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