CCRL 40/40
Downloads and Statistics
August 22, 2008
Testing summary:
Total: 134'776 games
played by 505 programs
19679 CPU days (X2 4600+)

White wins: 48'494 (36.0%)
Black wins: 36'437 (27.0%)
Draws: 49'845 (37.0%)
White score: 54.5%

Opening statistics

This page shows how many games in our database were played from various openings classified by the Encyclopedia of Chess Openings. The table also shows average draw percentage and white score we observed in our games.

ECONumber
of
games
DrawsWhite
score
Commented
PGN
A00Irregular Openings41337.5%49.8%
A01Nimzovich-Larsen attack20128.9%51.7%
A02Bird's Opening633.3%66.7%
A03Bird's Opening425.0%37.5%
A04Reti Opening134436.5%54.4%
A05Reti Opening, 2..Nf680040.4%53.9%
A06Reti Opening, 2..d545836.5%49.0%
A07Reti Opening, King's Indian attack (Barcza system)115640.5%51.6%
A08Reti Opening, King's Indian attack7833.3%51.3%
A09Reti Opening, 2..d5 3.c414544.1%50.3%
A10English Opening40742.5%53.4%
A11English, Caro-Kann defensive system7643.4%54.6%
A12English, Caro-Kann defensive system6142.6%47.5%
A13English Opening64137.9%53.0%
A14English, Neo-Catalan declined15150.3%53.6%
A15English, 1...Nf6 (Anglo-Indian defense)96438.4%53.9%
A16English Opening17032.4%53.2%
A17English Opening16136.6%58.7%
A18English, Mikenas-Carls variation911.1%61.1%
A19English, Mikenas-Carls, Sicilian variation2050.0%50.0%
A20English Opening97539.0%55.2%
A21English Opening34231.6%55.6%
A22English Opening50935.4%51.1%
A23English Opening, Bremen system, Keres variation3122.6%59.7%
A24English Opening, Bremen system with 3...g61163.6%59.1%
A25English Opening, Sicilian Reversed34635.8%54.0%
A26English Opening, Closed system7726.0%50.6%
A27English Opening, Three knights system4228.6%54.8%
A28English Opening, Four knights system58339.5%53.7%
A29English Opening, Four knights, kingside Fianchetto145938.2%51.9%
A30English Opening, Symmetrical variation138237.8%56.1%
A31English Opening, Symmetrical, Benoni formation13743.8%59.1%
A32English Opening, Symmetrical2138.1%61.9%
A33English Opening, Symmetrical31638.6%57.6%
A34English Opening, Symmetrical35836.6%56.6%
A35English Opening, Symmetrical32839.3%52.3%
A36English Opening, Symmetrical13028.5%51.9%
A37English Opening, Symmetrical13728.5%52.2%
A38English Opening, Symmetrical12940.3%51.2%
A39English Opening, Symmetrical, Main line with d414544.8%58.3%
A40Queen's pawn101837.1%57.7%
A41Queen's pawn17232.6%56.4%
A42Modern defense, Averbakh system3946.2%64.1%
A43Old Benoni defense11326.5%55.8%
A44Old Benoni defence683.3%58.3%
A45Queen's pawn game69136.3%53.0%
A46Queen's pawn game50433.1%54.9%
A47Queen's Indian defense12133.1%57.0%
A48King's Indian, East Indian defense39736.0%52.3%
A49King's Indian, Fianchetto without c415635.9%57.7%
A50Queen's pawn game17234.3%56.7%
A51Budapest defense declined90.0%66.7%
A52Budapest defense14444.4%62.5%
A53Old Indian defense15630.8%59.6%
A54Old Indian, Ukrainian variation2254.5%63.6%
A55Old Indian, Main line6647.0%61.4%
A56Benoni defense14228.2%62.0%
A57Benko gambit18325.7%53.3%
A58Benko gambit accepted12039.2%54.6%
A59Benko gambit, 7.e42924.1%60.3%
A60Benoni defense1330.8%69.2%
A61Benoni defense14423.6%65.3%
A62Benoni, Fianchetto variation5829.3%61.2%
A63Benoni, Fianchetto variation, 9...Nbd7812.5%68.8%
A64Benoni, Fianchetto variation, 11...Re82119.0%33.3%
A65Benoni, 6.e420.0%0.0%
A67Benoni, Taimanov variation40.0%100.0%
A69Benoni, Four pawns attack, Main line1353.8%57.7%
A70Benoni, Classical with e4 and Nf310933.9%54.6%
A71Benoni, Classical, 8.Bg51811.1%50.0%
A72Benoni, Classical without 9.O-O812.5%81.3%
A73Benoni, Classical, 9.O-O80.0%75.0%
A74Benoni, Classical, 9...a6, 10.a410.0%100.0%
A75Benoni, Classical with ...a6 and 10...Bg4922.2%55.6%
A76Benoni, Classical, 9...Re81020.0%30.0%
A77Benoni, Classical, 9...Re8, 10.Nd22020.0%70.0%
A78Benoni, Classical with ...Re8 and ...Na61136.4%54.5%
A79Benoni, Classical, 11.f31637.5%50.0%
A80Dutch7133.8%62.0%
A81Dutch defense19538.5%54.6%
A82Dutch, Staunton gambit250.0%75.0%
A83Dutch, Staunton gambit, Staunton's line1100.0%50.0%
A84Dutch defense9639.6%55.2%
A85Dutch with 2.c4 & 3.Nc31020.0%60.0%
A86Dutch with 2.c4 & 3.g31457.1%50.0%
A87Dutch, Leningrad, Main variation1758.8%64.7%
A88Dutch, Leningrad, Main variation with 7...c63826.3%71.1%
A89Dutch, Leningrad, Main variation with Nc62532.0%72.0%
A90Dutch defense5529.1%60.0%
A91Dutch defense425.0%87.5%
A92Dutch defense450.0%50.0%
A93Dutch, Stonewall, Botwinnik variation825.0%50.0%
A94Dutch, Stonewall with Ba33100.0%50.0%
A95Dutch, Stonewall with Nc3616.7%41.7%
A96Dutch, Classical variation1241.7%62.5%
A97Dutch, Ilyin-Genevsky variation757.1%57.1%
A98Dutch, Ilyin-Genevsky variation with Qc21100.0%50.0%
A99Dutch, Ilyin-Genevsky variation with b3650.0%75.0%
B00King's pawn Opening19129.8%60.5%
B01Scandinavian (centercounter) center defense30641.5%59.0%
B02Alekhine's defense5127.5%47.1%
B03Alekhine's defense8334.9%59.6%
B04Alekhine's defense, Modern variation9140.7%65.4%
B05Alekhine's defense, Modern variation, 4...Bg47330.1%64.4%
B06Robatsch (Modern) defense35330.6%58.9%
B07Pirc defense29636.8%56.3%
B08Pirc, Classical (Two knights) system25334.8%56.9%
B09Pirc, Austrian attack12639.7%55.6%
B10Caro-Kann defense72436.3%56.4%
B11Caro-Kann, Two knights, 3...Bg44630.4%56.5%
B12Caro-Kann defense114434.4%56.3%
B13Caro-Kann, Exchange variation22045.5%49.5%
B14Caro-Kann, Panov-Botvinnik attack, 5...e643644.0%55.5%
B15Caro-Kann defense17432.8%54.3%
B16Caro-Kann, Bronstein-Larsen variation2927.6%62.1%
B17Caro-Kann, Steinitz variation48736.1%54.8%
B18Caro-Kann, Classical variation15439.0%52.6%
B19Caro-Kann, Classical, 7...Nd778140.3%53.8%
B20Sicilian defense49438.3%49.7%
B21Sicilian, Grand Prix attack19637.8%51.5%
B22Sicilian, Alapin's variation (2.c3)86837.7%53.9%
B23Sicilian, Closed70534.9%53.3%
B24Sicilian, Closed4833.3%47.9%
B25Sicilian, Closed8037.5%53.8%
B26Sicilian, Closed, 6.Be35230.8%44.2%
B27Sicilian defense19034.7%57.9%
B28Sicilian, O'Kelly variation1154.5%63.6%
B29Sicilian, Nimzovich-Rubinstein variation2326.1%56.5%
B30Sicilian defense82737.5%54.2%
B31Sicilian, Nimzovich-Rossolimo attack (with ...g6, without ...d6)37636.2%56.1%
B32Sicilian defense48535.1%60.2%
B33Sicilian defense134132.2%57.2%
B34Sicilian, Accelerated Fianchetto, Exchange variation4438.6%51.1%
B35Sicilian, Accelerated Fianchetto, Modern variation with Bc414141.1%51.1%
B36Sicilian, Accelerated Fianchetto, Maroczy bind11040.0%60.9%
B37Sicilian, Accelerated Fianchetto, Maroczy bind, 5...Bg71163.6%50.0%
B38Sicilian, Accelerated Fianchetto, Maroczy bind, 6.Be39834.7%59.2%
B39Sicilian, Accelerated Fianchetto, Breyer variation3040.0%50.0%
B40Sicilian defense92233.8%55.3%
B41Sicilian, Kan variation7429.7%52.7%
B42Sicilian, Kan, 5.Bd362935.3%56.9%
B43Sicilian, Kan, 5.Nc335536.6%55.5%
B44Sicilian defense30839.3%50.5%
B45Sicilian, Taimanov variation57836.2%57.2%
B46Sicilian, Taimanov variation87437.8%54.8%
B47Sicilian, Taimanov (Bastrikov) variation128437.5%55.0%
B48Sicilian, Taimanov variation75836.8%52.4%
B49Sicilian, Taimanov variation19837.9%56.8%
B50Sicilian38033.4%55.9%
B51Sicilian, Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack17641.5%53.7%
B52Sicilian, Canal-Sokolsky attack, 3...Bd720745.9%55.3%
B53Sicilian, Chekhover variation9033.3%52.2%
B54Sicilian27135.1%55.2%
B55Sicilian, Prins variation, Venice attack560.0%70.0%
B56Sicilian33034.5%54.2%
B57Sicilian, Sozin (not Scheveningen)32341.5%50.5%
B58Sicilian, Classical15539.4%48.7%
B59Sicilian, Boleslavsky variation, 7.Nb31225.0%54.2%
B60Sicilian, Richter-Rauzer7729.9%63.0%
B61Sicilian, Richter-Rauzer, Larsen variation, 7.Qd26341.3%54.0%
B62Sicilian, Richter-Rauzer, 6...e65630.4%49.1%
B63Sicilian, Richter-Rauzer, Rauzer attack29332.8%55.6%
B64Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defense, 9.f410643.4%50.0%
B65Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defense, 9...Nxd419440.2%56.7%
B66Sicilian, Richter-Rauzer, Rauzer attack, 7...a6304131.6%51.5%
B67Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defense, 8...Bd795830.3%54.5%
B68Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defense, 9...Be73429.4%67.6%
B69Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defense, 11.Bxf66530.8%63.1%
B70Sicilian, Dragon variation8933.7%50.6%
B71Sicilian, Dragon, Levenfish variation728.6%57.1%
B72Sicilian, Dragon, 6.Be32352.2%47.8%
B73Sicilian, Dragon, Classical, 8.O-O6038.3%54.2%
B74Sicilian, Dragon, Classical, 9.Nb33638.9%52.8%
B75Sicilian, Dragon, Yugoslav attack3033.3%66.7%
B76Sicilian, Dragon, Yugoslav attack, 7...O-O17626.7%63.9%
B77Sicilian, Dragon, Yugoslav attack, 9.Bc44546.7%47.8%
B78Sicilian, Dragon, Yugoslav attack, 10.O-O-O5719.3%44.7%
B79Sicilian, Dragon, Yugoslav attack, 12.h4616.7%58.3%
B80Sicilian, Scheveningen variation44729.8%52.0%
B81Sicilian, Scheveningen, Keres attack53031.5%61.6%
B82Sicilian, Scheveningen, 6.f410532.4%59.0%
B83Sicilian, Scheveningen, 6.Be241539.0%52.0%
B84Sicilian, Scheveningen (Paulsen), Classical variation134136.3%49.8%
B85Sicilian, Scheveningen, Classical variation with ...Qc7 and ...Nc619441.8%54.4%
B86Sicilian, Sozin attack1442.9%42.9%
B87Sozin with ...a6 and ...b519437.6%51.8%
B88Sicilian, Sozin, Leonhardt variation7037.1%55.7%
B89Sicilian, Sozin, 7.Be345330.7%49.3%
B90Sicilian, Najdorf550230.1%52.8%
B91Sicilian, Najdorf, Zagreb (Fianchetto) variation6434.4%53.1%
B92Sicilian, Najdorf, Zagreb (Fianchetto) variation90238.1%50.7%
B93Sicilian, Najdorf, 6.f430543.6%51.6%
B94Sicilian, Najdorf, 6.Bg53020.0%60.0%
B95Sicilian, Najdorf, 6...e65529.1%32.7%
B96Sicilian, Najdorf, 7.f410431.7%47.6%
B97Sicilian, Najdorf, 7...Qb668137.4%47.2%
B98Sicilian, Najdorf, 7...Be78426.2%61.9%
B99Sicilian, Najdorf, 7...Be7 Main line17220.9%52.3%
C00French defense83337.8%50.1%
C01French, Exchange variation25538.8%53.1%
C02French, Advance variation61331.6%53.8%
C03French, Tarrasch25640.2%57.6%
C04French, Tarrasch, Guimard Main line2825.0%55.4%
C05French, Tarrasch, Closed variation14834.5%55.7%
C06French, Tarrasch, Closed variation, Main line37237.1%61.3%
C07French, Tarrasch, Open variation54747.9%50.6%
C08French, Tarrasch, Open, 4.exd5 exd524251.2%53.7%
C09French, Tarrasch, Open variation, Main line27151.7%57.2%
C10French, Paulsen variation46037.0%55.2%
C11French defense148835.6%55.5%
C12French, MacCutcheon variation24029.2%52.9%
C13French, Classical3625.0%59.7%
C14French, Classical variation9032.2%58.3%
C15French, Winawer (Nimzovich) variation10841.7%55.1%
C16French, Winawer, Advance variation14331.5%64.7%
C17French, Winawer, Advance variation20631.1%56.8%
C18French, Winawer, Advance variation7825.6%56.4%
C19French, Winawer, Advance, 6...Ne7129230.0%59.0%
C20King's pawn game1225.0%54.2%
C21center game5345.3%69.8%
C22center game6725.4%66.4%
C23Bishop's Opening12241.0%57.4%
C24Bishop's Opening, Berlin defense10136.6%53.0%
C25Vienna game8534.1%54.7%
C26Vienna, Falkbeer variation8537.6%49.4%
C27Vienna game1145.5%40.9%
C28Vienna game3735.1%44.6%
C29Vienna gambit, Kaufmann variation2642.3%63.5%
C30King's gambit2334.8%65.2%
C31KGD, Falkbeer counter-gambit3100.0%50.0%
C33King's gambit accepted1323.1%34.6%
C34King's knight's gambit1526.7%60.0%
C35KGA, Cunningham defense714.3%50.0%
C36KGA, Abbazia defense (Classical defense, Modern defense)933.3%61.1%
C37KGA, Quaade gambit366.7%33.3%
C38King's knight's gambit50.0%0.0%
C39King's knight's gambit2030.0%40.0%
C40King's knight Opening3531.4%67.1%
C41Philidor's defense19536.4%55.6%
C42Petrov's defense138738.1%57.9%
C43Petrov, Modern (Steinitz) attack39737.5%51.0%
C44King's pawn game13138.9%52.3%
C45Scotch game103639.7%52.8%
C46Three knights game16341.1%52.5%
C47Four knights, Scotch variation7945.6%51.9%
C48Four knights, Spanish variation30340.6%55.9%
C49Four knights, double Ruy Lopez19235.4%57.3%
C50King's pawn game44437.4%51.6%
C51Evans gambit declined4129.3%43.9%
C52Evans gambit3435.3%44.1%
C53Giuoco piano53736.3%56.5%
C54Guioco piano3748.6%45.9%
C55Two knights defense19940.2%52.8%
C56Two knights defense1060.0%50.0%
C57Two knights defense1030.0%55.0%
C58Two knights defense1241.7%62.5%
C59Two knights defense30932.0%52.3%
C60Ruy Lopez2828.6%67.9%
C61Ruy Lopez, Bird's defense60.0%66.7%
C62Ruy Lopez, Old Steinitz defence10033.0%57.5%
C63Ruy Lopez, Schilemann defense2725.9%61.1%
C64Ruy Lopez, Classical (Cordel) defence20431.4%56.9%
C65Ruy Lopez, Berlin defense22432.6%50.7%
C66Ruy Lopez, Berlin defence, 4.O-O, d617450.0%57.2%
C67Ruy Lopez, Berlin defence, Open variation63540.6%53.4%
C68Ruy Lopez, Exchange variation3551.4%51.4%
C69Ruy Lopez, Exchange variation, 5.O-O24431.1%54.1%
C70Ruy Lopez,16237.0%62.3%
C71Ruy Lopez, Modern Steinitz defense5135.3%54.9%
C72Ruy Lopez, Modern Steinitz defense 5.0-05040.0%58.0%
C73Ruy Lopez, Modern Steinitz defense, Richter variation3330.3%54.5%
C74Ruy Lopez, Modern Steinitz defense2425.0%62.5%
C75Ruy Lopez, Modern Steinitz defense2634.6%59.6%
C76Ruy Lopez, Modern Steinitz defense, Fianchetto (Bronstein) variation5930.5%52.5%
C77Ruy Lopez, Morphy defence22137.1%55.2%
C78Ruy Lopez, 5.O-O42738.2%56.6%
C79Ruy Lopez, Steinitz defense deferred (Russian defence)8332.5%57.2%
C80Ruy Lopez, Open (Tarrasch) defence29333.8%56.5%
C81Ruy Lopez, Open, Howell attack944.4%44.4%
C82Ruy Lopez, Open, 9.c33330.3%48.5%
C83Ruy Lopez, Open, Classical defence3647.2%54.2%
C84Ruy Lopez, Closed defense39538.7%54.3%
C85Ruy Lopez, Exchange variation doubly deferred (DERLD)33037.0%49.7%
C86Worrall attack5446.3%49.1%
C87Ruy Lopez, Closed, Averbach variation6738.8%61.2%
C88Ruy Lopez, Closed123137.1%53.4%
C89Ruy Lopez, Marshall counter-attack15034.7%54.0%
C90Ruy Lopez, closed (with ...d6)64233.8%47.7%
C91Ruy Lopez, closed, 9.d4156436.1%55.3%
C92Ruy Lopez, closed, 9.d4117637.7%55.0%
C93Ruy Lopez, closed, Smyslov defense2634.6%55.8%
C94Ruy Lopez, Closed, Breyer defense837.5%68.8%
C95Ruy Lopez, closed, Breyer, 10.d442436.3%58.3%
C96Ruy Lopez, closed, 8...Na527935.1%57.3%
C97Ruy Lopez, Closed, Chigorin defense36329.8%63.9%
C98Ruy Lopez, Closed, Chigorin, 12...Nc68135.8%57.4%
C99Ruy Lopez, Closed, Chigorin, 12...c5d465040.9%61.7%
D00Queen's pawn game45038.7%49.6%
D01Richter-Veresov attack5623.2%42.0%
D02Queen's pawn game, 2. Nf3155935.0%52.4%
D03Torre attack, Tartakower variation7037.1%50.0%
D04Queen's pawn game11835.6%45.8%
D05Queen's pawn game, Zukertort variation12039.2%53.8%
D06Queen's Gambit5044.0%60.0%
D07QGD; Chigorin defense32035.0%60.0%
D08QGD; Albin counter-gambit333.3%50.0%
D09QGD; Albin counter-gambit, 5.g3425.0%37.5%
D10QGD; Slav defense65836.8%54.7%
D11QGD; Slav defense, 3.Nf339036.7%54.5%
D12QGD; Slav defense, 4.e3 Bf541438.6%52.9%
D13QGD; Slav defense, Exchange variation8434.5%61.3%
D14QGD; Slav defense, Exchange variation5944.1%50.8%
D15QGD; Slav accepted, Exchange variation, 6.Bf4 Bf534234.2%53.1%
D16QGD; Slav accepted, Alapin variation4422.7%72.7%
D17QGD; Slav defense, Czech defence30435.2%57.7%
D18QGD; Dutch variation2524.0%56.0%
D19QGD; Dutch variation38435.2%58.5%
D20Queen's Gambit accepted44036.1%59.7%
D21QGA, 3.Nf35831.0%53.4%
D22QGA; Alekhine defense1957.9%55.3%
D23Queen's gambit accepted1145.5%50.0%
D24QGA, 4.Nc32240.9%56.8%
D25QGA, 4.e37940.5%60.8%
D26QGA; classical variation31255.1%52.2%
D27QGA; classical variation103545.0%55.7%
D28QGA; Classical variation 7.Qe23542.9%61.4%
D29QGA; Classical variation 8...Bb78438.1%44.0%
D30QGD113340.4%55.4%
D31QGD, 3.Nc326337.3%53.6%
D32QGD; Tarrasch defense4647.8%58.7%
D33QGD; Tarrasch, Schlechter-Rubinstein system2240.9%47.7%
D34QGD; Tarrasch, 7...Be719741.1%55.6%
D35QGD; 3...Nf620741.5%57.0%
D36QGD; Exchange, positional line, 6.Qc21241.7%37.5%
D37QGD; 4.Nf3124041.5%55.9%
D38QGD; Ragozin variation39442.4%52.9%
D39QGD; Ragozin, Vienna variation56748.0%53.1%
D40QGD; Semi-Tarrasch defense12740.2%50.8%
D41QGD; Semi-Tarrasch, 5.cd10743.0%56.1%
D42QGD; Semi-Tarrasch, 7.Bd34546.7%58.9%
D43QGD; Semi-Slav121437.1%53.9%
D44QGD; Semi-Slav 5.Bg5 dc38535.1%53.4%
D45QGD; Semi-Slav 5.e3417839.6%52.1%
D46QGD; Semi-Slav 6.Bd325437.8%57.9%
D47QGD; Semi-Slav 7.Bc4360735.8%54.7%
D48QGD; Meran, 8...a665236.7%52.5%
D49QGD; Meran, 11. Nxb527740.1%46.8%
D50QGD; 4.Bg51936.8%55.3%
D51QGD; 4.Bg5 Nbd7944.4%55.6%
D52QGD18045.6%56.1%
D53QGD; 4.Bg5 Be71346.2%38.5%
D54QGD; Anti-neo-Orthodox variation10.0%100.0%
D55QGD; 6.Nf316546.1%57.0%
D56QGD; Lasker defense5532.7%49.1%
D57QGD; Lasker defense, Main line2100.0%50.0%
D58QGD; Tartakower (Makagonov-Bondarevsky) system231845.6%52.7%
D59QGD; Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd56734.3%45.5%
D60QGD; Orthodox defense2040.0%65.0%
D61QGD; Orthodox defense, Rubinstein variation3548.6%55.7%
D62QGD; Orthodox defense, 7.Qc2 c5, 8.cd (Rubinstein)3151.6%67.7%
D63QGD; Orthodox defense, 7.Rc19537.9%55.8%
D64QGD; Orthodox defense, Rubinstein attack (with Rc1)3342.4%48.5%
D65QGD; Orthodox defense, Rubinstein attack, Main line10.0%100.0%
D66QGD; Orthodox defense, Bd3 line5040.0%62.0%
D67QGD; Orthodox defense, Bd3 line, Capablanca freeing manoever6038.3%55.8%
D68QGD; Orthodox defense, Classical variation7445.9%56.8%
D69QGD; Orthodox defense, Classical, 13.dxe51566.7%40.0%
D70Neo-Gruenfeld defense2536.0%46.0%
D71Neo-Gruenfeld, 5.cd1650.0%56.3%
D72Neo-Gruenfeld, 5.cd, Main line1838.9%41.7%
D73Neo-Gruenfeld, 5.Nf37057.1%55.7%
D74Neo-Gruenfeld, 6.cd Nxd5, 7.O-O1844.4%61.1%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc31735.3%52.9%
D76Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb65646.4%55.4%
D77Neo-Gruenfeld, 6.O-O9447.9%51.6%
D78Neo-Gruenfeld, 6.O-O c68742.5%51.1%
D79Neo-Gruenfeld, 6.O-O, Main line4344.2%50.0%
D80Gruenfeld defense6933.3%60.1%
D81Gruenfeld; Russian variation666.7%66.7%
D82Gruenfeld 4.Bf44344.2%54.7%
D83Gruenfeld gambit1225.0%70.8%
D84Gruenfeld gambit accepted250.0%25.0%
D85Gruenfeld, exchange variation98547.1%54.0%
D86Gruenfeld, Exchange, Classical variation11542.6%52.6%
D87Gruenfeld, Exchange, Spassky variation11543.5%59.1%
D88Gruenfeld, Spassky variation, Main line, 10...cd, 11.cd2250.0%52.3%
D89Gruenfeld, Spassky variation, Main line, 13.Bd32147.6%47.6%
D90Gruenfeld, Three knights variation5330.2%49.1%
D91Gruenfeld, Three knights variation23129.9%47.8%
D92Gruenfeld, 5.Bf410250.0%59.3%
D93Gruenfeld with 5. Bf4 O-O 6. e35450.0%60.2%
D94Gruenfeld, 5.e311855.1%53.8%
D95Gruenfeld with 5. e3 O-O 6. Qb3837.5%56.3%
D96Gruenfeld, Russian variation1850.0%63.9%
D97Gruenfeld, Russian variation with 7. e459841.5%50.7%
D98Gruenfeld, Russian, Smyslov variation4542.2%67.8%
D99Gruenfeld defense, Smyslov, Main line4953.1%55.1%
E00Queen's pawn game64037.2%54.2%
E01Catalan, closed3231.3%59.4%
E02Catalan, open, 5.Qa41330.8%76.9%
E03Catalan, open, Alekhine variation1100.0%50.0%
E04Catalan, Open, 5.Nf367139.9%51.6%
E05Catalan, Open, Classical line2227.3%50.0%
E06Catalan, Closed, 5.Nf346745.8%53.5%
E07Catalan, Closed, 6...Nbd72025.0%37.5%
E08Catalan, Closed, 7.Qc23429.4%52.9%
E09Catalan, Closed, Main line2313.0%71.7%
E10Queen's pawn game 3. Nf377340.1%57.7%
E11Bogo-Indian defense55232.8%55.3%
E12Queen's Indian defense223337.1%52.4%
E13Queen's Indian, 4.Nc3, Main line2045.0%57.5%
E14Queen's Indian, 4.e335136.2%54.6%
E15Queen's Indian, 4.g3544635.9%56.1%
E16Queen's Indian, Capablanca variation8731.0%53.4%
E17Queen's Indian, 5.Bg2 Be716641.6%55.7%
E18Queen's Indian, Old Main line, 7.Nc320942.1%59.8%
E19Queen's Indian, Old Main line, 9.Qxc321337.6%58.7%
E20Nimzo-Indian defense15735.0%55.7%
E21Nimzo-Indian, Three knights variation31637.0%49.5%
E22Nimzo-Indian, Spielmann variation1154.5%54.5%
E23Nimzo-Indian, Spielmann, 4...c5, 5.dc Nc6650.0%41.7%
E24Nimzo-Indian, Saemisch variation1747.1%29.4%
E25Nimzo-Indian, Saemisch variation, Keres variation5655.4%47.3%
E26Nimzo-Indian, Saemisch variation, 4. a3 Bxc3+ 5. bxc3 c5 6. e3922.2%33.3%
E27Nimzo-Indian, Saemisch variation, 5...0-0250.0%25.0%
E28Nimzo-Indian, Saemisch variation, 6. e330.0%100.0%
E29Nimzo-Indian, Saemisch variation, Main line2030.0%35.0%
E30Nimzo-Indian, Leningrad variation,11227.7%53.1%
E31Nimzo-Indian, Leningrad variation, main line1822.2%44.4%
E32Nimzo-Indian, Classical variation151440.9%53.7%
E33Nimzo-Indian, Classical variation, 4...Nc66435.9%55.5%
E34Nimzo-Indian, Classical, Noa variation13652.2%51.8%
E35Nimzo-Indian, Classical, Noa variation, 5. cxd5 exd56746.3%59.0%
E36Nimzo-Indian, Classical, Noa variation, 5. a32119.0%47.6%
E37Nimzo-Indian, Classical, Noa variation, Main line, 7.Qc21637.5%75.0%
E38Nimzo-Indian, Classical, 4...c56437.5%68.8%
E39Nimzo-Indian, Classical, Pirc variation13940.3%56.8%
E40Nimzo-Indian, 4.e34623.9%48.9%