruy Lopez, Berlin defence, Minckwitz variation20.0%100.0%
A02Bird, From gambit10.0%100.0%
C83Ruy Lopez, open, 9...Be7, 10.Re110.0%100.0%
C23Bishop's opening, Philidor counter-attack10.0%100.0%
D26QGA, classical, Steinitz variation20.0%100.0%
D31QGD, semi-Slav, Junge variation10.0%100.0%
C42Petrov, classical attack, Maroczy variation10.0%100.0%
E87King's Indian, Saemisch, orthodox, Bronstein variation10.0%100.0%
C65Ruy Lopez, Berlin defence, Kaufmann variation10.0%100.0%
B15Caro-Kann, Gurgenidze counter-attack20.0%100.0%
D00Blackmar-Diemer gambit10.0%100.0%
D67QGD, Orthodox defence, Bd3 line, 11.O-O10.0%100.0%
C13French, classical, Vistaneckis (Nimzovich) variation10.0%100.0%
A47Queen's Indian, Marienbad system10.0%100.0%
B31Sicilian, Nimzovich-Rossolimo attack, Gurgenidze variation10.0%100.0%
C21Danish gambit, Soerensen defence30.0%100.0%
D67QGD, Orthodox defence, Bd3 line20.0%100.0%
B05Alekhine's defence, modern, Panov variation10.0%100.0%
C33KGA, Keres (Mason-Steinitz) gambit10.0%100.0%
D49QGD semi-Slav, Meran, Rabinovich variation10.0%100.0%
C30KGD, Keene's defence10.0%100.0%
C70Ruy Lopez, Graz variation10.0%100.0%
C41Philidor, Lopez counter-gambit20.0%100.0%
C53Giuoco Piano, Mestel variation10.0%100.0%
B01Scandinavian, Anderssen counter-attack, Goteborg system10.0%100.0%
D08QGD, Albin counter-gambit, Krenosz variation10.0%100.0%
D67QGD, Orthodox defence, Bd3 line, Janowski variation20.0%100.0%
C41Philidor, Nimzovich, Sokolsky variation10.0%100.0%
C82Ruy Lopez, open, Motzko attack30.0%100.0%
A82Dutch, Balogh defence10.0%100.0%
C41Philidor, Nimzovich, Sozin variation10.0%100.0%
C22Centre game, Charousek variation20.0%100.0%
D90Gruenfeld, Schlechter variation20.0%100.0%
B03Alekhine's defence, four pawns attack, fianchetto variation10.0%100.0%
B40Sicilian, Pin, Jaffe variation10.0%100.0%
B09Pirc, Austrian attack, Ljubojevic variation10.0%100.0%
D99Gruenfeld defence, Smyslov, Yugoslav variation10.0%100.0%
C33King's gambit accepted20.0%100.0%
C10French, Rubinstein, Capablanca line10.0%100.0%
A71Benoni, classical, 8.Bg510.0%100.0%
C41Philidor, Philidor counter-gambit, Zukertort variation30.0%100.0%
A21English, Smyslov defence20.0%100.0%
C80Ruy Lopez, open, Friess attack10.0%100.0%
C96Ruy Lopez, closed, Keres (...Nd7) defence10.0%100.0%
C44Ponziani, Steinitz variation40.0%100.0%
C55Two knights, Max Lange attack, Steinitz variation10.0%100.0%
C49Four knights, Svenonius variation10.0%100.0%
C06French, Tarrasch, Leningrad variation20.0%100.0%
C14French, classical, Tarrasch variation20.0%100.0%
D48QGD semi-Slav, Meran, old main line40.0%100.0%
D18QGD Slav, Dutch, Lasker variation20.0%100.0%
C15French, Winawer, Alekhine gambit10.0%100.0%
C26Vienna, Mengarini variation616.7%91.7%
A13English, Romanishin gambit520.0%90.0%
C90Ruy Lopez, closed, Suetin variation520.0%90.0%
E62King's Indian, fianchetto, Simagin variation922.2%88.9%
A86Dutch, Leningrad variation425.0%87.5%
A56Czech Benoni, King's Indian system425.0%87.5%
D41QGD, Semi-Tarrasch, Kmoch variation425.0%87.5%
A52Budapest, Alekhine, Abonyi variation425.0%87.5%
B12Caro-Kann, Edinburgh variation70.0%85.7%
C44Scotch gambit, Benima defence1030.0%85.0%
B73Sicilian, dragon, classical, Richter variation333.3%83.3%
C41Philidor, Larsen variation933.3%83.3%
B22Sicilian, 2.c3, Heidenfeld variation333.3%83.3%
C39KGA, Kieseritsky, Kolisch defence333.3%83.3%
E89King's Indian, Saemisch, orthodox main line333.3%83.3%
D52QGD, Cambridge Springs defence, 7.cd333.3%83.3%
A00Amsterdam attack333.3%83.3%
C13French, classical, Frankfurt variation333.3%83.3%
C65Ruy Lopez, Berlin defence, Nyholm attack837.5%81.3%
C81Ruy Lopez, open, Howell attack50.0%80.0%
B27Sicilian, Katalimov variation1513.3%80.0%
A92Dutch, stonewall variation100.0%80.0%
C55Two knights defence, Perreux variation50.0%80.0%
D56QGD, Lasker defence, Teichmann variation1225.0%79.2%
B42Sicilian, Kan, Swiss cheese variation1225.0%79.2%
A51Budapest, Fajarowicz variation1414.3%78.6%
C05French, Tarrasch, Botvinnik variation714.3%78.6%
A90Dutch defence, Dutch-Indian (Nimzo-Dutch) variation714.3%78.6%
B32Sicilian, Labourdonnais-Loewenthal variation1618.8%78.1%
C30KGD, Mafia defence1711.8%76.5%
C12French, MacCutcheon, Janowski variation2119.0%76.2%
C01French, exchange, Svenonius variation1435.7%75.0%
C21Halasz gambit250.0%75.0%
C41Philidor, Nimzovich, Rellstab variation1435.7%75.0%
C33KGA, bishop's gambit, Boden defence250.0%75.0%
B74Sicilian, dragon, classical, Reti-Tartakower variation250.0%75.0%
B72Sicilian, dragon, classical, Grigoriev variation250.0%75.0%
C21Danish gambit250.0%75.0%
C71Ruy Lopez, modern Steinitz defence, Three knights variation250.0%75.0%
B56Sicilian, Venice attack616.7%75.0%
D22QGA, Haberditz variation40.0%75.0%
B04Alekhine's defence, modern, Schmid variation80.0%75.0%
E60Queen's pawn, Mengarini attack616.7%75.0%
C44Ponziani, Romanishin variation250.0%75.0%
D53QGD, 4.Bg5 Be7, 5.e3 O-O250.0%75.0%
B06Robatsch defence, Gurgenidze variation450.0%75.0%
E53Nimzo-Indian, 4.e3, Gligoric system with 7...Nbd7250.0%75.0%
A97Dutch, Ilyin-Genevsky, Winter variation40.0%75.0%
C39KGA, Kieseritsky, Salvio (Rosenthal) defence250.0%75.0%
A03Bird's opening, Lasker variation250.0%75.0%
A28English, Nenarokov variation40.0%75.0%
C24Bishop's opening, Ponziani gambit616.7%75.0%
D33QGD, Tarrasch, Wagner variation250.0%75.0%
C52Evans gambit, Alapin-Steinitz variation250.0%75.0%
A72Benoni, classical without 9.O-O40.0%75.0%
C66Ruy Lopez, closed Berlin defence, Showalter variation450.0%75.0%
C93Ruy Lopez, closed, Smyslov defence40.0%75.0%
C53Giuoco Piano, Anderssen variation250.0%75.0%
C42Petrov, Damiano variation450.0%75.0%
C46Three knights, Schlechter variation250.0%75.0%
C96Ruy Lopez, closed, Rossolimo defence250.0%75.0%
B82Sicilian, Scheveningen, Tal variation1921.1%73.7%
B07Pirc, 150 attack1513.3%73.3%
B32Sicilian, Flohr variation137.7%73.1%
D05Queen's pawn game, Rubinstein (Colle-Zukertort) variation2623.1%73.1%
C92Ruy Lopez, closed, Flohr-Zaitsev system (Lenzerheide variation)3737.8%73.0%
C45Scotch, Steinitz variation1118.2%72.7%
D19QGD Slav, Dutch variation, main line933.3%72.2%
C50Giuoco Piano2733.3%72.2%
A51Budapest defence declined933.3%72.2%
C47Four knights, Scotch, Krause variation1822.2%72.2%
E07Catalan, closed, Botvinnik variation3414.7%72.1%
A83Dutch, Staunton gambit, Chigorin variation728.6%71.4%
E62King's Indian, fianchetto, Larsen system2821.4%71.4%
D25QGA, Flohr variation728.6%71.4%
A97Dutch, Ilyin-Genevsky variation728.6%71.4%
D48QGD semi-Slav, Meran, Reynolds' variation2611.5%71.2%
A54Old Indian, Ukrainian variation1936.8%71.1%
A93Dutch, stonewall, Botwinnik variation2416.7%70.8%
A90Dutch-Indian, Alekhine variation560.0%70.0%
C22Centre game1040.0%70.0%
C70Ruy Lopez, Caro variation520.0%70.0%
C65Ruy Lopez, Berlin defence, 4.O-O1020.0%70.0%
C33KGA, Lesser bishop's (Petroff-Jaenisch-Tartakower) gambit520.0%70.0%
A18English, Mikenas-Carls, Flohr variation520.0%70.0%
C57Two knights defence, Lolli attack560.0%70.0%
C77Ruy Lopez, Treybal (Bayreuth) variation (exchange var. deferred)560.0%70.0%
A53Old Indian, Janowski variation520.0%70.0%
A58Benko gambit, fianchetto variation520.0%70.0%
C37KGA, Blachly gambit520.0%70.0%
A41Robatsch defence, Rossolimo variation1020.0%70.0%
C57Two knights defence, Pincus variation560.0%70.0%
A34English, symmetrical, Rubinstein system560.0%70.0%
C41Philidor, Nimzovich variation520.0%70.0%
C26Vienna, Falkbeer variation520.0%70.0%
C82Ruy Lopez, open, Italian variation1020.0%70.0%
C41Philidor, Steinitz variation520.0%70.0%
E17Queen's Indian, Opovcensky variation6331.7%69.8%
A61Benoni, Nimzovich (knight's tour) variation130.0%69.2%
A86Dutch with c4 & g31315.4%69.2%
D66QGD, Orthodox defence, Bd3 line, fianchetto variation812.5%68.8%
E46Nimzo-Indian, Reshevsky variation2429.2%68.8%
D34QGD, Tarrasch, Prague variation, 7...Be75213.5%68.3%
C75Ruy Lopez, modern Steinitz defence1127.3%68.2%
E60King's Indian, Anti-Gruenfeld1127.3%68.2%
E98King's Indian, orthodox, Aronin-Taimanov, 9.Ne12227.3%68.2%
B83Sicilian, modern Scheveningen, main line1127.3%68.2%
C63Ruy Lopez, Schliemann defence1145.5%68.2%
D55QGD, 6.Nf33917.9%67.9%
D41QGD, Semi-Tarrasch, San Sebastian variation5322.6%67.9%
A54Old Indian, Ukrainian variation, 4.Nf32025.0%67.5%
A17English opening2025.0%67.5%
D76Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb62931.0%67.2%
C96Ruy Lopez, closed (10...c5)3828.9%67.1%
C34KGA, Bonsch-Osmolovsky variation30.0%66.7%
C13French, Albin-Alekhine-Chatard attack1216.7%66.7%
A17English, Queens Indian, Romanishin variation366.7%66.7%
A13English, Neo-Catalan accepted3622.2%66.7%
A62Benoni, fianchetto variation547.4%66.7%
C29Vienna gambit, Breyer variation90.0%66.7%
B57Sicilian, Magnus Smith trap60.0%66.7%
D98Gruenfeld, Russian, Keres variation30.0%66.7%
A50Queen's Indian accelerated30.0%66.7%
C30KGD, classical, Soldatenkov variation30.0%66.7%
E86King's Indian, Saemisch, orthodox, 7.Nge2 c61216.7%66.7%
C48Four knights, Bardeleben variation30.0%66.7%
E50Nimzo-Indian, 4.e3 e8g8, 5.Nf3, without ...d530.0%66.7%
B07Pirc, Holmov system366.7%66.7%
C55Two knights, Max Lange attack, Schlechter variation30.0%66.7%
C30KGD, classical, 4.c330.0%66.7%
E21Nimzo-Indian, three knights, Korchnoi variation30.0%66.7%
C49Four knights, symmetrical, Tarrasch variation366.7%66.7%
E37Nimzo-Indian, classical, Noa variation, main line, 7.Qc230.0%66.7%
C36KGA, Abbazia defence (classical defence, modern defence[!])30.0%66.7%
B09Pirc, Austrian attack, 6.Be3120.0%66.7%
D32QGD, Tarrasch defence, Marshall gambit366.7%66.7%
B44Sicilian, Szen, hedgehog variation1233.3%66.7%
C41Philidor, Nimzovich, Klein variation30.0%66.7%
D52QGD1526.7%66.7%
D55QGD, Neo-orthodox variation, 7.Bh44922.4%66.3%
B07Robatsch defence, Geller's system3420.6%66.2%
C28Vienna game348.8%66.2%
D17QGD Slav, Czech defence2825.0%66.1%
A09Reti accepted4119.5%65.9%
C41Philidor, Hanham, Schlechter variation1926.3%65.8%
C80Ruy Lopez, open, 6.d41631.3%65.6%
B08Pirc, classical, h3 system2927.6%65.5%
E33Nimzo-Indian, classical, Milner-Barry (Zurich) variation2913.8%65.5%
A28English, four knights system6523.1%65.4%
C13French, Albin-Alekhine-Chatard attack, Spielmann variation1050.0%65.0%
D34QGD, Tarrasch, Prague variation, 9.Bg55724.6%64.9%
E91King's Indian, Kazakh variation3721.6%64.9%
A21English, Troeger defence1747.1%64.7%
D16QGD Slav accepted, Alapin variation2412.5%64.6%
C77Ruy Lopez, four knights (Tarrasch) variation2412.5%64.6%
B16Caro-Kann, Bronstein-Larsen variation2123.8%64.3%
A42Modern defence, Averbakh system714.3%64.3%
B34Sicilian, accelerated fianchetto, exchange variation714.3%64.3%
D15QGD Slav accepted714.3%64.3%
D52QGD, Cambridge Springs defence, Rubinstein variation714.3%64.3%
C13French, Albin-Alekhine-Chatard attack, Breyer variation742.9%64.3%
E88King's Indian, Saemisch, orthodox, 7.d5 c6742.9%64.3%
B05Alekhine's defence, modern variation, 4...Bg41442.9%64.3%
E31Nimzo-Indian, Leningrad, main line714.3%64.3%
C44Scotch, Lolli variation258.0%64.0%
C64Ruy Lopez, classical (Cordel) defence2516.0%64.0%
A09Reti opening2532.0%64.0%
D30QGD, Vienna variation2524.0%64.0%
B07Pirc, Sveshnikov system258.0%64.0%
C41Philidor's defence5424.1%63.9%
D55QGD, Neo-orthodox variation, 7.Bxf61816.7%63.9%
D35QGD, exchange, Saemisch variation2924.1%63.8%
B02Alekhine's defence, Saemisch attack110.0%63.6%
D50QGD, 4.Bg51136.4%63.6%
B12Caro-Kann, advance, Short variation1136.4%63.6%
E16Queen's Indian, Capablanca variation2227.3%63.6%
D46QGD semi-Slav, Romih variation3718.9%63.5%
D07QGD, Chigorin defence, Janowski variation1520.0%63.3%
B41Sicilian, Kan, Maroczy bind (Reti variation)3821.1%63.2%
C41Philidor, Nimzovich (Jaenisch) variation1931.6%63.2%
A61Benoni defence4617.4%63.0%
A52Budapest, Adler variation3129.0%62.9%
C42Petrov, classical attack, close variation5123.5%62.7%
A37English, symmetrical variation5119.6%62.7%
B06Robatsch defence2015.0%62.5%
D95Gruenfeld, Botvinnik variation425.0%62.5%
E93King's Indian, Petrosian system, main line425.0%62.5%
C45Scotch, Romanishin variation425.0%62.5%
E87King's Indian, Saemisch, orthodox, 7.d58022.5%62.5%
D52QGD, Cambridge Springs defence825.0%62.5%
A09Reti accepted, Keres variation425.0%62.5%
C30King's gambit2015.0%62.5%
E32Nimzo-Indian, classical, Adorjan gambit825.0%62.5%
A61Benoni, Uhlmann variation825.0%62.5%
B18Caro-Kann, classical, Flohr variation80.0%62.5%
E77King's Indian, Four pawns attack425.0%62.5%
C58Two knights defence, Paoli variation425.0%62.5%
E16Queen's Indian, Riumin variation425.0%62.5%
C21Centre game425.0%62.5%
D14QGD Slav, exchange, Trifunovic variation825.0%62.5%
B02Alekhine's defence, Brooklyn defence475.0%62.5%
C02French, advance, Milner-Barry gambit1625.0%62.5%
E20Nimzo-Indian defence1225.0%62.5%
E40Nimzo-Indian, 4.e32416.7%62.5%
D52QGD, Cambridge Springs defence, Capablanca variation475.0%62.5%
A04Reti v Dutch21514.9%62.3%
C43Petrov, modern (Steinitz) attack4522.2%62.2%
B76Sicilian, dragon, Yugoslav attack, Rauser variation10820.4%62.0%
C20King's pawn game4619.6%62.0%
E16Queen's Indian, Yates variation4628.3%62.0%
A85Dutch with c4 & Nc32119.0%61.9%
B87Sicilian, Sozin with ...a6 and ...b52128.6%61.9%
E53Nimzo-Indian, 4.e3, main line with ...c52119.0%61.9%
E94King's Indian, orthodox variation10526.7%61.9%
A05Reti, King's Indian attack, Spassky's variation2128.6%61.9%
E62King's Indian, fianchetto, Uhlmann (Szabo) variation1717.6%61.8%
B01Scandinavian (centre counter) defence21319.2%61.7%
E25Nimzo-Indian, Saemisch variation1315.4%61.5%
D46QGD semi-Slav, 6.Bd31330.8%61.5%
A46Queen's pawn, Yusupov-Rubinstein system3925.6%61.5%
D70Neo-Gruenfeld defence1315.4%61.5%
D82Gruenfeld, 4.Bf41330.8%61.5%
B32Sicilian defence4822.9%61.5%
D44QGD semi-Slav, anti-Meran, Alatortsev system2213.6%61.4%
B09Pirc, Austrian attack, 6.Bd33119.4%61.3%
A28English, four knights, Nimzovich variation6729.9%61.2%
E13Queen's Indian, 4.Nc3, main line933.3%61.1%
B42Sicilian, Kan, Gipslis variation933.3%61.1%
C33KGA, bishop's gambit, Bogolyubov variation911.1%61.1%
B99Sicilian, Najdorf, 7...Be7 main line2317.4%60.9%
E10Blumenfeld counter-gambit2317.4%60.9%
D34QGD, Tarrasch, Prague variation, Normal position31926.3%60.8%
C42Petrov three knights game7920.3%60.8%
A28English, four knights, Capablanca variation5614.3%60.7%
D90Gruenfeld, Flohr variation1421.4%60.7%
C60Ruy Lopez, Cozio defence287.1%60.7%
C19French, Winawer, advance, poisoned pawn variation163122.1%60.7%
A40Queen's pawn, Franco-Indian (Keres) defence8134.6%60.5%
C72Ruy Lopez, modern Steinitz defence, 5.O-O3426.5%60.3%
B19Caro-Kann, classical, Spassky variation154524.7%60.3%
C00Lengfellner system6420.3%60.2%
A10English, Anglo-Dutch defense8415.5%60.1%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.dc540.0%60.0%
B25Sicilian, closed, 6.Ne2 e5 (Botvinnik)50.0%60.0%
D30QGD Slav, Semmering variation50.0%60.0%
C69Ruy Lopez, exchange variation, Alapin gambit50.0%60.0%
A99Dutch, Ilyin-Genevsky variation with b3100.0%60.0%
E64King's Indian, fianchetto, Yugoslav system4015.0%60.0%
C31KGD, Nimzovich counter-gambit50.0%60.0%
C66Ruy Lopez, Berlin defence, hedgehog variation1540.0%60.0%
D48QGD semi-Slav, Meran, Pirc variation540.0%60.0%
D63QGD, Orthodox defence1020.0%60.0%
C59Two knights defence, Steinitz variation2030.0%60.0%
D97Gruenfeld, Russian variation with e41060.0%60.0%
B09Pirc, Austrian attack, 6.e550.0%60.0%
B01Scandinavian, Pytel-Wade variation2516.0%60.0%
C43Petrov, modern attack, Bardeleben variation540.0%60.0%
C03French, Tarrasch, Guimard variation5020.0%60.0%
C42Petrov, Kaufmann attack2030.0%60.0%
C52Evans gambit, Tartakower attack50.0%60.0%
A28English, four knights, Stean variation1020.0%60.0%
C48Four knights, Rubinstein counter-gambit, Henneberger variation1540.0%60.0%
B72Sicilian, dragon, classical attack540.0%60.0%
A36English, symmetrical, Botvinnik system540.0%60.0%
A20English, Nimzovich variation100.0%60.0%
A76Benoni, classical, 9...Re8100.0%60.0%
D97Gruenfeld, Russian, Alekhine (Hungarian) variation67724.4%59.9%
A81Dutch defence22324.7%59.9%
C15French, Winawer, Alekhine (Maroczy) gambit5616.1%59.8%
A56Benoni defence, Hromodka system33216.0%59.8%
A35English, symmetrical variation4126.8%59.8%
B08Pirc, classical system, 5.Be218032.8%59.7%
A40Queen's pawn, Keres defence6212.9%59.7%
C49Four knights, double Ruy Lopez13036.2%59.6%
C77Ruy Lopez, Wormald (Alapin) attack2123.8%59.5%
C97Ruy Lopez, closed, Chigorin defence4219.0%59.5%
C19French, Winawer, advance, poisoned pawn, Konstantinopolsky variation30522.0%59.5%
C15French, Winawer (Nimzovich) variation17232.6%59.3%
C16French, Winawer, advance variation16725.1%59.3%
B18Caro-Kann, classical, 6.h420024.5%59.3%
C58Two knights defence119.1%59.1%
A41Old Indian defence5512.7%59.1%
B06Robatsch defence, Pseudo-Austrian attack1127.3%59.1%
B13Caro-Kann, Panov-Botvinnik, Czerniak variation1181.8%59.1%
D97Gruenfeld, Russian, Szabo (Boleslavsky) variation119.1%59.1%
E92King's Indian, Gligoric-Taimanov system8326.5%59.0%
B41Sicilian, Kan variation2839.3%58.9%
B28Sicilian, O'Kelly variation7924.1%58.9%
C61Ruy Lopez, Bird's defence1711.8%58.8%
C46Four knights, Gunsberg variation1723.5%58.8%
B33Sicilian, Pelikan (Lasker/Sveshnikov) variation3411.8%58.8%
A15English, 1...Nf6 (Anglo-Indian defense)5123.5%58.8%
D87Gruenfeld, exchange, Spassky variation3447.1%58.8%
E91King's Indian, 6.Be210121.8%58.4%
C29Vienna gambit1216.7%58.3%
B60Sicilian, Richter-Rauzer, Bondarevsky variation616.7%58.3%
C12French, MacCutcheon variation2425.0%58.3%
D33QGD, Tarrasch, Folkestone (Swedish) variation120.0%58.3%
E34Nimzo-Indian, classical, Noa variation3638.9%58.3%
B15Caro-Kann, Alekhine gambit616.7%58.3%
A24English, Bremen system with ...g6616.7%58.3%
C96Ruy Lopez, closed (8...Na5)650.0%58.3%
C67Ruy Lopez, open Berlin defence, 5...Be7650.0%58.3%
E70King's Indian, Kramer system616.7%58.3%
E73King's Indian, 5.Be2616.7%58.3%
A40Queen's pawn, Lundin (Kevitz-Mikenas) defence2416.7%58.3%
D45QGD semi-Slav, Rubinstein (anti-Meran) system650.0%58.3%
E11Bogo-Indian defence, Nimzovich variation30620.6%58.3%
C41Philidor, Boden variation616.7%58.3%
A00Lasker simul special616.7%58.3%
A91Dutch defence2433.3%58.3%
C58Two knights defence, Kieseritsky variation650.0%58.3%
C12French, MacCutcheon, Lasker variation365.6%58.3%
C49Four knights1216.7%58.3%
A52Budapest, Rubinstein variation3622.2%58.3%
D17QGD Slav, Krause attack6622.7%58.3%
C10French, Frere (Becker) variation1216.7%58.3%
D01Richter-Veresov attack, Veresov variation650.0%58.3%
A13English, Neo-Catalan6720.9%58.2%
A06Reti opening50022.4%58.2%
A05Reti, King's Indian attack4918.4%58.2%
D19QGD Slav, Dutch variation69421.8%58.1%
C65Ruy Lopez, Berlin defence6232.3%58.1%
D25QGA, 4.e38721.8%58.0%
D45QGD semi-Slav, 5.e314422.9%58.0%
C50King's pawn game6917.4%58.0%
A43Old Benoni, Franco-Benoni defence1910.5%57.9%
D05Colle system1931.6%57.9%
D21QGA, 3.Nf310825.0%57.9%
D07QGD, Chigorin defence17219.2%57.8%
A50Queen's pawn game5125.5%57.8%
C04French, Tarrasch, Guimard main line5117.6%57.8%
C71Ruy Lopez, modern Steinitz defence, Duras (Keres) variation1323.1%57.7%
D29QGA, classical, Smyslov variation1323.1%57.7%
E76King's Indian, Four pawns attack1323.1%57.7%
A01Nimzovich-Larsen attack, symmetrical variation2615.4%57.7%
C47Four knights, Scotch variation2630.8%57.7%
A07Reti, King's Indian attack9217.4%57.6%
B12Caro-Kann defence27322.0%57.5%
B94Sicilian, Najdorf, 6.Bg52035.0%57.5%
A56Czech Benoni defence2035.0%57.5%
C57Two knights defence, Wilkes Barre (Traxler) variation2015.0%57.5%
D63QGD, Orthodox defence, Swiss (Henneberger) variation2025.0%57.5%
B38Sicilian, accelerated fianchetto, Maroczy bind, 6.Be36722.4%57.5%
A14English, Symmetrical, Keres defence20132.3%57.5%
C48Four knights, Rubinstein counter-gambit26819.4%57.5%
B49Sicilian, Taimanov variation18821.3%57.4%
D09QGD, Albin counter-gambit, 5.g32718.5%57.4%
E97King's Indian, orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation)87620.7%57.4%
A70Benoni, classical with e4 and Nf33420.6%57.4%
B00KP, Nimzovich defence10424.0%57.2%
C22Centre game, Paulsen attack70.0%57.1%
C86Ruy Lopez, Worrall attack728.6%57.1%
E76King's Indian, Four pawns attack, dynamic line728.6%57.1%
C92Ruy Lopez, closed, 9.h33522.9%57.1%
E19Queen's Indian, old main line, 9.Qxc314721.8%57.1%
D06QGD, Grau (Sahovic) defence4219.0%57.1%
D16QGD Slav, Steiner variation3528.6%57.1%
C41Philidor, Hanham, Krause variation757.1%57.1%
D24QGA, 4.Nc34223.8%57.1%
D70Neo-Gruenfeld (Kemeri) defence728.6%57.1%
A90Dutch defence12019.2%57.1%
E05Catalan, open, classical line9929.3%57.1%
D46QGD semi-Slav, Bogolyubov variation5736.8%57.0%
C42Petrov, classical attack, Jaenisch variation10728.0%57.0%
C42Petrov's defence26522.6%57.0%
A40Modern defence7917.7%57.0%
D52QGD, Cambridge Springs defence, Yugoslav variation5115.7%56.9%
E43Nimzo-Indian, Fischer variation2222.7%56.8%
C40QP counter-gambit (elephant gambit)2222.7%56.8%
C10French, Paulsen variation20727.5%56.8%
E62King's Indian, fianchetto, lesser Simagin (Spassky) variation3716.2%56.8%
D10QGD Slav, Winawer counter-gambit3721.6%56.8%
D80Gruenfeld defence1546.7%56.7%
D31QGD, semi-Slav, Abrahams variation1533.3%56.7%
C92Ruy Lopez, closed, Kholmov variation306.7%56.7%
D05Queen's pawn game, Zukertort variation1520.0%56.7%
E44Nimzo-Indian, Fischer variation, 5.Ne21520.0%56.7%
D88Gruenfeld, Spassky variation, main line, 10...cd, 11.cd1546.7%56.7%
D20QGA, 3.e446622.7%56.7%
D47QGD semi-Slav, neo-Meran (Lundin variation)21926.5%56.6%
E09Catalan, closed, main line7628.9%56.6%
B31Sicilian, Nimzovich-Rossolimo attack (with ...g6, without ...d6)17526.3%56.6%
C00French defence52720.9%56.5%
D44QGD semi-Slav, anti-Meran gambit30020.3%56.5%
B07Pirc, Ufimtsev-Pytel variation7714.3%56.5%
E18Queen's Indian, old main line, 7.Nc314126.2%56.4%
C50Giuoco Piano, four knights variation5525.5%56.4%
D14QGD Slav, exchange variation, 6.Bf4 Bf511821.2%56.4%
D17QGD Slav, Carlsbad variation7131.0%56.3%
A02Bird's opening, Swiss gambit812.5%56.3%
C82Ruy Lopez, open, St. Petersburg variation862.5%56.3%
B33Sicilian, Pelikan, Bird variation837.5%56.3%
B77Sicilian, dragon, Yugoslav attack, 9.Bc4812.5%56.3%
B12Caro-Kann, Tartakower (fantasy) variation4829.2%56.3%
D37QGD, 4.Nf390723.6%56.2%
B06Robatsch (modern) defence20419.1%56.1%
B12Caro-Kann, 3.Nd28219.5%56.1%
A43Old Benoni defence10720.6%56.1%
A30English, symmetrical, hedgehog system113227.3%56.1%
C09French, Tarrasch, open variation, main line62132.2%56.0%
B03Alekhine's defence, exchange variation2516.0%56.0%
D12QGD Slav, 4.e3 Bf540022.5%56.0%
E48Nimzo-Indian, 4.e3 O-O, 5.Bd3 d51729.4%55.9%
E59Nimzo-Indian, 4.e3, main line175.9%55.9%
D41QGD, Semi-Tarrasch, 5.cd18929.1%55.8%
C46Three knights, Steinitz variation4323.3%55.8%
C49Four knights, symmetrical variation4337.2%55.8%
C05French, Tarrasch, closed variation25820.9%55.8%
D74Neo-Gruenfeld, 6.cd Nxd5, 7.O-O5226.9%55.8%
C50Giuoco Pianissimo, Italian four knights variation13025.4%55.8%
C00St. George defence5219.2%55.8%
C14French, classical, Steinitz variation20022.5%55.8%
E38Nimzo-Indian, classical, 4...c53525.7%55.7%
B15Caro-Kann, Tartakower (Nimzovich) variation3537.1%55.7%
D23QGA, Mannheim variation4415.9%55.7%
D66QGD, Orthodox defence, Bd3 line5320.8%55.7%
B23Sicilian, Grand Prix attack5317.0%55.7%
B07Pirc defence11524.3%55.7%
D05Queen's pawn game32826.5%55.6%
E60King's Indian, 3.Nf360822.7%55.6%
C73Ruy Lopez, modern Steinitz defence, Richter variation944.4%55.6%
C67Ruy Lopez, open Berlin defence, l'Hermet variation922.2%55.6%
C80Ruy Lopez, open, Bernstein variation1822.2%55.6%
B62Sicilian, Richter-Rauzer, Margate (Alekhine) variation1833.3%55.6%
A10English opening41419.3%55.6%
C49Four knights, Nimzovich (Paulsen) variation944.4%55.6%
A18English, Mikenas-Carls, Kevitz variation90.0%55.6%
B02Alekhine's defence, Maroczy variation944.4%55.6%
C02French, advance variation37119.9%55.5%
B46Sicilian, Taimanov variation60723.7%55.5%
B44Sicilian, Szen (`anti-Taimanov') variation15726.8%55.4%
E11Bogo-Indian defence, Gruenfeld variation15925.2%55.3%
B10Caro-Kann, Two knights variation7528.0%55.3%
B56Sicilian24422.1%55.3%
A84Dutch defence, Rubinstein variation4734.0%55.3%
C19French, Winawer, advance, positional main line74723.8%55.3%
D47QGD semi-Slav, Meran variation16121.1%55.3%
B73Sicilian, dragon, classical, 8.O-O1915.8%55.3%
E66King's Indian, fianchetto, Yugoslav Panno10521.0%55.2%
B63Sicilian, Richter-Rauzer, Rauzer attack, 7...Be715416.9%55.2%
C30KGD, classical variation2920.7%55.2%
B15Caro-Kann, Gurgenidze system9822.4%55.1%
E10Queen's pawn game80525.7%55.1%
C66Ruy Lopez, Berlin defence, 4.O-O, d61010.0%55.0%
B26Sicilian, closed, 6.Be33016.7%55.0%
C60Ruy Lopez, Cozio defence, Paulsen variation1050.0%55.0%
B62Sicilian, Richter-Rauzer, Keres variation1030.0%55.0%
D10QGD Slav defence, Alekhine variation2020.0%55.0%
A17English, Nimzo-English opening1010.0%55.0%
C62Ruy Lopez, old Steinitz defence, Nimzovich attack1010.0%55.0%
D96Gruenfeld, Russian variation3023.3%55.0%
A33English, symmetrical variation20130.3%55.0%
A48King's Indian, London system14124.8%55.0%
B51Sicilian, Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack25225.8%55.0%
A07Reti, King's Indian attack, Yugoslav variation49127.5%54.9%
D26QGA, classical variation18721.9%54.8%
C00French, Reti (Spielmann) variation5217.3%54.8%
A39English, symmetrical, main line with d47321.9%54.8%
B50Sicilian50123.4%54.8%
B09Pirc, Austrian attack, dragon formation2142.9%54.8%
B13Caro-Kann, Panov-Botvinnik attack18022.8%54.7%
E67King's Indian, fianchetto, classical variation7524.0%54.7%
C01French, exchange variation42924.0%54.7%
B13Caro-Kann, exchange variation12920.9%54.7%
B10Caro-Kann defence37723.9%54.6%
D92Gruenfeld, 5.Bf410824.1%54.6%
B02Alekhine's defence, Scandinavian variation1118.2%54.5%
C18French, Winawer, classical variation12121.5%54.5%
D62QGD, Orthodox defence, 7.Qc2 c5, 8.cd (Rubinstein)3336.4%54.5%
A11English, Caro-Kann defensive system5529.1%54.5%
B06Robatsch defence, Two knights variation1136.4%54.5%
C74Ruy Lopez, modern Steinitz defence1154.5%54.5%
B27Sicilian, Hungarian variation17617.0%54.5%
C77Ruy Lopez, Morphy defence3318.2%54.5%
D02Queen's pawn game, Chigorin variation26523.8%54.5%
C46Four knights game16722.8%54.5%
D15QGD Slav, 4.Nc333619.6%54.5%
C55Two knights defence (Modern bishop's opening)10127.7%54.5%
D97Gruenfeld, Russian, Prins variation9028.9%54.4%
A34English, symmetrical, three knights system22524.4%54.4%
E15Queen's Indian, Nimzovich variation (exaggerated fianchetto)455225.0%54.4%
B30Sicilian, Nimzovich-Rossolimo attack (without ...d6)23920.9%54.4%
D11QGD Slav, 3.Nf341321.1%54.4%
D93Gruenfeld with Bf4 e34626.1%54.3%
A41Old Indian, Tartakower (Wade) variation6921.7%54.3%
A33English, symmetrical, Geller variation34621.4%54.3%
D94Gruenfeld, 5.e37025.7%54.3%
C00French, Labourdonnais variation4714.9%54.3%
B13Caro-Kann, exchange, Rubinstein variation1241.7%54.2%
B85Sicilian, Scheveningen, classical main line1225.0%54.2%
B15Caro-Kann, Forgacs variation1241.7%54.2%
C17French, Winawer, advance, Russian variation128.3%54.2%
B19Caro-Kann, classical, 7...Nd71225.0%54.2%
A96Dutch, classical variation2416.7%54.2%
C00French, Two knights variation3613.9%54.2%
B25Sicilian, closed1225.0%54.2%
A56Benoni defence6021.7%54.2%
A09Reti, advance variation8417.9%54.2%
E12Queen's Indian, Petrosian system96325.3%54.1%
B17Caro-Kann, Steinitz variation134125.0%54.1%
B34Sicilian, accelerated fianchetto, modern variation6113.1%54.1%
E39Nimzo-Indian, classical, Pirc variation4926.5%54.1%
D91Gruenfeld, 5.Bg517223.3%54.1%
C91Ruy Lopez, closed, 9.d4109725.7%54.1%
D98Gruenfeld, Russian, Smyslov variation3721.6%54.1%
C79Ruy Lopez, Steinitz defence deferred (Russian defence)3716.2%54.1%
D30Queen's gambit declined38525.5%54.0%
E49Nimzo-Indian, 4.e3, Botvinnik system2528.0%54.0%
D59QGD, Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd58835.2%54.0%
C11French, Steinitz, Boleslavsky variation75525.8%54.0%
A48King's Indian, East Indian defence13927.3%54.0%
A25English, closed system27926.2%53.9%
B06Robatsch defence, Two knights, Suttles variation5129.4%53.9%
D03Torre attack (Tartakower variation)20423.5%53.9%
A15English opening52922.7%53.9%
E63King's Indian, fianchetto, Panno variation37521.9%53.9%
D00Queen's pawn game20715.9%53.9%
C69Ruy Lopez, exchange, Gligoric variation5234.6%53.8%
C42Petrov, Italian variation1330.8%53.8%
C80Ruy Lopez, open, Riga variation1330.8%53.8%
A13English, Kurajica defence1315.4%53.8%
B89Sicilian, Sozin, 7.Be319816.7%53.8%
C03French, Tarrasch37122.9%53.8%
D47QGD semi-Slav, Meran, Wade variation551526.9%53.7%
C76Ruy Lopez, modern Steinitz defence, fianchetto (Bronstein) variation2733.3%53.7%
B04Alekhine's defence, modern variation2718.5%53.7%
C42Petrov, classical attack, Marshall variation16326.4%53.7%
E68King's Indian, fianchetto, classical variation, 8.e433124.5%53.6%
A21English opening20827.4%53.6%
D27QGA, classical, Rubinstein variation94528.0%53.6%
B74Sicilian, dragon, classical, 9.Nb31421.4%53.6%
B58Sicilian, Boleslavsky variation2821.4%53.6%
B22Sicilian, Alapin's variation (2.c3)88225.7%53.6%
C43Petrov, modern attack, main line5628.6%53.6%
E90King's Indian, Zinnowitz variation2828.6%53.6%
D00Queen's pawn, Mason variation32719.0%53.5%
C00French defence, Steiner variation15823.4%53.5%
A28English, four knights, Marini variation15829.7%53.5%
D38QGD, Ragozin variation41726.9%53.5%
D31QGD, 3.Nc37220.8%53.5%
A35English, symmetrical, four knights system54928.2%53.5%
B47Sicilian, Taimanov (Bastrikov) variation98426.8%53.5%
B04Alekhine's defence, modern, fianchetto variation2924.1%53.4%
C90Ruy Lopez, closed, Pilnik variation103523.6%53.4%
D10QGD Slav defence16225.3%53.4%
C02French, advance, Paulsen attack25417.7%53.3%
D45QGD semi-Slav, accelerated Meran (Alekhine variation)30022.0%53.3%
C17French, Winawer, advance, 5.a315022.7%53.3%
A84Dutch defence15021.3%53.3%
C46Three knights game4517.8%53.3%
B23Sicilian, closed22722.0%53.3%
B81Sicilian, Scheveningen, Keres attack31820.4%53.3%
B43Sicilian, Kan, 5.Nc313727.7%53.3%
D27QGA, classical, 6...a632227.6%53.3%
D18QGD Slav, Dutch variation9232.6%53.3%
C85Ruy Lopez, Exchange variation doubly deferred (DERLD)3129.0%53.2%
A47Queen's Indian defence4717.0%53.2%
A25English, Sicilian reversed12622.2%53.2%
D78Neo-Gruenfeld, 6.O-O c614223.2%53.2%
A12English, Caro-Kann defensive system1618.8%53.1%
D99Gruenfeld defence, Smyslov, main line1631.3%53.1%
C00French, Chigorin variation8122.2%53.1%
B10Caro-Kann, anti-anti-Caro-Kann defence26026.9%53.1%
C02French, advance, Wade variation3333.3%53.0%
C24Bishop's opening, Berlin defence9919.2%53.0%
E12Queen's Indian, Miles variation6618.2%53.0%
B70Sicilian, dragon variation3327.3%53.0%
C59Two knights defence5014.0%53.0%
B03Alekhine's defence18420.1%53.0%
D90Gruenfeld, Three knights variation6725.4%53.0%
A80Dutch20524.9%52.9%
C67Ruy Lopez, Berlin defence, open variation29427.6%52.9%
A04Reti opening85120.7%52.9%
B13Caro-Kann, Panov-Botvinnik, normal variation3525.7%52.9%
C53Giuoco Piano26321.3%52.9%
A46Queen's pawn game37322.0%52.8%
C42Petrov, classical attack23526.4%52.8%
E21Nimzo-Indian, three knights variation18119.3%52.8%
D02Queen's pawn game194222.1%52.8%
C07French, Tarrasch, open variation95128.7%52.7%
D00Queen's pawn, Chigorin variation56720.1%52.7%
C64Ruy Lopez, classical defence, 4.c33826.3%52.6%
E10Blumenfeld counter-gambit, Dus-Chotimursky variation1931.6%52.6%
E61King's Indian defence, 3.Nc39615.6%52.6%
D46QGD semi-Slav, Chigorin defence13520.7%52.6%
D35QGD, exchange, positional line, 5...c65832.8%52.6%
D13QGD Slav, exchange variation17424.7%52.6%
A38English, symmetrical variation13630.1%52.6%
C90Ruy Lopez, closed (with ...d6)78127.8%52.6%
C11French, Burn variation223727.3%52.5%
D30QGD, Capablanca-Duras variation5916.9%52.5%
B18Caro-Kann, classical variation13819.6%52.5%
B33Sicilian, Pelikan, Chelyabinsk variation9920.2%52.5%
B00King's pawn opening13920.1%52.5%
A55Old Indian, main line4020.0%52.5%
C26Vienna, Paulsen-Mieses variation12128.9%52.5%
E62King's Indian, fianchetto, Kavalek (Bronstein) variation8125.9%52.5%
E55Nimzo-Indian, 4.e3, Gligoric system, Bronstein variation59727.5%52.4%
B40Sicilian defence80322.7%52.4%
E15Queen's Indian, 4.g3 Bb76224.2%52.4%
C60Ruy Lopez (Spanish opening)219.5%52.4%
D32QGD, Tarrasch defence6322.2%52.4%
C55Two knights defence219.5%52.4%
C45Scotch, Mieses variation8428.6%52.4%
C17French, Winawer, advance, Bogolyubov variation4228.6%52.4%
A45Queen's pawn game46324.8%52.4%
B14Caro-Kann, Panov-Botvinnik attack, 5...e648527.6%52.4%
A06Reti, Nimzovich-Larsen attack31722.1%52.4%
E14Queen's Indian, 4.e327723.8%52.3%
C70Ruy Lopez, Classical defence deferred15026.0%52.3%
A45Trompovsky attack (Ruth, Opovcensky opening)24115.8%52.3%
E00Catalan opening38027.1%52.2%
D52QGD, Cambridge Springs defence, Bogoljubow variation9017.8%52.2%
D73Neo-Gruenfeld, 5.Nf313926.6%52.2%
E17Queen's Indian, old main line, 6.O-O4719.1%52.1%
D45QGD semi-Slav, Stoltz variation157524.0%52.1%
B36Sicilian, accelerated fianchetto, Gurgenidze variation2437.5%52.1%
C22Centre game, Berger variation2420.8%52.1%
D31QGD, semi-Slav7324.7%52.1%
E15Queen's Indian, 4.g37316.4%52.1%
C42Petrov, classical attack, Chigorin variation22030.5%52.0%
B21Sicilian, Smith-Morra gambit4914.3%52.0%
D31QGD, semi-Slav, Marshall gambit14817.6%52.0%
B35Sicilian, accelerated fianchetto, modern variation with Bc49927.3%52.0%
D04Queen's pawn game27422.3%52.0%
B07Pirc, Byrne variation2516.0%52.0%
D58QGD, Tartakower (Makagonov-Bondarevsky) system286328.7%52.0%
E90King's Indian, 5.Nf37718.2%51.9%
D48QGD semi-Slav, Meran10326.2%51.9%
B10Caro-Kann, anti-Caro-Kann defence18219.2%51.9%
A31English, symmetrical, Benoni formation33920.6%51.9%
B14Caro-Kann, Panov-Botvinnik attack, 5...g65324.5%51.9%
A30English, symmetrical variation119726.4%51.9%
B20Sicilian, Steinitz variation8119.8%51.9%
C10French, Fort Knox variation10921.1%51.8%
D33QGD, Tarrasch, Prague variation2817.9%51.8%
A46Queen's pawn, Torre attack11226.8%51.8%
B48Sicilian, Taimanov variation40226.9%51.7%
B12Caro-Kann, advance variation109322.6%51.7%
B83Sicilian, Scheveningen, 6.Be22941.4%51.7%
E60King's Indian, 3.g314823.6%51.7%
A36English, ultra-symmetrical variation6127.9%51.6%
A58Benko gambit accepted3119.4%51.6%
E20Nimzo-Indian, Kmoch variation6320.6%51.6%
C43Petrov, modern attack, Symmetrical variation41130.2%51.6%
B90Sicilian, Najdorf19122.5%51.6%
D35QGD, 3...Nf63336.4%51.5%
A00Benko's opening69322.7%51.4%
A05Reti opening62421.8%51.4%
E06Catalan, closed, 5.Nf363628.9%51.4%
D77Neo-Gruenfeld, 6.O-O7132.4%51.4%
D55QGD, Petrosian variation3641.7%51.4%
B30Sicilian defence39822.9%51.4%
B40Sicilian, Anderssen variation11123.4%51.4%
A42Pterodactyl defence3721.6%51.4%
D37QGD, classical variation (5.Bf4)99628.9%51.3%
D10QGD Slav defence, exchange variation11529.6%51.3%
E81King's Indian, Saemisch, 5...O-O7921.5%51.3%
A01Nimzovich-Larsen attack, Indian variation8017.5%51.3%
D31QGD, Charousek (Petrosian) variation12123.1%51.2%
A37English, symmetrical, Botvinnik system reversed8121.0%51.2%
B92Sicilian, Najdorf, Opovcensky variation48726.1%51.2%
C78Ruy Lopez, Moeller defence8426.2%51.2%
A00Dunst (Sleipner, Heinrichsen) opening16821.4%51.2%
C87Ruy Lopez, closed, Averbach variation4314.0%51.2%
E54Nimzo-Indian, 4.e3, Gligoric system with 7...dc4327.9%51.2%
C44Ponziani, Jaenisch counter-attack4843.8%51.0%
C06French, Tarrasch, closed variation, main line73326.7%51.0%
E01Catalan, closed4924.5%51.0%
E32Nimzo-Indian, classical variation87827.2%51.0%
B45Sicilian, Taimanov variation36325.3%51.0%
A13English, Wimpey system5221.2%51.0%
E00Queen's pawn game10620.8%50.9%
A01Nimzovich-Larsen attack5518.2%50.9%
A22English, Bremen, reverse dragon22230.6%50.9%
A01Nimzovich-Larsen attack, modern variation23024.3%50.9%
C42Petrov, Cozio (Lasker) attack11532.2%50.9%
C48Four knights, Spanish variation6217.7%50.8%
C08French, Tarrasch, open, 4.ed ed51530.5%50.8%
B01Scandinavian, Marshall variation6616.7%50.8%
B52Sicilian, Canal-Sokolsky attack, 3...Bd713629.4%50.7%
E04Catalan, open, 5.Nf391026.5%50.7%
B90Sicilian, Najdorf, Byrne (English) attack319622.7%50.7%
D17QGD Slav, Wiesbaden variation14723.8%50.7%
B36Sicilian, accelerated fianchetto, Maroczy bind7630.3%50.7%
D79Neo-Gruenfeld, 6.O-O, main line7731.2%50.6%
D25QGA, Janowsky-Larsen variation8124.7%50.6%
C00French, King's Indian attack18018.9%50.6%
E12Queen's Indian, 4.Nc348627.0%50.5%
C02French, advance, Euwe variation19516.9%50.5%
D02Queen's bishop game53222.7%50.5%
E92King's Indian, Petrosian system, Stein variation11024.5%50.5%
A20English opening144525.3%50.4%
C78Ruy Lopez, 5.O-O12824.2%50.4%
A07Reti, King's Indian attack (Barcza system)80721.4%50.4%
A28English, four knights, 4.e313622.8%50.4%
B23Sicilian, closed, 2...Nc613719.0%50.4%
B42Sicilian, Kan, 5.Bd314621.2%50.3%
C45Scotch, Schmidt variation16021.9%50.3%
D11QGD Slav, 4.e319522.6%50.3%
A50Kevitz-Trajkovich defence37428.6%50.1%
B84Sicilian, Scheveningen (Paulsen), classical variation93025.6%50.1%
C91Ruy Lopez, closed, Bogolyubov variation127926.8%50.1%
B03Alekhine's defence, O'Sullivan gambit20.0%50.0%
E26Nimzo-Indian, Saemisch, O'Kelly variation450.0%50.0%
D63QGD, Orthodox defence, 7.Rc11833.3%50.0%
A45Blackmar-Diemer gambit1323.1%50.0%
C33KGA, bishop's gambit, Cozio (Morphy) defence1100.0%50.0%
A45Canard opening1100.0%50.0%
C75Ruy Lopez, modern Steinitz defence, Rubinstein variation3100.0%50.0%
D42QGD, Semi-Tarrasch, 7.Bd37724.7%50.0%
E94King's Indian, orthodox, Donner variation1717.6%50.0%
C42Petrov, Paulsen attack2520.0%50.0%
D06QGD, Marshall defence40.0%50.0%
E80King's Indian, Saemisch variation119.1%50.0%
D43QGD semi-Slav90321.6%50.0%
C19French, Winawer, advance, 6...Ne74626.1%50.0%
B06Robatsch defence, three pawns attack1100.0%50.0%
A49King's Indian, fianchetto without c414226.8%50.0%
C31KGD, Falkbeer, 4.d31100.0%50.0%
E85King's Indian, Saemisch, orthodox variation333.3%50.0%
D30QGD, Capablanca variation1811.1%50.0%
C52Evans gambit, Lasker defence20.0%50.0%
E26Nimzo-Indian, Saemisch variation520.0%50.0%
B01Scandinavian defence, Gruenfeld variation20.0%50.0%
D55QGD, Neo-orthodox variation1100.0%50.0%
C31KGD, Falkbeer, 3...e41100.0%50.0%
A95Dutch, stonewall with Nc32100.0%50.0%
B40Sicilian, Pin variation (Sicilian counter-attack)20.0%50.0%
C67Ruy Lopez, Berlin defence, Winawer attack3100.0%50.0%
C88Ruy Lopez, closed, anti-Marshall 8.a43826.3%50.0%
A42Modern defence, Averbakh system, Randspringer variation1100.0%50.0%
B59Sicilian, Boleslavsky variation, 7.Nb3333.3%50.0%
E17Queen's Indian, 5.Bg2 Be760.0%50.0%
C70Ruy Lopez, Taimanov (chase/wing/accelerated counterthrust) variation1020.0%50.0%
C38King's knight's gambit20.0%50.0%
D16QGD Slav, Soultanbeieff variation1127.3%50.0%
D81Gruenfeld, Russian variation450.0%50.0%
A21English, Keres variation666.7%50.0%
E00Neo-Indian (Seirawan) attack5317.0%50.0%
B40Sicilian, Pin, Koch variation333.3%50.0%
C27Vienna, Alekhine variation520.0%50.0%
E60King's Indian defence4418.2%50.0%
B67Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 8...Bd727419.7%50.0%
C41Philidor, Hanham, Delmar variation1100.0%50.0%
A57Benko gambit half accepted3423.5%50.0%
C48Four knights, Spielmann variation1100.0%50.0%
C46Four knights, Italian variation10825.9%50.0%
D57QGD, Lasker defence, Bernstein variation20.0%50.0%
C19French, Winawer, advance, Smyslov variation140.0%50.0%
B12Caro-Masi defence1020.0%50.0%
D63QGD, Orthodox defence, Pillsbury attack20.0%50.0%
E23Nimzo-Indian, Spielmann, 4...c5, 5.dc Nc620.0%50.0%
E67King's Indian, fianchetto with ...Nd73633.3%50.0%
C79Ruy Lopez, Steinitz defence deferred, Lipnitsky variation333.3%50.0%
D00Blackmar-Diemer, Euwe defence1100.0%50.0%
C53Giuoco Piano, close variation40.0%50.0%
D21QGA, Alekhine defense, Borisenko-Furman variation633.3%50.0%
A63Benoni, fianchetto, 9...Nbd7333.3%50.0%
E45Nimzo-Indian, 4.e3, Bronstein (Byrne) variation825.0%50.0%
D12QGD Slav, exchange variation3327.3%50.0%
B90Sicilian, Najdorf, Adams attack20.0%50.0%
E15Queen's Indian, Rubinstein variation175.9%50.0%
A16English, Anglo-Gruenfeld, Smyslov defense1100.0%50.0%
C13French, classical, Anderssen-Richter variation20.0%50.0%
A41Queen's Pawn11613.8%50.0%
A67Benoni, Taimanov variation20.0%50.0%
C48Four knights, Rubinstein counter-gambit, 5.Be2520.0%50.0%
E99King's Indian, orthodox, Aronin-Taimanov, Benko attack1100.0%50.0%
C14French, classical, Alapin variation20.0%50.0%
C39KGA, Kieseritsky, Paulsen defence1100.0%50.0%
C65Ruy Lopez, Berlin defence, Anderssen variation1100.0%50.0%
E90King's Indian, Larsen variation1216.7%50.0%
E17Queen's Indian, Euwe variation333.3%50.0%
D57QGD, Lasker defence, main line825.0%50.0%
C00French, Schlechter variation9127.5%50.0%
C47Four knights, Scotch, 4...exd417129.8%50.0%
C45Scotch, Potter variation3321.2%50.0%
A17English, Queens Indian formation20.0%50.0%
A82Dutch, Staunton gambit, Tartakower variation1100.0%50.0%
C42Petrov, classical attack, Krause variation1100.0%50.0%
A59Benko gambit, 7.e41100.0%50.0%
C26Vienna game5614.3%50.0%
B80Sicilian, Scheveningen variation10318.4%50.0%
C48Four knights, Marshall variation333.3%50.0%
C42Petrov, classical attack, Mason variation450.0%50.0%
E84King's Indian, Saemisch, Panno main line850.0%50.0%
C82Ruy Lopez, open, Dilworth variation20.0%50.0%
D86Gruenfeld, exchange, Simagin's improved variation1100.0%50.0%
B54Sicilian12620.6%50.0%
C37KGA, MacDonnell gambit1100.0%50.0%
E47Nimzo-Indian, 4.e3 O-O, 5.Bd31457.1%50.0%
C83Ruy Lopez, open, classical defence633.3%50.0%
C39KGA, Kieseritsky, Rice gambit2100.0%50.0%
B02Alekhine's defence, Mokele Mbembe (Buecker) variation333.3%50.0%
B96Sicilian, Najdorf, Polugayevsky, Simagin variation20.0%50.0%
B75Sicilian, dragon, Yugoslav attack4131.7%50.0%
B03Alekhine's defence, four pawns attack, 7.Be3333.3%50.0%
B05Alekhine's defence, modern, Flohr variation1520.0%50.0%
C41Philidor, exchange variation6219.4%50.0%
C27Boden-Kieseritsky gambit140.0%50.0%
C49Four knights, symmetrical, Maroczy system633.3%50.0%
A32English, symmetrical variation1822.2%50.0%
D33QGD, Tarrasch, Schlechter-Rubinstein system520.0%50.0%
C51Evans gambit, normal variation714.3%50.0%
D22QGA, Alekhine defence, Alatortsev variation333.3%50.0%
E07Catalan, closed, 6...Nbd71428.6%50.0%
A25English, closed, Hort variation742.9%50.0%
D64QGD, Orthodox defence, Rubinstein attack, Karlsbad variation333.3%50.0%
C66Ruy Lopez, closed Berlin defence, Wolf variation1844.4%50.0%
A28English, four knights, Romanishin variation7929.1%50.0%
C44Tayler opening1100.0%50.0%
C17French, Winawer, advance variation2718.5%50.0%
C68Ruy Lopez, exchange variation5429.6%50.0%
B65Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9...Nxd41414.3%50.0%
B58Sicilian, Boleslavsky, Louma variation714.3%50.0%
C34KGA, Schallop defence1020.0%50.0%
C33KGA, bishop's gambit, Steinitz defence2100.0%50.0%
B44Sicilian, Szen variation, Dely-Kasparov gambit633.3%50.0%
E83King's Indian, Saemisch, 6...Nc6100.0%50.0%
A81Dutch, Leningrad, Karlsbad variation1100.0%50.0%
A80Dutch, Manhattan (Alapin, Ulvestad) variation20.0%50.0%
B00KP, Nimzovich defence, Marshall gambit20.0%50.0%
A12English, Torre defensive system333.3%50.0%
A77Benoni, classical, 9...Re8, 10.Nd21100.0%50.0%
C64Ruy Lopez, classical defence, Benelux variation 2931.0%50.0%
D31QGD, Janowski variation333.3%50.0%
C53Giuoco Piano, LaBourdonnais variation742.9%50.0%
C23Bishop's opening, Philidor variation633.3%50.0%
E33Nimzo-Indian, classical, 4...Nc6933.3%50.0%
B01Scandinavian defence, Lasker variation20.0%50.0%
C39KGA, Kieseritsky, Berlin defence, 6.Bc41414.3%50.0%
C25Vienna game, Max Lange defence1233.3%50.0%
C51Evans gambit declined, 5.a480.0%50.0%
C78Ruy Lopez, ...b5 & ...d620.0%50.0%
C77Ruy Lopez, Morphy defence, Duras variation666.7%50.0%
B52Sicilian, Canal-Sokolsky attack, Sokolsky variation8133.3%50.0%
A07Reti, King's Indian attack, Keres variation3333.3%50.0%
B91Sicilian, Najdorf, Zagreb (fianchetto) variation3026.7%50.0%
B01Scandinavian, Richter variation20.0%50.0%
C58Two knights defence, Yankovich variation20.0%50.0%
C13French, classical20.0%50.0%
D52QGD, Cambridge Springs defence, Argentine variation520.0%50.0%
D00Queen's pawn, stonewall attack1100.0%50.0%
C24Bishop's opening, Urusov gambit, Panov variation520.0%50.0%
B39Sicilian, accelerated fianchetto, Breyer variation3141.9%50.0%
D61QGD, Orthodox defence, Rubinstein variation4422.7%50.0%
C89Ruy Lopez, Marshall counter-attack2512.0%50.0%
C12French, MacCutcheon, Chigorin variation1100.0%50.0%
B03Alekhine's defence, four pawns attack40.0%50.0%
A92Dutch defence20.0%50.0%
A25English, closed, Taimanov variation1100.0%50.0%
C89Ruy Lopez, Marshall, main line, 14...Qh320.0%50.0%
A12English, Bled variation333.3%50.0%
A29English, four knights, kingside fianchetto250829.1%49.8%
C50Giuoco Pianissimo22324.2%49.8%
B01Scandinavian defence14023.6%49.6%
C12French, MacCutcheon, Lasker variation, 8...g622418.8%49.6%
B11Caro-Kann, Two knights, 3...Bg410019.0%49.5%
E94King's Indian, orthodox, 7...Nbd79831.6%49.5%
C02French, advance, Steinitz variation8532.9%49.4%
D45QGD semi-Slav, 5...Nd716620.5%49.4%
E11Bogo-Indian defence24128.2%49.4%
C45Scotch game30122.3%49.3%
A40Queen's pawn22022.3%49.3%
B10Caro-Kann, closed (Breyer) variation14525.5%49.3%
E58Nimzo-Indian, 4.e3, main line with 8...Bxc37128.2%49.3%
B53Sicilian, Chekhover variation7035.7%49.3%
A23English, Bremen system, Keres variation6726.9%49.3%
A25English, closed, 5.Rb16723.9%49.3%
A13English opening24322.6%49.2%
A53Old Indian defence17924.6%49.2%
C10French, Rubinstein variation50325.0%49.1%
D44QGD semi-Slav, 5.Bg5 dc5026.0%49.0%
B82Sicilian, Scheveningen, 6.f44924.5%49.0%
D56QGD, Lasker defence9625.0%49.0%
D01Richter-Veresov attack20926.8%48.8%
A02Bird's opening4114.6%48.8%
B15Caro-Kann defence12019.2%48.8%
D20Queen's gambit accepted11925.2%48.7%
D86Gruenfeld, exchange, classical variation7921.5%48.7%
E41Nimzo-Indian, 4.e3 c53517.1%48.6%
B00KP, Nimzovich defence, Bogolyubov variation3426.5%48.5%
D85Gruenfeld, modern exchange variation59830.8%48.5%
C44Scotch, Goering gambit3318.2%48.5%
E42Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein)9825.5%48.5%
C68Ruy Lopez, exchange, Keres variation3234.4%48.4%
E52Nimzo-Indian, 4.e3, main line with ...b63221.9%48.4%
B20Sicilian defence15822.2%48.4%
A07Reti, King's Indian attack (with ...c5)6225.8%48.4%
D41QGD, Semi-Tarrasch with e33119.4%48.4%
E62King's Indian, fianchetto variation3132.3%48.4%
C11French, Steinitz variation24719.0%48.4%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc33043.3%48.3%
B25Sicilian, closed, 6.f4 e5 (Botvinnik)3023.3%48.3%
A48King's Indian, Torre attack11820.3%48.3%
D29QGA, classical, 8...Bb717623.9%48.3%
A22English opening11426.3%48.2%
A21English, Kramnik-Shirov counterattack8328.9%48.2%
D47QGD semi-Slav, 7.Bc4559.1%48.2%
B93Sicilian, Najdorf, 6.f45422.2%48.1%
D48QGD semi-Slav, Meran, 8...a6111225.1%48.1%
A20English, Nimzovich, Flohr variation5113.7%48.0%
B90Sicilian, Najdorf, Lipnitzky attack5125.5%48.0%
B95Sicilian, Najdorf, 6...e62540.0%48.0%
D30QGD Slav7529.3%48.0%
B37Sicilian, accelerated fianchetto, Maroczy bind, 5...Bg72429.2%47.9%
B08Pirc, classical (two knights) system7220.8%47.9%
C63Ruy Lopez, Schliemann defence, Berger variation2412.5%47.9%
C88Ruy Lopez, closed, 7...O-O9429.8%47.9%
B66Sicilian, Richter-Rauzer, Rauzer attack, 7...a6280820.6%47.9%
D26QGA, 4...e627126.2%47.8%
A00Saragossa opening6711.9%47.8%
E17Queen's Indian, anti-Queen's Indian system2231.8%47.7%
D49QGD semi-Slav, Meran, Blumenfeld variation4316.3%47.7%
A22English, Bremen, Smyslov system48428.3%47.6%
C25Vienna, Paulsen variation2138.1%47.6%
C84Ruy Lopez, closed, centre attack2128.6%47.6%
A57Benko gambit4214.3%47.6%
B57Sicilian, Sozin, Benko variation10521.0%47.6%
B83Sicilian, modern Scheveningen12421.0%47.6%
D40QGD, Semi-Tarrasch defence30830.8%47.6%
D00Levitsky attack (Queen's bishop attack)26420.8%47.5%
C25Vienna game6018.3%47.5%
A08Reti, King's Indian attack10019.0%47.5%
B29Sicilian, Nimzovich-Rubinstein variation2035.0%47.5%
B72Sicilian, dragon, 6.Be32015.0%47.5%
A34English, symmetrical variation21818.8%47.5%
A60Benoni defence1910.5%47.4%
E35Nimzo-Indian, classical, Noa variation, 5.cd ed5724.6%47.4%
C68Ruy Lopez, exchange, Alekhine variation1921.1%47.4%
C42Petrov, Nimzovich attack10932.1%47.2%
D60QGD, Orthodox defence1816.7%47.2%
A16English opening1827.8%47.2%
C48Four knights, Rubinstein counter-gambit, exchange variation3622.2%47.2%
A26English, Botvinnik system7121.1%47.2%
D02Queen's pawn game, Krause variation14126.2%47.2%
C69Ruy Lopez, exchange variation, 5.O-O3514.3%47.1%
C43Petrov, modern attack, Trifunovic variation3525.7%47.1%
D53QGD, 4.Bg5 Be73537.1%47.1%
B24Sicilian, closed6921.7%47.1%
C49Four knights, symmetrical, Metger unpin10326.2%47.1%
A10English, Adorjan defence1735.3%47.1%
C23Bishop's opening5119.6%47.1%
B02Alekhine's defence1711.8%47.1%
B57Sicilian, Sozin, not Scheveningen1723.5%47.1%
B80Sicilian, Scheveningen, Vitolins variation166.3%46.9%
B80Sicilian, Scheveningen, fianchetto variation3218.8%46.9%
C84Ruy Lopez, closed defence4729.8%46.8%
D28QGA, classical, 7...b54725.5%46.8%
C44Scotch gambit, Dubois-Reti defence4734.0%46.8%
C20Alapin's opening3122.6%46.8%
E08Catalan, closed, Qc2 & b34517.8%46.7%
E70King's Indian, 4.e41540.0%46.7%
A27English, three knights system2835.7%46.4%
C50Hungarian defence1450.0%46.4%
C47Four knights, Belgrade gambit2711.1%46.3%
C62Ruy Lopez, old Steinitz defence3920.5%46.2%
B60Sicilian, Richter-Rauzer2630.8%46.2%
C33KGA, bishop's gambit, Jaenisch variation1315.4%46.2%
B42Sicilian, Kan, Polugaievsky variation7621.1%46.1%
C02French, advance, Nimzovich system7610.5%46.1%
D30QGD, Hastings variation7522.7%46.0%
D39QGD, Ragozin, Vienna variation14927.5%46.0%
C69Ruy Lopez, exchange, Bronstein variation3732.4%45.9%
E10Dzindzikhashvili defence2416.7%45.8%
B58Sicilian, classical1241.7%45.8%
B85Sicilian, Scheveningen, classical1241.7%45.8%
C70Ruy Lopez, Schliemann defence deferred128.3%45.8%
D15QGD Slav, 5.e3 (Alekhine variation)2416.7%45.8%
D44QGD semi-Slav, Botvinnik system (anti-Meran)4723.4%45.7%
B60Sicilian, Richter-Rauzer, Larsen variation2321.7%45.7%
C51Evans gambit, Cordel variation1118.2%45.5%
D20QGA, Linares variation1118.2%45.5%
E30Nimzo-Indian, Leningrad variation4413.6%45.5%
D22QGA, Alekhine defence2020.0%45.0%
D36QGD, exchange, positional line, 6.Qc21030.0%45.0%
A38English, symmetrical, main line with d31030.0%45.0%
D64QGD, Orthodox defence, Rubinstein attack (with Rc1)1030.0%45.0%
A03Bird's opening3912.8%44.9%
D30QGD10728.0%44.9%
A80Dutch, 2.Bg5 variation4721.3%44.7%
B97Sicilian, Najdorf, 7...Qb614919.5%44.6%
C80Ruy Lopez, open, 8...Be622829.4%44.5%
C49Four knights, symmetrical, Pillsbury variation922.2%44.4%
A36English, symmetrical variation2722.2%44.4%
C86Ruy Lopez, Worrall attack, sharp line1833.3%44.4%
C57Two knights defence, Ulvestad variation922.2%44.4%
D12QGD Slav, Amsterdam variation944.4%44.4%
A25English, closed system (without ...d6)1833.3%44.4%
C46Four knights, Schultze-Mueller gambit944.4%44.4%
E53Nimzo-Indian, 4.e3, Keres variation922.2%44.4%
B97Sicilian, Najdorf, Poisoned pawn variation39719.4%44.2%
C80Ruy Lopez, open (Tarrasch) defence1729.4%44.1%
D21QGA, Ericson variation1752.9%44.1%
D15QGD Slav, Tolush-Geller gambit1729.4%44.1%
E95King's Indian, orthodox, 7...Nbd7, 8.Re13423.5%44.1%
C41Philidor, Improved Hanham variation10114.9%44.1%
A26English, closed system3315.2%43.9%
B96Sicilian, Najdorf, 7.f42429.2%43.8%
B40Sicilian, Marshall variation812.5%43.8%
B32Sicilian, Labourdonnais-Loewenthal (Kalashnikov) variation2437.5%43.8%
C77Ruy Lopez, Anderssen variation5626.8%43.8%
C86Ruy Lopez, Worrall attack, solid line2437.5%43.8%
A92Dutch, stonewall with Nc3812.5%43.8%
E61King's Indian, Smyslov system837.5%43.8%
E51Nimzo-Indian, 4.e3, Ragozin variation1650.0%43.8%
E70King's Indian, accelerated Averbakh system837.5%43.8%
B55Sicilian, Prins variation, Venice attack812.5%43.8%
C11French, Swiss variation3218.8%43.8%
E92King's Indian, Petrosian system812.5%43.8%
D94Gruenfeld, Opovcensky variation812.5%43.8%
B44Sicilian defence9423.4%43.6%
B80Sicilian, Scheveningen, English variation3920.5%43.6%
D25QGA, Smyslov variation3135.5%43.5%
D00Queen's pawn, Mason variation, Steinitz counter-gambit3818.4%43.4%
A01Nimzovich-Larsen attack, English variation3033.3%43.3%
C56Two knights defence156.7%43.3%
B89Sicilian, Velimirovic attack8218.3%43.3%
E20Nimzo-Indian, Romanishin-Kasparov (Steiner) system7418.9%43.2%
D11QGD Slav, Breyer variation2231.8%43.2%
B01Scandinavian, Icelandic gambit2231.8%43.2%
E62King's Indian, fianchetto with ...Nc62222.7%43.2%
D31QGD, semi-Slav, Noteboom variation2231.8%43.2%
D35QGD, exchange, positional line10114.9%43.1%
B54Sicilian, Prins (Moscow) variation7126.8%43.0%
D15QGD Slav, Schlechter variation7126.8%43.0%
E83King's Indian, Saemisch, Panno formation70.0%42.9%
E51Nimzo-Indian, 4.e3 e8g8, 5.Nf3 d7d51428.6%42.9%
D35QGD, exchange variation5621.4%42.9%
D40QGD, Semi-Tarrasch defence, Pillsbury variation757.1%42.9%
C52Evans gambit728.6%42.9%
D01Richter-Veresov attack, Richter variation70.0%42.9%
B33Sicilian, Sveshnikov variation728.6%42.9%
A13English opening, Agincourt variation14020.0%42.9%
C54Giuoco Piano1414.3%42.9%
A89Dutch, Leningrad, main variation with Nc61428.6%42.9%
E65King's Indian, fianchetto, Yugoslav, 7.O-O3426.5%42.6%
B25Sicilian, closed, 6.f43414.7%42.6%
C27Vienna game2718.5%42.6%
A19English, Mikenas-Carls, Sicilian variation2711.1%42.6%
A88Dutch, Leningrad, main variation with c64623.9%42.4%
D85Gruenfeld, exchange variation9825.5%42.3%
C45Scotch, Horwitz attack1323.1%42.3%
D94Gruenfeld, Smyslov defence1323.1%42.3%
D27QGA, classical, Geller variation1323.1%42.3%
C48Four knights, Spanish, classical defence3228.1%42.2%
C78Ruy Lopez, Archangelsk (counterthrust) variation7032.9%42.1%
C15French, Winawer, Alekhine gambit, Kan variation2512.0%42.0%
C88Ruy Lopez, closed4918.4%41.8%
B13Caro-Kann, Panov-Botvinnik, Herzog defence616.7%41.7%
B61Sicilian, Richter-Rauzer, Larsen variation, 7.Qd2185.6%41.7%
C12French, MacCutcheon, Dr. Olland (Dutch) variation616.7%41.7%
A87Dutch, Leningrad, main variation3016.7%41.7%
B21Sicilian, Grand Prix attack12623.0%41.7%
E25Nimzo-Indian, Saemisch, Romanovsky variation616.7%41.7%
C89Ruy Lopez, Marshall, main line, 12.d2d41216.7%41.7%
B63Sicilian, Richter-Rauzer, Rauzer attack1816.7%41.7%
C31KGD, Falkbeer counter-gambit616.7%41.7%
C44Ponziani opening1838.9%41.7%
E02Catalan, open, 5.Qa4650.0%41.7%
D16QGD Slav, Smyslov variation616.7%41.7%
C44Ponziani, Caro variation616.7%41.7%
C50Giuoco Pianissimo, Canal variation4119.5%41.5%
B33Sicilian defence6429.7%41.4%
D08QGD, Albin counter-gambit3423.5%41.2%
D80Gruenfeld, Stockholm variation3423.5%41.2%
E92King's Indian, Andersson variation2218.2%40.9%
A28English, Bradley Beach variation1127.3%40.9%
E25Nimzo-Indian, Saemisch, Keres variation2714.8%40.7%
D26QGA, classical variation, 6.O-O2722.2%40.7%
B02Alekhine's defence, Two pawns' (Lasker's) attack1631.3%40.6%
A01Nimzovich-Larsen attack, classical variation9030.0%40.6%
B04Alekhine's defence, modern, Larsen variation2114.3%40.5%
C53Giuoco Piano, Bird's attack2123.8%40.5%
E12Queen's Indian defence2642.3%40.4%
C65Ruy Lopez, Berlin defence, Beverwijk variation3625.0%40.3%
B01Scandinavian gambit4619.6%40.2%
E69King's Indian, fianchetto, classical main line2040.0%40.0%
E56Nimzo-Indian, 4.e3, main line with 7...Nc61513.3%40.0%
B71Sicilian, dragon, Levenfish variation50.0%40.0%
C71Ruy Lopez, modern Steinitz defence540.0%40.0%
A73Benoni, classical, 9.O-O50.0%40.0%
B98Sicilian, Najdorf, 7...Be750.0%40.0%
C92Ruy Lopez, closed, Keres (9...a5) variation50.0%40.0%
B23Sicilian, chameleon variation2516.0%40.0%
A65Benoni, 6.e4540.0%40.0%
E36Nimzo-Indian, classical, Noa variation, 5.a3540.0%40.0%
C23Bishop's opening, Classical variation1513.3%40.0%
C96Ruy Lopez, closed, Borisenko defence540.0%40.0%
A16English, Anglo-Gruenfeld defense540.0%40.0%
A01Nimzovich-Larsen attack, Dutch variation1513.3%40.0%
E73King's Indian, Averbakh system1526.7%40.0%
C60Ruy Lopez, fianchetto (Smyslov/Barnes) defence4030.0%40.0%
A12English, New York (London) defensive system50.0%40.0%
D60QGD, Orthodox defence, Botvinnik variation1020.0%40.0%
B76Sicilian, dragon, Yugoslav attack, 7...O-O17225.0%39.8%
B20Sicilian, Keres variation (2.Ne2)3414.7%39.7%
C11French defence10518.1%39.5%
E71King's Indian, Makagonov system (5.h3)1926.3%39.5%
A83Dutch, Staunton gambit, Staunton's line1915.8%39.5%
E10Blumenfeld counter-gambit accepted1421.4%39.3%
D63QGD, Orthodox defence, Swiss, Karlsbad variation147.1%39.3%
B88Sicilian, Sozin, Leonhardt variation5527.3%39.1%
C42Petrov, Cochrane gambit911.1%38.9%
C36KGA, Abbazia defence, modern variation2718.5%38.9%
B68Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 9...Be7911.1%38.9%
E40Nimzo-Indian, 4.e3, Taimanov variation1811.1%38.9%
B09Pirc, Austrian attack3520.0%38.6%
E41Nimzo-Indian, e3, Huebner variation4814.6%38.5%
A22English, Carls' Bremen system6924.6%38.4%
D15QGD Slav, Slav gambit2528.0%38.0%
B62Sicilian, Richter-Rauzer, Podvebrady variation425.0%37.5%
C43Petrov, modern attack, Steinitz variation425.0%37.5%
C29Vienna gambit, Paulsen attack425.0%37.5%
C24Bishop's opening, Urusov gambit425.0%37.5%
B29Sicilian, Nimzovich-Rubinstein; Rubinstein counter-gambit425.0%37.5%
A36English, symmetrical, Botvinnik system reversed1241.7%37.5%
E24Nimzo-Indian, Saemisch variation1225.0%37.5%
B10Caro-Kann, Goldman (Spielmann) variation425.0%37.5%
B52Sicilian, Canal-Sokolsky attack, Bronstein gambit2825.0%37.5%
E29Nimzo-Indian, Saemisch, main line825.0%37.5%
E46Nimzo-Indian, 4.e3 O-O425.0%37.5%
C88Ruy Lopez, Trajkovic counter-attack1612.5%37.5%
D94Gruenfeld, Makogonov variation825.0%37.5%
A57Benko gambit, Zaitsev system425.0%37.5%
C45Scotch, Blackburne attack425.0%37.5%
B53Sicilian, Chekhover, Zaitsev variation425.0%37.5%
C49Four knights, Janowski variation425.0%37.5%
C70Ruy Lopez1225.0%37.5%
C33KGA, bishop's gambit, Paulsen attack425.0%37.5%
C13French, Albin-Alekhine-Chatard attack, Maroczy variation475.0%37.5%
B23Sicilian, closed, Korchnoi variation825.0%37.5%
C45Scotch, Pulling counter-attack825.0%37.5%
D71Neo-Gruenfeld, 5.cd475.0%37.5%
C73Ruy Lopez, modern Steinitz defence, Alapin variation1533.3%36.7%
E22Nimzo-Indian, Spielmann variation1118.2%36.4%
C44Scotch, Relfsson gambit ('MacLopez')1118.2%36.4%
A45Paleface attack4017.5%36.3%
C44Dresden opening1827.8%36.1%
A82Dutch, Staunton gambit1428.6%35.7%
C44Scotch gambit714.3%35.7%
C18French, Winawer, advance variation714.3%35.7%
C16French, Winawer, Petrosian variation2010.0%35.0%
A08Reti, King's Indian attack, French variation1010.0%35.0%
D44QGD semi-Slav, anti-Meran, Szabo variation1010.0%35.0%
D24QGA, Bogolyubov variation1618.8%34.4%
B62Sicilian, Richter-Rauzer, 6...e62222.7%34.1%
C34KGA, Fischer defence2810.7%33.9%
B98Sicilian, Najdorf variation3718.9%33.8%
E74King's Indian, Averbakh, 6...c530.0%33.3%
C45Scotch, Meitner variation30.0%33.3%
C74Ruy Lopez, Siesta, Kopayev variation922.2%33.3%
A61Benoni, fianchetto variation633.3%33.3%
C33KGA, bishop's gambit60.0%33.3%
C74Ruy Lopez, modern Steinitz defence, siesta variation366.7%33.3%
C89Ruy Lopez, Marshall counter-attack, 11...c61540.0%33.3%
C56Two knights defence, Canal variation30.0%33.3%
E46Nimzo-Indian, Simagin variation30.0%33.3%
D08QGD, Albin counter-gambit, Alapin variation30.0%33.3%
C25Vienna gambit30.0%33.3%
C48Four knights, Ranken variation944.4%33.3%
E97King's Indian, orthodox, Aronin-Taimanov, bayonet attack30.0%33.3%
E81King's Indian, Saemisch, Byrne variation30.0%33.3%
A12English, Capablanca's variation60.0%33.3%
C44Scotch opening90.0%33.3%
D51QGD, Alekhine variation30.0%33.3%
C14French, classical, Pollock variation30.0%33.3%
A69Benoni, four pawns attack, main line30.0%33.3%
B07Pirc, bayonet (Mariotti) attack30.0%33.3%
C13French, classical, Anderssen variation60.0%33.3%
C00French, Reversed Philidor formation60.0%33.3%
D35QGD, Harrwitz attack30.0%33.3%
C80Ruy Lopez, open, Tartakower variation30.0%33.3%
D97Gruenfeld, Russian, Byrne (Simagin) variation248.3%33.3%
C51Evans gambit declined, Cordel variation366.7%33.3%
A44Semi-Benoni (`blockade variation')812.5%31.3%
B45Sicilian, Taimanov, American attack837.5%31.3%
C00French, Pelikan variation1625.0%31.3%
C57Two knights defence1816.7%30.6%
D65QGD, Orthodox defence, Rubinstein attack, main line520.0%30.0%
A14English, Neo-Catalan declined520.0%30.0%
D59QGD, Tartakower variation520.0%30.0%
C14French, classical variation1020.0%30.0%
A94Dutch, stonewall with Ba3560.0%30.0%
C57Two knights defence, Fegatello attack520.0%30.0%
D31QGD, Alapin variation128.3%29.2%
D40QGD, Semi-Tarrasch, symmetrical variation1414.3%28.6%
B86Sicilian, Sozin attack1414.3%28.6%
C33KGA, bishop's gambit, Bledow variation728.6%28.6%
D28QGA, classical, 7.Qe21428.6%28.6%
C44Inverted Hungarian728.6%28.6%
C43Petrov, Urusov gambit70.0%28.6%
C68Ruy Lopez, exchange, Romanovsky variation616.7%25.0%
A52Budapest, Alekhine variation250.0%25.0%
C32KGD, Falkbeer, main line, 7...Bf5250.0%25.0%
D50QGD, Semi-Tarrasch, Krause variation250.0%25.0%
C35KGA, Cunningham, Euwe defence40.0%25.0%
A12English, London defensive system616.7%25.0%
B84Sicilian, Scheveningen, classical, Nd7 system40.0%25.0%
C20KP, Indian opening1216.7%25.0%
E27Nimzo-Indian, Saemisch variation450.0%25.0%
C34KGA, Becker defence80.0%25.0%
C37KGA, Salvio gambit250.0%25.0%
C58Two knights defence, Bogolyubov variation40.0%25.0%
C37KGA, Muzio gambit, From defence250.0%25.0%
B72Sicilian, dragon, classical, Amsterdam variation40.0%25.0%
C33KGA, bishop's gambit, classical defence250.0%25.0%
E54Nimzo-Indian, 4.e3, Gligoric system, Smyslov variation40.0%25.0%
C17French, Winawer, advance, Rauzer variation250.0%25.0%
C52Evans gambit, compromised defence250.0%25.0%
C41Philidor, Hanham variation450.0%25.0%
D51QGD, 4.Bg5 Nbd7825.0%25.0%
C61Ruy Lopez, Bird's defence, Paulsen variation40.0%25.0%
C23Bishop's opening, Lewis gambit250.0%25.0%
D32QGD, Tarrasch defence, 4.cd ed250.0%25.0%
C42Petrov, French attack40.0%25.0%
A43Old Benoni, Schmid's system250.0%25.0%
D49QGD semi-Slav, Meran, Sozin variation2313.0%23.9%
C44Ponziani counter-gambit119.1%22.7%
E15Queen's Indian, Buerger variation50.0%20.0%
E72King's Indian with e4 & g350.0%20.0%
C34King's knight's gambit50.0%20.0%
C33KGA, Carrera (Basman) gambit837.5%18.8%
D50QGD, Semi-Tarrasch, Primitive Pillsbury variation911.1%16.7%
C44Inverted Hanham633.3%16.7%
C35KGA, Cunningham defence60.0%16.7%
E28Nimzo-Indian, Saemisch variation333.3%16.7%
C80Ruy Lopez, open, 7.Bb3633.3%16.7%
A06Reti, old Indian attack60.0%16.7%
A80Dutch, Spielmann gambit333.3%16.7%
C25Vienna, Pierce gambit60.0%16.7%
B27Sicilian, Acton extension333.3%16.7%
C33KGA, Villemson (Steinitz) gambit425.0%12.5%
A00Benko's opening, reversed Alekhine425.0%12.5%
C33KGA, Breyer gambit520.0%10.0%
C44Scotch, Goering gambit, Bardeleben variation10.0%0.0%
D51QGD10.0%0.0%
C37KGA, Silberschmidt gambit10.0%0.0%
C55Two knights, Max Lange attack20.0%0.0%
A12English, Caro-Kann defensive system, Bogolyubov variation10.0%0.0%
E60King's Indian, 3.g3, counterthrust variation10.0%0.0%
C23Bishop's opening, Lewis counter-gambit10.0%0.0%
E30Nimzo-Indian, Leningrad, ...b5 gambit20.0%0.0%
C00French, Wing gambit10.0%0.0%
C89Ruy Lopez, Marshall, Kevitz variation10.0%0.0%
A46Queen's pawn, Torre attack, Wagner gambit10.0%0.0%
C48Four knights, Rubinstein counter-gambit, Bogolyubov variation10.0%0.0%
D64QGD, Orthodox defence, Rubinstein attack, Gruenfeld variation10.0%0.0%
B02Alekhine's defence, Steiner variation10.0%0.0%
C37KGA, Muzio gambit20.0%0.0%
A03Mujannah opening10.0%0.0%
C33KGA, bishop's gambit, Lopez-Gianutio counter-gambit20.0%0.0%
E36Nimzo-Indian, classical, Botvinnik variation10.0%0.0%
B03Alekhine's defence, four pawns attack, Trifunovic variation30.0%0.0%
C57Two knights defence, Fegatello attack, Leonhardt variation20.0%0.0%
E12Queen's Indian, 4.Nc3, Botvinnik variation10.0%0.0%
C37KGA, Quaade gambit50.0%0.0%
D51QGD, Manhattan variation10.0%0.0%
C02French, advance, Nimzovich variation20.0%0.0%
D32QGD, Tarrasch defence, Tarrasch gambit10.0%0.0%
C30KGD, 2...Nf610.0%0.0%
C33KGA, bishop's gambit, Boren-Svenonius variation10.0%0.0%
C38KGA, Hanstein gambit20.0%0.0%
C66Ruy Lopez, closed Berlin defence, Bernstein variation10.0%0.0%
A25English, closed, 5.Rb1 Taimanov variation10.0%0.0%
C39KGA, Kieseritsky, Berlin defence10.0%0.0%
A68Benoni, four pawns attack10.0%0.0%
A38English, symmetrical, main line with b310.0%0.0%
C51Evans gambit declined10.0%0.0%
C82Ruy Lopez, open, Motzko attack, Nenarokov variation10.0%0.0%
C07French, Tarrasch, Eliskases variation10.0%0.0%
C51Evans gambit, Steinitz variation10.0%0.0%
E24Nimzo-Indian, Saemisch, Botvinnik variation10.0%0.0%
A98Dutch, Ilyin-Genevsky variation with Qc220.0%0.0%
A05Reti, King's Indian attack, Reti-Smyslov variation10.0%0.0%
D43QGD semi-Slav, Hastings variation30.0%0.0%
B85Sicilian, Scheveningen, classical variation with ...Qc7 and ...Nc610.0%0.0%
B83Sicilian, modern Scheveningen, main line with Nb310.0%0.0%
D08QGD, Albin counter-gambit, Balogh variation10.0%0.0%
A44Old Benoni defence10.0%0.0%
C45Scotch, Paulsen attack10.0%0.0%
C46Three knights, Steinitz, Rosenthal variation10.0%0.0%
C89Ruy Lopez, Marshall, Herman Steiner variation10.0%0.0%
E92King's Indian, classical variation10.0%0.0%
D23Queen's gambit accepted20.0%0.0%
C31KGD, Falkbeer, Morphy gambit10.0%0.0%
C25Vienna, Steinitz gambit, Fraser-Minckwitz variation30.0%0.0%
B96Sicilian, Najdorf, Polugayevsky variation20.0%0.0%
A81Dutch defence, Blackburne variation10.0%0.0%
C14French, classical, Stahlberg variation10.0%0.0%
C21Danish gambit, Collijn defence20.0%0.0%
C45Scotch, Tartakower variation10.0%0.0%
C41Philidor, Hanham, Kmoch variation10.0%0.0%
D72Neo-Gruenfeld, 5.cd, main line30.0%0.0%

Created in 2005-2012 by Kirill Kryukov
Updated on June 16, 2013