CCRL 40/40
Downloads and Statistics
April 11, 2008
Testing summary:
Total: 114'872 games
played by 449 programs
16375 CPU days (X2 4600+)

White wins: 41'478 (36.1%)
Black wins: 31'357 (27.3%)
Draws: 42'037 (36.6%)
White score: 54.4%

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
A74Benoni, Classical, 9...a6, 10.a410.0%100.0%0.00 MB
A67Benoni, Taimanov variation40.0%100.0%0.00 MB
E28Nimzo-Indian, Saemisch variation, 6. e330.0%100.0%0.00 MB
E75King's Indian, Averbakh, Main line333.3%83.3%0.00 MB
C81Ruy Lopez, Open, Howell attack333.3%83.3%0.00 MB
A91Dutch defense333.3%83.3%0.00 MB
A72Benoni, Classical without 9.O-O812.5%81.3%0.01 MB
E37Nimzo-Indian, Classical, Noa variation, Main line, 7.Qc21533.3%76.7%0.01 MB
E64King's Indian, Fianchetto, Yugoslav system1030.0%75.0%0.01 MB
E99King's Indian, Orthodox, Aronin-Taimanov, Main line616.7%75.0%0.00 MB
A18English, Mikenas-Carls variation616.7%75.0%0.01 MB
A82Dutch, Staunton gambit250.0%75.0%0.00 MB
E70King's Indian, 4.e48523.5%74.1%0.06 MB
D16QGD; Slav accepted, Alapin variation3923.1%73.1%0.03 MB
A88Dutch, Leningrad, Main variation with 7...c63426.5%72.1%0.03 MB
E09Catalan, Closed, Main line2313.0%71.7%0.02 MB
A73Benoni, Classical, 9.O-O70.0%71.4%0.01 MB
E93King's Indian, Petrosian system, Main line728.6%71.4%0.01 MB
C21center game4746.8%70.2%0.04 MB
A99Dutch, Ilyin-Genevsky variation with b3560.0%70.0%0.01 MB
B55Sicilian, Prins variation, Venice attack560.0%70.0%0.01 MB
D96Gruenfeld, Russian variation1546.7%70.0%0.01 MB
A63Benoni, Fianchetto variation, 9...Nbd7520.0%70.0%0.01 MB
E02Catalan, open, 5.Qa41040.0%70.0%0.01 MB
D98Gruenfeld, Russian, Smyslov variation4035.0%70.0%0.03 MB
C40King's knight Opening3135.5%69.4%0.02 MB
A60Benoni defense1330.8%69.2%0.01 MB
E38Nimzo-Indian, Classical, 4...c55230.8%69.2%0.04 MB
D62QGD; Orthodox defense, 7.Qc2 c5, 8.cd (Rubinstein)2152.4%69.0%0.02 MB
C57Two knights defense837.5%68.8%0.01 MB
B05Alekhine's defense, Modern variation, 4...Bg46230.6%68.5%0.05 MB
A77Benoni, Classical, 9...Re8, 10.Nd21921.1%68.4%0.01 MB
E49Nimzo-Indian, 4.e3, Botvinnik system2850.0%67.9%0.02 MB
C60Ruy Lopez2828.6%67.9%0.02 MB
C22center game6222.6%67.7%0.04 MB
C74Ruy Lopez, Modern Steinitz defense2128.6%66.7%0.02 MB
B68Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defense, 9...Be72729.6%66.7%0.02 MB
A02Bird's Opening633.3%66.7%0.01 MB
D81Gruenfeld; Russian variation666.7%66.7%0.01 MB
C61Ruy Lopez, Bird's defense60.0%66.7%0.00 MB
A89Dutch, Leningrad, Main variation with Nc62433.3%66.7%0.02 MB
A61Benoni defense12622.2%66.7%0.08 MB
B16Caro-Kann, Bronstein-Larsen variation2222.7%65.9%0.02 MB
C34King's knight's gambit1323.1%65.4%0.01 MB
C16French, Winawer, Advance variation12729.9%65.4%0.08 MB
A42Modern defense, Averbakh system3345.5%65.2%0.03 MB
C29Vienna gambit, Kaufmann variation2040.0%65.0%0.01 MB
D83Gruenfeld gambit1030.0%65.0%0.01 MB
C30King's gambit2040.0%65.0%0.02 MB
A96Dutch, Classical variation1030.0%65.0%0.01 MB
B69Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defense, 11.Bxf64829.2%64.6%0.03 MB
B60Sicilian, Richter-Rauzer6930.4%64.5%0.04 MB
A54Old Indian, Ukrainian variation2152.4%64.3%0.02 MB
E53Nimzo-Indian, 4.e3, Main line with ...c57042.9%64.3%0.05 MB
D60QGD; Orthodox defense1838.9%63.9%0.02 MB
E71King's Indian, Makagonov system (5.h3)4725.5%63.8%0.04 MB
C97Ruy Lopez, Closed, Chigorin defense27629.0%63.8%0.18 MB
C58Two knights defense1136.4%63.6%0.01 MB
B28Sicilian, O'Kelly variation1154.5%63.6%0.01 MB
B04Alekhine's defense, Modern variation8241.5%63.4%0.06 MB
E77King's Indian, Four pawns attack, 6.Be23020.0%63.3%0.02 MB
E95King's Indian, Orthodox, 7...Nbd7, 8.Re14634.8%63.0%0.03 MB
E52Nimzo-Indian, 4.e3, Main line with ...b64736.2%62.8%0.04 MB
D87Gruenfeld, Exchange, Spassky variation7939.2%62.7%0.05 MB
A24English Opening, Bremen system with 3...g6850.0%62.5%0.01 MB
E74King's Indian, Averbakh, 6...c5825.0%62.5%0.01 MB
A87Dutch, Leningrad, Main variation1662.5%62.5%0.02 MB
E13Queen's Indian, 4.Nc3, Main line1637.5%62.5%0.01 MB
A32English Opening, Symmetrical2035.0%62.5%0.02 MB
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc31225.0%62.5%0.01 MB
A97Dutch, Ilyin-Genevsky variation850.0%62.5%0.01 MB
E72King's Indian with e4 & g3850.0%62.5%0.01 MB
B76Sicilian, Dragon, Yugoslav attack, 7...O-O15725.5%62.4%0.10 MB
C99Ruy Lopez, Closed, Chigorin, 12...c5d448443.4%62.4%0.31 MB
C70Ruy Lopez,16237.0%62.3%0.12 MB
A80Dutch6931.9%62.3%0.05 MB
A56Benoni defense11028.2%62.3%0.08 MB
A62Benoni, Fianchetto variation5330.2%62.3%0.04 MB
D66QGD; Orthodox defense, Bd3 line4141.5%62.2%0.03 MB
B98Sicilian, Najdorf, 7...Be77429.7%62.2%0.05 MB
A23English Opening, Bremen system, Keres variation2920.7%62.1%0.02 MB
D28QGA; Classical variation 7.Qe23441.2%61.8%0.02 MB
D74Neo-Gruenfeld, 6.cd Nxd5, 7.O-O1346.2%61.5%0.01 MB
E90King's Indian, 5.Nf311730.8%61.5%0.09 MB
B81Sicilian, Scheveningen, Keres attack44432.0%61.5%0.26 MB
C06French, Tarrasch, Closed variation, Main line31438.2%61.5%0.20 MB
E87King's Indian, Saemisch, Orthodox, 7.d54032.5%61.3%0.03 MB
B75Sicilian, Dragon, Yugoslav attack2733.3%61.1%0.02 MB
A55Old Indian, Main line6446.9%60.9%0.05 MB
C63Ruy Lopez, Schilemann defense2326.1%60.9%0.02 MB
B03Alekhine's defense8334.9%60.8%0.06 MB
D25QGA, 4.e36541.5%60.8%0.05 MB
E98King's Indian, Orthodox, Aronin-Taimanov, 9.Ne138022.4%60.7%0.24 MB
B00King's pawn Opening17929.6%60.6%0.13 MB
E94King's Indian, Orthodox variation34134.0%60.1%0.23 MB
E68King's Indian, Fianchetto, Classical variation, 8.e422334.1%60.1%0.15 MB
A53Old Indian defense14931.5%60.1%0.11 MB
E69King's Indian, Fianchetto, Classical Main line16934.9%60.1%0.11 MB
A92Dutch defense540.0%60.0%0.01 MB
C13French, Classical3020.0%60.0%0.02 MB
E45Nimzo-Indian, 4.e3, Bronstein (Byrne) variation3053.3%60.0%0.02 MB
D06Queen's Gambit5044.0%60.0%0.04 MB
A85Dutch with 2.c4 & 3.Nc31020.0%60.0%0.01 MB
E83King's Indian, Saemisch, 6...Nc61060.0%60.0%0.01 MB
D07QGD; Chigorin defense30735.2%59.9%0.19 MB
D80Gruenfeld defense6134.4%59.8%0.05 MB
E35Nimzo-Indian, Classical, Noa variation, 5. cxd5 exd56241.9%59.7%0.05 MB
B38Sicilian, Accelerated Fianchetto, Maroczy bind, 6.Be38835.2%59.7%0.06 MB
D13QGD; Slav defense, Exchange variation7435.1%59.5%0.05 MB
B32Sicilian defense20731.9%59.4%0.16 MB
E18Queen's Indian, Old Main line, 7.Nc314943.6%59.4%0.10 MB
E76King's Indian, Four pawns attack3237.5%59.4%0.02 MB
A59Benko gambit, 7.e41631.3%59.4%0.01 MB
D88Gruenfeld, Spassky variation, Main line, 10...cd, 11.cd1656.3%59.4%0.01 MB
C72Ruy Lopez, Modern Steinitz defense 5.0-04334.9%59.3%0.03 MB
B01Scandinavian (centercounter) center defense27040.7%59.3%0.18 MB
E19Queen's Indian, Old Main line, 9.Qxc316336.2%59.2%0.12 MB
C03French, Tarrasch21839.4%59.2%0.16 MB
E91King's Indian, 6.Be212036.7%59.2%0.08 MB
C75Ruy Lopez, Modern Steinitz defense2227.3%59.1%0.02 MB
E88King's Indian, Saemisch, Orthodox, 7.d5 c66132.8%59.0%0.04 MB
A47Queen's Indian defense11135.1%59.0%0.08 MB
A39English Opening, Symmetrical, Main line with d48444.0%58.9%0.06 MB
E62King's Indian, Fianchetto variation24135.7%58.9%0.16 MB
A49King's Indian, Fianchetto without c414635.6%58.9%0.10 MB
D19QGD; Dutch variation30933.7%58.9%0.20 MB
C87Ruy Lopez, Closed, Averbach variation5736.8%58.8%0.04 MB
A31English Opening, Symmetrical, Benoni formation12044.2%58.8%0.10 MB
B36Sicilian, Accelerated Fianchetto, Maroczy bind10940.4%58.7%0.07 MB
E80King's Indian, Saemisch variation2330.4%58.7%0.02 MB
C19French, Winawer, Advance, 6...Ne7111229.5%58.6%0.69 MB
E43Nimzo-Indian, Fischer variation7037.1%58.6%0.05 MB
D42QGD; Semi-Tarrasch, 7.Bd34148.8%58.5%0.04 MB
D32QGD; Tarrasch defense4148.8%58.5%0.03 MB
D67QGD; Orthodox defense, Bd3 line, Capablanca freeing manoever5341.5%58.5%0.04 MB
C98Ruy Lopez, Closed, Chigorin, 12...Nc67132.4%58.5%0.06 MB
B06Robatsch (Modern) defense29829.5%58.4%0.21 MB
B71Sicilian, Dragon, Levenfish variation616.7%58.3%0.00 MB
B79Sicilian, Dragon, Yugoslav attack, 12.h4616.7%58.3%0.01 MB
A44Old Benoni defence683.3%58.3%0.00 MB
D46QGD; Semi-Slav 6.Bd323237.9%58.2%0.15 MB
D20Queen's Gambit accepted36036.1%58.1%0.23 MB
E10Queen's pawn game 3. Nf372339.7%58.0%0.47 MB
C77Ruy Lopez, Morphy defence19533.8%57.9%0.15 MB
B82Sicilian, Scheveningen, 6.f48232.9%57.9%0.06 MB
E61King's Indian defense, 3.Nc313328.6%57.9%0.10 MB
E44Nimzo-Indian, Fischer variation, 5.Ne25735.1%57.9%0.04 MB
C09French, Tarrasch, Open variation, Main line22952.0%57.9%0.16 MB
C66Ruy Lopez, Berlin defence, 4.O-O, d614750.3%57.8%0.10 MB
C23Bishop's Opening12241.8%57.8%0.08 MB
C96Ruy Lopez, closed, 8...Na522735.2%57.7%0.16 MB
E39Nimzo-Indian, Classical, Pirc variation11137.8%57.7%0.08 MB
C17French, Winawer, Advance variation19628.6%57.7%0.12 MB
B42Sicilian, Kan, 5.Bd352135.3%57.6%0.35 MB
D24QGA, 4.Nc32045.0%57.5%0.02 MB
B11Caro-Kann, Two knights, 3...Bg44030.0%57.5%0.03 MB
A43Old Benoni defense8727.6%57.5%0.06 MB
E67King's Indian, Fianchetto with ...Nd79434.0%57.4%0.07 MB
B27Sicilian defense16835.1%57.4%0.12 MB
A40Queen's pawn94437.2%57.4%0.63 MB
C14French, Classical variation7630.3%57.2%0.05 MB
C62Ruy Lopez, Old Steinitz defence9734.0%57.2%0.08 MB
C42Petrov's defense107536.3%57.2%0.67 MB
C05French, Tarrasch, Closed variation12534.4%57.2%0.08 MB
D95Gruenfeld with 5. e3 O-O 6. Qb3728.6%57.1%0.01 MB
A51Budapest defense declined70.0%57.1%0.01 MB
B94Sicilian, Najdorf, 6.Bg52821.4%57.1%0.02 MB
C73Ruy Lopez, Modern Steinitz defense, Richter variation2835.7%57.1%0.02 MB
B45Sicilian, Taimanov variation50735.3%57.1%0.31 MB
D35QGD; 3...Nf616937.3%57.1%0.12 MB
A17English Opening12035.8%57.1%0.08 MB
C64Ruy Lopez, Classical (Cordel) defence17834.3%57.0%0.13 MB
D93Gruenfeld with 5. Bf4 O-O 6. e34348.8%57.0%0.03 MB
E60King's Indian defense62435.7%57.0%0.45 MB
B33Sicilian defense109631.8%56.9%0.64 MB
B49Sicilian, Taimanov variation15937.1%56.9%0.11 MB
B65Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defense, 9...Nxd415938.4%56.9%0.10 MB
B88Sicilian, Sozin, Leonhardt variation5827.6%56.9%0.04 MB
A34English Opening, Symmetrical31936.7%56.9%0.23 MB
A90Dutch defense5127.5%56.9%0.04 MB
D55QGD; 6.Nf314646.6%56.8%0.10 MB
A21English Opening31630.1%56.8%0.21 MB
A41Queen's pawn15533.5%56.8%0.11 MB
D17QGD; Slav defense, Czech defence20131.8%56.7%0.12 MB
D68QGD; Orthodox defense, Classical variation6747.8%56.7%0.05 MB
E01Catalan, closed3033.3%56.7%0.02 MB
B43Sicilian, Kan, 5.Nc329437.8%56.6%0.20 MB
C18French, Winawer, Advance variation6825.0%56.6%0.05 MB
D94Gruenfeld, 5.e39950.5%56.6%0.07 MB
B52Sicilian, Canal-Sokolsky attack, 3...Bd718347.5%56.6%0.13 MB
D92Gruenfeld, 5.Bf48451.2%56.5%0.05 MB
C71Ruy Lopez, Modern Steinitz defense4630.4%56.5%0.04 MB
E73King's Indian, 5.Be25431.5%56.5%0.04 MB
E92King's Indian, Classical variation30630.4%56.4%0.21 MB
D27QGA; classical variation86045.5%56.3%0.55 MB
A50Queen's pawn game16633.1%56.3%0.11 MB
C95Ruy Lopez, closed, Breyer, 10.d432635.3%56.3%0.23 MB
D18QGD; Dutch variation1612.5%56.3%0.01 MB
C79Ruy Lopez, Steinitz defense deferred (Russian defence)8032.5%56.3%0.06 MB
C56Two knights defense862.5%56.3%0.01 MB
E56Nimzo-Indian, 4.e3, Main line with 7...Nc61650.0%56.3%0.01 MB
C80Ruy Lopez, Open (Tarrasch) defence18536.8%56.2%0.12 MB
A46Queen's pawn game46234.0%56.2%0.31 MB
B12Caro-Kann defense95634.4%56.1%0.59 MB
C10French, Paulsen variation39336.9%56.1%0.26 MB
E97King's Indian, Orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation)119232.3%56.1%0.75 MB
C41Philidor's defense15834.8%56.0%0.11 MB
A30English Opening, Symmetrical variation124237.3%56.0%0.79 MB
B25Sicilian, Closed6734.3%56.0%0.05 MB
B63Sicilian, Richter-Rauzer, Rauzer attack24432.4%55.9%0.15 MB
E63King's Indian, Fianchetto, Panno variation48035.2%55.9%0.32 MB
E81King's Indian, Saemisch, 5...O-O18635.5%55.9%0.12 MB
E15Queen's Indian, 4.g3472635.4%55.9%2.89 MB
E17Queen's Indian, 5.Bg2 Be714541.4%55.9%0.10 MB
B10Caro-Kann defense66635.4%55.9%0.43 MB
B31Sicilian, Nimzovich-Rossolimo attack (with ...g6, without ...d6)31636.4%55.9%0.22 MB
C11French defense126935.4%55.8%0.76 MB
A33English Opening, Symmetrical26638.7%55.8%0.18 MB
A81Dutch defense12934.1%55.8%0.10 MB
C48Four knights, Spanish variation19142.4%55.8%0.13 MB
D37QGD; 4.Nf3102740.5%55.7%0.64 MB
B73Sicilian, Dragon, Classical, 8.O-O4434.1%55.7%0.04 MB
D76Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb64447.7%55.7%0.04 MB
C55Two knights defense13339.1%55.6%0.10 MB
C78Ruy Lopez, 5.O-O34636.7%55.6%0.23 MB
D34QGD; Tarrasch, 7...Be715143.7%55.6%0.11 MB
B07Pirc defense26736.3%55.6%0.19 MB
B54Sicilian26035.0%55.6%0.19 MB
A78Benoni, Classical with ...Re8 and ...Na6944.4%55.6%0.01 MB
B85Sicilian, Scheveningen, Classical variation with ...Qc7 and ...Nc616243.2%55.6%0.11 MB
D51QGD; 4.Bg5 Nbd7944.4%55.6%0.01 MB
C20King's pawn game922.2%55.6%0.01 MB
A75Benoni, Classical with ...a6 and 10...Bg4922.2%55.6%0.01 MB
D41QGD; Semi-Tarrasch, 5.cd10043.0%55.5%0.07 MB
B14Caro-Kann, Panov-Botvinnik attack, 5...e638242.9%55.5%0.25 MB
D38QGD; Ragozin variation32239.4%55.4%0.22 MB
D63QGD; Orthodox defense, 7.Rc17437.8%55.4%0.05 MB
C92Ruy Lopez, closed, 9.d496337.9%55.4%0.61 MB
C65Ruy Lopez, Berlin defense14931.5%55.4%0.12 MB
E54Nimzo-Indian, 4.e3, Gligoric system with 7...dc16043.1%55.3%0.11 MB
B46Sicilian, Taimanov variation76837.1%55.3%0.47 MB
B08Pirc, Classical (Two knights) system21935.6%55.3%0.16 MB
C67Ruy Lopez, Berlin defence, Open variation47141.6%55.2%0.30 MB
E14Queen's Indian, 4.e331835.5%55.2%0.20 MB
B40Sicilian defense83933.6%55.2%0.56 MB
C69Ruy Lopez, Exchange variation, 5.O-O14529.0%55.2%0.10 MB
C49Four knights, double Ruy Lopez14537.2%55.2%0.10 MB
A14English, Neo-Catalan declined13651.5%55.1%0.10 MB
D21QGA, 3.Nf34932.7%55.1%0.04 MB
D47QGD; Semi-Slav 7.Bc4310434.9%55.0%1.82 MB
E66King's Indian, Fianchetto, Yugoslav Panno4035.0%55.0%0.03 MB
E82King's Indian, Saemisch, double Fianchetto variation1030.0%55.0%0.01 MB
A05Reti Opening, 2..Nf672638.8%55.0%0.49 MB
D30QGD105140.2%54.9%0.68 MB
E11Bogo-Indian defense47834.1%54.9%0.33 MB
D86Gruenfeld, Exchange, Classical variation8342.2%54.8%0.06 MB
A20English Opening90339.6%54.8%0.58 MB
B47Sicilian, Taimanov (Bastrikov) variation111336.8%54.8%0.70 MB
E20Nimzo-Indian defense14634.2%54.8%0.10 MB
C53Giuoco piano42235.5%54.7%0.29 MB
D31QGD, 3.Nc322236.5%54.7%0.16 MB
A70Benoni, Classical with e4 and Nf38527.1%54.7%0.06 MB
D10QGD; Slav defense58636.0%54.7%0.40 MB
C84Ruy Lopez, Closed defense39637.6%54.7%0.25 MB
B61Sicilian, Richter-Rauzer, Larsen variation, 7.Qd24334.9%54.7%0.03 MB
C08French, Tarrasch, Open, 4.exd5 exd520750.2%54.6%0.14 MB
B51Sicilian, Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack15342.5%54.6%0.11 MB
B50Sicilian35033.1%54.6%0.25 MB
D12QGD; Slav defense, 4.e3 Bf535138.5%54.6%0.23 MB
E47Nimzo-Indian, 4.e3 O-O, 5.Bd34450.0%54.5%0.03 MB
B59Sicilian, Boleslavsky variation, 7.Nb31118.2%54.5%0.01 MB
C83Ruy Lopez, Open, Classical defence3348.5%54.5%0.02 MB
C24Bishop's Opening, Berlin defense8937.1%54.5%0.07 MB
A37English Opening, Symmetrical10125.7%54.5%0.07 MB
A11English, Caro-Kann defensive system6844.1%54.4%0.05 MB
E33Nimzo-Indian, Classical variation, 4...Nc65735.1%54.4%0.04 MB
B17Caro-Kann, Steinitz variation43135.7%54.3%0.28 MB
D73Neo-Gruenfeld, 5.Nf37057.1%54.3%0.06 MB
C91Ruy Lopez, closed, 9.d4122635.8%54.3%0.80 MB
B87Sozin with ...a6 and ...b515237.5%54.3%0.10 MB
A04Reti Opening114736.4%54.2%0.77 MB
E22Nimzo-Indian, Spielmann variation1241.7%54.2%0.01 MB
B29Sicilian, Nimzovich-Rubinstein variation2425.0%54.2%0.02 MB
A79Benoni, Classical, 11.f31241.7%54.2%0.01 MB
E32Nimzo-Indian, Classical variation121441.2%54.1%0.74 MB
D85Gruenfeld, exchange variation81648.2%54.1%0.52 MB
C88Ruy Lopez, Closed78035.4%54.1%0.48 MB
D05Queen's pawn game, Zukertort variation11139.6%54.1%0.08 MB
B67Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defense, 8...Bd777829.7%54.0%0.46 MB
A10English Opening38442.4%54.0%0.25 MB
C89Ruy Lopez, Marshall counter-attack11330.1%54.0%0.08 MB
B09Pirc, Austrian attack10241.2%53.9%0.07 MB
D44QGD; Semi-Slav 5.Bg5 dc29533.2%53.9%0.16 MB
C15French, Winawer (Nimzovich) variation9043.3%53.9%0.07 MB
E00Queen's pawn game56938.1%53.9%0.41 MB
C02French, Advance variation55130.3%53.8%0.36 MB
C25Vienna game7936.7%53.8%0.06 MB
A25English Opening, Sicilian Reversed30336.3%53.8%0.21 MB
C01French, Exchange variation23839.5%53.8%0.18 MB
D11QGD; Slav defense, 3.Nf333336.0%53.8%0.24 MB
A15English, 1...Nf6 (Anglo-Indian defense)88437.1%53.7%0.59 MB
B22Sicilian, Alapin's variation (2.c3)71738.5%53.7%0.48 MB
E55Nimzo-Indian, 4.e3, Gligoric system, Bronstein variation82946.1%53.7%0.54 MB
D52QGD14047.1%53.6%0.10 MB
E30Nimzo-Indian, Leningrad variation,5632.1%53.6%0.04 MB
B56Sicilian31034.2%53.5%0.20 MB
E58Nimzo-Indian, 4.e3, Main line with 8...Bxc324732.4%53.4%0.16 MB
B80Sicilian, Scheveningen variation40029.3%53.4%0.24 MB
A84Dutch defense8939.3%53.4%0.07 MB
B19Caro-Kann, Classical, 7...Nd767339.8%53.3%0.41 MB
E16Queen's Indian, Capablanca variation6134.4%53.3%0.04 MB
D78Neo-Gruenfeld, 6.O-O c67739.0%53.2%0.05 MB
B23Sicilian, Closed63534.0%53.2%0.41 MB
C44King's pawn game12839.1%53.1%0.09 MB
B91Sicilian, Najdorf, Zagreb (Fianchetto) variation4932.7%53.1%0.04 MB
E42Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein)16442.7%53.0%0.11 MB
C45Scotch game85340.4%53.0%0.51 MB
B90Sicilian, Najdorf471230.1%53.0%2.57 MB
E34Nimzo-Indian, Classical, Noa variation11749.6%53.0%0.08 MB
D50QGD; 4.Bg51735.3%52.9%0.01 MB
D15QGD; Slav accepted, Exchange variation, 6.Bf4 Bf527234.6%52.9%0.19 MB
D22QGA; Alekhine defense1758.8%52.9%0.01 MB
B15Caro-Kann defense17134.5%52.9%0.12 MB
A58Benko gambit accepted8643.0%52.9%0.06 MB
A28English Opening, Four knights system52740.4%52.8%0.36 MB
D43QGD; Semi-Slav98637.1%52.8%0.61 MB
D58QGD; Tartakower (Makagonov-Bondarevsky) system202144.8%52.8%1.31 MB
D39QGD; Ragozin, Vienna variation53547.3%52.8%0.30 MB
D99Gruenfeld defense, Smyslov, Main line3650.0%52.8%0.02 MB
A13English Opening56338.4%52.8%0.41 MB
A16English Opening14831.1%52.7%0.10 MB
A08Reti Opening, King's Indian attack7432.4%52.7%0.06 MB
D26QGA; classical variation26450.8%52.7%0.18 MB
D77Neo-Gruenfeld, 6.O-O7941.8%52.5%0.06 MB
C82Ruy Lopez, Open, 9.c32025.0%52.5%0.01 MB
B18Caro-Kann, Classical variation14139.7%52.5%0.10 MB
B53Sicilian, Chekhover variation8133.3%52.5%0.06 MB
B41Sicilian, Kan variation6129.5%52.5%0.05 MB
B99Sicilian, Najdorf, 7...Be7 Main line14318.2%52.4%0.08 MB
A45Queen's pawn game64436.2%52.4%0.43 MB
D48QGD; Meran, 8...a656336.2%52.4%0.35 MB
B21Sicilian, Grand Prix attack19137.7%52.4%0.13 MB
E84King's Indian, Saemisch, Panno Main line6435.9%52.3%0.05 MB
C59Two knights defense30632.0%52.3%0.18 MB
A35English Opening, Symmetrical30939.2%52.3%0.22 MB
E12Queen's Indian defense195736.0%52.2%1.22 MB
D02Queen's pawn game, 2. Nf3144735.1%52.2%0.94 MB
C04French, Tarrasch, Guimard Main line2326.1%52.2%0.02 MB
A48King's Indian, East Indian defense36136.0%52.1%0.25 MB
B30Sicilian defense68236.7%52.1%0.48 MB
A01Nimzovich-Larsen attack19528.2%52.1%0.14 MB
B48Sicilian, Taimanov variation63736.3%52.0%0.40 MB
B70Sicilian, Dragon variation7433.8%52.0%0.06 MB
C26Vienna, Falkbeer variation7439.2%52.0%0.05 MB
B44Sicilian defense27538.5%52.0%0.18 MB
E06Catalan, Closed, 5.Nf337746.7%52.0%0.26 MB
C76Ruy Lopez, Modern Steinitz defense, Fianchetto (Bronstein) variation5234.6%51.9%0.04 MB
A07Reti Opening, King's Indian attack (Barcza system)99640.0%51.9%0.69 MB
C07French, Tarrasch, Open variation47346.7%51.9%0.32 MB
B74Sicilian, Dragon, Classical, 9.Nb32729.6%51.9%0.02 MB
D45QGD; Semi-Slav 5.e3362038.8%51.9%2.20 MB
A29English Opening, Four knights, kingside Fianchetto125037.5%51.8%0.76 MB
C43Petrov, Modern (Steinitz) attack25837.6%51.7%0.16 MB
D61QGD; Orthodox defense, Rubinstein variation2948.3%51.7%0.03 MB
D64QGD; Orthodox defense, Rubinstein attack (with Rc1)3043.3%51.7%0.02 MB
C47Four knights, Scotch variation6046.7%51.7%0.05 MB
D82Gruenfeld 4.Bf43246.9%51.6%0.02 MB
C12French, MacCutcheon variation20430.4%51.5%0.13 MB
A27English Opening, Three knights system3727.0%51.4%0.03 MB
C50King's pawn game38938.3%51.3%0.25 MB
B93Sicilian, Najdorf, 6.f423742.6%51.3%0.16 MB
A22English Opening46734.7%51.2%0.30 MB
E59Nimzo-Indian, 4.e3, Main line42843.0%51.2%0.27 MB
D90Gruenfeld, Three knights variation4425.0%51.1%0.03 MB
C86Worrall attack4548.9%51.1%0.04 MB
C46Three knights game13740.9%51.1%0.10 MB
A09Reti Opening, 2..d5 3.c413743.8%51.1%0.11 MB
B66Sicilian, Richter-Rauzer, Rauzer attack, 7...a6273531.6%51.1%1.52 MB
B57Sicilian, Sozin (not Scheveningen)28142.3%51.1%0.20 MB
E04Catalan, Open, 5.Nf356739.3%51.1%0.35 MB
D14QGD; Slav defense, Exchange variation5143.1%51.0%0.03 MB
B83Sicilian, Scheveningen, 6.Be236737.1%51.0%0.25 MB
D40QGD; Semi-Tarrasch defense11041.8%50.9%0.08 MB
A36English Opening, Symmetrical11323.9%50.9%0.08 MB
B35Sicilian, Accelerated Fianchetto, Modern variation with Bc411442.1%50.9%0.08 MB
D97Gruenfeld, Russian variation with 7. e447740.3%50.7%0.30 MB
E21Nimzo-Indian, Three knights variation24035.8%50.4%0.17 MB
D00Queen's pawn game42839.5%50.4%0.29 MB
C00French defense78438.0%50.3%0.51 MB
C28Vienna game3033.3%50.0%0.02 MB
E23Nimzo-Indian, Spielmann, 4...c5, 5.dc Nc6333.3%50.0%0.00 MB
D79Neo-Gruenfeld, 6.O-O, Main line3745.9%50.0%0.03 MB
E79King's Indian, Four pawns attack, Main line333.3%50.0%0.00 MB
E51Nimzo-Indian, 4.e3 e8g8, 5.Nf3 d7d51471.4%50.0%0.01 MB
E65King's Indian, Yugoslav, 7.O-O1250.0%50.0%0.01 MB
D56QGD; Lasker defense4427.3%50.0%0.03 MB
A83Dutch, Staunton gambit, Staunton's line1100.0%50.0%0.00 MB
B37Sicilian, Accelerated Fianchetto, Maroczy bind, 5...Bg71060.0%50.0%0.01 MB
D08QGD; Albin counter-gambit333.3%50.0%0.00 MB
A98Dutch, Ilyin-Genevsky variation with Qc21100.0%50.0%0.00 MB
D71Neo-Gruenfeld, 5.cd1457.1%50.0%0.01 MB
A94Dutch, Stonewall with Ba33100.0%50.0%0.00 MB
C31KGD, Falkbeer counter-gambit2100.0%50.0%0.00 MB
D23Queen's gambit accepted1145.5%50.0%0.01 MB
B39Sicilian, Accelerated Fianchetto, Breyer variation2646.2%50.0%0.02 MB
A57Benko gambit13926.6%50.0%0.10 MB
A93Dutch, Stonewall, Botwinnik variation825.0%50.0%0.01 MB
A69Benoni, Four pawns attack, Main line955.6%50.0%0.01 MB
B34Sicilian, Accelerated Fianchetto, Exchange variation3938.5%50.0%0.03 MB
C93Ruy Lopez, closed, Smyslov defense1729.4%50.0%0.02 MB
E05Catalan, Open, Classical line2123.8%50.0%0.02 MB
B84Sicilian, Scheveningen (Paulsen), Classical variation120336.1%49.8%0.74 MB
A00Irregular Openings40238.1%49.6%0.28 MB
B89Sicilian, Sozin, 7.Be339629.8%49.5%0.24 MB
B20Sicilian defense48337.7%49.5%0.31 MB
E46Nimzo-Indian, 4.e3 O-O8540.0%49.4%0.06 MB
C85Ruy Lopez, Exchange variation doubly deferred (DERLD)32536.6%49.4%0.22 MB
B92Sicilian, Najdorf, Zagreb (Fianchetto) variation74037.2%49.3%0.48 MB
A12English, Caro-Kann defensive system5745.6%49.1%0.05 MB
E48Nimzo-Indian, 4.e3 O-O, 5.Bd3 d55637.5%49.1%0.04 MB
A06Reti Opening, 2..d543535.2%49.1%0.30 MB
D04Queen's pawn game10635.8%49.1%0.08 MB
B64Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defense, 9.f49341.9%48.9%0.06 MB
E40Nimzo-Indian, 4.e34425.0%48.9%0.03 MB
B24Sicilian, Closed4037.5%48.8%0.03 MB
E41Nimzo-Indian, 4.e3 c515534.2%48.7%0.11 MB
B13Caro-Kann, Exchange variation19044.7%48.7%0.13 MB
B77Sicilian, Dragon, Yugoslav attack, 9.Bc43444.1%48.5%0.02 MB
C68Ruy Lopez, Exchange variation2948.3%48.3%0.02 MB
B62Sicilian, Richter-Rauzer, 6...e65530.9%48.2%0.04 MB
D70Neo-Gruenfeld defense2634.6%48.1%0.02 MB
D91Gruenfeld, Three knights variation19232.3%47.9%0.14 MB
B78Sicilian, Dragon, Yugoslav attack, 10.O-O-O4820.8%47.9%0.03 MB
E25Nimzo-Indian, Saemisch variation, Keres variation4757.4%47.9%0.03 MB
E08Catalan, Closed, 7.Qc22334.8%47.8%0.02 MB
B72Sicilian, Dragon, 6.Be32157.1%47.6%0.02 MB
B97