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 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
A71Benoni, Classical, 8.Bg510.0%100.0%
D83Gruenfeld gambit10.0%100.0%
D67QGD; Orthodox defense, Bd3 line, Capablanca freeing manoever50.0%100.0%
B69Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defense, 11.Bxf610.0%100.0%
E82King's Indian, Saemisch, double Fianchetto variation10.0%100.0%
B64Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defense, 9.f420.0%100.0%
E89King's Indian, Saemisch, Orthodox Main line333.3%83.3%
C81Ruy Lopez, Open, Howell attack50.0%80.0%
A51Budapest defense declined2321.7%76.1%
C93Ruy Lopez, closed, Smyslov defense40.0%75.0%
A72Benoni, Classical without 9.O-O40.0%75.0%
A86Dutch with 2.c4 & 3.g31717.6%73.5%
A97Dutch, Ilyin-Genevsky variation1118.2%72.7%
A93Dutch, Stonewall, Botwinnik variation2416.7%70.8%
A54Old Indian, Ukrainian variation3930.8%69.2%
E98King's Indian, Orthodox, Aronin-Taimanov, 9.Ne12227.3%68.2%
D76Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb62931.0%67.2%
E50Nimzo-Indian, 4.e3 e8g8, 5.Nf3, without ...d530.0%66.7%
E37Nimzo-Indian, Classical, Noa variation, Main line, 7.Qc230.0%66.7%
A62Benoni, Fianchetto variation547.4%66.7%
E86King's Indian, Saemisch, Orthodox, 7.Nge2 c61216.7%66.7%
C28Vienna game348.8%66.2%
E07Catalan, Closed, 6...Nbd74818.8%65.6%
C21center game1323.1%65.4%
C82Ruy Lopez, Open, 9.c32429.2%64.6%
C96Ruy Lopez, closed, 8...Na55232.7%64.4%
C75Ruy Lopez, Modern Steinitz defense1442.9%64.3%
E88King's Indian, Saemisch, Orthodox, 7.d5 c6742.9%64.3%
B16Caro-Kann, Bronstein-Larsen variation2123.8%64.3%
E31Nimzo-Indian, Leningrad variation, main line714.3%64.3%
A52Budapest defense7724.7%63.0%
E87King's Indian, Saemisch, Orthodox, 7.d58122.2%63.0%
A17English Opening3522.9%62.9%
C30King's gambit7414.9%62.8%
D55QGD; 6.Nf314325.9%62.6%
D95Gruenfeld with 5. e3 O-O 6. Qb3425.0%62.5%
A92Dutch defense205.0%62.5%
E16Queen's Indian, Capablanca variation7227.8%62.5%
E77King's Indian, Four pawns attack, 6.Be2425.0%62.5%
E93King's Indian, Petrosian system, Main line425.0%62.5%
D34QGD; Tarrasch, 7...Be742824.5%62.3%
B87Sozin with ...a6 and ...b52128.6%61.9%
A85Dutch with 2.c4 & 3.Nc32119.0%61.9%
E33Nimzo-Indian, Classical variation, 4...Nc63818.4%61.8%
C92Ruy Lopez, closed, 9.d410722.4%61.7%
A61Benoni defense7316.4%61.6%
D82Gruenfeld 4.Bf41330.8%61.5%
B32Sicilian defense10123.8%61.4%
B41Sicilian, Kan variation6628.8%61.4%
E46Nimzo-Indian, 4.e3 O-O3125.8%61.3%
C29Vienna gambit, Kaufmann variation2711.1%61.1%
E13Queen's Indian, 4.Nc3, Main line933.3%61.1%
B99Sicilian, Najdorf, 7...Be7 Main line2317.4%60.9%
A18English, Mikenas-Carls variation147.1%60.7%
C13French, Classical4829.2%60.4%
C72Ruy Lopez, Modern Steinitz defense 5.0-03426.5%60.3%
B19Caro-Kann, Classical, 7...Nd7155724.7%60.2%
E91King's Indian, 6.Be213821.7%60.1%
A99Dutch, Ilyin-Genevsky variation with b3100.0%60.0%
E64King's Indian, Fianchetto, Yugoslav system4015.0%60.0%
A76Benoni, Classical, 9...Re8100.0%60.0%
D70Neo-Gruenfeld defense2020.0%60.0%
A81Dutch defense22524.9%59.6%
C97Ruy Lopez, Closed, Chigorin defense4219.0%59.5%
C22center game4320.9%59.3%
E17Queen's Indian, 5.Bg2 Be714126.2%59.2%
A56Benoni defense41617.8%59.1%
B73Sicilian, Dragon, Classical, 8.O-O2218.2%59.1%
A09Reti Opening, 2..d5 3.c415420.8%59.1%
B28Sicilian, O'Kelly variation7924.1%58.9%
C19French, Winawer, Advance, 6...Ne7274322.5%58.9%
D87Gruenfeld, Exchange, Spassky variation3447.1%58.8%
A90Dutch defense13220.5%58.7%
C40King's knight Opening2321.7%58.7%
A70Benoni, Classical with e4 and Nf33520.0%58.6%
D97Gruenfeld, Russian variation with 7. e481224.6%58.5%
A24English Opening, Bremen system with 3...g6616.7%58.3%
B05Alekhine's defense, Modern variation, 4...Bg43030.0%58.3%
A91Dutch defense2433.3%58.3%
E34Nimzo-Indian, Classical, Noa variation3638.9%58.3%
D19QGD; Dutch variation70321.9%58.3%
D07QGD; Chigorin defense18719.3%58.3%
B07Pirc defense29718.9%58.2%
C15French, Winawer (Nimzovich) variation25426.8%57.9%
C04French, Tarrasch, Guimard Main line5117.6%57.8%
E53Nimzo-Indian, 4.e3, Main line with ...c53221.9%57.8%
D41QGD; Semi-Tarrasch, 5.cd27726.7%57.8%
E76King's Indian, Four pawns attack2025.0%57.5%
B94Sicilian, Najdorf, 6.Bg52035.0%57.5%
B38Sicilian, Accelerated Fianchetto, Maroczy bind, 6.Be36722.4%57.5%
B49Sicilian, Taimanov variation18821.3%57.4%
D09QGD; Albin counter-gambit, 5.g32718.5%57.4%
D66QGD; Orthodox defense, Bd3 line6119.7%57.4%
B08Pirc, Classical (Two knights) system28129.2%57.3%
E97King's Indian, Orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation)87920.6%57.3%
D16QGD; Slav accepted, Alapin variation7622.4%57.2%
E19Queen's Indian, Old Main line, 9.Qxc314721.8%57.1%
C83Ruy Lopez, Open, Classical defence728.6%57.1%
E05Catalan, Open, Classical line9929.3%57.1%
D05Queen's pawn game, Zukertort variation38826.3%57.0%
E43Nimzo-Indian, Fischer variation2222.7%56.8%
B31Sicilian, Nimzovich-Rossolimo attack (with ...g6, without ...d6)17626.1%56.8%
A14English, Neo-Catalan declined20632.0%56.8%
D14QGD; Slav defense, Exchange variation12621.4%56.7%
C16French, Winawer, Advance variation18723.5%56.7%
D88Gruenfeld, Spassky variation, Main line, 10...cd, 11.cd1546.7%56.7%
E44Nimzo-Indian, Fischer variation, 5.Ne21520.0%56.7%
B18Caro-Kann, Classical variation34622.0%56.6%
E09Catalan, Closed, Main line7628.9%56.6%
D06Queen's Gambit4617.4%56.5%
B06Robatsch (Modern) defense30222.2%56.5%
C05French, Tarrasch, Closed variation26520.8%56.4%
E18Queen's Indian, Old Main line, 7.Nc314126.2%56.4%
D52QGD18319.7%56.3%
B77Sicilian, Dragon, Yugoslav attack, 9.Bc4812.5%56.3%
B74Sicilian, Dragon, Classical, 9.Nb31625.0%56.3%
E62King's Indian, Fianchetto variation22523.6%56.2%
C41Philidor's defense31821.7%56.1%
C09French, Tarrasch, Open variation, Main line62132.2%56.0%
A10English Opening51519.2%56.0%
B27Sicilian defense19417.0%55.9%
B82Sicilian, Scheveningen, 6.f46823.5%55.9%
E48Nimzo-Indian, 4.e3 O-O, 5.Bd3 d51729.4%55.9%
D99Gruenfeld defense, Smyslov, Main line1729.4%55.9%
E59Nimzo-Indian, 4.e3, Main line175.9%55.9%
A43Old Benoni defense12819.5%55.9%
B56Sicilian25022.0%55.8%
D46QGD; Semi-Slav 6.Bd324224.8%55.8%
D74Neo-Gruenfeld, 6.cd Nxd5, 7.O-O5226.9%55.8%
D21QGA, 3.Nf313129.0%55.7%
E38Nimzo-Indian, Classical, 4...c53525.7%55.7%
A06Reti Opening, 2..d582422.1%55.7%
A37English Opening, Symmetrical13220.5%55.7%
B46Sicilian, Taimanov variation60723.7%55.5%
C65Ruy Lopez, Berlin defense11829.7%55.5%
E94King's Indian, Orthodox variation22028.2%55.5%
D90Gruenfeld, Three knights variation8324.1%55.4%
C58Two knights defense2817.9%55.4%
D12QGD; Slav defense, 4.e3 Bf544223.3%55.3%
C01French, Exchange variation44324.4%55.3%
E66King's Indian, Fianchetto, Yugoslav Panno10521.0%55.2%
C66Ruy Lopez, Berlin defence, 4.O-O, d64835.4%55.2%
A28English Opening, Four knights system58625.4%55.2%
B34Sicilian, Accelerated Fianchetto, Exchange variation6813.2%55.1%
D96Gruenfeld, Russian variation3023.3%55.0%
C59Two knights defense7018.6%55.0%
B26Sicilian, Closed, 6.Be33016.7%55.0%
C71Ruy Lopez, Modern Steinitz defense2030.0%55.0%
D98Gruenfeld, Russian, Smyslov variation4020.0%55.0%
C14French, Classical variation22121.3%55.0%
D17QGD; Slav defense, Czech defence31225.3%55.0%
B51Sicilian, Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack25225.8%55.0%
C64Ruy Lopez, Classical (Cordel) defence9225.0%54.9%
C55Two knights defense13322.6%54.9%
E60King's Indian defense81922.6%54.9%
A04Reti Opening106819.5%54.9%
D20Queen's Gambit accepted59623.2%54.9%
A39English Opening, Symmetrical, Main line with d47321.9%54.8%
B50Sicilian50123.4%54.8%
E10Queen's pawn game 3. Nf388525.3%54.7%
D92Gruenfeld, 5.Bf410824.1%54.6%
E11Bogo-Indian defense70624.2%54.6%
A33English Opening, Symmetrical54724.7%54.6%
A11English, Caro-Kann defensive system5529.1%54.5%
D62QGD; Orthodox defense, 7.Qc2 c5, 8.cd (Rubinstein)3336.4%54.5%
C03French, Tarrasch42122.6%54.5%
B04Alekhine's defense, Modern variation8916.9%54.5%
B13Caro-Kann, Exchange variation37324.7%54.4%
A40Queen's pawn46622.1%54.4%
D93Gruenfeld with 5. Bf4 O-O 6. e34626.1%54.3%
C39King's knight's gambit2330.4%54.3%
A15English, 1...Nf6 (Anglo-Indian defense)58022.8%54.3%
E15Queen's Indian, 4.g3470924.7%54.3%
C63Ruy Lopez, Schilemann defense3522.9%54.3%
D18QGD; Dutch variation9431.9%54.3%
D33QGD; Tarrasch, Schlechter-Rubinstein system4714.9%54.3%
B01Scandinavian (centercounter) center defense51920.2%54.2%
C49Four knights, double Ruy Lopez32032.2%54.2%
D44QGD; Semi-Slav 5.Bg5 dc42920.7%54.2%
A58Benko gambit accepted3619.4%54.2%
A47Queen's Indian defense4816.7%54.2%
A96Dutch, Classical variation2416.7%54.2%
C00French defense131120.7%54.2%
B17Caro-Kann, Steinitz variation134125.0%54.1%
E39Nimzo-Indian, Classical, Pirc variation4926.5%54.1%
C42Petrov's defense142526.9%54.1%
D91Gruenfeld, Three knights variation17223.3%54.1%
A41Queen's pawn25016.0%54.0%
E49Nimzo-Indian, 4.e3, Botvinnik system2528.0%54.0%
D03Torre attack, Tartakower variation20423.5%53.9%
C48Four knights, Spanish variation43521.4%53.9%
A30English Opening, Symmetrical variation232926.8%53.9%
A35English Opening, Symmetrical59028.1%53.9%
E63King's Indian, Fianchetto, Panno variation37521.9%53.9%
D47QGD; Semi-Slav 7.Bc4595026.6%53.8%
A84Dutch defense19724.4%53.8%
B63Sicilian, Richter-Rauzer, Rauzer attack17216.9%53.8%
B00King's pawn Opening27922.2%53.8%
C79Ruy Lopez, Steinitz defense deferred (Russian defence)4017.5%53.8%
C76Ruy Lopez, Modern Steinitz defense, Fianchetto (Bronstein) variation2733.3%53.7%
B22Sicilian, Alapin's variation (2.c3)88525.8%53.7%
D37QGD; 4.Nf3190326.4%53.7%
E68King's Indian, Fianchetto, Classical variation, 8.e433124.5%53.6%
C18French, Winawer, Advance variation12821.1%53.5%
C24Bishop's Opening, Berlin defense11419.3%53.5%
D38QGD; Ragozin variation41726.9%53.5%
C26Vienna, Falkbeer variation18823.9%53.5%
B47Sicilian, Taimanov (Bastrikov) variation98426.8%53.5%
D27QGA; classical variation128027.9%53.4%
D25QGA, 4.e320625.2%53.4%
B12Caro-Kann defense152422.5%53.4%
C67Ruy Lopez, Berlin defence, Open variation31428.3%53.3%
A42Modern defense, Averbakh system4522.2%53.3%
B09Pirc, Austrian attack10521.0%53.3%
B81Sicilian, Scheveningen, Keres attack31820.4%53.3%
B43Sicilian, Kan, 5.Nc313727.7%53.3%
D23Queen's gambit accepted4615.2%53.3%
C85Ruy Lopez, Exchange variation doubly deferred (DERLD)3129.0%53.2%
C50King's pawn game55924.5%53.2%
C46Three knights game39223.7%53.2%
D78Neo-Gruenfeld, 6.O-O c614223.2%53.2%
C90Ruy Lopez, closed (with ...d6)182125.4%53.2%
E67King's Indian, Fianchetto with ...Nd711127.0%53.2%
D10QGD; Slav defense33426.0%53.1%
A46Queen's pawn game52523.2%53.1%
B03Alekhine's defense22418.8%53.1%
C77Ruy Lopez, Morphy defence14524.8%53.1%
C12French, MacCutcheon variation31317.9%53.0%
B70Sicilian, Dragon variation3327.3%53.0%
B10Caro-Kann defense104324.4%53.0%
A21English Opening31629.4%53.0%
E21Nimzo-Indian, Three knights variation18419.0%53.0%
C02French, Advance variation103219.7%52.8%
B15Caro-Kann defense27323.4%52.7%
D11QGD; Slav defense, 3.Nf363021.9%52.7%
D59QGD; Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd59334.4%52.7%
C07French, Tarrasch, Open variation95228.7%52.7%
E12Queen's Indian defense154225.8%52.7%
A48King's Indian, East Indian defense39824.4%52.6%
A25English Opening, Sicilian Reversed49925.5%52.6%
D13QGD; Slav defense, Exchange variation17424.7%52.6%
C17French, Winawer, Advance variation23322.7%52.6%
B30Sicilian defense63722.1%52.5%
A55Old Indian, Main line4020.0%52.5%
D45QGD; Semi-Slav 5.e3219123.5%52.5%
E55Nimzo-Indian, 4.e3, Gligoric system, Bronstein variation59727.5%52.4%
E40Nimzo-Indian, 4.e34214.3%52.4%
C61Ruy Lopez, Bird's defense219.5%52.4%
E14Queen's Indian, 4.e327723.8%52.3%
B14Caro-Kann, Panov-Botvinnik attack, 5...e653827.3%52.3%
D56QGD; Lasker defense10825.0%52.3%
D63QGD; Orthodox defense, 7.Rc16521.5%52.3%
B40Sicilian defense92822.6%52.3%
E92King's Indian, Classical variation22424.1%52.2%
D02Queen's pawn game, 2. Nf3288022.6%52.2%
A07Reti Opening, King's Indian attack (Barcza system)148523.6%52.2%
C53Giuoco piano29821.8%52.2%
A05Reti Opening, 2..Nf669521.7%52.2%
D73Neo-Gruenfeld, 5.Nf313926.6%52.2%
E90King's Indian, 5.Nf311720.5%52.1%
C11French defense337626.0%52.1%
C47Four knights, Scotch variation24227.3%52.1%
C43Petrov, Modern (Steinitz) attack56328.8%52.0%
B35Sicilian, Accelerated Fianchetto, Modern variation with Bc49927.3%52.0%
D04Queen's pawn game27422.3%52.0%
D58QGD; Tartakower (Makagonov-Bondarevsky) system286328.7%52.0%
E61King's Indian defense, 3.Nc310417.3%51.9%
A31English Opening, Symmetrical, Benoni formation33920.6%51.9%
C91Ruy Lopez, closed, 9.d4237626.3%51.9%
D00Queen's pawn game140619.4%51.9%
E00Queen's pawn game53924.9%51.8%
B48Sicilian, Taimanov variation40226.9%51.7%
A38English Opening, Symmetrical14729.9%51.7%
C20King's pawn game8920.2%51.7%
B44Sicilian defense26926.0%51.7%
B23Sicilian, Closed45020.2%51.7%
C70Ruy Lopez,19024.2%51.6%
C10French, Paulsen variation83225.0%51.6%
D30QGD74924.7%51.5%
A45Queen's pawn game75821.6%51.5%
D32QGD; Tarrasch defense6924.6%51.4%
E06Catalan, Closed, 5.Nf363628.9%51.4%
D77Neo-Gruenfeld, 6.O-O7132.4%51.4%
D31QGD, 3.Nc346721.6%51.3%
D15QGD; Slav accepted, Exchange variation, 6.Bf4 Bf548021.3%51.3%
B92Sicilian, Najdorf, Zagreb (Fianchetto) variation48726.1%51.2%
A34English Opening, Symmetrical44822.1%51.2%
A50Queen's pawn game42828.0%51.2%
C87Ruy Lopez, Closed, Averbach variation4314.0%51.2%
C06French, Tarrasch, Closed variation, Main line73526.7%51.2%
A00Irregular Openings94121.7%51.1%
E32Nimzo-Indian, Classical variation88627.2%51.1%
B58Sicilian, Classical4725.5%51.1%
E01Catalan, closed4924.5%51.0%
A02Bird's Opening5014.0%51.0%
B36Sicilian, Accelerated Fianchetto, Maroczy bind10032.0%51.0%
A80Dutch25724.1%51.0%
D24QGA, 4.Nc35822.4%50.9%
B42Sicilian, Kan, 5.Bd324321.8%50.8%
C08French, Tarrasch, Open, 4.exd5 exd551530.5%50.8%
E04Catalan, Open, 5.Nf391026.5%50.7%
B89Sicilian, Sozin, 7.Be328017.1%50.7%
B90Sicilian, Najdorf344022.7%50.7%
B02Alekhine's defense7223.6%50.7%
D79Neo-Gruenfeld, 6.O-O, Main line7731.2%50.6%
E81King's Indian, Saemisch, 5...O-O8220.7%50.6%
B45Sicilian, Taimanov variation37125.6%50.5%
D94Gruenfeld, 5.e39924.2%50.5%
A13English Opening55621.4%50.4%
A20English Opening150624.7%50.4%
D26QGA; classical variation48724.2%50.3%
E47Nimzo-Indian, 4.e3 O-O, 5.Bd31457.1%50.0%
A77Benoni, Classical, 9...Re8, 10.Nd21100.0%50.0%
B33Sicilian defense21222.6%50.0%
B75Sicilian, Dragon, Yugoslav attack4131.7%50.0%
C69Ruy Lopez, Exchange variation, 5.O-O12927.1%50.0%
D42QGD; Semi-Tarrasch, 7.Bd37724.7%50.0%
E84King's Indian, Saemisch, Panno Main line850.0%50.0%
E23Nimzo-Indian, Spielmann, 4...c5, 5.dc Nc620.0%50.0%
D61QGD; Orthodox defense, Rubinstein variation4422.7%50.0%
D57QGD; Lasker defense, Main line1020.0%50.0%
B67Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defense, 8...Bd727419.7%50.0%
A63Benoni, Fianchetto variation, 9...Nbd7333.3%50.0%
E85King's Indian, Saemisch, Orthodox variation333.3%50.0%
D81Gruenfeld; Russian variation450.0%50.0%
C52Evans gambit1822.2%50.0%
A49King's Indian, Fianchetto without c414226.8%50.0%
E99King's Indian, Orthodox, Aronin-Taimanov, Main line1100.0%50.0%
A32English Opening, Symmetrical1822.2%50.0%
A95Dutch, Stonewall with Nc32100.0%50.0%
A67Benoni, Taimanov variation20.0%50.0%
E26Nimzo-Indian, Saemisch variation, 4. a3 Bxc3+ 5. bxc3 c5 6. e3933.3%50.0%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc33542.9%50.0%
E45Nimzo-Indian, 4.e3, Bronstein (Byrne) variation825.0%50.0%
C60Ruy Lopez9921.2%50.0%
A59Benko gambit, 7.e41100.0%50.0%
C31KGD, Falkbeer counter-gambit1520.0%50.0%
B59Sicilian, Boleslavsky variation, 7.Nb3333.3%50.0%
B39Sicilian, Accelerated Fianchetto, Breyer variation3141.9%50.0%
D22QGA; Alekhine defense2718.5%50.0%
E80King's Indian, Saemisch variation119.1%50.0%
B91Sicilian, Najdorf, Zagreb (Fianchetto) variation3026.7%50.0%
B84Sicilian, Scheveningen (Paulsen), Classical variation93425.5%50.0%
B65Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defense, 9...Nxd41414.3%50.0%
C45Scotch game62322.8%49.9%
D43QGD; Semi-Slav90621.5%49.8%
A29English Opening, Four knights, kingside Fianchetto250829.1%49.8%
A53Old Indian defense18424.5%49.7%
B11Caro-Kann, Two knights, 3...Bg410019.0%49.5%
B83Sicilian, Scheveningen, 6.Be216524.8%49.4%
D86Gruenfeld, Exchange, Classical variation8122.2%49.4%
E58Nimzo-Indian, 4.e3, Main line with 8...Bxc37128.2%49.3%
A23English Opening, Bremen system, Keres variation6726.9%49.3%
D48QGD; Meran, 8...a6125024.9%49.1%
B52Sicilian, Canal-Sokolsky attack, 3...Bd724530.2%49.0%
D29QGA; Classical variation 8...Bb718923.8%48.9%
E54Nimzo-Indian, 4.e3, Gligoric system with 7...dc4725.5%48.9%
E08Catalan, Closed, 7.Qc24717.0%48.9%
D01Richter-Veresov attack22226.6%48.9%
A01Nimzovich-Larsen attack52623.4%48.8%
D53QGD; 4.Bg5 Be73737.8%48.6%
B53Sicilian, Chekhover variation7435.1%48.6%
C78Ruy Lopez, 5.O-O28426.8%48.6%
A36English Opening, Symmetrical10528.6%48.6%
E42Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein)9825.5%48.5%
B57Sicilian, Sozin (not Scheveningen)12820.3%48.4%
E52Nimzo-Indian, 4.e3, Main line with ...b63221.9%48.4%
B76Sicilian, Dragon, Yugoslav attack, 7...O-O28023.2%48.4%
B72Sicilian, Dragon, 6.Be33119.4%48.4%
B20Sicilian defense27320.5%48.4%
E20Nimzo-Indian defense14920.1%48.3%
E70King's Indian, 4.e42934.5%48.3%
B93Sicilian, Najdorf, 6.f45422.2%48.1%
A57Benko gambit8018.8%48.1%
A83Dutch, Staunton gambit, Staunton's line2619.2%48.1%
D35QGD; 3...Nf628023.2%48.0%
B95Sicilian, Najdorf, 6...e62540.0%48.0%
B85Sicilian, Scheveningen, Classical variation with ...Qc7 and ...Nc62532.0%48.0%
C62Ruy Lopez, Old Steinitz defence4918.4%48.0%
B37Sicilian, Accelerated Fianchetto, Maroczy bind, 5...Bg72429.2%47.9%
B80Sicilian, Scheveningen variation19017.9%47.9%
B66Sicilian, Richter-Rauzer, Rauzer attack, 7...a6280820.6%47.9%
A22English Opening88928.3%47.8%
C68Ruy Lopez, Exchange variation11128.8%47.7%
D85Gruenfeld, exchange variation69630.0%47.6%
B25Sicilian, Closed8118.5%47.5%
B54Sicilian19722.8%47.5%
E35Nimzo-Indian, Classical, Noa variation, 5. cxd5 exd55724.6%47.4%
A60Benoni defense1910.5%47.4%
C44King's pawn game26526.8%47.4%
B60Sicilian, Richter-Rauzer5525.5%47.3%
B24Sicilian, Closed6921.7%47.1%
C84Ruy Lopez, Closed defense6829.4%47.1%
E83King's Indian, Saemisch, 6...Nc6170.0%47.1%
E25Nimzo-Indian, Saemisch variation, Keres variation4615.2%46.7%
D40QGD; Semi-Tarrasch defense32930.7%46.7%
A27English Opening, Three knights system2835.7%46.4%
A08Reti Opening, King's Indian attack11018.2%46.4%
C80Ruy Lopez, Open (Tarrasch) defence30228.8%46.2%
A26English Opening, Closed system10419.2%46.2%
C57Two knights defense6423.4%46.1%
D39QGD; Ragozin, Vienna variation14927.5%46.0%
C88Ruy Lopez, Closed19724.9%45.9%
C86Worrall attack4934.7%45.9%
D80Gruenfeld defense4930.6%45.9%
B29Sicilian, Nimzovich-Rubinstein variation2433.3%45.8%
A16English Opening2433.3%45.8%
C27Vienna game4613.0%45.7%
C23Bishop's Opening7619.7%45.4%
B62Sicilian, Richter-Rauzer, 6...e65427.8%45.4%
A03Bird's Opening4214.3%45.2%
E73King's Indian, 5.Be22123.8%45.2%
D36QGD; Exchange, positional line, 6.Qc21030.0%45.0%
D60QGD; Orthodox defense2817.9%44.6%
B21Sicilian, Grand Prix attack17520.6%44.6%
B97Sicilian, Najdorf, 7...Qb654619.4%44.3%
C25Vienna game10521.9%44.3%
E95King's Indian, Orthodox, 7...Nbd7, 8.Re13423.5%44.1%
B55Sicilian, Prins variation, Venice attack812.5%43.8%
C73Ruy Lopez, Modern Steinitz defense, Richter variation2437.5%43.8%
C51Evans gambit declined3116.1%43.5%
C74Ruy Lopez, Modern Steinitz defense2343.5%43.5%
E30Nimzo-Indian, Leningrad variation,4613.0%43.5%
E51Nimzo-Indian, 4.e3 e8g8, 5.Nf3 d7d53040.0%43.3%
C54Guioco piano1414.3%42.9%
D64QGD; Orthodox defense, Rubinstein attack (with Rc1)1428.6%42.9%
A89Dutch, Leningrad, Main variation with Nc61428.6%42.9%
E41Nimzo-Indian, 4.e3 c58315.7%42.8%
E65King's Indian, Yugoslav, 7.O-O3426.5%42.6%
D28QGA; Classical variation 7.Qe26126.2%42.6%
A19English, Mikenas-Carls, Sicilian variation2711.1%42.6%
A12English, Caro-Kann defensive system4015.0%42.5%
A88Dutch, Leningrad, Main variation with 7...c64623.9%42.4%
C89Ruy Lopez, Marshall counter-attack5619.6%42.0%
C36KGA, Abbazia defense (Classical defense, Modern defense)3016.7%41.7%
B61Sicilian, Richter-Rauzer, Larsen variation, 7.Qd2185.6%41.7%
A87Dutch, Leningrad, Main variation3016.7%41.7%
C56Two knights defense185.6%41.7%
E02Catalan, open, 5.Qa4650.0%41.7%
B96Sicilian, Najdorf, 7.f42825.0%41.1%
D08QGD; Albin counter-gambit3920.5%41.0%
D50QGD; 4.Bg52227.3%40.9%
C33King's gambit accepted7522.7%40.7%
A82Dutch, Staunton gambit1631.3%40.6%
D49QGD; Meran, 11. Nxb56714.9%40.3%
A73Benoni, Classical, 9.O-O50.0%40.0%
B71Sicilian, Dragon, Levenfish variation50.0%40.0%
A65Benoni, 6.e4540.0%40.0%
E56Nimzo-Indian, 4.e3, Main line with 7...Nc61513.3%40.0%
E69King's Indian, Fianchetto, Classical Main line2040.0%40.0%
E71King's Indian, Makagonov system (5.h3)1926.3%39.5%
B88Sicilian, Sozin, Leonhardt variation5527.3%39.1%
B68Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defense, 9...Be7911.1%38.9%
D71Neo-Gruenfeld, 5.cd475.0%37.5%
E29Nimzo-Indian, Saemisch variation, Main line825.0%37.5%
E22Nimzo-Indian, Spielmann variation1118.2%36.4%
C34King's knight's gambit549.3%36.1%
E24Nimzo-Indian, Saemisch variation1323.1%34.6%
B98Sicilian, Najdorf, 7...Be74216.7%34.5%
E74King's Indian, Averbakh, 6...c530.0%33.3%
E36Nimzo-Indian, Classical, Noa variation, 5. a3633.3%33.3%
A69Benoni, Four pawns attack, Main line30.0%33.3%
C37KGA, Quaade gambit1921.1%31.6%
D65QGD; Orthodox defense, Rubinstein attack, Main line520.0%30.0%
A94Dutch, Stonewall with Ba3560.0%30.0%
B86Sicilian, Sozin attack1414.3%28.6%
A44Old Benoni defence911.1%27.8%
E27Nimzo-Indian, Saemisch variation, 5...0-0450.0%25.0%
C32KGD, Falkbeer, 5. dxe4250.0%25.0%
C38King's knight's gambit40.0%25.0%
D51QGD; 4.Bg5 Nbd71315.4%23.1%
C35KGA, Cunningham defense100.0%20.0%
E72King's Indian with e4 & g350.0%20.0%
E28Nimzo-Indian, Saemisch variation, 6. e3333.3%16.7%
A98Dutch, Ilyin-Genevsky variation with Qc220.0%0.0%
D72Neo-Gruenfeld, 5.cd, Main line30.0%0.0%
A68Benoni, Four pawns attack10.0%0.0%
Created in 2005-2012 by Kirill Kryukov
Updated on June 16, 2013