CCRL 40/40
Downloads and Statistics
June 18, 2018
Testing summary:
Total: 849'893 games
played by 2'196 programs
118931 CPU days (X2 4600+)

White wins: 292'067 (34.4%)
Black wins: 216'114 (25.4%)
Draws: 341'712 (40.2%)
White score: 54.5%

Opening statistics

This page shows how many games in our database were played from various known openings. The table also shows average draw percentage and white score we observed in our games.

ECOOpeningNumber
of
games
DrawsWhite
score
Commented
PGN
C20Alapin's opening2128.6%61.9%
B02Alekhine's defence59235.8%54.9%
B03Alekhine's defence10833.3%62.0%
B03Alekhine's defence, Balogh variation1833.3%61.1%
B02Alekhine's defence, Brooklyn defence714.3%35.7%
B02Alekhine's defence, Kmoch variation1020.0%20.0%
B02Alekhine's defence, Krejcik variation425.0%12.5%
B02Alekhine's defence, Maroczy variation9035.6%57.8%
B02Alekhine's defence, Saemisch attack27138.0%49.6%
B02Alekhine's defence, Scandinavian variation24641.5%52.8%
B02Alekhine's defence, Spielmann variation1729.4%44.1%
B02Alekhine's defence, Steiner variation944.4%55.6%
B02Alekhine's defence, Two pawns' (Lasker's) attack30342.9%54.5%
B03Alekhine's defence, exchange variation66039.7%57.9%
B03Alekhine's defence, exchange, Karpov variation955.6%50.0%
B03Alekhine's defence, four pawns attack24631.3%65.2%
B03Alekhine's defence, four pawns attack, 6...Nc61330.8%46.2%
B03Alekhine's defence, four pawns attack, 7.Be311736.8%67.9%
B03Alekhine's defence, four pawns attack, Ilyin-Genevsky var.742.9%21.4%
B03Alekhine's defence, four pawns attack, Planinc variation728.6%28.6%
B03Alekhine's defence, four pawns attack, Trifunovic variation6735.8%68.7%
B03Alekhine's defence, four pawns attack, fianchetto variation12032.5%59.6%
B04Alekhine's defence, modern variation24835.5%60.9%
B05Alekhine's defence, modern variation, 4...Bg461933.0%64.1%
B05Alekhine's defence, modern, Alekhine variation742.9%50.0%
B05Alekhine's defence, modern, Flohr variation14037.1%62.9%
B04Alekhine's defence, modern, Keres variation4734.0%72.3%
B04Alekhine's defence, modern, Larsen variation82542.7%60.1%
B05Alekhine's defence, modern, Panov variation1526.7%60.0%
B04Alekhine's defence, modern, Schmid variation15038.7%60.7%
B05Alekhine's defence, modern, Vitolins attack1050.0%45.0%
B04Alekhine's defence, modern, fianchetto variation70634.3%57.2%
A00Amar (Paris) opening1844.4%33.3%
A00Amar gambit10.0%0.0%
A00Amsterdam attack10.0%100.0%
A00Anderssen's opening41341.9%50.5%
A00Anti-Borg (Desprez) opening30.0%33.3%
B00Barnes defence250.0%75.0%
A00Battambang opening1631.3%46.9%
A40Beefeater defence3627.8%66.7%
A57Benko gambit68735.8%56.2%
A59Benko gambit4143.9%63.4%
A58Benko gambit accepted71133.8%59.2%
A57Benko gambit half accepted82839.5%58.2%
A59Benko gambit, 7.e4850.0%50.0%
A58Benko gambit, Nd2 variation1241.7%62.5%
A59Benko gambit, Ne2 variation520.0%30.0%
A57Benko gambit, Zaitsev system8341.0%47.0%
A58Benko gambit, fianchetto variation15444.8%60.7%
A59Benko gambit, main line11841.5%66.5%
A00Benko's opening686642.1%52.3%
A00Benko's opening, reversed Alekhine11542.6%48.3%
A56Benoni defence64533.3%59.9%
A60Benoni defence14425.0%62.5%
A61Benoni defence50332.2%62.0%
A56Benoni defence, Hromodka system40324.6%64.4%
A65Benoni, 6.e433528.1%56.4%
A66Benoni, Mikenas variation1921.1%52.6%
A61Benoni, Nimzovich (knight's tour) variation37128.0%58.5%
A67Benoni, Taimanov variation23426.5%63.2%
A61Benoni, Uhlmann variation19822.2%39.9%
A78Benoni, classical with ...Re8 and ...Na64936.7%61.2%
A75Benoni, classical with ...a6 and 10...Bg45527.3%68.2%
A70Benoni, classical with e4 and Nf359039.7%59.5%
A70Benoni, classical without 9.O-O1020.0%50.0%
A72Benoni, classical without 9.O-O6445.3%61.7%
A79Benoni, classical, 11.f35831.0%60.3%
A71Benoni, classical, 8.Bg59829.6%56.6%
A76Benoni, classical, 9...Re810041.0%63.5%
A77Benoni, classical, 9...Re8, 10.Nd213227.3%68.2%
A74Benoni, classical, 9...a6, 10.a42142.9%73.8%
A73Benoni, classical, 9.O-O5728.1%59.6%
A61Benoni, fianchetto variation1414.3%78.6%
A62Benoni, fianchetto variation80034.6%55.8%
A64Benoni, fianchetto, 11...Re813241.7%45.1%
A63Benoni, fianchetto, 9...Nbd78833.0%67.6%
A68Benoni, four pawns attack7733.8%58.4%
A69Benoni, four pawns attack, main line8338.6%47.0%
A66Benoni, pawn storm variation540.0%60.0%
A02Bird's opening315736.4%49.0%
A03Bird's opening310035.9%47.6%
A03Bird's opening, Lasker variation11029.1%46.4%
A02Bird's opening, Swiss gambit250.0%75.0%
A03Bird's opening, Williams gambit2937.9%63.8%
A02Bird, From gambit16336.2%50.6%
A02Bird, From gambit, Lasker variation2955.2%58.6%
A02Bird, From gambit, Lipke variation10.0%0.0%
A02Bird, Hobbs gambit560.0%70.0%
C23Bishop's opening17936.9%54.2%
C24Bishop's opening, Berlin defence110840.5%53.1%
C23Bishop's opening, Calabrese counter-gambit, Jaenisch variation30.0%100.0%
C23Bishop's opening, Classical variation5438.9%52.8%
C23Bishop's opening, Lisitsyn variation10.0%0.0%
C23Bishop's opening, Lopez gambit20.0%0.0%
C23Bishop's opening, MacDonnell double gambit250.0%25.0%
C23Bishop's opening, Philidor counter-attack15756.1%48.4%
C23Bishop's opening, Philidor variation944.4%55.6%
C24Bishop's opening, Ponziani gambit1323.1%26.9%
C24Bishop's opening, Urusov gambit5431.5%36.1%
C23Bishop's opening, Wing gambit250.0%75.0%
D00Blackmar gambit21240.1%40.8%
A45Blackmar-Diemer gambit20128.4%51.0%
D00Blackmar-Diemer gambit3020.0%40.0%
D00Blackmar-Diemer, Euwe defence2821.4%46.4%
E10Blumenfeld counter-gambit31841.5%55.0%
E10Blumenfeld counter-gambit accepted12540.8%53.2%
E10Blumenfeld counter-gambit, Dus-Chotimursky variation17435.1%57.2%
E10Blumenfeld counter-gambit, Spielmann variation10133.7%58.4%
C27Boden-Kieseritsky gambit4032.5%31.3%
C27Boden-Kieseritsky gambit, Lichtenhein defence560.0%30.0%
E11Bogo-Indian defence156039.3%54.6%
E11Bogo-Indian defence, Gruenfeld variation206540.5%56.0%
E11Bogo-Indian defence, Monticelli trap1546.7%43.3%
E11Bogo-Indian defence, Nimzovich variation148938.8%57.6%
A52Budapest defence3836.8%52.6%
A51Budapest defence declined742.9%64.3%
A52Budapest, Adler variation18144.8%53.3%
A52Budapest, Alekhine variation1625.0%68.8%
A52Budapest, Alekhine variation, Balogh gambit1100.0%50.0%
A52Budapest, Alekhine, Abonyi variation6229.0%62.9%
A51Budapest, Fajarowicz variation5933.9%62.7%
A51Budapest, Fajarowicz, Steiner variation560.0%50.0%
A52Budapest, Rubinstein variation37141.2%60.2%
A45Canard opening1338.5%26.9%
B10Caro-Kann defence224235.4%52.9%
B12Caro-Kann defence22235.6%53.8%
B15Caro-Kann defence22332.3%52.0%
B12Caro-Kann, 3.Nd217040.0%60.6%
B15Caro-Kann, Alekhine gambit2339.1%50.0%
B16Caro-Kann, Bronstein-Larsen variation48332.3%61.5%
B12Caro-Kann, Edinburgh variation4146.3%57.3%
B15Caro-Kann, Forgacs variation22441.5%55.6%
B10Caro-Kann, Goldman (Spielmann) variation10039.0%50.5%
B15Caro-Kann, Gurgenidze counter-attack366.7%66.7%
B15Caro-Kann, Gurgenidze system32138.3%58.1%
B10Caro-Kann, Hillbilly attack20.0%50.0%
B13Caro-Kann, Panov-Botvinnik attack102547.8%52.7%
B14Caro-Kann, Panov-Botvinnik attack, 5...e6183446.3%55.3%
B14Caro-Kann, Panov-Botvinnik attack, 5...g631850.0%53.3%
B13Caro-Kann, Panov-Botvinnik, Czerniak variation3438.2%48.5%
B13Caro-Kann, Panov-Botvinnik, Gunderam attack1428.6%50.0%
B13Caro-Kann, Panov-Botvinnik, Herzog defence1631.3%53.1%
B13Caro-Kann, Panov-Botvinnik, Reifir (Spielmann) variation366.7%66.7%
B13Caro-Kann, Panov-Botvinnik, normal variation9652.1%57.3%
B15Caro-Kann, Rasa-Studier gambit1216.7%33.3%
B17Caro-Kann, Steinitz variation374443.2%53.6%
B15Caro-Kann, Tartakower (Nimzovich) variation34040.9%55.4%
B12Caro-Kann, Tartakower (fantasy) variation67738.0%55.9%
B10Caro-Kann, Two knights variation37837.3%59.7%
B11Caro-Kann, Two knights, 3...Bg489439.8%56.3%
B12Caro-Kann, advance variation1024638.1%56.3%
B12Caro-Kann, advance, Short variation4833.3%52.1%
B10Caro-Kann, anti-Caro-Kann defence55732.9%60.4%
B10Caro-Kann, anti-anti-Caro-Kann defence136447.7%51.8%
B18Caro-Kann, classical variation158344.6%54.3%
B18Caro-Kann, classical, 6.h456641.7%53.9%
B19Caro-Kann, classical, 7...Nd738350.1%53.0%
B18Caro-Kann, classical, Flohr variation9055.6%50.0%
B18Caro-Kann, classical, Maroczy attack1216.7%41.7%
B19Caro-Kann, classical, Spassky variation269039.7%56.6%
B10Caro-Kann, closed (Breyer) variation74238.4%52.8%
B13Caro-Kann, exchange variation84040.1%51.6%
B13Caro-Kann, exchange, Rubinstein variation13736.5%53.3%
B12Caro-Masi defence1100.0%50.0%
B00Carr's defence450.0%50.0%
E00Catalan opening327342.7%54.8%
E01Catalan, closed51348.7%53.0%
E06Catalan, closed, 5.Nf3297748.3%54.0%
E07Catalan, closed, 6...Nbd77136.6%52.1%
E08Catalan, closed, 7.Qc29439.4%61.2%
E07Catalan, closed, Botvinnik variation7243.1%43.8%
E08Catalan, closed, Qc2 & b321643.5%51.4%
E08Catalan, closed, Spassky gambit728.6%57.1%
E08Catalan, closed, Zagoryansky variation475.0%37.5%
E09Catalan, closed, main line23033.9%61.3%
E04Catalan, open, 5.Nf3438143.5%53.6%
E02Catalan, open, 5.Qa414945.6%58.4%
E03Catalan, open, 5.Qa4 Nbd7, 6.Qxc48560.0%42.9%
E03Catalan, open, Alekhine variation1822.2%38.9%
E05Catalan, open, classical line10654.7%53.8%
C21Centre game16243.8%57.7%
C22Centre game40537.5%46.2%
C22Centre game, Berger variation36437.9%53.8%
C22Centre game, Charousek variation650.0%58.3%
C22Centre game, Hall variation1752.9%38.2%
C22Centre game, Paulsen attack21538.1%50.7%
A00Clemenz (Mead's, Basman's or de Klerk's) opening3729.7%39.2%
D05Colle system18547.0%54.9%
B00Corn stalk defence250.0%25.0%
A56Czech Benoni defence30727.0%67.3%
A56Czech Benoni, King's Indian system4916.3%67.3%
C21Danish gambit12740.9%48.8%
C21Danish gambit, Collijn defence475.0%37.5%
C21Danish gambit, Schlechter defence714.3%50.0%
C21Danish gambit, Soerensen defence3959.0%57.7%
E10Doery defence2445.8%56.3%
C44Dresden opening40.0%25.0%
A00Dunst (Sleipner, Heinrichsen) opening179035.8%49.3%
A00Durkin's attack837.5%31.3%
A80Dutch220035.3%54.8%
A81Dutch defence332437.8%56.6%
A84Dutch defence58039.1%57.0%
A90Dutch defence102939.0%60.9%
A91Dutch defence10833.3%52.8%
A92Dutch defence7347.9%59.6%
A92Dutch defence, Alekhine variation3540.0%62.9%
A81Dutch defence, Blackburne variation5431.5%52.8%
A90Dutch defence, Dutch-Indian (Nimzo-Dutch) variation21235.4%61.6%
A84Dutch defence, Rubinstein variation29835.6%58.4%
A85Dutch with c4 & Nc367835.5%54.6%
A86Dutch with c4 & g310537.1%64.3%
A80Dutch, 2.Bg5 variation101333.2%54.6%
A82Dutch, Balogh defence1428.6%78.6%
A86Dutch, Hort-Antoshin system475.0%62.5%
A97Dutch, Ilyin-Genevsky variation5335.8%55.7%
A98Dutch, Ilyin-Genevsky variation with Qc26232.3%54.8%
A99Dutch, Ilyin-Genevsky variation with b313438.1%62.3%
A97Dutch, Ilyin-Genevsky, Winter variation8637.2%65.1%
A80Dutch, Korchnoi attack3426.5%54.4%
A80Dutch, Krejcik gambit26734.5%53.9%
A86Dutch, Leningrad variation18133.7%58.3%
A81Dutch, Leningrad, Basman system450.0%75.0%
A81Dutch, Leningrad, Karlsbad variation650.0%58.3%
A87Dutch, Leningrad, main variation34440.1%55.2%
A89Dutch, Leningrad, main variation with Nc638136.0%63.6%
A88Dutch, Leningrad, main variation with c688939.6%57.9%
A80Dutch, Manhattan (Alapin, Ulvestad) variation2339.1%58.7%
A82Dutch, Staunton gambit11936.1%36.6%
A84Dutch, Staunton gambit deferred955.6%27.8%
A83Dutch, Staunton gambit, Alekhine variation333.3%50.0%
A83Dutch, Staunton gambit, Chigorin variation7532.0%52.0%
A83Dutch, Staunton gambit, Lasker variation1546.7%43.3%
A83Dutch, Staunton gambit, Nimzovich variation20.0%0.0%
A83Dutch, Staunton gambit, Staunton's line14337.8%50.3%
A82Dutch, Staunton gambit, Tartakower variation616.7%41.7%
A96Dutch, classical variation24437.3%59.6%
A92Dutch, stonewall variation8447.6%58.3%
A94Dutch, stonewall with Ba35350.9%57.5%
A92Dutch, stonewall with Nc32040.0%45.0%
A95Dutch, stonewall with Nc323630.9%58.7%
A93Dutch, stonewall, Botwinnik variation12035.0%61.7%
A95Dutch, stonewall: Chekhover variation1100.0%50.0%
A90Dutch-Indian, Alekhine variation5538.2%60.9%
E10Dzindzikhashvili defence8752.9%58.6%
A10English opening275438.1%54.8%
A13English opening197736.7%52.0%
A15English opening1132443.1%53.4%
A16English opening131335.7%53.4%
A17English opening21938.4%53.0%
A20English opening569738.2%54.3%
A21English opening149733.2%55.5%
A22English opening73337.7%51.3%
A13English opening, Agincourt variation132239.9%53.9%
A15English, 1...Nf6 (Anglo-Indian defense)115840.2%54.5%
A10English, Adorjan defence48338.3%53.7%
A10English, Anglo-Dutch defense70633.9%52.3%
A16English, Anglo-Gruenfeld defense25442.5%53.5%
A16English, Anglo-Gruenfeld defense, Korchnoi variation8836.4%58.0%
A16English, Anglo-Gruenfeld, Czech defense17034.1%63.5%
A16English, Anglo-Gruenfeld, Smyslov defense15832.3%56.0%
A22English, Bellon gambit1338.5%57.7%
A12English, Bled variation1741.2%61.8%
A26English, Botvinnik system32937.1%52.3%
A28English, Bradley Beach variation5221.2%37.5%
A24English, Bremen system with ...g616639.8%48.2%
A23English, Bremen system, Keres variation61840.3%48.5%
A22English, Bremen, Smyslov system153739.0%48.8%
A22English, Bremen, reverse dragon66840.1%50.6%
A12English, Capablanca's variation7634.2%47.4%
A22English, Carls' Bremen system42740.0%54.0%
A11English, Caro-Kann defensive system136739.9%53.7%
A12English, Caro-Kann defensive system22237.4%48.4%
A12English, Caro-Kann defensive system, Bogolyubov variation8646.5%53.5%
A10English, Jaenisch gambit20.0%100.0%
A21English, Keres variation1225.0%45.8%
A21English, Kramnik-Shirov counterattack213040.3%52.3%
A13English, Kurajica defence7834.6%57.1%
A12English, London defensive system12642.1%52.0%
A18English, Mikenas-Carls variation18438.0%57.6%
A18English, Mikenas-Carls, Flohr variation33940.1%58.7%
A18English, Mikenas-Carls, Kevitz variation2429.2%47.9%
A19English, Mikenas-Carls, Sicilian variation37441.7%54.5%
A28English, Nenarokov variation12040.0%51.7%
A13English, Neo-Catalan73840.9%53.1%
A13English, Neo-Catalan accepted113945.9%56.2%
A14English, Neo-Catalan declined81643.4%54.2%
A12English, New York (London) defensive system3452.9%44.1%
A17English, Nimzo-English opening182539.4%53.6%
A20English, Nimzovich variation7038.6%59.3%
A20English, Nimzovich, Flohr variation16436.6%46.3%
A17English, Queens Indian formation24236.8%60.5%
A17English, Queens Indian, Romanishin variation6227.4%60.5%
A13English, Romanishin gambit26740.8%56.4%
A25English, Sicilian reversed81534.6%52.8%
A21English, Smyslov defence3630.6%59.7%
A14English, Symmetrical, Keres defence52947.6%57.1%
A12English, Torre defensive system4438.6%58.0%
A21English, Troeger defence13328.6%53.4%
A13English, Wimpey system12441.9%50.8%
A25English, closed system75934.4%54.3%
A26English, closed system31237.2%51.6%
A25English, closed system (without ...d6)11927.7%55.0%
A25English, closed, 5.Rb144840.4%52.8%
A25English, closed, 5.Rb1 Taimanov variation825.0%50.0%
A25English, closed, Hort variation3636.1%54.2%
A25English, closed, Taimanov variation2412.5%64.6%
A28English, four knights system35743.4%51.4%
A28English, four knights, 4.e3100837.0%51.8%
A28English, four knights, Capablanca variation46436.2%53.9%
A28English, four knights, Marini variation83339.3%51.1%
A28English, four knights, Nimzovich variation54933.2%54.6%
A28English, four knights, Romanishin variation45550.1%52.3%
A28English, four knights, Stean variation8342.2%59.6%
A29English, four knights, kingside fianchetto616540.8%51.9%
A30English, symmetrical variation307539.8%54.8%
A32English, symmetrical variation40543.2%57.9%
A33English, symmetrical variation156347.1%54.3%
A34English, symmetrical variation105439.7%54.6%
A35English, symmetrical variation23835.7%51.5%
A36English, symmetrical variation11735.9%53.8%
A37English, symmetrical variation99641.1%50.5%
A38English, symmetrical variation52645.1%55.2%
A31English, symmetrical, Benoni formation99140.5%56.1%
A36English, symmetrical, Botvinnik system15935.8%51.3%
A36English, symmetrical, Botvinnik system reversed8341.0%54.2%
A37English, symmetrical, Botvinnik system reversed74937.7%50.9%
A33English, symmetrical, Geller variation62838.5%53.8%
A34English, symmetrical, Rubinstein system38738.2%52.5%
A35English, symmetrical, four knights system209543.6%53.5%
A30English, symmetrical, hedgehog system263346.8%55.7%
A30English, symmetrical, hedgehog, flexible formation17643.2%54.5%
A38English, symmetrical, main line with b31100.0%50.0%
A38English, symmetrical, main line with d315446.8%53.2%
A39English, symmetrical, main line with d443541.4%57.0%
A34English, symmetrical, three knights system123643.2%54.4%
A27English, three knights system64235.8%53.3%
A36English, ultra-symmetrical variation135338.1%52.8%
C51Evans counter-gambit650.0%58.3%
C51Evans gambit450.0%75.0%
C52Evans gambit30538.4%46.4%
C51Evans gambit declined3023.3%58.3%
C51Evans gambit declined, 5.a417242.4%46.2%
C51Evans gambit declined, Lange variation20.0%0.0%
C51Evans gambit declined, Showalter variation3447.1%52.9%
C51Evans gambit, 5...Be74436.4%59.1%
C52Evans gambit, Alapin-Steinitz variation250.0%25.0%
C51Evans gambit, Cordel variation8749.4%46.6%
C51Evans gambit, Fraser attack20.0%100.0%
C51Evans gambit, Goering attack10.0%100.0%
C52Evans gambit, Lasker defence825.0%25.0%
C52Evans gambit, Leonhardt variation450.0%50.0%
C52Evans gambit, Levenfish variation616.7%25.0%
C51Evans gambit, Morphy attack2142.9%54.8%
C51Evans gambit, Paulsen variation1827.8%69.4%
C52Evans gambit, Richardson attack1936.8%28.9%
C52Evans gambit, Sanders-Alapin variation20.0%100.0%
C51Evans gambit, Stone-Ware variation21033.8%49.8%
C52Evans gambit, Tartakower attack7245.8%43.8%
C52Evans gambit, Waller attack60.0%100.0%
C52Evans gambit, compromised defence4420.5%73.9%
C52Evans gambit, compromised defence, Paulsen variation1625.0%62.5%
C51Evans gambit, normal variation2020.0%50.0%
C49Four knights6852.9%48.5%
C46Four knights game61944.1%50.2%
C48Four knights, Bardeleben variation850.0%50.0%
C47Four knights, Belgrade gambit10946.8%54.6%
C49Four knights, Gunsberg counter-attack1100.0%50.0%
C46Four knights, Gunsberg variation9946.5%50.5%
C46Four knights, Italian variation17642.0%47.2%
C49Four knights, Janowski variation1540.0%60.0%
C48Four knights, Marshall variation616.7%41.7%
C49Four knights, Nimzovich (Paulsen) variation5457.4%58.3%
C48Four knights, Ranken variation1952.6%63.2%
C48Four knights, Rubinstein counter-gambit107139.7%52.5%
C48Four knights, Rubinstein counter-gambit, 5.Be22100.0%50.0%
C48Four knights, Rubinstein counter-gambit, Bogolyubov variation1752.9%44.1%
C48Four knights, Rubinstein counter-gambit, Henneberger variation6543.1%52.3%
C48Four knights, Rubinstein counter-gambit, exchange variation14965.8%52.3%
C46Four knights, Schultze-Mueller gambit30.0%33.3%
C47Four knights, Scotch variation1520.0%56.7%
C47Four knights, Scotch, 4...exd447649.2%53.8%
C47Four knights, Scotch, Krause variation3537.1%64.3%
C48Four knights, Spanish variation24250.4%56.6%
C48Four knights, Spanish, classical defence18645.2%50.0%
C48Four knights, Spielmann variation475.0%37.5%
C49Four knights, Svenonius variation366.7%66.7%
C49Four knights, double Ruy Lopez8846.6%61.9%
C49Four knights, symmetrical variation19742.6%55.3%
C49Four knights, symmetrical, Blake variation475.0%62.5%
C49Four knights, symmetrical, Capablanca variation2259.1%61.4%
C49Four knights, symmetrical, Maroczy system5745.6%50.9%
C49Four knights, symmetrical, Metger unpin33336.0%51.1%
C49Four knights, symmetrical, Pillsbury variation4856.3%44.8%
C49Four knights, symmetrical, Tarrasch variation1650.0%50.0%
B00Fred20.0%100.0%
C00French defence58334.8%57.2%
C11French defence16239.5%56.2%
C00French defence, Steiner variation76843.2%51.4%
C00French, Alapin variation650.0%75.0%
C13French, Albin-Alekhine-Chatard attack27530.2%55.1%
C13French, Albin-Alekhine-Chatard attack, Breyer variation8638.4%63.4%
C13French, Albin-Alekhine-Chatard attack, Maroczy variation1625.0%68.8%
C13French, Albin-Alekhine-Chatard attack, Spielmann variation6139.3%67.2%
C13French, Albin-Alekhine-Chatard attack, Teichmann variation250.0%75.0%
C11French, Burn variation515444.1%53.0%
C00French, Chigorin variation86732.5%50.2%
C10French, Fort Knox variation60340.1%57.2%
C10French, Frere (Becker) variation2540.0%60.0%
C11French, Henneberger variation1338.5%50.0%
C00French, King's Indian attack220337.3%51.4%
C00French, Labourdonnais variation23031.3%45.2%
C12French, MacCutcheon variation12540.8%49.2%
C12French, MacCutcheon, Bernstein variation2123.8%59.5%
C12French, MacCutcheon, Bogolyubov variation1100.0%50.0%
C12French, MacCutcheon, Chigorin variation6338.1%47.6%
C12French, MacCutcheon, Dr. Olland (Dutch) variation8433.3%60.7%
C12French, MacCutcheon, Duras variation425.0%62.5%
C12French, MacCutcheon, Grigoriev variation2650.0%55.8%
C12French, MacCutcheon, Janowski variation13937.4%57.6%
C12French, MacCutcheon, Lasker variation20527.8%59.3%
C12French, MacCutcheon, Lasker variation, 8...g637835.7%59.4%
C12French, MacCutcheon, Tartakower variation20.0%100.0%
C12French, MacCutcheon, advance variation1526.7%20.0%
C10French, Marshall variation250.0%25.0%
C10French, Paulsen variation70132.8%59.1%
C00French, Pelikan variation6636.4%53.0%
C00French, Reti (Spielmann) variation17839.3%50.6%
C00French, Reversed Philidor formation1233.3%58.3%
C10French, Rubinstein variation226848.5%55.3%
C10French, Rubinstein, Capablanca line771.4%50.0%
C00French, Schlechter variation17842.1%49.2%
C00French, Steinitz attack911.1%27.8%
C11French, Steinitz variation100538.1%54.7%
C11French, Steinitz, Boleslavsky variation342735.6%57.3%
C11French, Steinitz, Bradford attack1100.0%50.0%
C11French, Steinitz, Gledhill attack11833.1%54.7%
C11French, Swiss variation4650.0%55.4%
C03French, Tarrasch220744.3%56.9%
C05French, Tarrasch, Botvinnik variation5733.3%64.0%
C07French, Tarrasch, Eliskases variation12846.1%53.5%
C04French, Tarrasch, Guimard main line35030.0%59.6%
C03French, Tarrasch, Guimard variation7030.0%65.0%
C06French, Tarrasch, Leningrad variation1717.6%85.3%
C05French, Tarrasch, closed variation113031.4%60.5%
C06French, Tarrasch, closed variation, main line100637.5%59.8%
C07French, Tarrasch, open variation362047.5%53.6%
C09French, Tarrasch, open variation, main line108349.5%56.8%
C08French, Tarrasch, open, 4.ed ed129749.8%54.5%
C00French, Two knights variation24738.1%51.8%
C15French, Winawer (Nimzovich) variation79542.4%55.4%
C15French, Winawer, Alekhine (Maroczy) gambit18738.5%55.1%
C15French, Winawer, Alekhine gambit425.0%37.5%
C15French, Winawer, Alekhine gambit, Kan variation5046.0%47.0%
C15French, Winawer, Kondratiyev variation1100.0%50.0%
C16French, Winawer, Petrosian variation21232.1%56.1%
C16French, Winawer, advance variation81034.3%57.4%
C17French, Winawer, advance variation5641.1%59.8%
C18French, Winawer, advance variation48726.1%63.1%
C17French, Winawer, advance, 5.a339032.8%63.3%
C19French, Winawer, advance, 6...Ne735136.8%57.4%
C17French, Winawer, advance, Bogolyubov variation35739.8%51.0%
C17French, Winawer, advance, Rauzer variation1421.4%67.9%
C17French, Winawer, advance, Russian variation5538.2%53.6%
C19French, Winawer, advance, Smyslov variation15525.8%61.3%
C19French, Winawer, advance, poisoned pawn variation257333.4%61.1%
C19French, Winawer, advance, poisoned pawn, Euwe-Gligoric variation30.0%33.3%
C19French, Winawer, advance, poisoned pawn, Konstantinopolsky variation66331.2%62.4%
C19French, Winawer, advance, positional main line105931.0%57.6%
C18French, Winawer, classical variation33533.1%58.1%
C15French, Winawer, fingerslip variation3438.2%33.8%
C00French, Wing gambit4242.9%59.5%
C02French, advance variation120932.5%56.0%
C02French, advance, Euwe variation135036.1%54.0%
C02French, advance, Milner-Barry gambit10034.0%47.0%
C02French, advance, Nimzovich system9831.6%45.4%
C02French, advance, Nimzovich variation1136.4%45.5%
C02French, advance, Paulsen attack178233.6%54.7%
C02French, advance, Steinitz variation38234.0%54.7%
C02French, advance, Wade variation34339.4%57.3%
C13French, classical2842.9%42.9%
C14French, classical variation616.7%41.7%
C14French, classical, Alapin variation9245.7%55.4%
C13French, classical, Anderssen variation1330.8%38.5%
C13French, classical, Anderssen-Richter variation1030.0%55.0%
C13French, classical, Frankfurt variation837.5%81.3%
C14French, classical, Pollock variation1136.4%45.5%
C14French, classical, Rubinstein variation3735.1%58.1%
C14French, classical, Stahlberg variation650.0%58.3%
C14French, classical, Steinitz variation74235.4%58.2%
C14French, classical, Tarrasch variation1216.7%50.0%
C13French, classical, Tartakower variation2437.5%47.9%
C13French, classical, Vistaneckis (Nimzovich) variation90.0%66.7%
C01French, exchange variation147044.7%53.5%
C01French, exchange, Bogolyubov variation333.3%50.0%
C01French, exchange, Svenonius variation3938.5%57.7%
C50Giuoco Pianissimo175738.3%53.2%
C50Giuoco Pianissimo, Canal variation18843.1%52.9%
C50Giuoco Pianissimo, Italian four knights variation40837.5%51.3%
C50Giuoco Piano79638.6%52.4%
C53Giuoco Piano211438.1%52.6%
C54Giuoco Piano18053.3%52.8%
C53Giuoco Piano, Anderssen variation2060.0%40.0%
C53Giuoco Piano, Bird's attack15429.9%49.4%
C53Giuoco Piano, LaBourdonnais variation2152.4%50.0%
C53Giuoco Piano, Mestel variation333.3%83.3%
C54Giuoco Piano, Moeller (Therkatz) attack3745.9%47.3%
C54Giuoco Piano, Moeller, bayonet attack10.0%100.0%
C54Giuoco Piano, Therkatz-Herzog variation10.0%0.0%
C53Giuoco Piano, centre-holding variation5036.0%62.0%
C53Giuoco Piano, close variation4639.1%58.7%
C50Giuoco Piano, four knights variation6336.5%53.2%
C55Giuoco piano20.0%50.0%
A00Global opening425.0%62.5%
C40Greco defence1030.0%45.0%
A00Grob's attack18643.5%34.7%
A00Grob, Fritz gambit5143.1%27.5%
A00Grob, Romford counter-gambit425.0%62.5%
A00Grob, spike attack633.3%33.3%
D80Gruenfeld defence88447.6%54.6%
D99Gruenfeld defence, Smyslov, Yugoslav variation1330.8%46.2%
D99Gruenfeld defence, Smyslov, main line17041.2%58.2%
D93Gruenfeld with Bf4 e328250.0%52.3%
D94Gruenfeld with e3 Bd32138.1%52.4%
D95Gruenfeld with e3 & Qb31844.4%61.1%
D82Gruenfeld, 4.Bf454345.5%53.1%
D92Gruenfeld, 5.Bf468144.6%56.7%
D91Gruenfeld, 5.Bg590639.6%48.2%
D94Gruenfeld, 5.e342544.5%57.5%
D95Gruenfeld, Botvinnik variation7544.0%51.3%
D94Gruenfeld, Flohr defence2050.0%60.0%
D90Gruenfeld, Flohr variation29937.8%56.0%
D83Gruenfeld, Gruenfeld gambit2748.1%61.1%
D84Gruenfeld, Gruenfeld gambit accepted6250.0%55.6%
D83Gruenfeld, Gruenfeld gambit, Botvinnik variation1573.3%63.3%
D83Gruenfeld, Gruenfeld gambit, Capablanca variation26642.9%57.5%
D80Gruenfeld, Lundin variation10.0%0.0%
D94Gruenfeld, Makogonov variation9246.7%47.3%
D94Gruenfeld, Opovcensky variation15842.4%54.1%
D81Gruenfeld, Russian variation40443.6%61.6%
D96Gruenfeld, Russian variation24842.7%54.8%
D97Gruenfeld, Russian variation with e43732.4%62.2%
D97Gruenfeld, Russian, Alekhine (Hungarian) variation167944.3%51.1%
D97Gruenfeld, Russian, Byrne (Simagin) variation12437.9%59.3%
D98Gruenfeld, Russian, Keres variation1540.0%46.7%
D97Gruenfeld, Russian, Levenfish variation1225.0%70.8%
D97Gruenfeld, Russian, Prins variation44943.7%57.0%
D98Gruenfeld, Russian, Smyslov variation25741.2%60.3%
D97Gruenfeld, Russian, Szabo (Boleslavsky) variation22843.0%58.8%
D90Gruenfeld, Schlechter variation2532.0%40.0%
D94Gruenfeld, Smyslov defence16146.0%57.8%
D88Gruenfeld, Spassky variation, main line, 10...cd, 11.cd20841.8%60.8%
D89Gruenfeld, Spassky variation, main line, 13.Bd37038.6%49.3%
D80Gruenfeld, Stockholm variation70143.7%54.4%
D90Gruenfeld, Three knights variation59349.7%54.2%
D85Gruenfeld, exchange variation297747.8%56.4%
D86Gruenfeld, exchange, Larsen variation30.0%66.7%
D87Gruenfeld, exchange, Seville variation7754.5%62.3%
D86Gruenfeld, exchange, Simagin's improved variation12339.8%52.4%
D86Gruenfeld, exchange, Simagin's lesser variation5541.8%59.1%
D89Gruenfeld, exchange, Sokolsky variation850.0%37.5%
D87Gruenfeld, exchange, Spassky variation53141.8%55.6%
D86Gruenfeld, exchange, classical variation107845.7%55.6%
D85Gruenfeld, modern exchange variation319446.6%55.8%
C40Gunderam defence7929.1%67.7%
C21Halasz gambit825.0%37.5%
A43Hawk (Habichd) defence366.7%33.3%
C50Hungarian defence17740.1%50.0%
C44Inverted Hanham2832.1%41.1%
C44Inverted Hungarian2245.5%59.1%
C36KGA, Abbazia defence (classical defence, modern defence[!])5238.5%67.3%
C36KGA, Abbazia defence, modern variation26842.2%45.0%
C39KGA, Allgaier, Thorold variation10.0%0.0%
C39KGA, Allgaier, Walker attack10.0%0.0%
C34KGA, Becker defence3342.4%45.5%
C37KGA, Blachly gambit2835.7%28.6%
C34KGA, Bonsch-Osmolovsky variation4045.0%55.0%
C33KGA, Breyer gambit333.3%50.0%
C33KGA, Carrera (Basman) gambit10.0%100.0%
C37KGA, Cochrane gambit333.3%50.0%
C35KGA, Cunningham defence6835.3%50.0%
C35KGA, Cunningham, Euwe defence2227.3%54.5%
C34KGA, Fischer defence14230.3%46.1%
C34KGA, Gianutio counter-gambit2100.0%50.0%
C38KGA, Hanstein gambit837.5%43.8%
C33KGA, Keres (Mason-Steinitz) gambit1656.3%34.4%
C39KGA, Kieseritsky, Berlin defence6237.1%42.7%
C39KGA, Kieseritsky, Berlin defence, 6.Bc44334.9%36.0%
C39KGA, Kieseritsky, Brentano (Campbell) defence10.0%100.0%
C39KGA, Kieseritsky, Brentano defence10.0%100.0%
C39KGA, Kieseritsky, Brentano defence, Caro variation2100.0%50.0%
C39KGA, Kieseritsky, Kolisch defence8145.7%45.1%
C39KGA, Kieseritsky, Neumann defence1353.8%65.4%
C39KGA, Kieseritsky, Paulsen defence825.0%37.5%
C39KGA, Kieseritsky, Rice gambit1723.5%29.4%
C39KGA, Kieseritsky, Salvio (Rosenthal) defence5547.3%38.2%
C39KGA, Kieseritsky, long whip (Stockwhip, classical) defence633.3%33.3%
C37KGA, King's knight's gambit1861.1%63.9%
C33KGA, Lesser bishop's (Petroff-Jaenisch-Tartakower) gambit333.3%50.0%
C37KGA, Muzio gambit944.4%33.3%
C37KGA, Muzio gambit, Brentano defence425.0%62.5%
C37KGA, Muzio gambit, From defence1100.0%50.0%
C38KGA, Philidor gambit1612.5%31.3%
C37KGA, Quaade gambit933.3%27.8%
C37KGA, Rosentreter gambit1250.0%33.3%
C37KGA, Salvio gambit250.0%75.0%
C37KGA, Salvio gambit, Anderssen counter-attack50.0%60.0%
C34KGA, Schallop defence3933.3%62.8%
C37KGA, Silberschmidt gambit333.3%50.0%
C33KGA, bishop's gambit9034.4%52.8%
C33KGA, bishop's gambit, Anderssen variation450.0%50.0%
C33KGA, bishop's gambit, Bledow variation5226.9%30.8%
C33KGA, bishop's gambit, Boden defence450.0%25.0%
C33KGA, bishop's gambit, Bogolyubov variation2437.5%43.8%
C33KGA, bishop's gambit, Cozio (Morphy) defence922.2%44.4%
C33KGA, bishop's gambit, Gifford variation333.3%50.0%
C33KGA, bishop's gambit, Jaenisch variation11341.6%48.2%
C33KGA, bishop's gambit, Lopez-Gianutio counter-gambit425.0%62.5%
C33KGA, bishop's gambit, Maurian defence1931.6%52.6%
C33KGA, bishop's gambit, Morphy variation2536.0%54.0%
C33KGA, bishop's gambit, Paulsen attack666.7%50.0%
C33KGA, bishop's gambit, Ruy Lopez defence1650.0%50.0%
C33KGA, bishop's gambit, Steinitz defence2944.8%50.0%
C33KGA, bishop's gambit, classical defence30.0%33.3%
C30KGD, 2...Nf63426.5%66.2%
C31KGD, Falkbeer counter-gambit5848.3%53.4%
C31KGD, Falkbeer, 3...e4862.5%56.3%
C31KGD, Falkbeer, 4.d32055.0%62.5%
C32KGD, Falkbeer, 5.de1241.7%37.5%
C32KGD, Falkbeer, Charousek gambit2100.0%50.0%
C32KGD, Falkbeer, Keres variation333.3%83.3%
C31KGD, Falkbeer, Milner-Barry variation20.0%50.0%
C31KGD, Falkbeer, Morphy gambit10.0%100.0%
C31KGD, Falkbeer, Nimzovich variation560.0%70.0%
C32KGD, Falkbeer, Reti variation450.0%50.0%
C31KGD, Falkbeer, Rubinstein variation520.0%70.0%
C31KGD, Falkbeer, Tartakower variation1656.3%40.6%
C32KGD, Falkbeer, main line, 7...Bf5616.7%91.7%
C30KGD, Keene's defence2142.9%69.0%
C30KGD, Mafia defence837.5%68.8%
C31KGD, Nimzovich counter-gambit6334.9%50.8%
C30KGD, Norwalde variation2015.0%77.5%
C30KGD, classical counter-gambit10.0%0.0%
C30KGD, classical variation7728.6%53.2%
C30KGD, classical, 4.c36532.3%65.4%
C30KGD, classical, Heath variation20.0%50.0%
C30KGD, classical, Marshall attack5100.0%50.0%
C30KGD, classical, Reti variation1100.0%50.0%
C30KGD, classical, Soldatenkov variation10.0%0.0%
C30KGD, classical, Svenonius variation1100.0%50.0%
B00KP, Colorado counter425.0%62.5%
C20KP, Indian opening6637.9%44.7%
C20KP, King's head opening250.0%25.0%
C20KP, Lopez opening1442.9%35.7%
C20KP, Mengarini's opening2040.0%25.0%
C20KP, Napoleon's opening633.3%50.0%
B00KP, Nimzovich defence55532.6%59.2%
B00KP, Nimzovich defence, Bogolyubov variation11629.3%60.3%
B00KP, Nimzovich defence, Marshall gambit20.0%50.0%
C20KP, Patzer opening3627.8%33.3%
A50Kevitz-Trajkovich defence39435.8%56.0%
E60King's Indian defence76335.8%55.8%
E61King's Indian defence, 3.Nc387736.1%55.4%
E72King's Indian with e4 & g35834.5%56.9%
E60King's Indian, 3.Nf3284139.5%57.6%
E60King's Indian, 3.g3165542.4%56.1%
E60King's Indian, 3.g3, counterthrust variation1330.8%30.8%
E70King's Indian, 4.e497133.2%58.3%
E73King's Indian, 5.Be23735.1%58.1%
E90King's Indian, 5.Nf386433.0%57.2%
E91King's Indian, 6.Be260833.7%64.7%
E92King's Indian, Andersson variation29854.4%49.3%
E60King's Indian, Anti-Gruenfeld5431.5%60.2%
E73King's Indian, Averbakh system101833.8%55.2%
E74King's Indian, Averbakh, 6...c527736.8%56.0%
E75King's Indian, Averbakh, main line7623.7%60.5%
E60King's Indian, Danube gambit666.7%66.7%
A48King's Indian, East Indian defence86638.0%51.8%
E76King's Indian, Four pawns attack22838.2%59.4%
E77King's Indian, Four pawns attack11431.6%57.9%
E77King's Indian, Four pawns attack, 6.Be22356.5%54.3%
E77King's Indian, Four pawns attack, Florentine gambit650.0%41.7%
E76King's Indian, Four pawns attack, dynamic line17238.4%52.3%
E79King's Indian, Four pawns attack, main line1442.9%57.1%
E78King's Indian, Four pawns attack, with Be2 and Nf32147.6%57.1%
E92King's Indian, Gligoric-Taimanov system148934.3%58.5%
E91King's Indian, Kazakh variation30036.7%56.0%
E70King's Indian, Kramer system35832.4%58.1%
E90King's Indian, Larsen variation9238.0%61.4%
A48King's Indian, London system111938.4%53.9%
E71King's Indian, Makagonov system (5.h3)75835.0%59.6%
E92King's Indian, Petrosian system11228.6%51.8%
E92King's Indian, Petrosian system, Stein variation59533.1%54.0%
E93King's Indian, Petrosian system, main line8535.3%50.6%
E72King's Indian, Pomar system1844.4%50.0%
E80King's Indian, Saemisch variation36633.6%58.9%
E81King's Indian, Saemisch, 5...O-O214633.9%55.4%
E83King's Indian, Saemisch, 6...Nc67927.8%43.0%
E81King's Indian, Saemisch, Byrne variation7939.2%53.8%
E83King's Indian, Saemisch, Panno formation22741.0%57.0%
E84King's Indian, Saemisch, Panno main line43037.9%52.7%
E83King's Indian, Saemisch, Ruban variation1136.4%45.5%
E82King's Indian, Saemisch, double fianchetto variation11034.5%57.3%
E89King's Indian, Saemisch, orthodox main line3033.3%60.0%
E85King's Indian, Saemisch, orthodox variation7037.1%52.9%
E86King's Indian, Saemisch, orthodox, 7.Nge2 c638029.5%54.5%
E87King's Indian, Saemisch, orthodox, 7.d528126.7%57.8%
E88King's Indian, Saemisch, orthodox, 7.d5 c632831.7%57.6%
E87King's Indian, Saemisch, orthodox, Bronstein variation1100.0%50.0%
E73King's Indian, Semi-Averbakh system5942.4%55.1%
E61King's Indian, Smyslov system8737.9%54.6%
A48King's Indian, Torre attack163839.1%49.7%
E90King's Indian, Zinnowitz variation4045.0%57.5%
E70King's Indian, accelerated Averbakh system12334.1%56.1%
E92King's Indian, classical variation2934.5%41.4%
E62King's Indian, fianchetto variation6934.8%52.2%
E62King's Indian, fianchetto with ...Nc623833.2%54.8%
E67King's Indian, fianchetto with ...Nd710136.6%56.9%
A49King's Indian, fianchetto without c4118639.7%57.0%
E62King's Indian, fianchetto, Kavalek (Bronstein) variation56633.0%60.5%
E62King's Indian, fianchetto, Larsen system29040.7%62.4%
E63King's Indian, fianchetto, Panno variation217337.8%57.1%
E62King's Indian, fianchetto, Simagin variation8435.7%64.3%
E62King's Indian, fianchetto, Uhlmann (Szabo) variation29333.4%58.4%
E66King's Indian, fianchetto, Yugoslav Panno31834.6%56.9%
E64King's Indian, fianchetto, Yugoslav system10137.6%60.4%
E65King's Indian, fianchetto, Yugoslav, 7.O-O18452.7%52.4%
E69King's Indian, fianchetto, classical main line44533.5%62.1%
E67King's Indian, fianchetto, classical variation51941.0%55.6%
E68King's Indian, fianchetto, classical variation, 8.e4125838.7%59.7%
E62King's Indian, fianchetto, lesser Simagin (Spassky) variation30636.3%61.3%
E94King's Indian, orthodox variation100937.3%54.0%
E94King's Indian, orthodox, 7...Nbd792134.4%59.7%
E95King's Indian, orthodox, 7...Nbd7, 8.Re135135.6%56.0%
E96King's Indian, orthodox, 7...Nbd7, main line4738.3%59.6%
E97King's Indian, orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation)401033.1%56.0%
E98King's Indian, orthodox, Aronin-Taimanov, 9.Ne186726.4%60.7%
E99King's Indian, orthodox, Aronin-Taimanov, Benko attack6124.6%68.0%
E97King's Indian, orthodox, Aronin-Taimanov, bayonet attack127335.3%58.2%
E99King's Indian, orthodox, Aronin-Taimanov, main line2532.0%60.0%
E94King's Indian, orthodox, Donner variation20035.0%60.0%
C30King's gambit12142.1%60.7%
C33King's gambit accepted333.3%16.7%
C40King's knight opening20.0%50.0%
C34King's knight's gambit1729.4%32.4%
C38King's knight's gambit2339.1%28.3%
C20King's pawn game2634.6%48.1%
C44King's pawn game8537.6%51.8%
C50King's pawn game22435.3%60.0%
B00King's pawn opening154536.7%57.2%
C44Konstantinopolsky opening1250.0%58.3%
A00Lasker simul special333.3%50.0%
C40Latvian counter-gambit8631.4%61.0%
C40Latvian gambit, 3.Bc4966.7%44.4%
C40Latvian, Fraser defence1118.2%54.5%
C40Latvian, Polerio variation2227.3%40.9%
B00Lemming defence837.5%56.3%
C00Lengfellner system922.2%77.8%
D00Levitsky attack (Queen's bishop attack)196636.7%52.0%
A00Mieses opening16732.3%50.9%
A40Modern defence100037.3%57.0%
A41Modern defence8531.8%58.2%
A42Modern defence, Averbakh system43832.9%58.7%
A42Modern defence, Averbakh system, Kotov variation11924.4%66.0%
A42Modern defence, Averbakh system, Randspringer variation119.1%77.3%
A03Mujannah opening450.0%25.0%
D70Neo-Gruenfeld (Kemeri) defence6443.8%53.1%
D70Neo-Gruenfeld defence21639.4%55.3%
D73Neo-Gruenfeld, 5.Nf382550.9%55.2%
D71Neo-Gruenfeld, 5.cd30147.5%56.6%
D72Neo-Gruenfeld, 5.cd, main line19533.8%60.5%
D77Neo-Gruenfeld, 6.O-O69846.6%54.2%
D78Neo-Gruenfeld, 6.O-O c677742.0%54.7%
D79Neo-Gruenfeld, 6.O-O, main line51548.2%54.4%
D74Neo-Gruenfeld, 6.cd Nxd5, 7.O-O22143.9%56.8%
D76Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb653843.7%57.5%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc310951.4%58.7%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.dc1735.3%70.6%
E00Neo-Indian (Seirawan) attack18031.7%51.4%
E20Nimzo-Indian defence15450.0%52.9%
E40Nimzo-Indian, 4.e314230.3%58.8%
E46Nimzo-Indian, 4.e3 O-O7334.2%56.8%
E47Nimzo-Indian, 4.e3 O-O, 5.Bd358746.8%52.0%
E48Nimzo-Indian, 4.e3 O-O, 5.Bd3 d549642.7%49.2%
E41Nimzo-Indian, 4.e3 c574745.0%54.6%
E42Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein)64845.7%54.2%
E51Nimzo-Indian, 4.e3 e8g8, 5.Nf3 d7d516151.6%50.0%
E50Nimzo-Indian, 4.e3 e8g8, 5.Nf3, without ...d519142.4%51.0%
E49Nimzo-Indian, 4.e3, Botvinnik system20444.6%56.6%
E45Nimzo-Indian, 4.e3, Bronstein (Byrne) variation22349.8%56.3%
E53Nimzo-Indian, 4.e3, Gligoric system with 7...Nbd76855.9%51.5%
E54Nimzo-Indian, 4.e3, Gligoric system with 7...dc122648.7%55.8%
E55Nimzo-Indian, 4.e3, Gligoric system, Bronstein variation187548.2%55.7%
E54Nimzo-Indian, 4.e3, Gligoric system, Smyslov variation2564.0%68.0%
E53Nimzo-Indian, 4.e3, Keres variation10436.5%47.1%
E51Nimzo-Indian, 4.e3, Ragozin variation2339.1%67.4%
E40Nimzo-Indian, 4.e3, Taimanov variation9736.1%63.4%
E59Nimzo-Indian, 4.e3, main line74443.4%53.4%
E52Nimzo-Indian, 4.e3, main line with ...b646940.1%53.5%
E53Nimzo-Indian, 4.e3, main line with ...c539740.6%54.3%
E56Nimzo-Indian, 4.e3, main line with 7...Nc635151.0%56.0%
E58Nimzo-Indian, 4.e3, main line with 8...Bxc3145844.7%52.9%
E57Nimzo-Indian, 4.e3, main line with 8...dc and 9...cd333.3%16.7%
E43Nimzo-Indian, Fischer variation58936.5%54.1%
E44Nimzo-Indian, Fischer variation, 5.Ne242137.8%55.5%
E20Nimzo-Indian, Kmoch variation76938.5%53.8%
E30Nimzo-Indian, Leningrad variation63436.6%48.3%
E30Nimzo-Indian, Leningrad, ...b5 gambit7432.4%47.3%
E31Nimzo-Indian, Leningrad, main line23131.6%51.3%
E20Nimzo-Indian, Mikenas attack666.7%50.0%
E46Nimzo-Indian, Reshevsky variation94444.4%51.5%
E20Nimzo-Indian, Romanishin-Kasparov (Steiner) system44145.1%54.1%
E24Nimzo-Indian, Saemisch variation18348.1%48.6%
E25Nimzo-Indian, Saemisch variation14642.5%52.1%
E26Nimzo-Indian, Saemisch variation8640.7%57.6%
E27Nimzo-Indian, Saemisch variation5347.2%44.3%
E28Nimzo-Indian, Saemisch variation12930.2%53.9%
E24Nimzo-Indian, Saemisch, Botvinnik variation4835.4%40.6%
E29Nimzo-Indian, Saemisch, Capablanca variation2839.3%41.1%
E25Nimzo-Indian, Saemisch, Keres variation29346.1%54.1%
E26Nimzo-Indian, Saemisch, O'Kelly variation2941.4%51.7%
E25Nimzo-Indian, Saemisch, Romanovsky variation10050.0%51.0%
E29Nimzo-Indian, Saemisch, main line8638.4%56.4%
E46Nimzo-Indian, Simagin variation14341.3%50.0%
E22Nimzo-Indian, Spielmann variation14545.5%51.7%
E23Nimzo-Indian, Spielmann, 4...c5, 5.dc Nc64740.4%52.1%
E23Nimzo-Indian, Spielmann, Karlsbad variation1735.3%41.2%
E23Nimzo-Indian, Spielmann, San Remo variation757.1%71.4%
E23Nimzo-Indian, Spielmann, Staahlberg variation20.0%100.0%
E32Nimzo-Indian, classical variation638442.3%53.7%
E33Nimzo-Indian, classical, 4...Nc610347.6%59.7%
E38Nimzo-Indian, classical, 4...c560837.7%60.1%
E32Nimzo-Indian, classical, Adorjan gambit10343.7%51.0%
E36Nimzo-Indian, classical, Botvinnik variation1241.7%62.5%
E33Nimzo-Indian, classical, Milner-Barry (Zurich) variation31341.2%58.9%
E34Nimzo-Indian, classical, Noa variation78852.8%53.8%
E36Nimzo-Indian, classical, Noa variation, 5.a329643.9%53.0%
E35Nimzo-Indian, classical, Noa variation, 5.cd ed56846.7%50.4%
E37Nimzo-Indian, classical, Noa variation, main line, 7.Qc237246.0%62.5%
E39Nimzo-Indian, classical, Pirc variation96139.6%55.1%
E37Nimzo-Indian, classical, San Remo variation50.0%60.0%
E41Nimzo-Indian, e3, Huebner variation48533.2%51.9%
E21Nimzo-Indian, three knights variation248141.2%54.3%
E21Nimzo-Indian, three knights, Euwe variation475.0%62.5%
E21Nimzo-Indian, three knights, Korchnoi variation40.0%50.0%
A01Nimzovich-Larsen attack71136.8%53.3%
A01Nimzovich-Larsen attack, Dutch variation1526.7%46.7%
A01Nimzovich-Larsen attack, English variation25933.6%51.5%
A01Nimzovich-Larsen attack, Indian variation30934.6%48.7%
A01Nimzovich-Larsen attack, Polish variation425.0%62.5%
A01Nimzovich-Larsen attack, classical variation123435.8%49.4%
A01Nimzovich-Larsen attack, modern variation318540.1%50.7%
A01Nimzovich-Larsen attack, symmetrical variation70141.8%49.6%
B06Norwegian defence250.0%25.0%
A00Novosibirsk opening2133.3%50.0%
A43Old Benoni defence155335.1%58.2%
A44Old Benoni defence2638.5%61.5%
A43Old Benoni, Franco-Benoni defence12339.8%58.9%
A43Old Benoni, Mujannah formation3740.5%66.2%
A43Old Benoni, Schmid's system2520.0%58.0%
A41Old Indian defence85032.1%54.6%
A53Old Indian defence102839.1%56.8%
A54Old Indian, Dus-Khotimirsky variation1020.0%40.0%
A53Old Indian, Janowski variation15034.0%55.7%
A41Old Indian, Tartakower (Wade) variation101134.5%61.1%
A54Old Indian, Ukrainian variation11845.8%57.6%
A54Old Indian, Ukrainian variation, 4.Nf323037.0%57.2%
A55Old Indian, main line43038.1%58.4%
B00Owen defence30034.0%61.7%
A45Paleface attack3435.3%47.1%
C42Petrov three knights game26538.1%57.2%
C42Petrov's defence28643.0%53.3%
C42Petrov, Cochrane gambit6518.5%32.3%
C42Petrov, Cozio (Lasker) attack50548.7%52.7%
C42Petrov, Damiano variation2441.7%50.0%
C42Petrov, French attack966.7%66.7%
C42Petrov, Italian variation6327.0%50.0%
C42Petrov, Kaufmann attack19948.7%50.5%
C42Petrov, Nimzovich attack114945.2%55.0%
C42Petrov, Paulsen attack15740.8%52.2%
C43Petrov, Urusov gambit633.3%83.3%
C42Petrov, classical attack78947.4%56.8%
C42Petrov, classical attack, Berger variation1275.0%54.2%
C42Petrov, classical attack, Chigorin variation57541.0%57.0%
C42Petrov, classical attack, Jaenisch variation166445.6%58.3%
C42Petrov, classical attack, Krause variation944.4%33.3%
C42Petrov, classical attack, Marshall variation96743.4%57.1%
C42Petrov, classical attack, Mason variation11842.4%57.6%
C42Petrov, classical attack, Tarrasch variation250.0%75.0%
C42Petrov, classical attack, close variation14246.5%59.2%
C43Petrov, modern (Steinitz) attack3545.7%60.0%
C43Petrov, modern attack, Bardeleben variation425.0%62.5%
C43Petrov, modern attack, Steinitz variation1100.0%50.0%
C43Petrov, modern attack, Symmetrical variation244745.0%53.2%
C43Petrov, modern attack, Trifunovic variation5545.5%48.2%
C43Petrov, modern attack, main line20047.0%58.5%
C41Philidor's defence26736.7%60.3%
C41Philidor, Hanham variation3935.9%61.5%
C41Philidor, Hanham, Delmar variation450.0%75.0%
C41Philidor, Hanham, Krause variation1457.1%42.9%
C41Philidor, Hanham, Schlechter variation2128.6%71.4%
C41Philidor, Hanham, Steiner variation2138.1%66.7%
C41Philidor, Improved Hanham variation102038.6%57.0%
C41Philidor, Larsen variation3622.2%69.4%
C41Philidor, Lopez counter-gambit20.0%50.0%
C41Philidor, Nimzovich (Jaenisch) variation2040.0%45.0%
C41Philidor, Nimzovich variation4946.9%56.1%
C41Philidor, Nimzovich, Klein variation785.7%57.1%
C41Philidor, Nimzovich, Larobok variation5747.4%34.2%
C41Philidor, Nimzovich, Rellstab variation3641.7%65.3%
C41Philidor, Nimzovich, Sokolsky variation862.5%68.8%
C41Philidor, Nimzovich, Sozin variation742.9%50.0%
C41Philidor, Paulsen attack250.0%25.0%
C41Philidor, Philidor counter-gambit1421.4%67.9%
C41Philidor, Philidor counter-gambit, Zukertort variation862.5%68.8%
C41Philidor, Philidor counter-gambit, del Rio attack30.0%66.7%
C41Philidor, Steinitz variation20.0%0.0%
C41Philidor, exchange variation75537.7%58.9%
B07Pirc defence175036.9%55.7%
B07Pirc, 150 attack24037.5%60.4%
B09Pirc, Austrian attack18340.4%61.2%
B09Pirc, Austrian attack, 6.Bd3115639.4%59.7%
B09Pirc, Austrian attack, 6.Be331131.8%58.4%
B09Pirc, Austrian attack, 6.e58744.8%56.9%
B09Pirc, Austrian attack, Ljubojevic variation1442.9%50.0%
B09Pirc, Austrian attack, dragon formation77638.8%58.3%
B07Pirc, Byrne variation38432.8%57.3%
B07Pirc, Chinese variation250.0%25.0%
B07Pirc, Holmov system3847.4%60.5%
B07Pirc, Sveshnikov system30435.5%52.6%
B07Pirc, Ufimtsev-Pytel variation40339.2%59.3%
B07Pirc, bayonet (Mariotti) attack3154.8%56.5%
B08Pirc, classical (two knights) system60137.3%58.6%
B08Pirc, classical system, 5.Be2235538.2%57.3%
B08Pirc, classical, h3 system41337.3%58.8%
A00Polish (Sokolsky) opening181939.1%48.9%
A40Polish defence6243.5%55.6%
A00Polish, Outflank variation13943.2%48.9%
C44Ponziani counter-gambit10843.5%57.9%
C44Ponziani counter-gambit, Cordel variation10.0%0.0%
C44Ponziani opening32233.9%45.2%
C44Ponziani, Caro variation22744.9%49.3%
C44Ponziani, Fraser defence5639.3%66.1%
C44Ponziani, Jaenisch counter-attack213145.8%52.7%
C44Ponziani, Leonhardt variation10035.0%48.5%
C44Ponziani, Reti variation2832.1%58.9%
C44Ponziani, Romanishin variation1631.3%46.9%
C44Ponziani, Steinitz variation47141.6%45.9%
A42Pterodactyl defence32036.9%63.8%
D21QGA, 3.Nf328140.9%57.5%
D20QGA, 3.e4295839.7%56.4%
D26QGA, 4...e627045.2%52.6%
D24QGA, 4.Nc320541.0%50.7%
D25QGA, 4.e312739.4%57.5%
D22QGA, Alekhine defence24740.5%54.7%
D22QGA, Alekhine defence, Alatortsev variation1250.0%41.7%
D21QGA, Alekhine defense, Borisenko-Furman variation3026.7%46.7%
D24QGA, Bogolyubov variation15848.1%56.3%
D21QGA, Ericson variation60.0%33.3%
D25QGA, Flohr variation7431.1%66.9%
D22QGA, Haberditz variation12357.7%52.4%
D25QGA, Janowsky-Larsen variation36739.8%57.5%
D20QGA, Linares variation8434.5%62.5%
D23QGA, Mannheim variation32646.6%52.8%
D25QGA, Smyslov variation9553.7%58.4%
D26QGA, classical variation69751.9%53.1%
D26QGA, classical variation, 6.O-O15947.2%58.2%
D27QGA, classical, 6...a6394950.9%55.2%
D28QGA, classical, 7...b520151.7%56.2%
D28QGA, classical, 7.Qe26450.0%60.9%
D29QGA, classical, 8...Bb730941.4%47.9%
D26QGA, classical, Furman variation10.0%0.0%
D27QGA, classical, Geller variation7652.6%53.9%
D27QGA, classical, Rubinstein variation146547.5%56.0%
D29QGA, classical, Smyslov variation4153.7%46.3%
D26QGA, classical, Steinitz variation6056.7%65.0%
D30QGD82847.5%51.9%
D51QGD2365.2%63.0%
D52QGD14641.1%58.9%
D30QGD Slav32442.9%54.2%
D15QGD Slav accepted9642.7%51.6%
D16QGD Slav accepted, Alapin variation17738.4%65.5%
D10QGD Slav defence389341.0%54.1%
D10QGD Slav defence, Alekhine variation26238.9%55.0%
D10QGD Slav defence, exchange variation150444.3%55.5%
D11QGD Slav, 3.Nf3243341.1%55.7%
D15QGD Slav, 4.Nc3400339.6%54.8%
D11QGD Slav, 4.e3425041.8%55.4%
D12QGD Slav, 4.e3 Bf5306340.0%54.4%
D15QGD Slav, 5.e3 (Alekhine variation)16630.7%55.1%
D12QGD Slav, Amsterdam variation2152.4%45.2%
D11QGD Slav, Breyer variation13345.1%59.4%
D17QGD Slav, Carlsbad variation47936.7%60.5%
D17QGD Slav, Czech defence38748.3%54.9%
D18QGD Slav, Dutch variation28140.9%60.3%
D19QGD Slav, Dutch variation133539.2%57.3%
D19QGD Slav, Dutch variation, main line22140.7%56.6%
D18QGD Slav, Dutch, Lasker variation425.0%87.5%
D19QGD Slav, Dutch, Saemisch variation250.0%25.0%
D17QGD Slav, Krause attack71339.1%58.3%
D15QGD Slav, Schlechter variation29143.0%59.3%
D30QGD Slav, Semmering variation2729.6%51.9%
D15QGD Slav, Slav gambit2420.8%56.3%
D16QGD Slav, Smyslov variation7332.9%58.9%
D16QGD Slav, Soultanbeieff variation42549.2%53.5%
D16QGD Slav, Steiner variation22637.2%62.8%
D15QGD Slav, Suechting variation14430.6%59.0%
D15QGD Slav, Tolush-Geller gambit12227.9%41.0%
D17QGD Slav, Wiesbaden variation63542.2%57.0%
D10QGD Slav, Winawer counter-gambit16633.1%55.1%
D12QGD Slav, exchange variation9237.0%50.0%
D13QGD Slav, exchange variation72246.3%55.4%
D14QGD Slav, exchange variation, 6.Bf4 Bf567949.5%51.0%
D14QGD Slav, exchange, Trifunovic variation21149.3%52.6%
D43QGD semi-Slav699441.1%52.8%
D45QGD semi-Slav, 5...Nd754538.3%53.1%
D44QGD semi-Slav, 5.Bg5 dc15346.4%49.3%
D45QGD semi-Slav, 5.e341140.4%56.2%
D46QGD semi-Slav, 6.Bd33938.5%62.8%
D47QGD semi-Slav, 7.Bc46437.5%53.1%
D46QGD semi-Slav, Bogolyubov variation16642.8%56.3%
D44QGD semi-Slav, Botvinnik system (anti-Meran)7737.7%56.5%
D46QGD semi-Slav, Chigorin defence43345.0%53.9%
D44QGD semi-Slav, Ekstrom variation2646.2%38.5%
D43QGD semi-Slav, Hastings variation520.0%90.0%
D48QGD semi-Slav, Meran214.8%40.5%
D47QGD semi-Slav, Meran variation128349.0%54.8%
D48QGD semi-Slav, Meran, 8...a6140449.4%48.9%
D49QGD semi-Slav, Meran, Blumenfeld variation17446.6%51.4%
D48QGD semi-Slav, Meran, Pirc variation955.6%72.2%
D49QGD semi-Slav, Meran, Rabinovich variation6225.8%43.5%
D49QGD semi-Slav, Meran, Rellstab attack1637.5%62.5%
D48QGD semi-Slav, Meran, Reynolds' variation75739.9%56.3%
D49QGD semi-Slav, Meran, Sozin variation15744.6%45.9%
D49QGD semi-Slav, Meran, Stahlberg variation8041.3%45.6%
D47QGD semi-Slav, Meran, Wade variation692239.5%53.6%
D48QGD semi-Slav, Meran, old main line11235.7%52.7%
D46QGD semi-Slav, Romih variation17436.8%63.8%
D45QGD semi-Slav, Rubinstein (anti-Meran) system1533.3%43.3%
D45QGD semi-Slav, Stoltz variation1172543.4%53.2%
D45QGD semi-Slav, accelerated Meran (Alekhine variation)206743.5%53.9%
D44QGD semi-Slav, anti-Meran gambit76634.9%58.2%
D44QGD semi-Slav, anti-Meran, Alatortsev system1100.0%50.0%
D44QGD semi-Slav, anti-Meran, Lilienthal variation16530.3%66.7%
D44QGD semi-Slav, anti-Meran, Szabo variation2420.8%35.4%
D47QGD semi-Slav, neo-Meran (Lundin variation)30347.9%54.6%
D45QGD semi-Slav, stonewall defence1154.5%54.5%
D35QGD, 3...Nf69138.5%48.9%
D31QGD, 3.Nc384841.5%55.1%
D50QGD, 4.Bg59544.2%53.7%
D53QGD, 4.Bg5 Be799045.9%54.6%
D53QGD, 4.Bg5 Be7, 5.e3 O-O4548.9%48.9%
D51QGD, 4.Bg5 Nbd77541.3%54.0%
D37QGD, 4.Nf3554746.4%52.9%
D51QGD, 5...c68556.5%51.8%
D55QGD, 6.Nf313135.9%57.6%
D31QGD, Alapin variation742.9%64.3%
D08QGD, Albin counter-gambit16741.9%57.5%
D09QGD, Albin counter-gambit, 5.g314443.8%56.6%
D08QGD, Albin counter-gambit, Alapin variation3050.0%61.7%
D08QGD, Albin counter-gambit, Balogh variation911.1%83.3%
D08QGD, Albin counter-gambit, Janowski variation650.0%58.3%
D08QGD, Albin counter-gambit, Lasker trap50.0%60.0%
D51QGD, Alekhine variation40.0%50.0%
D54QGD, Anti-neo-orthodox variation5044.0%50.0%
D50QGD, Been-Koomen variation650.0%25.0%
D52QGD, Cambridge Springs defence3842.1%47.4%
D52QGD, Cambridge Springs defence, 7.cd4537.8%54.4%
D52QGD, Cambridge Springs defence, Argentine variation1931.6%42.1%
D52QGD, Cambridge Springs defence, Bogoljubow variation42647.7%56.0%
D52QGD, Cambridge Springs defence, Capablanca variation3636.1%59.7%
D52QGD, Cambridge Springs defence, Rubinstein variation16538.8%54.5%
D52QGD, Cambridge Springs defence, Yugoslav variation41037.6%56.1%
D50QGD, Canal (Venice) variation425.0%62.5%
D51QGD, Capablanca anti-Cambridge Springs variation1861.1%69.4%
D30QGD, Capablanca variation3531.4%58.6%
D30QGD, Capablanca-Duras variation35545.4%53.7%
D31QGD, Charousek (Petrosian) variation154145.3%53.3%
D07QGD, Chigorin defence77135.9%57.0%
D07QGD, Chigorin defence, Janowski variation9334.4%63.4%
D06QGD, Grau (Sahovic) defence12536.8%61.6%
D35QGD, Harrwitz attack21553.0%55.3%
D30QGD, Hastings variation58647.3%52.5%
D31QGD, Janowski variation16942.0%55.9%
D56QGD, Lasker defence34046.2%53.7%
D57QGD, Lasker defence, Bernstein variation1070.0%45.0%
D56QGD, Lasker defence, Teichmann variation9651.0%49.5%
D57QGD, Lasker defence, main line5356.6%50.9%
D53QGD, Lasker variation425.0%87.5%
D51QGD, Manhattan variation1442.9%64.3%
D06QGD, Marshall defence15843.7%58.5%
D55QGD, Neo-orthodox variation633.3%50.0%
D55QGD, Neo-orthodox variation, 7.Bh413744.5%58.0%
D55QGD, Neo-orthodox variation, 7.Bxf635645.2%51.3%
D60QGD, Orthodox defence10436.5%55.8%
D63QGD, Orthodox defence10747.7%59.3%
D62QGD, Orthodox defence, 7.Qc2 c5, 8.cd (Rubinstein)15650.0%56.4%
D63QGD, Orthodox defence, 7.Rc122837.3%57.7%
D66QGD, Orthodox defence, Bd3 line25047.6%59.4%
D67QGD, Orthodox defence, Bd3 line1957.9%44.7%
D67QGD, Orthodox defence, Bd3 line, 11.O-O4736.2%64.9%
D67QGD, Orthodox defence, Bd3 line, Alekhine variation3756.8%55.4%
D66QGD, Orthodox defence, Bd3 line, fianchetto variation1145.5%77.3%
D60QGD, Orthodox defence, Botvinnik variation7133.8%50.7%
D63QGD, Orthodox defence, Capablanca variation1100.0%50.0%
D63QGD, Orthodox defence, Pillsbury attack2552.0%58.0%
D60QGD, Orthodox defence, Rauzer variation4643.5%63.0%
D64QGD, Orthodox defence, Rubinstein attack (with Rc1)9644.8%56.8%
D64QGD, Orthodox defence, Rubinstein attack, Gruenfeld variation1625.0%50.0%
D64QGD, Orthodox defence, Rubinstein attack, Karlsbad variation2040.0%35.0%
D64QGD, Orthodox defence, Rubinstein attack, Wolf variation1346.2%46.2%
D65QGD, Orthodox defence, Rubinstein attack, main line1361.5%69.2%
D61QGD, Orthodox defence, Rubinstein variation24045.4%52.3%
D63QGD, Orthodox defence, Swiss (Henneberger) variation9443.6%62.2%
D63QGD, Orthodox defence, Swiss, Karlsbad variation17142.7%53.5%
D68QGD, Orthodox defence, classical variation7248.6%56.3%
D68QGD, Orthodox defence, classical, 13.d1b1 (Maroczy)366.7%33.3%
D68QGD, Orthodox defence, classical, 13.d1c2 (Vidmar)4854.2%58.3%
D69QGD, Orthodox defence, classical, 13.de1553.3%53.3%
D55QGD, Petrosian variation36351.8%53.7%
D38QGD, Ragozin variation422346.2%52.4%
D39QGD, Ragozin, Vienna variation159250.1%51.1%
D50QGD, Semi-Tarrasch1435.7%53.6%
D40QGD, Semi-Tarrasch defence42242.2%54.7%
D40QGD, Semi-Tarrasch defence, Pillsbury variation3036.7%58.3%
D41QGD, Semi-Tarrasch with e318046.7%57.2%
D41QGD, Semi-Tarrasch, 5.cd62448.2%57.1%
D42QGD, Semi-Tarrasch, 7.Bd326543.4%55.7%
D41QGD, Semi-Tarrasch, Kmoch variation875.0%50.0%
D50QGD, Semi-Tarrasch, Krause variation1100.0%50.0%
D40QGD, Semi-Tarrasch, Levenfish variation10.0%100.0%
D50QGD, Semi-Tarrasch, Primitive Pillsbury variation1241.7%54.2%
D41QGD, Semi-Tarrasch, San Sebastian variation2437.5%77.1%
D40QGD, Semi-Tarrasch, symmetrical variation1145.5%50.0%
D32QGD, Tarrasch defence34446.8%53.6%
D32QGD, Tarrasch defence, 4.cd ed2437.5%52.1%
D32QGD, Tarrasch defence, Marshall gambit633.3%50.0%
D32QGD, Tarrasch defence, Tarrasch gambit944.4%33.3%
D33QGD, Tarrasch, Folkestone (Swedish) variation5650.0%60.7%
D33QGD, Tarrasch, Prague variation8137.0%53.1%
D34QGD, Tarrasch, Prague variation, 7...Be717842.7%56.2%
D34QGD, Tarrasch, Prague variation, 9.Bg554547.5%57.5%
D34QGD, Tarrasch, Prague variation, Normal position66948.0%56.1%
D34QGD, Tarrasch, Reti variation3060.0%60.0%
D33QGD, Tarrasch, Schlechter-Rubinstein system2040.0%55.0%
D33QGD, Tarrasch, Wagner variation1338.5%57.7%
D32QGD, Tarrasch, von Hennig-Schara gambit6943.5%62.3%
D58QGD, Tartakower (Makagonov-Bondarevsky) system498746.4%52.0%
D59QGD, Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd518848.9%46.8%
D59QGD, Tartakower variation11446.5%46.1%
D30QGD, Vienna variation76453.0%52.4%
D37QGD, classical variation (5.Bf4)418144.9%55.2%
D35QGD, exchange variation38143.0%55.9%
D35QGD, exchange, Saemisch variation30846.8%54.2%
D35QGD, exchange, positional line101440.5%54.4%
D35QGD, exchange, positional line, 5...c679342.4%55.5%
D36QGD, exchange, positional line, 6.Qc227743.0%52.9%
D31QGD, semi-Slav105339.9%54.9%
D31QGD, semi-Slav, Abrahams variation13735.8%44.2%
D31QGD, semi-Slav, Junge variation1030.0%35.0%
D31QGD, semi-Slav, Koomen variation955.6%38.9%
D31QGD, semi-Slav, Marshall gambit87743.2%54.1%
D31QGD, semi-Slav, Noteboom variation26237.8%51.7%
D06QGD, symmetrical (Austrian) defence4748.9%58.5%
C40QP counter-gambit (elephant gambit)1560.0%63.3%
C40QP counter-gambit, Maroczy gambit366.7%66.7%
A50Queen's Indian accelerated20347.8%57.9%
A47Queen's Indian defence52038.5%52.1%
E12Queen's Indian defence67542.5%54.0%
E12Queen's Indian, 4.Nc3460740.4%53.2%
E12Queen's Indian, 4.Nc3, Botvinnik variation4022.5%46.3%
E13Queen's Indian, 4.Nc3, main line21634.7%53.0%
E14Queen's Indian, 4.e3174240.0%53.5%
E15Queen's Indian, 4.g3251146.4%55.5%
E15Queen's Indian, 4.g3 Bb728439.8%54.0%
E17Queen's Indian, 5.Bg2 Be73225.0%43.8%
E14Queen's Indian, Averbakh variation20.0%50.0%
E15Queen's Indian, Buerger variation4238.1%61.9%
E16Queen's Indian, Capablanca variation42342.3%56.9%
E17Queen's Indian, Euwe variation6352.4%54.8%
A47Queen's Indian, Marienbad system8237.8%54.3%
A47Queen's Indian, Marienbad system, Berg variation1560.0%56.7%
E12Queen's Indian, Miles variation146843.7%53.6%
E15Queen's Indian, Nimzovich variation (exaggerated fianchetto)1473540.6%56.4%
E17Queen's Indian, Opovcensky variation69539.6%54.9%
E12Queen's Indian, Petrosian system667743.1%54.0%
E16Queen's Indian, Riumin variation22339.5%56.1%
E15Queen's Indian, Rubinstein variation13936.7%59.4%
E16Queen's Indian, Yates variation38037.4%58.7%
E17Queen's Indian, anti-Queen's Indian system33338.1%53.0%
E17Queen's Indian, old main line, 6.O-O96342.2%58.7%
E18Queen's Indian, old main line, 7.Nc3164643.3%57.0%
E19Queen's Indian, old main line, 9.Qxc3137446.4%58.3%
A41Queen's Pawn199935.9%54.6%
D02Queen's bishop game136638.2%53.6%
D20Queen's gambit accepted93146.2%55.3%
D23Queen's gambit accepted3935.9%53.8%
D30Queen's gambit declined607845.4%55.5%
A40Queen's pawn219737.1%55.2%
A45Queen's pawn game238838.5%54.0%
A46Queen's pawn game315640.5%54.7%
A50Queen's pawn game65537.7%56.0%
D00Queen's pawn game66137.8%50.2%
D02Queen's pawn game500541.0%52.7%
D04Queen's pawn game80740.8%51.4%
D05Queen's pawn game61135.7%52.7%
E00Queen's pawn game42441.0%56.4%
E10Queen's pawn game422044.6%55.7%
D02Queen's pawn game, Chigorin variation42740.3%57.1%
D02Queen's pawn game, Krause variation39045.6%54.1%
D05Queen's pawn game, Rubinstein (Colle-Zukertort) variation25539.2%54.1%
D05Queen's pawn game, Zukertort variation2857.1%57.1%
D00Queen's pawn, Anti-Veresov366.7%33.3%
A45Queen's pawn, Bronstein gambit1233.3%50.0%
A40Queen's pawn, Charlick (Englund) gambit2642.3%59.6%
D00Queen's pawn, Chigorin variation34134.0%51.6%
A40Queen's pawn, English defence20142.8%60.7%
A40Queen's pawn, Franco-Indian (Keres) defence113438.8%56.3%
A40Queen's pawn, Keres defence179543.8%56.2%
A40Queen's pawn, Lundin (Kevitz-Mikenas) defence16929.0%56.5%
D00Queen's pawn, Mason variation99539.1%52.6%
D00Queen's pawn, Mason variation, Steinitz counter-gambit50237.3%50.7%
E60Queen's pawn, Mengarini attack3735.1%60.8%
A46Queen's pawn, Torre attack138136.6%52.2%
A46Queen's pawn, Torre attack, Wagner gambit825.0%62.5%
A46Queen's pawn, Yusupov-Rubinstein system79640.8%52.8%
D00Queen's pawn, stonewall attack5736.8%43.0%
A09Reti accepted26539.2%52.8%
A09Reti accepted, Keres variation4032.5%68.8%
A04Reti opening781538.4%54.2%
A05Reti opening364837.1%53.4%
A06Reti opening62937.4%53.0%
A09Reti opening64539.1%53.5%
A04Reti v Dutch106434.8%58.7%
A04Reti, Herrstroem gambit20.0%100.0%
A05Reti, King's Indian attack122339.8%53.6%
A07Reti, King's Indian attack242241.5%52.9%
A08Reti, King's Indian attack55742.4%52.6%
A07Reti, King's Indian attack (Barcza system)476041.3%53.5%
A07Reti, King's Indian attack (with ...c5)18942.9%48.4%
A08Reti, King's Indian attack, French variation26437.1%48.9%
A07Reti, King's Indian attack, Keres variation72334.3%54.5%
A07Reti, King's Indian attack, Pachman system11937.0%52.9%
A05Reti, King's Indian attack, Reti-Smyslov variation6137.7%54.9%
A05Reti, King's Indian attack, Spassky's variation35043.7%53.0%
A07Reti, King's Indian attack, Yugoslav variation167439.9%53.0%
A04Reti, Lisitsin gambit deferred2429.2%68.8%
A06Reti, Nimzovich-Larsen attack339341.7%49.5%
A04Reti, Pirc-Lisitsin gambit12927.9%49.6%
A04Reti, Wade defence20.0%50.0%
A09Reti, advance variation91739.3%48.6%
A06Reti, old Indian attack10027.0%48.5%
B00Reversed Grob (Borg/Basman defence/macho Grob)2025.0%77.5%
D01Richter-Veresov attack47536.2%45.9%
D01Richter-Veresov attack, Richter variation1723.5%52.9%
D01Richter-Veresov attack, Veresov variation2250.0%47.7%
B06Robatsch (modern) defence608536.2%56.3%
B06Robatsch defence70935.8%58.1%
B07Robatsch defence, Geller's system60837.2%57.4%
B06Robatsch defence, Gurgenidze variation5837.9%62.1%
B06Robatsch defence, Pseudo-Austrian attack51034.1%54.9%
A41Robatsch defence, Rossolimo variation14436.8%50.3%
B06Robatsch defence, Two knights variation33633.9%60.4%
B06Robatsch defence, Two knights, Suttles variation101038.1%58.5%
B06Robatsch defence, three pawns attack14928.9%60.7%
C50Rousseau gambit333.3%50.0%
C70Ruy Lopez6241.9%54.8%
C60Ruy Lopez (Spanish opening)3923.1%62.8%
C78Ruy Lopez, ...b5 & ...d65236.5%52.9%
C78Ruy Lopez, 5.O-O112546.3%54.5%
C70Ruy Lopez, Alapin's defence deferred1533.3%76.7%
C77Ruy Lopez, Anderssen variation93441.4%51.6%
C78Ruy Lopez, Archangelsk (counterthrust) variation157641.9%54.6%
C65Ruy Lopez, Berlin defence302639.6%51.2%
C65Ruy Lopez, Berlin defence, 4.O-O18241.2%58.5%
C66Ruy Lopez, Berlin defence, 4.O-O, d69649.0%55.7%
C65Ruy Lopez, Berlin defence, Anderssen variation1100.0%50.0%
C65Ruy Lopez, Berlin defence, Beverwijk variation51437.2%57.5%
C67Ruy Lopez, Berlin defence, Cordel variation5935.6%58.5%
C65Ruy Lopez, Berlin defence, Duras variation1435.7%53.6%
C65Ruy Lopez, Berlin defence, Kaufmann variation3246.9%54.7%
C67Ruy Lopez, Berlin defence, Minckwitz variation4348.8%61.6%
C65Ruy Lopez, Berlin defence, Mortimer variation1560.0%30.0%
C65Ruy Lopez, Berlin defence, Nyholm attack7755.8%53.9%
C67Ruy Lopez, Berlin defence, Pillsbury variation10.0%0.0%
C67Ruy Lopez, Berlin defence, Rosenthal variation2548.0%64.0%
C67Ruy Lopez, Berlin defence, Trifunovic variation520.0%90.0%
C67Ruy Lopez, Berlin defence, Winawer attack2934.5%69.0%
C67Ruy Lopez, Berlin defence, Zukertort variation1553.3%60.0%
C66Ruy Lopez, Berlin defence, hedgehog variation10351.5%58.7%
C67Ruy Lopez, Berlin defence, open variation370746.3%54.0%
C61Ruy Lopez, Bird's defence21641.2%58.6%
C61Ruy Lopez, Bird's defence, Paulsen variation650.0%58.3%
C70Ruy Lopez, Caro variation8542.4%58.8%
C70Ruy Lopez, Classical defence deferred9744.3%60.3%
C64Ruy Lopez, Cordel gambit7342.5%56.8%
C60Ruy Lopez, Cozio defence30342.6%51.3%
C70Ruy Lopez, Cozio defence deferred31744.8%52.7%
C60Ruy Lopez, Cozio defence, Paulsen variation3727.0%70.3%
C85Ruy Lopez, Exchange variation doubly deferred (DERLD)127939.6%49.1%
C70Ruy Lopez, Graz variation6100.0%50.0%
C60Ruy Lopez, Lucena defence425.0%62.5%
C89Ruy Lopez, Marshall counter-attack52052.5%54.5%
C89Ruy Lopez, Marshall counter-attack, 11...c617646.0%56.0%
C89Ruy Lopez, Marshall, Herman Steiner variation333.3%83.3%
C89Ruy Lopez, Marshall, Kevitz variation2100.0%50.0%
C89Ruy Lopez, Marshall, main line, 12.d2d421342.3%62.9%
C89Ruy Lopez, Marshall, main line, 14...Qh342750.4%50.9%
C89Ruy Lopez, Marshall, main line, Spassky variation10.0%0.0%
C78Ruy Lopez, Moeller defence58042.4%53.1%
C77Ruy Lopez, Morphy defence20839.4%56.3%
C77Ruy Lopez, Morphy defence, Duras variation5240.4%56.7%
C63Ruy Lopez, Schliemann defence33843.5%57.8%
C70Ruy Lopez, Schliemann defence deferred2128.6%71.4%
C63Ruy Lopez, Schliemann defence, Berger variation38843.0%56.6%
C74Ruy Lopez, Siesta, Kopayev variation14532.4%55.5%
C79Ruy Lopez, Steinitz defence deferred (Russian defence)25541.2%54.7%
C79Ruy Lopez, Steinitz defence deferred, Lipnitsky variation1172.7%54.5%
C79Ruy Lopez, Steinitz defence deferred, Rubinstein variation1435.7%60.7%
C70Ruy Lopez, Taimanov (chase/wing/accelerated counterthrust) variation13338.3%64.3%
C88Ruy Lopez, Trajkovic counter-attack65141.6%52.0%
C77Ruy Lopez, Treybal (Bayreuth) variation (exchange var. deferred)7443.2%44.6%
C60Ruy Lopez, Vinogradov variation250.0%75.0%
C78Ruy Lopez, Wing attack850.0%50.0%
C77Ruy Lopez, Wormald (Alapin) attack35843.0%54.7%
C77Ruy Lopez, Wormald attack, Gruenfeld variation2100.0%50.0%
C86Ruy Lopez, Worrall attack2454.2%56.3%
C86Ruy Lopez, Worrall attack, sharp line22638.1%53.1%
C86Ruy Lopez, Worrall attack, solid line8040.0%47.5%
C64Ruy Lopez, classical (Cordel) defence23641.9%53.6%
C64Ruy Lopez, classical defence, 4.c326741.9%55.8%
C64Ruy Lopez, classical defence, Benelux variation 40139.9%56.4%
C64Ruy Lopez, classical defence, Charousek variation540.0%80.0%
C64Ruy Lopez, classical defence, Zaitsev variation2100.0%50.0%
C88Ruy Lopez, closed124841.4%52.7%
C96Ruy Lopez, closed (10...c5)64433.1%64.7%
C96Ruy Lopez, closed (8...Na5)2254.5%63.6%
C90Ruy Lopez, closed (with ...d6)119436.9%51.5%
C66Ruy Lopez, closed Berlin defence, Bernstein variation1435.7%53.6%
C66Ruy Lopez, closed Berlin defence, Chigorin variation40.0%50.0%
C66Ruy Lopez, closed Berlin defence, Showalter variation5547.3%56.4%
C66Ruy Lopez, closed Berlin defence, Wolf variation6157.4%56.6%
C84Ruy Lopez, closed defence134240.7%52.1%
C88Ruy Lopez, closed, 7...O-O288040.3%52.2%
C88Ruy Lopez, closed, 7...d6, 8.d42030.0%20.0%
C88Ruy Lopez, closed, 8.c32737.0%63.0%
C91Ruy Lopez, closed, 9.d4121939.0%57.8%
C92Ruy Lopez, closed, 9.h338642.7%52.2%
C87Ruy Lopez, closed, Averbach variation26440.9%59.8%
C88Ruy Lopez, closed, Balla variation4436.4%54.5%
C84Ruy Lopez, closed, Basque gambit (North Spanish variation)250.0%25.0%
C91Ruy Lopez, closed, Bogolyubov variation379943.2%53.8%
C96Ruy Lopez, closed, Borisenko defence4040.0%57.5%
C94Ruy Lopez, closed, Breyer defence6139.3%57.4%
C95Ruy Lopez, closed, Breyer, 10.d410.0%0.0%
C95Ruy Lopez, closed, Breyer, Borisenko variation73740.2%56.4%
C95Ruy Lopez, closed, Breyer, Gligoric variation4845.8%54.2%
C95Ruy Lopez, closed, Breyer, Simagin variation2035.0%57.5%
C97Ruy Lopez, closed, Chigorin defence76930.6%63.5%
C98Ruy Lopez, closed, Chigorin, 12...Nc613831.9%61.6%
C99Ruy Lopez, closed, Chigorin, 12...c5d490940.3%62.7%
C92Ruy Lopez, closed, Flohr-Zaitsev system (Lenzerheide variation)188138.6%56.3%
C96Ruy Lopez, closed, Keres (...Nd7) defence21137.4%65.6%
C92Ruy Lopez, closed, Keres (9...a5) variation1850.0%47.2%
C92Ruy Lopez, closed, Kholmov variation12230.3%66.0%
C90Ruy Lopez, closed, Lutikov variation3748.6%56.8%
C90Ruy Lopez, closed, Pilnik variation82535.5%51.7%
C92Ruy Lopez, closed, Ragozin-Petrosian (`Keres') variation32042.5%63.8%
C96Ruy Lopez, closed, Rossolimo defence30.0%33.3%
C93Ruy Lopez, closed, Smyslov defence16540.6%57.9%
C90Ruy Lopez, closed, Suetin variation7735.1%56.5%
C88Ruy Lopez, closed, anti-Marshall 8.a4156339.5%53.7%
C84Ruy Lopez, closed, centre attack17348.6%46.2%
C68Ruy Lopez, exchange variation8041.3%51.9%
C69Ruy Lopez, exchange variation, 5.O-O70842.1%53.8%
C69Ruy Lopez, exchange variation, Alapin gambit28642.0%51.0%
C68Ruy Lopez, exchange, Alekhine variation1637.5%43.8%
C69Ruy Lopez, exchange, Bronstein variation50434.3%50.5%
C69Ruy Lopez, exchange, Gligoric variation74242.9%55.0%
C68Ruy Lopez, exchange, Keres variation9851.0%52.0%
C68Ruy Lopez, exchange, Romanovsky variation1631.3%53.1%
C60Ruy Lopez, fianchetto (Smyslov/Barnes) defence35241.8%51.3%
C70Ruy Lopez, fianchetto defence deferred5655.4%54.5%
C77Ruy Lopez, four knights (Tarrasch) variation15547.1%55.8%
C71Ruy Lopez, modern Steinitz defence11242.9%55.4%
C74Ruy Lopez, modern Steinitz defence6734.3%56.0%
C75Ruy Lopez, modern Steinitz defence16042.5%54.4%
C72Ruy Lopez, modern Steinitz defence, 5.O-O46644.8%57.4%
C73Ruy Lopez, modern Steinitz defence, Alapin variation10636.8%51.4%
C71Ruy Lopez, modern Steinitz defence, Duras (Keres) variation12543.2%57.6%
C73Ruy Lopez, modern Steinitz defence, Richter variation14651.4%53.8%
C75Ruy Lopez, modern Steinitz defence, Rubinstein variation8538.8%55.9%
C71Ruy Lopez, modern Steinitz defence, Three knights variation1741.2%50.0%
C76Ruy Lopez, modern Steinitz defence, fianchetto (Bronstein) variation34334.7%51.5%
C74Ruy Lopez, modern Steinitz defence, siesta variation2441.7%50.0%
C62Ruy Lopez, old Steinitz defence28239.4%54.8%
C62Ruy Lopez, old Steinitz defence, Nimzovich attack520.0%50.0%
C80Ruy Lopez, open (Tarrasch) defence5745.6%59.6%
C67Ruy Lopez, open Berlin defence, 5...Be77437.8%52.7%
C67Ruy Lopez, open Berlin defence, Showalter variation1428.6%42.9%
C67Ruy Lopez, open Berlin defence, l'Hermet variation8356.6%50.0%
C80Ruy Lopez, open, 6.d44537.8%45.6%
C80Ruy Lopez, open, 7.Bb348541.0%52.9%
C80Ruy Lopez, open, 8...Be6124238.5%43.2%
C83Ruy Lopez, open, 9...Be7, 10.Re14334.9%54.7%
C82Ruy Lopez, open, 9.c3728.6%71.4%
C80Ruy Lopez, open, Berger variation366.7%33.3%
C82Ruy Lopez, open, Berlin variation2429.2%72.9%
C80Ruy Lopez, open, Bernstein variation89448.2%62.9%
C80Ruy Lopez, open, Bernstein variation, Karpov gambit2646.2%42.3%
C83Ruy Lopez, open, Breslau variation250.0%75.0%
C82Ruy Lopez, open, Dilworth variation16041.9%60.9%
C80Ruy Lopez, open, Friess attack1020.0%60.0%
C80Ruy Lopez, open, Harksen gambit10.0%100.0%
C81Ruy Lopez, open, Howell attack14650.7%52.1%
C81Ruy Lopez, open, Howell attack, Adam variation20.0%0.0%
C81Ruy Lopez, open, Howell attack, Ekstroem variation1040.0%60.0%
C82Ruy Lopez, open, Italian variation9350.5%65.1%
C83Ruy Lopez, open, Malkin variation1662.5%56.3%
C82Ruy Lopez, open, Motzko attack6746.3%59.0%
C82Ruy Lopez, open, Motzko attack, Nenarokov variation1060.0%70.0%
C80Ruy Lopez, open, Riga variation1050.0%65.0%
C80Ruy Lopez, open, Schlechter defence1931.6%26.3%
C82Ruy Lopez, open, St. Petersburg variation19141.4%65.7%
C80Ruy Lopez, open, Tartakower variation1154.5%45.5%
C80Ruy Lopez, open, Zukertort variation333.3%50.0%
C83Ruy Lopez, open, classical defence18147.5%60.8%
A06Santasiere's folly12840.6%42.2%
A00Saragossa opening36030.6%50.6%
B01Scandinavian (centre counter) defence260441.6%57.1%
B01Scandinavian defence103840.6%59.5%
B01Scandinavian defence, Gruenfeld variation40.0%75.0%
B01Scandinavian defence, Lasker variation11733.3%64.5%
B01Scandinavian gambit15541.9%53.2%
B01Scandinavian, Anderssen counter-attack orthodox attack10.0%100.0%
B01Scandinavian, Anderssen counter-attack, Collijn variation10.0%100.0%
B01Scandinavian, Icelandic gambit6043.3%55.0%
B01Scandinavian, Kiel variation728.6%85.7%
B01Scandinavian, Marshall variation56445.2%60.0%
B01Scandinavian, Mieses-Kotrvc gambit862.5%43.8%
B01Scandinavian, Pytel-Wade variation272643.8%58.2%
B01Scandinavian, Richter variation450.0%75.0%
C44Scotch gambit5236.5%62.5%
C44Scotch gambit, Anderssen (Paulsen, Suhle) counter-attack666.7%33.3%
C44Scotch gambit, Benima defence5335.8%55.7%
C44Scotch gambit, Dubois-Reti defence30041.7%51.5%
C44Scotch gambit, Hanneken variation10.0%100.0%
C45Scotch game243242.8%53.6%
C44Scotch opening475.0%37.5%
C45Scotch, Blackburne attack1741.2%50.0%
C45Scotch, Blumenfeld attack1637.5%31.3%
C45Scotch, Ghulam Kassim variation4100.0%50.0%
C44Scotch, Goering gambit19044.7%57.1%
C44Scotch, Goering gambit, Bardeleben variation1050.0%45.0%
C45Scotch, Horwitz attack2536.0%66.0%
C44Scotch, Lolli variation1637.5%56.3%
C45Scotch, Meitner variation3554.3%55.7%
C45Scotch, Mieses variation139141.1%54.2%
C45Scotch, Paulsen attack333.3%83.3%
C45Scotch, Potter variation52939.7%51.6%
C45Scotch, Pulling counter-attack520.0%70.0%
C44Scotch, Relfsson gambit ('MacLopez')666.7%66.7%
C45Scotch, Romanishin variation5743.9%60.5%
C45Scotch, Schmidt variation66249.7%46.8%
C45Scotch, Steinitz variation4233.3%54.8%
C45Scotch, Tartakower variation1637.5%43.8%
A44Semi-Benoni (`blockade variation')14427.8%59.0%
B50Sicilian397040.3%53.2%
B54Sicilian85037.6%55.3%
B56Sicilian162539.7%53.4%
B20Sicilian defence217335.8%50.4%
B27Sicilian defence1833.3%55.6%
B30Sicilian defence268640.2%54.7%
B32Sicilian defence84038.9%55.8%
B33Sicilian defence45636.0%54.2%
B40Sicilian defence517738.9%53.8%
B44Sicilian defence31243.9%52.1%
B22Sicilian, 2.c3, Heidenfeld variation5825.9%45.7%
B22Sicilian, Alapin's variation (2.c3)607543.4%54.7%
B40Sicilian, Anderssen variation80340.2%57.3%
B21Sicilian, Andreaschek gambit1442.9%57.1%
B58Sicilian, Boleslavsky variation43536.8%48.0%
B59Sicilian, Boleslavsky variation, 7.Nb313046.9%51.9%
B58Sicilian, Boleslavsky, Louma variation4637.0%57.6%
B51Sicilian, Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack170338.2%55.5%
B52Sicilian, Canal-Sokolsky attack, 3...Bd7169042.8%50.0%
B52Sicilian, Canal-Sokolsky attack, Bronstein gambit20040.0%57.5%
B52Sicilian, Canal-Sokolsky attack, Sokolsky variation82243.7%55.5%
B53Sicilian, Chekhover variation128542.7%50.9%
B53Sicilian, Chekhover, Zaitsev variation6426.6%55.5%
B32Sicilian, Flohr variation23433.3%60.3%
B20Sicilian, Gloria variation40.0%50.0%
B21Sicilian, Grand Prix attack153835.6%52.4%
B23Sicilian, Grand Prix attack74536.6%50.0%
B23Sicilian, Grand Prix attack, Schofman variation15240.8%52.6%
B27Sicilian, Hungarian variation340740.7%57.5%
B41Sicilian, Kan variation21341.8%55.6%
B42Sicilian, Kan, 5.Bd3189237.7%58.2%
B43Sicilian, Kan, 5.Nc3295838.7%56.4%
B42Sicilian, Kan, Gipslis variation8038.8%63.1%
B41Sicilian, Kan, Maroczy bind (Reti variation)47835.6%57.9%
B41Sicilian, Kan, Maroczy bind - Bronstein variation2330.4%32.6%
B42Sicilian, Kan, Polugaievsky variation142836.3%54.2%
B42Sicilian, Kan, Swiss cheese variation26735.6%61.2%
B27Sicilian, Katalimov variation13644.1%61.0%
B20Sicilian, Keres variation (2.Ne2)63940.7%52.4%
B32Sicilian, Labourdonnais-Loewenthal (Kalashnikov) variation121740.0%56.5%
B32Sicilian, Labourdonnais-Loewenthal variation23540.9%59.1%
B57Sicilian, Magnus Smith trap1050.0%35.0%
B40Sicilian, Marshall variation10.0%100.0%
B90Sicilian, Najdorf275336.2%53.9%
B98Sicilian, Najdorf variation33230.1%57.5%
B95Sicilian, Najdorf, 6...e6108538.8%49.3%
B94Sicilian, Najdorf, 6.Bg579935.3%52.9%
B93Sicilian, Najdorf, 6.f4158739.6%50.7%
B98Sicilian, Najdorf, 7...Be712632.5%54.4%
B99Sicilian, Najdorf, 7...Be7 main line61128.6%53.1%
B97Sicilian, Najdorf, 7...Qb6158133.2%46.4%
B96Sicilian, Najdorf, 7.f4135334.8%51.6%
B90Sicilian, Najdorf, Adams attack122038.0%52.4%
B98Sicilian, Najdorf, Browne variation4327.9%60.5%
B90Sicilian, Najdorf, Byrne (English) attack1947735.3%53.2%
B98Sicilian, Najdorf, Goteborg (Argentine) variation2250.0%47.7%
B90Sicilian, Najdorf, Lipnitzky attack97535.9%49.6%
B92Sicilian, Najdorf, Opovcensky variation511040.0%53.3%
B97Sicilian, Najdorf, Poisoned pawn variation110045.0%49.8%
B96Sicilian, Najdorf, Polugayevsky variation9938.4%52.5%
B96Sicilian, Najdorf, Polugayevsky, Simagin variation3122.6%56.5%
B91Sicilian, Najdorf, Zagreb (fianchetto) variation73438.0%53.9%
B32Sicilian, Nimzovich variation2339.1%54.3%
B31Sicilian, Nimzovich-Rossolimo attack (with ...g6, without ...d6)288441.0%56.1%
B30Sicilian, Nimzovich-Rossolimo attack (without ...d6)455138.2%56.3%
B31Sicilian, Nimzovich-Rossolimo attack, Gurgenidze variation2556.0%56.0%
B29Sicilian, Nimzovich-Rubinstein variation78842.1%59.0%
B29Sicilian, Nimzovich-Rubinstein; Rubinstein counter-gambit3253.1%48.4%
B28Sicilian, O'Kelly variation40539.5%57.0%
B33Sicilian, Pelikan (Lasker/Sveshnikov) variation99335.6%55.2%
B33Sicilian, Pelikan, Bird variation23437.6%62.8%
B33Sicilian, Pelikan, Chelyabinsk variation210936.0%57.2%
B40Sicilian, Pin variation (Sicilian counter-attack)1931.6%73.7%
B40Sicilian, Pin, Koch variation4825.0%79.2%
B54Sicilian, Prins (Moscow) variation44638.3%57.7%
B55Sicilian, Prins variation, Venice attack5246.2%51.9%
B27Sicilian, Quinteros variation4337.2%60.5%
B60Sicilian, Richter-Rauzer70335.7%58.5%
B62Sicilian, Richter-Rauzer, 6...e64639.1%58.7%
B60Sicilian, Richter-Rauzer, Bondarevsky variation3354.5%60.6%
B62Sicilian, Richter-Rauzer, Keres variation7634.2%50.0%
B60Sicilian, Richter-Rauzer, Larsen variation15430.5%59.4%
B61Sicilian, Richter-Rauzer, Larsen variation, 7.Qd242438.9%61.2%
B62Sicilian, Richter-Rauzer, Margate (Alekhine) variation6038.3%50.8%
B62Sicilian, Richter-Rauzer, Podvebrady variation1850.0%36.1%
B63Sicilian, Richter-Rauzer, Rauzer attack14936.9%57.4%
B63Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7111937.7%55.9%
B65Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9...Nxd455040.2%55.7%
B64Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9.f426539.2%54.0%
B66Sicilian, Richter-Rauzer, Rauzer attack, 7...a6568933.6%51.5%
B69Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 11.Bxf68132.1%60.5%
B67Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 8...Bd7278633.3%55.6%
B68Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 9...Be710729.9%57.0%
B64Sicilian, Richter-Rauzer, Rauzer attack, Geller variation1136.4%63.6%
B62Sicilian, Richter-Rauzer, Richter attack10.0%100.0%
B84Sicilian, Scheveningen (Paulsen), classical variation367038.7%52.1%
B80Sicilian, Scheveningen variation124130.9%54.1%
B83Sicilian, Scheveningen, 6.Be254340.0%52.8%
B82Sicilian, Scheveningen, 6.f450332.6%57.3%
B80Sicilian, Scheveningen, English variation14531.7%53.1%
B81Sicilian, Scheveningen, Keres attack221834.4%59.6%
B82Sicilian, Scheveningen, Tal variation11735.9%62.4%
B80Sicilian, Scheveningen, Vitolins variation4949.0%51.0%
B85Sicilian, Scheveningen, classical13441.0%51.9%
B85Sicilian, Scheveningen, classical main line35446.0%55.5%
B85Sicilian, Scheveningen, classical variation with ...Qc7 and ...Nc6366.7%66.7%
B85Sicilian, Scheveningen, classical, Maroczy system2634.6%55.8%
B84Sicilian, Scheveningen, classical, Nd7 system8235.4%50.6%
B80Sicilian, Scheveningen, fianchetto variation19433.5%51.3%
B21Sicilian, Smith-Morra gambit77241.7%47.4%
B86Sicilian, Sozin attack19142.9%52.9%
B87Sicilian, Sozin with ...a6 and ...b577436.6%51.1%
B89Sicilian, Sozin, 7.Be3103437.2%50.6%
B57Sicilian, Sozin, Benko variation129839.3%51.6%
B88Sicilian, Sozin, Fischer variation1650.0%50.0%
B88Sicilian, Sozin, Leonhardt variation58740.2%54.5%
B57Sicilian, Sozin, not Scheveningen24143.6%55.8%
B20Sicilian, Steinitz variation40942.8%50.2%
B33Sicilian, Sveshnikov variation138538.5%50.8%
B44Sicilian, Szen (`anti-Taimanov') variation82040.0%53.7%
B44Sicilian, Szen variation, Dely-Kasparov gambit2161.9%59.5%
B44Sicilian, Szen, hedgehog variation22839.5%50.9%
B47Sicilian, Taimanov (Bastrikov) variation382241.2%54.2%
B45Sicilian, Taimanov variation195238.1%56.5%
B46Sicilian, Taimanov variation314338.5%55.2%
B48Sicilian, Taimanov variation329137.1%56.2%
B49Sicilian, Taimanov variation65244.5%58.3%
B45Sicilian, Taimanov, American attack1942.1%42.1%
B89Sicilian, Velimirovic attack74533.8%51.5%
B56Sicilian, Venice attack5536.4%65.5%
B39Sicilian, accelerated fianchetto, Breyer variation63940.8%58.3%
B36Sicilian, accelerated fianchetto, Gurgenidze variation27244.1%60.3%
B36Sicilian, accelerated fianchetto, Maroczy bind95144.9%58.0%
B37Sicilian, accelerated fianchetto, Maroczy bind, 5...Bg714646.6%55.5%
B38Sicilian, accelerated fianchetto, Maroczy bind, 6.Be3107843.9%57.7%
B37Sicilian, accelerated fianchetto, Simagin variation2100.0%50.0%
B34Sicilian, accelerated fianchetto, exchange variation1947.4%65.8%
B34Sicilian, accelerated fianchetto, modern variation35636.5%51.7%
B35Sicilian, accelerated fianchetto, modern variation with Bc4198143.2%53.5%
B23Sicilian, chameleon variation62634.3%57.7%
B58Sicilian, classical21546.5%47.0%
B23Sicilian, closed320338.1%51.7%
B24Sicilian, closed46236.1%50.8%
B25Sicilian, closed26937.5%49.3%
B23Sicilian, closed, 2...Nc6180240.5%51.6%
B26Sicilian, closed, 6.Be360132.6%49.9%
B25Sicilian, closed, 6.Ne2 e5 (Botvinnik)5131.4%51.0%
B25Sicilian, closed, 6.f443339.7%51.0%
B25Sicilian, closed, 6.f4 e5 (Botvinnik)2846.4%55.4%
B23Sicilian, closed, Korchnoi variation15248.7%52.0%
B24Sicilian, closed, Smyslov variation2133.3%54.8%
B70Sicilian, dragon variation72741.8%51.6%
B72Sicilian, dragon, 6.Be310036.0%54.0%
B71Sicilian, dragon, Levenfish variation7834.6%55.8%
B71Sicilian, dragon, Levenfish; Flohr variation1040.0%60.0%
B75Sicilian, dragon, Yugoslav attack32331.0%57.9%
B78Sicilian, dragon, Yugoslav attack, 10.O-O-O37928.8%56.1%
B79Sicilian, dragon, Yugoslav attack, 12.h41030.0%65.0%
B76Sicilian, dragon, Yugoslav attack, 7...O-O32534.5%52.9%
B77Sicilian, dragon, Yugoslav attack, 9...Bd720341.9%55.4%
B77Sicilian, dragon, Yugoslav attack, 9.Bc410833.3%50.9%
B77Sicilian, dragon, Yugoslav attack, Byrne variation475.0%62.5%
B76Sicilian, dragon, Yugoslav attack, Rauser variation92633.4%64.6%
B72Sicilian, dragon, classical attack9938.4%52.5%
B73Sicilian, dragon, classical, 8.O-O36746.0%52.2%
B74Sicilian, dragon, classical, 9.Nb337152.6%48.1%
B74Sicilian, dragon, classical, Alekhine variation2347.8%67.4%
B72Sicilian, dragon, classical, Amsterdam variation4425.0%46.6%
B72Sicilian, dragon, classical, Grigoriev variation3844.7%46.1%
B72Sicilian, dragon, classical, Nottingham variation2245.5%54.5%
B74Sicilian, dragon, classical, Reti-Tartakower variation8547.1%55.3%
B73Sicilian, dragon, classical, Richter variation11145.9%57.2%
B74Sicilian, dragon, classical, Spielmann variation837.5%56.3%
B73Sicilian, dragon, classical, Zollner gambit944.4%44.4%
B83Sicilian, modern Scheveningen43641.7%48.9%
B83Sicilian, modern Scheveningen, main line52344.2%53.1%
B83Sicilian, modern Scheveningen, main line with Nb39036.7%56.1%
B20Sicilian, wing gambit5950.8%40.7%
B50Sicilian, wing gambit deferred2123.8%35.7%
B20Sicilian, wing gambit, Carlsbad variation1540.0%46.7%
B20Sicilian, wing gambit, Marienbad variation10.0%0.0%
B20Sicilian, wing gambit, Marshall variation6431.3%54.7%
B00St. George (Baker) defence4037.5%61.3%
C00St. George defence12449.2%63.3%
A06Tennison (Lemberg, Zukertort) gambit2254.5%40.9%
C46Three knights game14738.1%54.4%
C46Three knights, Schlechter variation2035.0%52.5%
C46Three knights, Steinitz variation6041.7%54.2%
C46Three knights, Steinitz, Rosenthal variation742.9%35.7%
C46Three knights, Winawer defence (Gothic defence)10.0%100.0%
D03Torre attack (Tartakower variation)66839.4%51.0%
A45Trompovsky attack (Ruth, Opovcensky opening)408035.9%52.5%
C55Two knights defence6744.8%52.2%
C56Two knights defence13943.9%49.3%
C57Two knights defence1216.7%41.7%
C58Two knights defence19535.9%56.4%
C59Two knights defence19238.0%49.2%
C55Two knights defence (Modern bishop's opening)135338.4%56.2%
C58Two knights defence, Blackburne variation30.0%66.7%
C58Two knights defence, Bogolyubov variation5932.2%46.6%
C56Two knights defence, Canal variation540.0%40.0%
C58Two knights defence, Colman variation4129.3%39.0%
C57Two knights defence, Fegatello attack6726.9%53.7%
C57Two knights defence, Fegatello attack, Leonhardt variation825.0%50.0%
C57Two knights defence, Fegatello attack, Polerio defence40.0%100.0%
C57Two knights defence, Fritz variation2556.0%48.0%
C57Two knights defence, Fritz, Gruber variation633.3%50.0%
C59Two knights defence, Goering variation425.0%12.5%
C55Two knights defence, Keidanz variation1100.0%50.0%
C58Two knights defence, Kieseritsky variation850.0%62.5%
C57Two knights defence, Lolli attack1936.8%55.3%
C58Two knights defence, Paoli variation933.3%72.2%
C55Two knights defence, Perreux variation2744.4%55.6%
C59Two knights defence, Steinitz variation34429.4%48.1%
C57Two knights defence, Ulvestad variation3259.4%45.3%
C57Two knights defence, Wilkes Barre (Traxler) variation5637.5%56.3%
C58Two knights defence, Yankovich variation1241.7%20.8%
C55Two knights, Max Lange attack2138.1%52.4%
C55Two knights, Max Lange attack, Loman defence10.0%100.0%
C55Two knights, Max Lange attack, Marshall variation825.0%62.5%
C55Two knights, Max Lange attack, Schlechter variation2250.0%52.3%
C55Two knights, Max Lange attack, Steinitz variation1241.7%62.5%
A00Van't Kruijs opening50740.8%51.2%
C25Vienna gambit4630.4%56.5%
C29Vienna gambit21040.0%45.7%
C29Vienna gambit, Bardeleben variation742.9%35.7%
C29Vienna gambit, Breyer variation10233.3%52.9%
C29Vienna gambit, Kaufmann variation837.5%68.8%
C29Vienna gambit, Paulsen attack1154.5%54.5%
C29Vienna gambit, Steinitz variation633.3%33.3%
C29Vienna gambit, Wurzburger trap20.0%100.0%
C25Vienna game27437.2%59.5%
C26Vienna game28743.9%54.0%
C27Vienna game12944.2%54.7%
C28Vienna game37442.2%53.2%
C25Vienna game, Max Lange defence2343.5%52.2%
C27Vienna, Alekhine variation1442.9%50.0%
C26Vienna, Falkbeer variation5945.8%58.5%
C26Vienna, Mengarini variation1266.7%41.7%
C25Vienna, Paulsen variation9232.6%58.7%
C26Vienna, Paulsen-Mieses variation53141.2%52.4%
C25Vienna, Pierce gambit1145.5%59.1%
C25Vienna, Steinitz gambit10.0%0.0%
C27Vienna, `Frankenstein-Dracula' variation20.0%100.0%
A56Vulture defence1100.0%50.0%
A00Ware (Meadow Hay) opening540.0%60.0%
B12de Bruycker defence119.1%59.1%

Created in 2005-2013 by CCRL team
Last games added on June 18, 2018