CCRL 40/40
Downloads and Statistics
February 17, 2018
Testing summary:
Total: 795'341 games
played by 2'045 programs
110322 CPU days (X2 4600+)

White wins: 272'710 (34.3%)
Black wins: 201'857 (25.4%)
Draws: 320'774 (40.3%)
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 opening1729.4%67.6%
B02Alekhine's defence56035.9%54.9%
B03Alekhine's defence8633.7%62.2%
B03Alekhine's defence, Balogh variation1030.0%75.0%
B02Alekhine's defence, Brooklyn defence714.3%35.7%
B02Alekhine's defence, Kmoch variation714.3%21.4%
B02Alekhine's defence, Krejcik variation250.0%25.0%
B02Alekhine's defence, Maroczy variation8836.4%58.0%
B02Alekhine's defence, Saemisch attack25536.9%49.4%
B02Alekhine's defence, Scandinavian variation19442.8%54.9%
B02Alekhine's defence, Spielmann variation1729.4%44.1%
B02Alekhine's defence, Steiner variation944.4%55.6%
B02Alekhine's defence, Two pawns' (Lasker's) attack28144.1%54.4%
B03Alekhine's defence, exchange variation60939.4%57.6%
B03Alekhine's defence, exchange, Karpov variation850.0%50.0%
B03Alekhine's defence, four pawns attack23831.5%65.3%
B03Alekhine's defence, four pawns attack, 6...Nc61225.0%45.8%
B03Alekhine's defence, four pawns attack, 7.Be310935.8%67.4%
B03Alekhine's defence, four pawns attack, Ilyin-Genevsky var.742.9%21.4%
B03Alekhine's defence, four pawns attack, Planinc variation520.0%30.0%
B03Alekhine's defence, four pawns attack, Trifunovic variation5935.6%68.6%
B03Alekhine's defence, four pawns attack, fianchetto variation11832.2%59.3%
B04Alekhine's defence, modern variation22733.5%60.8%
B05Alekhine's defence, modern variation, 4...Bg459332.5%64.8%
B05Alekhine's defence, modern, Alekhine variation742.9%50.0%
B05Alekhine's defence, modern, Flohr variation12037.5%63.8%
B04Alekhine's defence, modern, Keres variation4533.3%72.2%
B04Alekhine's defence, modern, Larsen variation78542.5%60.5%
B05Alekhine's defence, modern, Panov variation1323.1%57.7%
B04Alekhine's defence, modern, Schmid variation14839.2%61.5%
B05Alekhine's defence, modern, Vitolins attack450.0%50.0%
B04Alekhine's defence, modern, fianchetto variation65634.5%57.6%
A00Amar (Paris) opening1844.4%33.3%
A00Amar gambit10.0%0.0%
A00Amsterdam attack10.0%100.0%
A00Anderssen's opening39840.7%51.0%
A00Anti-Borg (Desprez) opening30.0%33.3%
A00Battambang opening1631.3%46.9%
A40Beefeater defence3423.5%67.6%
A57Benko gambit62136.9%56.1%
A59Benko gambit4143.9%63.4%
A58Benko gambit accepted66734.0%58.5%
A57Benko gambit half accepted78239.4%57.5%
A59Benko gambit, 7.e4633.3%50.0%
A58Benko gambit, Nd2 variation837.5%56.3%
A59Benko gambit, Ne2 variation30.0%33.3%
A57Benko gambit, Zaitsev system7339.7%48.6%
A58Benko gambit, fianchetto variation15044.0%61.3%
A59Benko gambit, main line11841.5%66.5%
A00Benko's opening625842.2%52.3%
A00Benko's opening, reversed Alekhine11342.5%48.7%
A56Benoni defence59234.1%59.6%
A60Benoni defence12423.4%63.3%
A61Benoni defence47531.8%62.8%
A56Benoni defence, Hromodka system38824.5%65.1%
A65Benoni, 6.e431927.0%56.7%
A66Benoni, Mikenas variation1723.5%47.1%
A61Benoni, Nimzovich (knight's tour) variation35528.5%59.3%
A67Benoni, Taimanov variation22426.3%63.2%
A61Benoni, Uhlmann variation19222.4%39.3%
A78Benoni, classical with ...Re8 and ...Na63836.8%57.9%
A75Benoni, classical with ...a6 and 10...Bg45127.5%70.6%
A70Benoni, classical with e4 and Nf356939.7%59.4%
A70Benoni, classical without 9.O-O425.0%37.5%
A72Benoni, classical without 9.O-O6445.3%61.7%
A79Benoni, classical, 11.f35429.6%59.3%
A71Benoni, classical, 8.Bg59230.4%55.4%
A76Benoni, classical, 9...Re89839.8%63.8%
A77Benoni, classical, 9...Re8, 10.Nd212226.2%68.0%
A74Benoni, classical, 9...a6, 10.a42142.9%73.8%
A73Benoni, classical, 9.O-O4928.6%57.1%
A61Benoni, fianchetto variation1414.3%78.6%
A62Benoni, fianchetto variation70736.1%56.1%
A64Benoni, fianchetto, 11...Re811440.4%43.9%
A63Benoni, fianchetto, 9...Nbd77433.8%65.5%
A68Benoni, four pawns attack7334.2%56.8%
A69Benoni, four pawns attack, main line7938.0%46.8%
A66Benoni, pawn storm variation540.0%60.0%
A02Bird's opening299736.4%48.7%
A03Bird's opening299635.9%47.7%
A03Bird's opening, Lasker variation9429.8%43.6%
A02Bird's opening, Swiss gambit250.0%75.0%
A03Bird's opening, Williams gambit2937.9%63.8%
A02Bird, From gambit15034.7%50.0%
A02Bird, From gambit, Lasker variation2955.2%58.6%
A02Bird, From gambit, Lipke variation10.0%0.0%
A02Bird, Hobbs gambit560.0%70.0%
C23Bishop's opening16338.0%54.0%
C24Bishop's opening, Berlin defence101440.8%53.4%
C23Bishop's opening, Calabrese counter-gambit, Jaenisch variation30.0%100.0%
C23Bishop's opening, Classical variation5238.5%53.8%
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-attack15157.0%49.0%
C23Bishop's opening, Philidor variation944.4%55.6%
C24Bishop's opening, Ponziani gambit520.0%10.0%
C24Bishop's opening, Urusov gambit4831.3%36.5%
C23Bishop's opening, Wing gambit250.0%75.0%
D00Blackmar gambit20041.0%40.5%
A45Blackmar-Diemer gambit18128.7%49.7%
D00Blackmar-Diemer gambit3020.0%40.0%
D00Blackmar-Diemer, Euwe defence2623.1%42.3%
E10Blumenfeld counter-gambit30242.4%54.3%
E10Blumenfeld counter-gambit accepted11741.0%53.8%
E10Blumenfeld counter-gambit, Dus-Chotimursky variation16933.7%57.1%
E10Blumenfeld counter-gambit, Spielmann variation8236.6%57.3%
C27Boden-Kieseritsky gambit4032.5%31.3%
C27Boden-Kieseritsky gambit, Lichtenhein defence560.0%30.0%
E11Bogo-Indian defence144239.7%54.8%
E11Bogo-Indian defence, Gruenfeld variation190640.5%56.1%
E11Bogo-Indian defence, Monticelli trap1346.2%46.2%
E11Bogo-Indian defence, Nimzovich variation139838.6%57.8%
A52Budapest defence3043.3%48.3%
A51Budapest defence declined742.9%64.3%
A52Budapest, Adler variation15646.8%54.8%
A52Budapest, Alekhine variation1323.1%65.4%
A52Budapest, Alekhine variation, Balogh gambit1100.0%50.0%
A52Budapest, Alekhine, Abonyi variation5827.6%62.1%
A51Budapest, Fajarowicz variation3525.7%61.4%
A51Budapest, Fajarowicz, Steiner variation560.0%50.0%
A52Budapest, Rubinstein variation35640.4%60.4%
A45Canard opening1338.5%26.9%
B10Caro-Kann defence206136.1%53.2%
B12Caro-Kann defence19235.9%51.8%
B15Caro-Kann defence21532.1%51.9%
B12Caro-Kann, 3.Nd214943.0%59.7%
B15Caro-Kann, Alekhine gambit2339.1%50.0%
B16Caro-Kann, Bronstein-Larsen variation46231.2%61.5%
B12Caro-Kann, Edinburgh variation3342.4%57.6%
B15Caro-Kann, Forgacs variation21442.1%55.1%
B10Caro-Kann, Goldman (Spielmann) variation7540.0%49.3%
B15Caro-Kann, Gurgenidze counter-attack366.7%66.7%
B15Caro-Kann, Gurgenidze system29739.1%57.2%
B10Caro-Kann, Hillbilly attack20.0%50.0%
B13Caro-Kann, Panov-Botvinnik attack97247.6%52.7%
B14Caro-Kann, Panov-Botvinnik attack, 5...e6174646.6%55.3%
B14Caro-Kann, Panov-Botvinnik attack, 5...g631049.7%53.2%
B13Caro-Kann, Panov-Botvinnik, Czerniak variation2828.6%50.0%
B13Caro-Kann, Panov-Botvinnik, Gunderam attack1118.2%54.5%
B13Caro-Kann, Panov-Botvinnik, Herzog defence1435.7%46.4%
B13Caro-Kann, Panov-Botvinnik, Reifir (Spielmann) variation366.7%66.7%
B13Caro-Kann, Panov-Botvinnik, normal variation9050.0%57.2%
B15Caro-Kann, Rasa-Studier gambit119.1%31.8%
B17Caro-Kann, Steinitz variation362743.0%53.7%
B15Caro-Kann, Tartakower (Nimzovich) variation31141.8%55.0%
B12Caro-Kann, Tartakower (fantasy) variation60038.2%54.6%
B10Caro-Kann, Two knights variation31238.1%59.8%
B11Caro-Kann, Two knights, 3...Bg480340.1%55.7%
B12Caro-Kann, advance variation957338.2%56.3%
B12Caro-Kann, advance, Short variation4833.3%52.1%
B10Caro-Kann, anti-Caro-Kann defence52433.4%60.6%
B10Caro-Kann, anti-anti-Caro-Kann defence131348.4%52.1%
B18Caro-Kann, classical variation149744.9%54.2%
B18Caro-Kann, classical, 6.h452741.0%53.9%
B19Caro-Kann, classical, 7...Nd737950.4%53.2%
B18Caro-Kann, classical, Flohr variation8357.8%49.4%
B18Caro-Kann, classical, Maroczy attack1020.0%40.0%
B19Caro-Kann, classical, Spassky variation263839.7%56.7%
B10Caro-Kann, closed (Breyer) variation65537.7%52.7%
B13Caro-Kann, exchange variation75139.7%51.7%
B13Caro-Kann, exchange, Rubinstein variation12536.8%52.8%
B12Caro-Masi defence1100.0%50.0%
B00Carr's defence450.0%50.0%
E00Catalan opening306842.8%55.2%
E01Catalan, closed46347.9%52.5%
E06Catalan, closed, 5.Nf3286248.5%54.0%
E07Catalan, closed, 6...Nbd76336.5%51.6%
E08Catalan, closed, 7.Qc29040.0%60.0%
E07Catalan, closed, Botvinnik variation6645.5%43.9%
E08Catalan, closed, Qc2 & b320042.0%50.5%
E08Catalan, closed, Spassky gambit728.6%57.1%
E08Catalan, closed, Zagoryansky variation475.0%37.5%
E09Catalan, closed, main line21534.0%60.2%
E04Catalan, open, 5.Nf3416343.6%53.3%
E02Catalan, open, 5.Qa413647.1%58.8%
E03Catalan, open, 5.Qa4 Nbd7, 6.Qxc47254.2%41.0%
E03Catalan, open, Alekhine variation1421.4%39.3%
E05Catalan, open, classical line10053.0%54.5%
C21Centre game14943.6%58.1%
C22Centre game39638.1%46.1%
C22Centre game, Berger variation35437.6%54.7%
C22Centre game, Charousek variation450.0%50.0%
C22Centre game, Hall variation944.4%44.4%
C22Centre game, Paulsen attack18938.1%51.3%
A00Clemenz (Mead's, Basman's or de Klerk's) opening2931.0%43.1%
D05Colle system16949.1%54.7%
B00Corn stalk defence250.0%25.0%
A56Czech Benoni defence29228.1%67.5%
A56Czech Benoni, King's Indian system4214.3%64.3%
C21Danish gambit10941.3%47.2%
C21Danish gambit, Collijn defence475.0%37.5%
C21Danish gambit, Schlechter defence714.3%50.0%
C21Danish gambit, Soerensen defence3262.5%56.3%
E10Doery defence2142.9%54.8%
C44Dresden opening20.0%0.0%
A00Dunst (Sleipner, Heinrichsen) opening162735.8%49.6%
A00Durkin's attack650.0%41.7%
A80Dutch192635.5%54.6%
A81Dutch defence313838.2%56.8%
A84Dutch defence53839.0%56.3%
A90Dutch defence97339.3%61.2%
A91Dutch defence10034.0%52.0%
A92Dutch defence5550.9%58.2%
A92Dutch defence, Alekhine variation3540.0%62.9%
A81Dutch defence, Blackburne variation4930.6%52.0%
A90Dutch defence, Dutch-Indian (Nimzo-Dutch) variation20434.8%61.5%
A84Dutch defence, Rubinstein variation26535.8%58.7%
A85Dutch with c4 & Nc362235.4%54.3%
A86Dutch with c4 & g38937.1%64.6%
A80Dutch, 2.Bg5 variation91734.0%54.3%
A82Dutch, Balogh defence1233.3%83.3%
A86Dutch, Hort-Antoshin system475.0%62.5%
A97Dutch, Ilyin-Genevsky variation4228.6%57.1%
A98Dutch, Ilyin-Genevsky variation with Qc23826.3%52.6%
A99Dutch, Ilyin-Genevsky variation with b39234.8%64.1%
A97Dutch, Ilyin-Genevsky, Winter variation7936.7%63.9%
A80Dutch, Korchnoi attack2025.0%42.5%
A80Dutch, Krejcik gambit26534.3%54.2%
A86Dutch, Leningrad variation15533.5%56.1%
A81Dutch, Leningrad, Basman system450.0%75.0%
A81Dutch, Leningrad, Karlsbad variation650.0%58.3%
A87Dutch, Leningrad, main variation32439.2%55.7%
A89Dutch, Leningrad, main variation with Nc636836.1%64.0%
A88Dutch, Leningrad, main variation with c683039.2%57.4%
A80Dutch, Manhattan (Alapin, Ulvestad) variation1741.2%61.8%
A82Dutch, Staunton gambit10536.2%35.2%
A84Dutch, Staunton gambit deferred955.6%27.8%
A83Dutch, Staunton gambit, Alekhine variation333.3%50.0%
A83Dutch, Staunton gambit, Chigorin variation7231.9%53.5%
A83Dutch, Staunton gambit, Lasker variation1353.8%42.3%
A83Dutch, Staunton gambit, Nimzovich variation20.0%0.0%
A83Dutch, Staunton gambit, Staunton's line13135.9%50.0%
A82Dutch, Staunton gambit, Tartakower variation616.7%41.7%
A96Dutch, classical variation20534.6%62.2%
A92Dutch, stonewall variation7647.4%59.2%
A94Dutch, stonewall with Ba34551.1%56.7%
A92Dutch, stonewall with Nc31729.4%44.1%
A95Dutch, stonewall with Nc322529.8%58.4%
A93Dutch, stonewall, Botwinnik variation10133.7%61.4%
A95Dutch, stonewall: Chekhover variation1100.0%50.0%
A90Dutch-Indian, Alekhine variation4537.8%56.7%
E10Dzindzikhashvili defence7152.1%58.5%
A10English opening253638.0%55.0%
A13English opening182636.7%51.5%
A15English opening1060043.3%53.5%
A16English opening124135.9%53.0%
A17English opening21338.0%53.3%
A20English opening534638.2%54.4%
A21English opening138333.9%54.6%
A22English opening70536.7%51.1%
A13English opening, Agincourt variation121240.4%54.0%
A15English, 1...Nf6 (Anglo-Indian defense)108839.6%55.2%
A10English, Adorjan defence42537.9%53.8%
A10English, Anglo-Dutch defense64933.0%52.7%
A16English, Anglo-Gruenfeld defense23642.8%53.2%
A16English, Anglo-Gruenfeld defense, Korchnoi variation8836.4%58.0%
A16English, Anglo-Gruenfeld, Czech defense16633.7%63.9%
A16English, Anglo-Gruenfeld, Smyslov defense15431.8%55.5%
A22English, Bellon gambit1136.4%63.6%
A12English, Bled variation1643.8%59.4%
A26English, Botvinnik system30438.2%52.6%
A28English, Bradley Beach variation5221.2%37.5%
A24English, Bremen system with ...g615641.7%48.4%
A23English, Bremen system, Keres variation57841.3%48.4%
A22English, Bremen, Smyslov system146839.0%48.5%
A22English, Bremen, reverse dragon65240.6%50.5%
A12English, Capablanca's variation6835.3%47.1%
A22English, Carls' Bremen system37540.3%54.8%
A11English, Caro-Kann defensive system125540.2%54.2%
A12English, Caro-Kann defensive system19137.7%47.6%
A12English, Caro-Kann defensive system, Bogolyubov variation8248.8%53.7%
A10English, Jaenisch gambit20.0%100.0%
A21English, Keres variation1030.0%45.0%
A21English, Kramnik-Shirov counterattack193241.1%52.4%
A13English, Kurajica defence6829.4%58.8%
A12English, London defensive system12441.9%51.6%
A18English, Mikenas-Carls variation12745.7%55.9%
A18English, Mikenas-Carls, Flohr variation31238.5%58.7%
A18English, Mikenas-Carls, Kevitz variation2227.3%45.5%
A19English, Mikenas-Carls, Sicilian variation34642.2%54.0%
A28English, Nenarokov variation12040.0%51.7%
A13English, Neo-Catalan69441.2%53.0%
A13English, Neo-Catalan accepted107945.8%56.3%
A14English, Neo-Catalan declined77843.7%54.1%
A12English, New York (London) defensive system3452.9%44.1%
A17English, Nimzo-English opening169539.4%53.5%
A20English, Nimzovich variation6839.7%58.1%
A20English, Nimzovich, Flohr variation15338.6%45.4%
A17English, Queens Indian formation22336.8%60.1%
A17English, Queens Indian, Romanishin variation5827.6%58.6%
A13English, Romanishin gambit25141.4%56.2%
A25English, Sicilian reversed71634.4%52.8%
A21English, Smyslov defence3630.6%59.7%
A14English, Symmetrical, Keres defence51747.6%57.1%
A12English, Torre defensive system4042.5%58.8%
A21English, Troeger defence12929.5%54.3%
A13English, Wimpey system11742.7%51.3%
A25English, closed system72534.1%54.0%
A26English, closed system29737.4%51.7%
A25English, closed system (without ...d6)11927.7%55.0%
A25English, closed, 5.Rb142439.9%52.5%
A25English, closed, 5.Rb1 Taimanov variation20.0%50.0%
A25English, closed, Hort variation3636.1%54.2%
A25English, closed, Taimanov variation2010.0%65.0%
A28English, four knights system34144.0%50.7%
A28English, four knights, 4.e396536.4%51.7%
A28English, four knights, Capablanca variation41837.6%54.4%
A28English, four knights, Marini variation78439.8%50.9%
A28English, four knights, Nimzovich variation48334.8%54.0%
A28English, four knights, Romanishin variation44149.9%52.8%
A28English, four knights, Stean variation8342.2%59.6%
A29English, four knights, kingside fianchetto594341.0%51.9%
A30English, symmetrical variation286439.8%54.6%
A32English, symmetrical variation35142.2%57.5%
A33English, symmetrical variation146147.9%54.3%
A34English, symmetrical variation94639.4%54.5%
A35English, symmetrical variation21834.9%51.8%
A36English, symmetrical variation11337.2%54.9%
A37English, symmetrical variation93340.7%49.9%
A38English, symmetrical variation51345.0%55.8%
A31English, symmetrical, Benoni formation90140.7%55.9%
A36English, symmetrical, Botvinnik system15534.2%51.3%
A36English, symmetrical, Botvinnik system reversed7139.4%53.5%
A37English, symmetrical, Botvinnik system reversed69637.6%50.6%
A33English, symmetrical, Geller variation58938.9%54.2%
A34English, symmetrical, Rubinstein system37538.4%52.8%
A35English, symmetrical, four knights system198243.7%53.5%
A30English, symmetrical, hedgehog system257946.8%56.0%
A30English, symmetrical, hedgehog, flexible formation17643.2%54.5%
A38English, symmetrical, main line with b31100.0%50.0%
A38English, symmetrical, main line with d314247.9%53.5%
A39English, symmetrical, main line with d441641.6%57.6%
A34English, symmetrical, three knights system111842.3%55.0%
A27English, three knights system51234.4%52.7%
A36English, ultra-symmetrical variation122738.7%52.7%
C51Evans counter-gambit250.0%75.0%
C51Evans gambit450.0%75.0%
C52Evans gambit28139.1%47.0%
C51Evans gambit declined2015.0%57.5%
C51Evans gambit declined, 5.a416341.7%45.4%
C51Evans gambit declined, Lange variation20.0%0.0%
C51Evans gambit declined, Showalter variation2642.3%51.9%
C51Evans gambit, 5...Be73636.1%56.9%
C52Evans gambit, Alapin-Steinitz variation250.0%25.0%
C51Evans gambit, Cordel variation7552.0%44.7%
C51Evans gambit, Fraser attack20.0%100.0%
C51Evans gambit, Goering attack10.0%100.0%
C52Evans gambit, Lasker defence616.7%25.0%
C52Evans gambit, Leonhardt variation250.0%25.0%
C52Evans gambit, Levenfish variation616.7%25.0%
C51Evans gambit, Morphy attack2040.0%55.0%
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 variation19635.2%50.3%
C52Evans gambit, Tartakower attack7044.3%43.6%
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 variation1921.1%47.4%
C49Four knights6454.7%49.2%
C46Four knights game59943.7%50.1%
C48Four knights, Bardeleben variation850.0%50.0%
C47Four knights, Belgrade gambit10846.3%54.6%
C49Four knights, Gunsberg counter-attack1100.0%50.0%
C46Four knights, Gunsberg variation8647.7%50.6%
C46Four knights, Italian variation16842.3%48.5%
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 variation1643.8%65.6%
C48Four knights, Rubinstein counter-gambit101839.5%52.8%
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 variation5940.7%50.8%
C48Four knights, Rubinstein counter-gambit, exchange variation14465.3%52.1%
C46Four knights, Schultze-Mueller gambit30.0%33.3%
C47Four knights, Scotch variation1315.4%61.5%
C47Four knights, Scotch, 4...exd446749.3%53.7%
C47Four knights, Scotch, Krause variation3537.1%64.3%
C48Four knights, Spanish variation22451.3%56.5%
C48Four knights, Spanish, classical defence17244.8%50.3%
C48Four knights, Spielmann variation366.7%33.3%
C49Four knights, Svenonius variation366.7%66.7%
C49Four knights, double Ruy Lopez6342.9%62.7%
C49Four knights, symmetrical variation18942.3%55.6%
C49Four knights, symmetrical, Blake variation2100.0%50.0%
C49Four knights, symmetrical, Capablanca variation2259.1%61.4%
C49Four knights, symmetrical, Maroczy system5347.2%51.9%
C49Four knights, symmetrical, Metger unpin32736.7%51.1%
C49Four knights, symmetrical, Pillsbury variation4259.5%48.8%
C49Four knights, symmetrical, Tarrasch variation1650.0%50.0%
C00French defence51033.9%57.4%
C11French defence15141.7%54.6%
C00French defence, Steiner variation73443.5%51.3%
C00French, Alapin variation650.0%75.0%
C13French, Albin-Alekhine-Chatard attack25730.4%55.3%
C13French, Albin-Alekhine-Chatard attack, Breyer variation7240.3%66.0%
C13French, Albin-Alekhine-Chatard attack, Maroczy variation1428.6%64.3%
C13French, Albin-Alekhine-Chatard attack, Spielmann variation5940.7%69.5%
C13French, Albin-Alekhine-Chatard attack, Teichmann variation250.0%75.0%
C11French, Burn variation496444.2%52.9%
C00French, Chigorin variation77432.7%51.2%
C10French, Fort Knox variation59440.2%57.5%
C10French, Frere (Becker) variation1741.2%61.8%
C11French, Henneberger variation1338.5%50.0%
C00French, King's Indian attack207037.4%51.2%
C00French, Labourdonnais variation21832.1%45.4%
C12French, MacCutcheon variation10942.2%49.5%
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) variation5326.4%64.2%
C12French, MacCutcheon, Duras variation425.0%62.5%
C12French, MacCutcheon, Grigoriev variation2240.9%56.8%
C12French, MacCutcheon, Janowski variation13637.5%57.7%
C12French, MacCutcheon, Lasker variation20327.6%59.1%
C12French, MacCutcheon, Lasker variation, 8...g637235.8%59.5%
C12French, MacCutcheon, Tartakower variation20.0%100.0%
C12French, MacCutcheon, advance variation1526.7%20.0%
C10French, Marshall variation250.0%25.0%
C10French, Paulsen variation63533.5%58.3%
C00French, Pelikan variation6435.9%52.3%
C00French, Reti (Spielmann) variation16641.6%50.3%
C00French, Reversed Philidor formation1136.4%63.6%
C10French, Rubinstein variation211548.7%55.5%
C10French, Rubinstein, Capablanca line771.4%50.0%
C00French, Schlechter variation17241.9%49.4%
C00French, Steinitz attack911.1%27.8%
C11French, Steinitz variation95338.5%54.7%
C11French, Steinitz, Boleslavsky variation327735.5%57.3%
C11French, Steinitz, Bradford attack1100.0%50.0%
C11French, Steinitz, Gledhill attack11633.6%54.7%
C11French, Swiss variation4247.6%57.1%
C03French, Tarrasch200244.7%56.7%
C05French, Tarrasch, Botvinnik variation4531.1%64.4%
C07French, Tarrasch, Eliskases variation11547.8%53.5%
C04French, Tarrasch, Guimard main line33729.7%59.6%
C03French, Tarrasch, Guimard variation6229.0%66.1%
C06French, Tarrasch, Leningrad variation1717.6%85.3%
C05French, Tarrasch, closed variation98131.4%60.6%
C06French, Tarrasch, closed variation, main line98937.7%59.6%
C07French, Tarrasch, open variation351647.6%53.6%
C09French, Tarrasch, open variation, main line104349.2%56.8%
C08French, Tarrasch, open, 4.ed ed123750.3%54.6%
C00French, Two knights variation22338.6%51.1%
C15French, Winawer (Nimzovich) variation72742.0%55.8%
C15French, Winawer, Alekhine (Maroczy) gambit17338.2%55.5%
C15French, Winawer, Alekhine gambit20.0%50.0%
C15French, Winawer, Alekhine gambit, Kan variation4643.5%47.8%
C15French, Winawer, Kondratiyev variation1100.0%50.0%
C16French, Winawer, Petrosian variation19831.8%55.3%
C16French, Winawer, advance variation74134.8%57.6%
C17French, Winawer, advance variation5641.1%59.8%
C18French, Winawer, advance variation45126.8%63.3%
C17French, Winawer, advance, 5.a336431.9%63.5%
C19French, Winawer, advance, 6...Ne729835.6%57.0%
C17French, Winawer, advance, Bogolyubov variation35040.0%51.1%
C17French, Winawer, advance, Rauzer variation837.5%68.8%
C17French, Winawer, advance, Russian variation5438.9%52.8%
C19French, Winawer, advance, Smyslov variation14926.8%61.1%
C19French, Winawer, advance, poisoned pawn variation245633.6%60.9%
C19French, Winawer, advance, poisoned pawn, Euwe-Gligoric variation30.0%33.3%
C19French, Winawer, advance, poisoned pawn, Konstantinopolsky variation57630.0%62.2%
C19French, Winawer, advance, positional main line102430.8%57.5%
C18French, Winawer, classical variation28433.5%58.3%
C15French, Winawer, fingerslip variation3240.6%32.8%
C00French, Wing gambit3444.1%63.2%
C02French, advance variation113133.0%55.7%
C02French, advance, Euwe variation127936.1%54.1%
C02French, advance, Milner-Barry gambit9833.7%46.4%
C02French, advance, Nimzovich system9531.6%45.3%
C02French, advance, Nimzovich variation742.9%50.0%
C02French, advance, Paulsen attack171433.8%54.8%
C02French, advance, Steinitz variation35833.2%54.1%
C02French, advance, Wade variation32939.2%57.0%
C13French, classical2842.9%42.9%
C14French, classical variation425.0%12.5%
C14French, classical, Alapin variation8746.0%54.0%
C13French, classical, Anderssen variation1127.3%40.9%
C13French, classical, Anderssen-Richter variation825.0%50.0%
C13French, classical, Frankfurt variation837.5%81.3%
C14French, classical, Pollock variation933.3%38.9%
C14French, classical, Rubinstein variation3336.4%60.6%
C14French, classical, Stahlberg variation650.0%58.3%
C14French, classical, Steinitz variation68235.5%57.8%
C14French, classical, Tarrasch variation1010.0%55.0%
C13French, classical, Tartakower variation2437.5%47.9%
C13French, classical, Vistaneckis (Nimzovich) variation90.0%66.7%
C01French, exchange variation132344.4%53.8%
C01French, exchange, Bogolyubov variation333.3%50.0%
C01French, exchange, Svenonius variation3537.1%55.7%
C50Giuoco Pianissimo154039.0%53.1%
C50Giuoco Pianissimo, Canal variation18143.6%52.8%
C50Giuoco Pianissimo, Italian four knights variation37237.6%51.3%
C50Giuoco Piano56040.0%52.7%
C53Giuoco Piano192438.5%52.8%
C54Giuoco Piano17853.4%52.5%
C53Giuoco Piano, Anderssen variation1957.9%39.5%
C53Giuoco Piano, Bird's attack13932.4%49.3%
C53Giuoco Piano, LaBourdonnais variation1127.3%59.1%
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 variation3636.1%59.7%
C53Giuoco Piano, close variation2835.7%71.4%
C50Giuoco Piano, four knights variation5738.6%52.6%
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 defence77447.8%54.5%
D99Gruenfeld defence, Smyslov, Yugoslav variation1127.3%50.0%
D99Gruenfeld defence, Smyslov, main line16439.6%58.8%
D93Gruenfeld with Bf4 e327650.0%52.2%
D94Gruenfeld with e3 Bd32040.0%55.0%
D95Gruenfeld with e3 & Qb31844.4%61.1%
D82Gruenfeld, 4.Bf452145.5%53.1%
D92Gruenfeld, 5.Bf466044.8%56.7%
D91Gruenfeld, 5.Bg585939.2%48.3%
D94Gruenfeld, 5.e341045.1%57.9%
D95Gruenfeld, Botvinnik variation6642.4%51.5%
D94Gruenfeld, Flohr defence1850.0%58.3%
D90Gruenfeld, Flohr variation26538.9%55.7%
D83Gruenfeld, Gruenfeld gambit1931.6%68.4%
D84Gruenfeld, Gruenfeld gambit accepted5750.9%55.3%
D83Gruenfeld, Gruenfeld gambit, Botvinnik variation1573.3%63.3%
D83Gruenfeld, Gruenfeld gambit, Capablanca variation21445.8%57.5%
D80Gruenfeld, Lundin variation10.0%0.0%
D94Gruenfeld, Makogonov variation8450.0%47.6%
D94Gruenfeld, Opovcensky variation14243.0%54.6%
D81Gruenfeld, Russian variation35144.4%62.7%
D96Gruenfeld, Russian variation22142.1%55.0%
D97Gruenfeld, Russian variation with e42931.0%60.3%
D97Gruenfeld, Russian, Alekhine (Hungarian) variation159244.2%51.2%
D97Gruenfeld, Russian, Byrne (Simagin) variation12037.5%58.8%
D98Gruenfeld, Russian, Keres variation1435.7%46.4%
D97Gruenfeld, Russian, Levenfish variation1225.0%70.8%
D97Gruenfeld, Russian, Prins variation43943.1%57.5%
D98Gruenfeld, Russian, Smyslov variation24040.8%60.4%
D97Gruenfeld, Russian, Szabo (Boleslavsky) variation21543.3%59.3%
D90Gruenfeld, Schlechter variation2330.4%41.3%
D94Gruenfeld, Smyslov defence15946.5%57.2%
D88Gruenfeld, Spassky variation, main line, 10...cd, 11.cd19842.4%61.1%
D89Gruenfeld, Spassky variation, main line, 13.Bd37038.6%49.3%
D80Gruenfeld, Stockholm variation67343.5%54.2%
D90Gruenfeld, Three knights variation52648.1%54.8%
D85Gruenfeld, exchange variation271748.1%56.5%
D86Gruenfeld, exchange, Larsen variation30.0%66.7%
D87Gruenfeld, exchange, Seville variation7754.5%62.3%
D86Gruenfeld, exchange, Simagin's improved variation10339.8%51.0%
D86Gruenfeld, exchange, Simagin's lesser variation4738.3%59.6%
D89Gruenfeld, exchange, Sokolsky variation850.0%37.5%
D87Gruenfeld, exchange, Spassky variation50342.7%55.2%
D86Gruenfeld, exchange, classical variation104245.6%55.3%
D85Gruenfeld, modern exchange variation306846.5%55.9%
C40Gunderam defence7129.6%69.7%
C21Halasz gambit450.0%50.0%
A43Hawk (Habichd) defence366.7%33.3%
C50Hungarian defence16639.8%49.4%
C44Inverted Hanham2832.1%41.1%
C44Inverted Hungarian2245.5%59.1%
C36KGA, Abbazia defence (classical defence, modern defence[!])4533.3%67.8%
C36KGA, Abbazia defence, modern variation22943.2%43.9%
C39KGA, Allgaier, Thorold variation10.0%0.0%
C39KGA, Allgaier, Walker attack10.0%0.0%
C34KGA, Becker defence3342.4%45.5%
C37KGA, Blachly gambit2437.5%31.3%
C34KGA, Bonsch-Osmolovsky variation2832.1%55.4%
C33KGA, Breyer gambit333.3%50.0%
C33KGA, Carrera (Basman) gambit10.0%100.0%
C37KGA, Cochrane gambit333.3%50.0%
C35KGA, Cunningham defence5637.5%49.1%
C35KGA, Cunningham, Euwe defence1827.8%58.3%
C34KGA, Fischer defence13231.8%46.2%
C34KGA, Gianutio counter-gambit2100.0%50.0%
C38KGA, Hanstein gambit837.5%43.8%
C33KGA, Keres (Mason-Steinitz) gambit1450.0%32.1%
C39KGA, Kieseritsky, Berlin defence5639.3%41.1%
C39KGA, Kieseritsky, Berlin defence, 6.Bc44131.7%35.4%
C39KGA, Kieseritsky, Brentano (Campbell) defence10.0%100.0%
C39KGA, Kieseritsky, Brentano defence10.0%100.0%
C39KGA, Kieseritsky, Kolisch defence7542.7%44.0%
C39KGA, Kieseritsky, Neumann defence1163.6%68.2%
C39KGA, Kieseritsky, Paulsen defence825.0%37.5%
C39KGA, Kieseritsky, Rice gambit1723.5%29.4%
C39KGA, Kieseritsky, Salvio (Rosenthal) defence4951.0%39.8%
C39KGA, Kieseritsky, long whip (Stockwhip, classical) defence540.0%40.0%
C37KGA, King's knight's gambit1369.2%65.4%
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 gambit128.3%29.2%
C37KGA, Quaade gambit933.3%27.8%
C37KGA, Rosentreter gambit875.0%37.5%
C37KGA, Salvio gambit250.0%75.0%
C37KGA, Salvio gambit, Anderssen counter-attack50.0%60.0%
C34KGA, Schallop defence2339.1%67.4%
C37KGA, Silberschmidt gambit1100.0%50.0%
C33KGA, bishop's gambit5433.3%46.3%
C33KGA, bishop's gambit, Bledow variation3119.4%32.3%
C33KGA, bishop's gambit, Boden defence333.3%16.7%
C33KGA, bishop's gambit, Bogolyubov variation1030.0%25.0%
C33KGA, bishop's gambit, Cozio (Morphy) defence450.0%75.0%
C33KGA, bishop's gambit, Gifford variation333.3%50.0%
C33KGA, bishop's gambit, Jaenisch variation10442.3%48.1%
C33KGA, bishop's gambit, Lopez-Gianutio counter-gambit425.0%62.5%
C33KGA, bishop's gambit, Maurian defence771.4%50.0%
C33KGA, bishop's gambit, Morphy variation1926.3%60.5%
C33KGA, bishop's gambit, Paulsen attack450.0%50.0%
C33KGA, bishop's gambit, Ruy Lopez defence1442.9%50.0%
C33KGA, bishop's gambit, Steinitz defence1741.2%38.2%
C33KGA, bishop's gambit, classical defence10.0%0.0%
C30KGD, 2...Nf62828.6%60.7%
C31KGD, Falkbeer counter-gambit3046.7%53.3%
C31KGD, Falkbeer, 3...e4683.3%58.3%
C31KGD, Falkbeer, 4.d3862.5%68.8%
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, Nimzovich variation560.0%70.0%
C32KGD, Falkbeer, Reti variation450.0%50.0%
C31KGD, Falkbeer, Rubinstein variation520.0%70.0%
C31KGD, Falkbeer, Tartakower variation650.0%58.3%
C32KGD, Falkbeer, main line, 7...Bf5616.7%91.7%
C30KGD, Keene's defence1154.5%63.6%
C30KGD, Mafia defence837.5%68.8%
C31KGD, Nimzovich counter-gambit2751.9%63.0%
C30KGD, Norwalde variation147.1%82.1%
C30KGD, classical counter-gambit10.0%0.0%
C30KGD, classical variation5226.9%59.6%
C30KGD, classical, 4.c34129.3%63.4%
C30KGD, classical, Marshall attack4100.0%50.0%
C30KGD, classical, Reti variation1100.0%50.0%
C30KGD, classical, Svenonius variation1100.0%50.0%
B00KP, Colorado counter425.0%62.5%
C20KP, Indian opening6238.7%43.5%
C20KP, King's head opening250.0%25.0%
C20KP, Lopez opening1233.3%33.3%
C20KP, Mengarini's opening2040.0%25.0%
C20KP, Napoleon's opening633.3%50.0%
B00KP, Nimzovich defence47633.4%60.2%
B00KP, Nimzovich defence, Bogolyubov variation10032.0%59.0%
C20KP, Patzer opening2227.3%31.8%
A50Kevitz-Trajkovich defence33538.2%56.7%
E60King's Indian defence65636.3%56.7%
E61King's Indian defence, 3.Nc378837.4%55.6%
E72King's Indian with e4 & g35633.9%56.3%
E60King's Indian, 3.Nf3265739.5%57.7%
E60King's Indian, 3.g3149642.3%56.5%
E60King's Indian, 3.g3, counterthrust variation1127.3%31.8%
E70King's Indian, 4.e487733.3%58.6%
E73King's Indian, 5.Be23339.4%56.1%
E90King's Indian, 5.Nf381433.2%56.6%
E91King's Indian, 6.Be258633.3%64.9%
E92King's Indian, Andersson variation28154.1%49.5%
E60King's Indian, Anti-Gruenfeld4434.1%60.2%
E73King's Indian, Averbakh system93333.4%54.8%
E74King's Indian, Averbakh, 6...c525335.2%55.5%
E75King's Indian, Averbakh, main line5225.0%58.7%
E60King's Indian, Danube gambit450.0%75.0%
A48King's Indian, East Indian defence79238.5%51.8%
E76King's Indian, Four pawns attack22138.0%59.7%
E77King's Indian, Four pawns attack10932.1%58.3%
E77King's Indian, Four pawns attack, 6.Be21353.8%50.0%
E77King's Indian, Four pawns attack, Florentine gambit2100.0%50.0%
E76King's Indian, Four pawns attack, dynamic line16137.9%51.9%
E79King's Indian, Four pawns attack, main line825.0%62.5%
E78King's Indian, Four pawns attack, with Be2 and Nf3540.0%60.0%
E92King's Indian, Gligoric-Taimanov system142933.9%58.7%
E91King's Indian, Kazakh variation29236.3%55.5%
E70King's Indian, Kramer system32429.9%57.9%
E90King's Indian, Larsen variation8440.5%59.5%
A48King's Indian, London system102239.3%53.2%
E71King's Indian, Makagonov system (5.h3)68534.7%59.9%
E92King's Indian, Petrosian system9828.6%52.0%
E92King's Indian, Petrosian system, Stein variation55632.9%53.9%
E93King's Indian, Petrosian system, main line8336.1%50.6%
E72King's Indian, Pomar system1030.0%55.0%
E80King's Indian, Saemisch variation32434.0%59.0%
E81King's Indian, Saemisch, 5...O-O199634.0%55.2%
E83King's Indian, Saemisch, 6...Nc66829.4%44.1%
E81King's Indian, Saemisch, Byrne variation7740.3%53.9%
E83King's Indian, Saemisch, Panno formation19442.8%57.0%
E84King's Indian, Saemisch, Panno main line40537.5%52.6%
E83King's Indian, Saemisch, Ruban variation1136.4%45.5%
E82King's Indian, Saemisch, double fianchetto variation9232.6%58.7%
E89King's Indian, Saemisch, orthodox main line2832.1%62.5%
E85King's Indian, Saemisch, orthodox variation5635.7%51.8%
E86King's Indian, Saemisch, orthodox, 7.Nge2 c634129.0%53.2%
E87King's Indian, Saemisch, orthodox, 7.d525026.8%59.4%
E88King's Indian, Saemisch, orthodox, 7.d5 c631132.8%58.2%
E87King's Indian, Saemisch, orthodox, Bronstein variation1100.0%50.0%
E73King's Indian, Semi-Averbakh system3036.7%51.7%
E61King's Indian, Smyslov system8138.3%53.7%
A48King's Indian, Torre attack153238.7%49.5%
E90King's Indian, Zinnowitz variation3246.9%54.7%
E70King's Indian, accelerated Averbakh system10933.0%55.0%
E92King's Indian, classical variation2536.0%38.0%
E62King's Indian, fianchetto variation6235.5%50.0%
E62King's Indian, fianchetto with ...Nc622834.2%54.8%
E67King's Indian, fianchetto with ...Nd79335.5%55.4%
A49King's Indian, fianchetto without c4105940.0%56.8%
E62King's Indian, fianchetto, Kavalek (Bronstein) variation53632.6%60.5%
E62King's Indian, fianchetto, Larsen system27141.3%62.0%
E63King's Indian, fianchetto, Panno variation211337.9%57.1%
E62King's Indian, fianchetto, Simagin variation8235.4%64.0%
E62King's Indian, fianchetto, Uhlmann (Szabo) variation25732.7%58.8%
E66King's Indian, fianchetto, Yugoslav Panno30633.7%56.7%
E64King's Indian, fianchetto, Yugoslav system9135.2%59.3%
E65King's Indian, fianchetto, Yugoslav, 7.O-O16750.9%52.4%
E69King's Indian, fianchetto, classical main line42733.3%62.1%
E67King's Indian, fianchetto, classical variation48540.2%55.4%
E68King's Indian, fianchetto, classical variation, 8.e4119538.7%59.9%
E62King's Indian, fianchetto, lesser Simagin (Spassky) variation28736.6%60.8%
E94King's Indian, orthodox variation97637.1%54.1%
E94King's Indian, orthodox, 7...Nbd788634.1%60.3%
E95King's Indian, orthodox, 7...Nbd7, 8.Re132835.7%55.6%
E96King's Indian, orthodox, 7...Nbd7, main line4341.9%60.5%
E97King's Indian, orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation)392933.0%56.1%
E98King's Indian, orthodox, Aronin-Taimanov, 9.Ne185226.6%61.0%
E99King's Indian, orthodox, Aronin-Taimanov, Benko attack5523.6%66.4%
E97King's Indian, orthodox, Aronin-Taimanov, bayonet attack124235.1%58.2%
E99King's Indian, orthodox, Aronin-Taimanov, main line2123.8%59.5%
E94King's Indian, orthodox, Donner variation17936.3%60.1%
C30King's gambit9343.0%60.2%
C33King's gambit accepted10.0%0.0%
C40King's knight opening20.0%50.0%
C34King's knight's gambit1136.4%27.3%
C38King's knight's gambit2339.1%28.3%
C20King's pawn game2236.4%54.5%
C44King's pawn game7935.4%51.9%
C50King's pawn game21036.2%59.5%
B00King's pawn opening134736.7%57.5%
C44Konstantinopolsky opening850.0%62.5%
A00Lasker simul special333.3%50.0%
C40Latvian counter-gambit7833.3%61.5%
C40Latvian gambit, 3.Bc4785.7%42.9%
C40Latvian, Fraser defence1118.2%54.5%
C40Latvian, Polerio variation2227.3%40.9%
B00Lemming defence837.5%56.3%
C00Lengfellner system520.0%90.0%
D00Levitsky attack (Queen's bishop attack)183636.8%52.4%
A00Mieses opening13333.8%53.0%
A40Modern defence87037.4%57.8%
A41Modern defence7634.2%56.6%
A42Modern defence, Averbakh system38433.9%58.9%
A42Modern defence, Averbakh system, Kotov variation11224.1%65.6%
A42Modern defence, Averbakh system, Randspringer variation90.0%77.8%
A03Mujannah opening450.0%25.0%
D70Neo-Gruenfeld (Kemeri) defence4238.1%54.8%
D70Neo-Gruenfeld defence20438.2%55.4%
D73Neo-Gruenfeld, 5.Nf379150.9%55.4%
D71Neo-Gruenfeld, 5.cd28946.7%56.2%
D72Neo-Gruenfeld, 5.cd, main line18634.4%60.8%
D77Neo-Gruenfeld, 6.O-O67546.2%54.2%
D78Neo-Gruenfeld, 6.O-O c674242.2%54.6%
D79Neo-Gruenfeld, 6.O-O, main line46348.4%54.6%
D74Neo-Gruenfeld, 6.cd Nxd5, 7.O-O21144.5%56.9%
D76Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb650044.4%57.2%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc39248.9%58.2%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.dc1526.7%73.3%
E00Neo-Indian (Seirawan) attack17031.8%52.9%
E20Nimzo-Indian defence12650.8%51.6%
E40Nimzo-Indian, 4.e313229.5%58.0%
E46Nimzo-Indian, 4.e3 O-O6535.4%57.7%
E47Nimzo-Indian, 4.e3 O-O, 5.Bd353048.3%51.9%
E48Nimzo-Indian, 4.e3 O-O, 5.Bd3 d543742.8%49.1%
E41Nimzo-Indian, 4.e3 c569844.8%54.7%
E42Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein)58545.0%54.6%
E51Nimzo-Indian, 4.e3 e8g8, 5.Nf3 d7d514049.3%48.9%
E50Nimzo-Indian, 4.e3 e8g8, 5.Nf3, without ...d516841.1%50.9%
E49Nimzo-Indian, 4.e3, Botvinnik system19446.4%56.2%
E45Nimzo-Indian, 4.e3, Bronstein (Byrne) variation19451.0%56.4%
E53Nimzo-Indian, 4.e3, Gligoric system with 7...Nbd75360.4%50.9%
E54Nimzo-Indian, 4.e3, Gligoric system with 7...dc118948.9%55.6%
E55Nimzo-Indian, 4.e3, Gligoric system, Bronstein variation180848.0%55.5%
E54Nimzo-Indian, 4.e3, Gligoric system, Smyslov variation1968.4%65.8%
E53Nimzo-Indian, 4.e3, Keres variation9636.5%46.4%
E51Nimzo-Indian, 4.e3, Ragozin variation2339.1%67.4%
E40Nimzo-Indian, 4.e3, Taimanov variation7635.5%62.5%
E59Nimzo-Indian, 4.e3, main line73643.6%53.5%
E52Nimzo-Indian, 4.e3, main line with ...b644440.1%53.2%
E53Nimzo-Indian, 4.e3, main line with ...c537240.6%54.4%
E56Nimzo-Indian, 4.e3, main line with 7...Nc633551.9%56.4%
E58Nimzo-Indian, 4.e3, main line with 8...Bxc3141644.9%53.0%
E57Nimzo-Indian, 4.e3, main line with 8...dc and 9...cd333.3%16.7%
E43Nimzo-Indian, Fischer variation56736.3%53.8%
E44Nimzo-Indian, Fischer variation, 5.Ne235237.8%55.0%
E20Nimzo-Indian, Kmoch variation71238.8%53.7%
E30Nimzo-Indian, Leningrad variation59435.9%47.9%
E30Nimzo-Indian, Leningrad, ...b5 gambit5930.5%47.5%
E31Nimzo-Indian, Leningrad, main line20430.4%51.0%
E20Nimzo-Indian, Mikenas attack666.7%50.0%
E46Nimzo-Indian, Reshevsky variation87644.1%51.8%
E20Nimzo-Indian, Romanishin-Kasparov (Steiner) system40546.4%53.8%
E24Nimzo-Indian, Saemisch variation17347.4%47.4%
E25Nimzo-Indian, Saemisch variation13043.1%52.3%
E26Nimzo-Indian, Saemisch variation6839.7%58.1%
E27Nimzo-Indian, Saemisch variation4746.8%40.4%
E28Nimzo-Indian, Saemisch variation9525.3%52.6%
E24Nimzo-Indian, Saemisch, Botvinnik variation4634.8%41.3%
E29Nimzo-Indian, Saemisch, Capablanca variation2638.5%42.3%
E25Nimzo-Indian, Saemisch, Keres variation28346.6%53.4%
E26Nimzo-Indian, Saemisch, O'Kelly variation2941.4%51.7%
E25Nimzo-Indian, Saemisch, Romanovsky variation8646.5%50.0%
E29Nimzo-Indian, Saemisch, main line7839.7%55.8%
E46Nimzo-Indian, Simagin variation11939.5%49.2%
E22Nimzo-Indian, Spielmann variation10644.3%50.5%
E23Nimzo-Indian, Spielmann, 4...c5, 5.dc Nc64143.9%51.2%
E23Nimzo-Indian, Spielmann, Karlsbad variation1540.0%40.0%
E23Nimzo-Indian, Spielmann, San Remo variation757.1%71.4%
E23Nimzo-Indian, Spielmann, Staahlberg variation20.0%100.0%
E32Nimzo-Indian, classical variation607342.3%53.8%
E33Nimzo-Indian, classical, 4...Nc67647.4%59.2%
E38Nimzo-Indian, classical, 4...c557837.7%60.4%
E32Nimzo-Indian, classical, Adorjan gambit9943.4%50.0%
E36Nimzo-Indian, classical, Botvinnik variation1241.7%62.5%
E33Nimzo-Indian, classical, Milner-Barry (Zurich) variation27438.0%58.8%
E34Nimzo-Indian, classical, Noa variation74152.9%54.3%
E36Nimzo-Indian, classical, Noa variation, 5.a327545.8%52.0%
E35Nimzo-Indian, classical, Noa variation, 5.cd ed51845.2%50.6%
E37Nimzo-Indian, classical, Noa variation, main line, 7.Qc230946.3%62.3%
E39Nimzo-Indian, classical, Pirc variation92939.1%55.3%
E37Nimzo-Indian, classical, San Remo variation30.0%66.7%
E41Nimzo-Indian, e3, Huebner variation47533.5%51.5%
E21Nimzo-Indian, three knights variation227441.5%54.2%
E21Nimzo-Indian, three knights, Euwe variation2100.0%50.0%
E21Nimzo-Indian, three knights, Korchnoi variation40.0%50.0%
A01Nimzovich-Larsen attack63937.1%52.5%
A01Nimzovich-Larsen attack, Dutch variation1330.8%46.2%
A01Nimzovich-Larsen attack, English variation18235.7%48.6%
A01Nimzovich-Larsen attack, Indian variation25733.1%48.4%
A01Nimzovich-Larsen attack, classical variation105137.3%50.0%
A01Nimzovich-Larsen attack, modern variation292440.3%50.5%
A01Nimzovich-Larsen attack, symmetrical variation65040.9%49.4%
B06Norwegian defence250.0%25.0%
A00Novosibirsk opening2133.3%50.0%
A43Old Benoni defence141635.3%58.5%
A44Old Benoni defence1643.8%65.6%
A43Old Benoni, Franco-Benoni defence10136.6%58.9%
A43Old Benoni, Mujannah formation3138.7%67.7%
A43Old Benoni, Schmid's system2520.0%58.0%
A41Old Indian defence74431.9%55.0%
A53Old Indian defence94338.8%56.3%
A54Old Indian, Dus-Khotimirsky variation922.2%44.4%
A53Old Indian, Janowski variation13432.8%56.7%
A41Old Indian, Tartakower (Wade) variation90235.3%61.0%
A54Old Indian, Ukrainian variation10146.5%55.0%
A54Old Indian, Ukrainian variation, 4.Nf320438.2%57.4%
A55Old Indian, main line41438.2%58.5%
B00Owen defence28134.2%61.6%
A45Paleface attack3234.4%45.3%
C42Petrov three knights game25138.6%57.2%
C42Petrov's defence26144.1%52.3%
C42Petrov, Cochrane gambit6317.5%32.5%
C42Petrov, Cozio (Lasker) attack49848.6%52.6%
C42Petrov, Damiano variation2441.7%50.0%
C42Petrov, French attack560.0%70.0%
C42Petrov, Italian variation6327.0%50.0%
C42Petrov, Kaufmann attack19249.0%49.5%
C42Petrov, Nimzovich attack109845.4%55.1%
C42Petrov, Paulsen attack14940.9%52.0%
C43Petrov, Urusov gambit633.3%83.3%
C42Petrov, classical attack73148.0%56.6%
C42Petrov, classical attack, Berger variation1275.0%54.2%
C42Petrov, classical attack, Chigorin variation56041.3%57.2%
C42Petrov, classical attack, Jaenisch variation162345.9%58.2%
C42Petrov, classical attack, Krause variation757.1%28.6%
C42Petrov, classical attack, Marshall variation94043.6%56.9%
C42Petrov, classical attack, Mason variation11443.0%59.2%
C42Petrov, classical attack, Tarrasch variation250.0%75.0%
C42Petrov, classical attack, close variation13746.0%58.8%
C43Petrov, modern (Steinitz) attack3148.4%56.5%
C43Petrov, modern attack, Bardeleben variation425.0%62.5%
C43Petrov, modern attack, Steinitz variation1100.0%50.0%
C43Petrov, modern attack, Symmetrical variation229345.2%53.4%
C43Petrov, modern attack, Trifunovic variation5345.3%49.1%
C43Petrov, modern attack, main line19646.9%58.2%
C41Philidor's defence23236.2%59.9%
C41Philidor, Hanham variation3638.9%61.1%
C41Philidor, Hanham, Delmar variation450.0%75.0%
C41Philidor, Hanham, Krause variation1258.3%37.5%
C41Philidor, Hanham, Schlechter variation1931.6%73.7%
C41Philidor, Hanham, Steiner variation2138.1%66.7%
C41Philidor, Improved Hanham variation93438.8%56.7%
C41Philidor, Larsen variation3321.2%68.2%
C41Philidor, Lopez counter-gambit20.0%50.0%
C41Philidor, Nimzovich (Jaenisch) variation1838.9%47.2%
C41Philidor, Nimzovich variation4548.9%57.8%
C41Philidor, Nimzovich, Klein variation785.7%57.1%
C41Philidor, Nimzovich, Larobok variation5046.0%33.0%
C41Philidor, Nimzovich, Rellstab variation3043.3%68.3%
C41Philidor, Nimzovich, Sokolsky variation666.7%66.7%
C41Philidor, Nimzovich, Sozin variation742.9%50.0%
C41Philidor, Paulsen attack250.0%25.0%
C41Philidor, Philidor counter-gambit837.5%56.3%
C41Philidor, Philidor counter-gambit, Zukertort variation650.0%75.0%
C41Philidor, Philidor counter-gambit, del Rio attack30.0%66.7%
C41Philidor, Steinitz variation20.0%0.0%
C41Philidor, exchange variation70336.8%58.4%
B07Pirc defence158837.5%56.3%
B07Pirc, 150 attack22937.6%60.7%
B09Pirc, Austrian attack17940.2%60.9%
B09Pirc, Austrian attack, 6.Bd3112239.5%59.9%
B09Pirc, Austrian attack, 6.Be327731.8%57.8%
B09Pirc, Austrian attack, 6.e58744.8%56.9%
B09Pirc, Austrian attack, Ljubojevic variation1442.9%50.0%
B09Pirc, Austrian attack, dragon formation76239.0%58.2%
B07Pirc, Byrne variation33633.3%57.1%
B07Pirc, Chinese variation250.0%25.0%
B07Pirc, Holmov system2441.7%58.3%
B07Pirc, Sveshnikov system29435.7%52.6%
B07Pirc, Ufimtsev-Pytel variation36339.7%59.5%
B07Pirc, bayonet (Mariotti) attack3154.8%56.5%
B08Pirc, classical (two knights) system51938.0%58.5%
B08Pirc, classical system, 5.Be2220538.7%56.9%
B08Pirc, classical, h3 system38138.1%59.2%
A00Polish (Sokolsky) opening165939.1%48.8%
A40Polish defence5046.0%51.0%
A00Polish, Outflank variation11945.4%47.9%
C44Ponziani counter-gambit10743.0%57.9%
C44Ponziani counter-gambit, Cordel variation10.0%0.0%
C44Ponziani opening31234.9%45.7%
C44Ponziani, Caro variation22143.9%49.1%
C44Ponziani, Fraser defence5242.3%65.4%
C44Ponziani, Jaenisch counter-attack206146.5%52.9%
C44Ponziani, Leonhardt variation9635.4%47.9%
C44Ponziani, Reti variation2133.3%59.5%
C44Ponziani, Romanishin variation1631.3%46.9%
C44Ponziani, Steinitz variation45742.2%46.1%
A42Pterodactyl defence32036.9%63.8%
D21QGA, 3.Nf325642.2%57.8%
D20QGA, 3.e4280140.3%56.6%
D26QGA, 4...e626245.4%53.2%
D24QGA, 4.Nc319340.4%50.3%
D25QGA, 4.e310136.6%55.9%
D22QGA, Alekhine defence22441.5%56.5%
D22QGA, Alekhine defence, Alatortsev variation1250.0%41.7%
D21QGA, Alekhine defense, Borisenko-Furman variation2528.0%50.0%
D24QGA, Bogolyubov variation15748.4%56.7%
D21QGA, Ericson variation40.0%25.0%
D25QGA, Flohr variation7030.0%66.4%
D22QGA, Haberditz variation10358.3%51.5%
D25QGA, Janowsky-Larsen variation34938.7%57.7%
D20QGA, Linares variation8235.4%61.6%
D23QGA, Mannheim variation29346.1%52.4%
D25QGA, Smyslov variation9553.7%58.4%
D26QGA, classical variation65451.7%52.9%
D26QGA, classical variation, 6.O-O15747.1%58.0%
D27QGA, classical, 6...a6380150.5%55.1%
D28QGA, classical, 7...b519851.5%56.1%
D28QGA, classical, 7.Qe26350.8%60.3%
D29QGA, classical, 8...Bb730441.4%48.0%
D26QGA, classical, Furman variation10.0%0.0%
D27QGA, classical, Geller variation7255.6%52.8%
D27QGA, classical, Rubinstein variation143247.6%55.8%
D29QGA, classical, Smyslov variation4153.7%46.3%
D26QGA, classical, Steinitz variation4555.6%63.3%
D30QGD78647.7%52.0%
D51QGD1764.7%61.8%
D52QGD12941.1%57.8%
D30QGD Slav27545.5%55.1%
D15QGD Slav accepted8643.0%50.6%
D16QGD Slav accepted, Alapin variation16538.8%66.7%
D10QGD Slav defence371641.1%54.1%
D10QGD Slav defence, Alekhine variation25139.8%55.4%
D10QGD Slav defence, exchange variation141444.7%55.2%
D11QGD Slav, 3.Nf3216741.0%55.8%
D15QGD Slav, 4.Nc3371039.9%54.9%
D11QGD Slav, 4.e3392142.4%55.4%
D12QGD Slav, 4.e3 Bf5292040.4%54.2%
D15QGD Slav, 5.e3 (Alekhine variation)16030.6%55.3%
D12QGD Slav, Amsterdam variation2152.4%45.2%
D11QGD Slav, Breyer variation11945.4%58.8%
D17QGD Slav, Carlsbad variation47137.2%60.4%
D17QGD Slav, Czech defence35948.5%54.6%
D18QGD Slav, Dutch variation26740.8%60.9%
D19QGD Slav, Dutch variation128939.0%57.6%
D19QGD Slav, Dutch variation, main line20840.9%56.5%
D18QGD Slav, Dutch, Lasker variation425.0%87.5%
D19QGD Slav, Dutch, Saemisch variation250.0%25.0%
D17QGD Slav, Krause attack66839.4%58.3%
D15QGD Slav, Schlechter variation27542.5%59.1%
D30QGD Slav, Semmering variation2231.8%47.7%
D15QGD Slav, Slav gambit1822.2%55.6%
D16QGD Slav, Smyslov variation6734.3%59.0%
D16QGD Slav, Soultanbeieff variation39449.7%53.6%
D16QGD Slav, Steiner variation20837.0%63.7%
D15QGD Slav, Suechting variation13032.3%58.5%
D15QGD Slav, Tolush-Geller gambit11828.8%40.7%
D17QGD Slav, Wiesbaden variation60842.4%57.2%
D10QGD Slav, Winawer counter-gambit14232.4%54.2%
D12QGD Slav, exchange variation8938.2%49.4%
D13QGD Slav, exchange variation69046.1%55.5%
D14QGD Slav, exchange variation, 6.Bf4 Bf565549.3%51.4%
D14QGD Slav, exchange, Trifunovic variation20749.8%52.4%
D43QGD semi-Slav658241.3%52.7%
D45QGD semi-Slav, 5...Nd752238.3%53.6%
D44QGD semi-Slav, 5.Bg5 dc14444.4%49.3%
D45QGD semi-Slav, 5.e340640.9%56.4%
D46QGD semi-Slav, 6.Bd33737.8%62.2%
D47QGD semi-Slav, 7.Bc45939.0%53.4%
D46QGD semi-Slav, Bogolyubov variation16043.1%57.2%
D44QGD semi-Slav, Botvinnik system (anti-Meran)7537.3%56.0%
D46QGD semi-Slav, Chigorin defence42344.0%53.9%
D44QGD semi-Slav, Ekstrom variation2646.2%38.5%
D43QGD semi-Slav, Hastings variation520.0%90.0%
D48QGD semi-Slav, Meran205.0%37.5%
D47QGD semi-Slav, Meran variation124249.4%54.8%
D48QGD semi-Slav, Meran, 8...a6137649.6%48.9%
D49QGD semi-Slav, Meran, Blumenfeld variation16245.7%51.2%
D48QGD semi-Slav, Meran, Pirc variation955.6%72.2%
D49QGD semi-Slav, Meran, Rabinovich variation6025.0%44.2%
D49QGD semi-Slav, Meran, Rellstab attack1637.5%62.5%
D48QGD semi-Slav, Meran, Reynolds' variation75039.7%56.1%
D49QGD semi-Slav, Meran, Sozin variation15545.2%45.8%
D49QGD semi-Slav, Meran, Stahlberg variation8041.3%45.6%
D47QGD semi-Slav, Meran, Wade variation682039.5%53.6%
D48QGD semi-Slav, Meran, old main line11235.7%52.7%
D46QGD semi-Slav, Romih variation16936.7%63.9%
D45QGD semi-Slav, Rubinstein (anti-Meran) system1533.3%43.3%
D45QGD semi-Slav, Stoltz variation1141743.6%53.4%
D45QGD semi-Slav, accelerated Meran (Alekhine variation)192944.0%53.8%
D44QGD semi-Slav, anti-Meran gambit75934.9%58.3%
D44QGD semi-Slav, anti-Meran, Alatortsev system1100.0%50.0%
D44QGD semi-Slav, anti-Meran, Lilienthal variation16130.4%66.1%
D44QGD semi-Slav, anti-Meran, Szabo variation2420.8%35.4%
D47QGD semi-Slav, neo-Meran (Lundin variation)28448.2%54.8%
D45QGD semi-Slav, stonewall defence1154.5%54.5%
D35QGD, 3...Nf68740.2%50.0%
D31QGD, 3.Nc376842.3%55.1%
D50QGD, 4.Bg57140.8%54.2%
D53QGD, 4.Bg5 Be793745.3%54.5%
D53QGD, 4.Bg5 Be7, 5.e3 O-O3551.4%51.4%
D51QGD, 4.Bg5 Nbd76741.8%53.7%
D37QGD, 4.Nf3523246.6%52.7%
D51QGD, 5...c67152.1%52.8%
D55QGD, 6.Nf312235.2%57.8%
D31QGD, Alapin variation742.9%64.3%
D08QGD, Albin counter-gambit12142.1%59.1%
D09QGD, Albin counter-gambit, 5.g311342.5%58.4%
D08QGD, Albin counter-gambit, Alapin variation2055.0%57.5%
D08QGD, Albin counter-gambit, Balogh variation520.0%90.0%
D08QGD, Albin counter-gambit, Janowski variation425.0%62.5%
D08QGD, Albin counter-gambit, Lasker trap20.0%50.0%
D51QGD, Alekhine variation40.0%50.0%
D54QGD, Anti-neo-orthodox variation3847.4%47.4%
D50QGD, Been-Koomen variation540.0%20.0%
D52QGD, Cambridge Springs defence3842.1%47.4%
D52QGD, Cambridge Springs defence, 7.cd4136.6%52.4%
D52QGD, Cambridge Springs defence, Argentine variation1931.6%42.1%
D52QGD, Cambridge Springs defence, Bogoljubow variation40047.0%56.3%
D52QGD, Cambridge Springs defence, Capablanca variation3636.1%59.7%
D52QGD, Cambridge Springs defence, Rubinstein variation15939.0%55.3%
D52QGD, Cambridge Springs defence, Yugoslav variation37339.1%56.8%
D50QGD, Canal (Venice) variation20.0%50.0%
D51QGD, Capablanca anti-Cambridge Springs variation1662.5%68.8%
D30QGD, Capablanca variation3531.4%58.6%
D30QGD, Capablanca-Duras variation33646.4%53.3%
D31QGD, Charousek (Petrosian) variation137245.5%52.7%
D07QGD, Chigorin defence72436.0%57.1%
D07QGD, Chigorin defence, Janowski variation8933.7%62.9%
D06QGD, Grau (Sahovic) defence11536.5%60.9%
D35QGD, Harrwitz attack19851.0%55.3%
D30QGD, Hastings variation54248.2%53.0%
D31QGD, Janowski variation13943.2%52.5%
D56QGD, Lasker defence32346.4%53.3%
D57QGD, Lasker defence, Bernstein variation1070.0%45.0%
D56QGD, Lasker defence, Teichmann variation9252.2%50.0%
D57QGD, Lasker defence, main line4957.1%53.1%
D53QGD, Lasker variation425.0%87.5%
D51QGD, Manhattan variation1040.0%70.0%
D06QGD, Marshall defence14043.6%58.9%
D55QGD, Neo-orthodox variation633.3%50.0%
D55QGD, Neo-orthodox variation, 7.Bh413744.5%58.0%
D55QGD, Neo-orthodox variation, 7.Bxf632845.7%51.5%
D60QGD, Orthodox defence10036.0%56.0%
D63QGD, Orthodox defence8846.6%58.5%
D62QGD, Orthodox defence, 7.Qc2 c5, 8.cd (Rubinstein)14450.0%56.9%
D63QGD, Orthodox defence, 7.Rc121335.7%57.7%
D66QGD, Orthodox defence, Bd3 line24047.1%59.0%
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 variation3557.1%54.3%
D66QGD, Orthodox defence, Bd3 line, fianchetto variation742.9%78.6%
D60QGD, Orthodox defence, Botvinnik variation6532.3%50.0%
D63QGD, Orthodox defence, Capablanca variation1100.0%50.0%
D63QGD, Orthodox defence, Pillsbury attack1844.4%66.7%
D60QGD, Orthodox defence, Rauzer variation3844.7%61.8%
D64QGD, Orthodox defence, Rubinstein attack (with Rc1)9644.8%56.8%
D64QGD, Orthodox defence, Rubinstein attack, Gruenfeld variation1421.4%46.4%
D64QGD, Orthodox defence, Rubinstein attack, Karlsbad variation1844.4%33.3%
D64QGD, Orthodox defence, Rubinstein attack, Wolf variation1346.2%46.2%
D65QGD, Orthodox defence, Rubinstein attack, main line1154.5%72.7%
D61QGD, Orthodox defence, Rubinstein variation22043.6%51.4%
D63QGD, Orthodox defence, Swiss (Henneberger) variation8843.2%62.5%
D63QGD, Orthodox defence, Swiss, Karlsbad variation15941.5%54.1%
D68QGD, Orthodox defence, classical variation6947.8%57.2%
D68QGD, Orthodox defence, classical, 13.d1b1 (Maroczy)366.7%33.3%
D68QGD, Orthodox defence, classical, 13.d1c2 (Vidmar)4656.5%58.7%
D69QGD, Orthodox defence, classical, 13.de1553.3%53.3%
D55QGD, Petrosian variation35952.1%53.6%
D38QGD, Ragozin variation387646.7%52.3%
D39QGD, Ragozin, Vienna variation156750.4%51.2%
D50QGD, Semi-Tarrasch1225.0%54.2%
D40QGD, Semi-Tarrasch defence41742.4%54.8%
D40QGD, Semi-Tarrasch defence, Pillsbury variation2835.7%57.1%
D41QGD, Semi-Tarrasch with e314847.3%54.7%
D41QGD, Semi-Tarrasch, 5.cd60247.8%57.6%
D42QGD, Semi-Tarrasch, 7.Bd325543.5%56.7%
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 variation944.4%55.6%
D32QGD, Tarrasch defence30746.9%53.7%
D32QGD, Tarrasch defence, 4.cd ed2236.4%54.5%
D32QGD, Tarrasch defence, Marshall gambit633.3%50.0%
D32QGD, Tarrasch defence, Tarrasch gambit540.0%20.0%
D33QGD, Tarrasch, Folkestone (Swedish) variation4254.8%58.3%
D33QGD, Tarrasch, Prague variation6731.3%54.5%
D34QGD, Tarrasch, Prague variation, 7...Be717243.0%55.8%
D34QGD, Tarrasch, Prague variation, 9.Bg554147.5%57.6%
D34QGD, Tarrasch, Prague variation, Normal position65747.9%56.2%
D34QGD, Tarrasch, Reti variation2860.7%58.9%
D33QGD, Tarrasch, Schlechter-Rubinstein system1435.7%53.6%
D33QGD, Tarrasch, Wagner variation922.2%66.7%
D32QGD, Tarrasch, von Hennig-Schara gambit6241.9%61.3%
D58QGD, Tartakower (Makagonov-Bondarevsky) system492646.4%52.1%
D59QGD, Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd518349.2%47.0%
D59QGD, Tartakower variation11346.0%46.0%
D30QGD, Vienna variation67853.8%52.6%
D37QGD, classical variation (5.Bf4)399644.9%55.2%
D35QGD, exchange variation36843.2%56.4%
D35QGD, exchange, Saemisch variation27547.3%54.5%
D35QGD, exchange, positional line93740.8%54.2%
D35QGD, exchange, positional line, 5...c673741.8%55.0%
D36QGD, exchange, positional line, 6.Qc224841.9%54.8%
D31QGD, semi-Slav95839.9%54.9%
D31QGD, semi-Slav, Abrahams variation12835.2%44.1%
D31QGD, semi-Slav, Junge variation1030.0%35.0%
D31QGD, semi-Slav, Koomen variation955.6%38.9%
D31QGD, semi-Slav, Marshall gambit76043.3%53.8%
D31QGD, semi-Slav, Noteboom variation24939.0%51.6%
D06QGD, symmetrical (Austrian) defence3647.2%56.9%
C40QP counter-gambit (elephant gambit)1560.0%63.3%
C40QP counter-gambit, Maroczy gambit366.7%66.7%
A50Queen's Indian accelerated17548.0%57.7%
A47Queen's Indian defence47939.7%52.4%
E12Queen's Indian defence64142.0%53.7%
E12Queen's Indian, 4.Nc3443240.2%53.2%
E12Queen's Indian, 4.Nc3, Botvinnik variation3823.7%46.1%
E13Queen's Indian, 4.Nc3, main line20835.6%52.4%
E14Queen's Indian, 4.e3165239.9%53.4%
E15Queen's Indian, 4.g3222046.6%55.8%
E15Queen's Indian, 4.g3 Bb724641.1%54.3%
E17Queen's Indian, 5.Bg2 Be73026.7%43.3%
E14Queen's Indian, Averbakh variation20.0%50.0%
E15Queen's Indian, Buerger variation3135.5%59.7%
E16Queen's Indian, Capablanca variation34839.9%56.5%
E17Queen's Indian, Euwe variation5952.5%55.1%
A47Queen's Indian, Marienbad system7436.5%56.1%
A47Queen's Indian, Marienbad system, Berg variation1457.1%57.1%
E12Queen's Indian, Miles variation135544.0%53.0%
E15Queen's Indian, Nimzovich variation (exaggerated fianchetto)1391140.5%56.3%
E17Queen's Indian, Opovcensky variation64738.2%54.5%
E12Queen's Indian, Petrosian system636343.1%54.0%
E16Queen's Indian, Riumin variation20440.7%56.1%
E15Queen's Indian, Rubinstein variation11937.0%58.8%
E16Queen's Indian, Yates variation33337.5%59.0%
E17Queen's Indian, anti-Queen's Indian system28838.9%53.5%
E17Queen's Indian, old main line, 6.O-O83341.9%59.0%
E18Queen's Indian, old main line, 7.Nc3154843.7%56.6%
E19Queen's Indian, old main line, 9.Qxc3132345.7%58.5%
A41Queen's Pawn189136.1%54.3%
D02Queen's bishop game120239.3%53.1%
D20Queen's gambit accepted88545.9%55.3%
D23Queen's gambit accepted3737.8%54.1%
D30Queen's gambit declined580845.6%55.7%
A40Queen's pawn203137.3%55.1%
A45Queen's pawn game207639.4%54.6%
A46Queen's pawn game280140.7%55.0%
A50Queen's pawn game57738.0%55.9%
D00Queen's pawn game51240.6%50.0%
D02Queen's pawn game472841.3%52.7%
D04Queen's pawn game69941.6%50.6%
D05Queen's pawn game54136.4%52.0%
E00Queen's pawn game40141.1%56.5%
E10Queen's pawn game397045.1%55.7%
D02Queen's pawn game, Chigorin variation39941.4%57.5%
D02Queen's pawn game, Krause variation35444.9%54.1%
D05Queen's pawn game, Rubinstein (Colle-Zukertort) variation23839.5%53.8%
D05Queen's pawn game, Zukertort variation1861.1%52.8%
D00Queen's pawn, Anti-Veresov366.7%33.3%
A45Queen's pawn, Bronstein gambit1030.0%55.0%
A40Queen's pawn, Charlick (Englund) gambit2240.9%56.8%
D00Queen's pawn, Chigorin variation31134.7%52.1%
A40Queen's pawn, English defence18341.5%62.3%
A40Queen's pawn, Franco-Indian (Keres) defence97738.4%56.2%
A40Queen's pawn, Keres defence167344.6%56.1%
A40Queen's pawn, Lundin (Kevitz-Mikenas) defence15729.9%57.6%
D00Queen's pawn, Mason variation85940.9%52.1%
D00Queen's pawn, Mason variation, Steinitz counter-gambit43137.6%49.4%
E60Queen's pawn, Mengarini attack3531.4%61.4%
A46Queen's pawn, Torre attack126437.2%51.7%
A46Queen's pawn, Torre attack, Wagner gambit333.3%83.3%
A46Queen's pawn, Yusupov-Rubinstein system73341.2%52.4%
D00Queen's pawn, stonewall attack5736.8%43.0%
A09Reti accepted24240.5%52.9%
A09Reti accepted, Keres variation4032.5%68.8%
A04Reti opening726838.4%54.3%
A05Reti opening327637.2%53.3%
A06Reti opening58838.1%53.6%
A09Reti opening57040.0%53.2%
A04Reti v Dutch97534.9%59.2%
A04Reti, Herrstroem gambit20.0%100.0%
A05Reti, King's Indian attack113240.5%53.4%
A07Reti, King's Indian attack228942.0%53.1%
A08Reti, King's Indian attack51842.5%52.3%
A07Reti, King's Indian attack (Barcza system)429241.7%53.6%
A07Reti, King's Indian attack (with ...c5)17542.3%49.1%
A08Reti, King's Indian attack, French variation25637.5%48.4%
A07Reti, King's Indian attack, Keres variation68734.5%54.1%
A07Reti, King's Indian attack, Pachman system11436.8%52.6%
A05Reti, King's Indian attack, Reti-Smyslov variation5337.7%56.6%
A05Reti, King's Indian attack, Spassky's variation29742.4%52.5%
A07Reti, King's Indian attack, Yugoslav variation161440.1%52.7%
A04Reti, Lisitsin gambit deferred1816.7%75.0%
A06Reti, Nimzovich-Larsen attack305342.0%49.6%
A04Reti, Pirc-Lisitsin gambit12329.3%49.6%
A04Reti, Wade defence20.0%50.0%
A09Reti, advance variation79840.2%48.8%
A06Reti, old Indian attack9325.8%48.4%
B00Reversed Grob (Borg/Basman defence/macho Grob)1631.3%84.4%
D01Richter-Veresov attack42936.1%46.3%
D01Richter-Veresov attack, Richter variation1723.5%52.9%
D01Richter-Veresov attack, Veresov variation2250.0%47.7%
B06Robatsch (modern) defence550336.5%56.1%
B06Robatsch defence63037.1%58.1%
B07Robatsch defence, Geller's system59136.7%57.6%
B06Robatsch defence, Gurgenidze variation5236.5%60.6%
B06Robatsch defence, Pseudo-Austrian attack47433.8%54.6%
A41Robatsch defence, Rossolimo variation12837.5%51.6%
B06Robatsch defence, Two knights variation30733.6%61.4%
B06Robatsch defence, Two knights, Suttles variation99738.2%58.4%
B06Robatsch defence, three pawns attack13930.9%63.7%
C50Rousseau gambit333.3%50.0%
C70Ruy Lopez3545.7%51.4%
C60Ruy Lopez (Spanish opening)3228.1%64.1%
C78Ruy Lopez, ...b5 & ...d64837.5%54.2%
C78Ruy Lopez, 5.O-O107846.2%54.5%
C70Ruy Lopez, Alapin's defence deferred1533.3%76.7%
C77Ruy Lopez, Anderssen variation74142.1%51.3%
C78Ruy Lopez, Archangelsk (counterthrust) variation151742.3%55.0%
C65Ruy Lopez, Berlin defence269639.7%51.1%
C65Ruy Lopez, Berlin defence, 4.O-O16541.8%59.1%
C66Ruy Lopez, Berlin defence, 4.O-O, d68950.6%54.5%
C65Ruy Lopez, Berlin defence, Anderssen variation1100.0%50.0%
C65Ruy Lopez, Berlin defence, Beverwijk variation48936.2%57.4%
C67Ruy Lopez, Berlin defence, Cordel variation5536.4%58.2%
C65Ruy Lopez, Berlin defence, Duras variation1435.7%53.6%
C65Ruy Lopez, Berlin defence, Kaufmann variation3246.9%54.7%
C67Ruy Lopez, Berlin defence, Minckwitz variation4148.8%61.0%
C65Ruy Lopez, Berlin defence, Mortimer variation1464.3%32.1%
C65Ruy Lopez, Berlin defence, Nyholm attack7156.3%54.9%
C67Ruy Lopez, Berlin defence, Pillsbury variation10.0%0.0%
C67Ruy Lopez, Berlin defence, Rosenthal variation2450.0%62.5%
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 variation9952.5%57.6%
C67Ruy Lopez, Berlin defence, open variation350246.5%54.1%
C61Ruy Lopez, Bird's defence18643.0%59.7%
C61Ruy Lopez, Bird's defence, Paulsen variation540.0%60.0%
C70Ruy Lopez, Caro variation8542.4%58.8%
C70Ruy Lopez, Classical defence deferred8744.8%61.5%
C64Ruy Lopez, Cordel gambit6942.0%58.7%
C60Ruy Lopez, Cozio defence26343.0%51.1%
C70Ruy Lopez, Cozio defence deferred28045.4%53.4%
C60Ruy Lopez, Cozio defence, Paulsen variation3525.7%70.0%
C85Ruy Lopez, Exchange variation doubly deferred (DERLD)118239.7%48.9%
C70Ruy Lopez, Graz variation6100.0%50.0%
C60Ruy Lopez, Lucena defence20.0%50.0%
C89Ruy Lopez, Marshall counter-attack50053.0%54.1%
C89Ruy Lopez, Marshall counter-attack, 11...c617245.9%55.5%
C89Ruy Lopez, Marshall, Herman Steiner variation333.3%83.3%
C89Ruy Lopez, Marshall, Kevitz variation2100.0%50.0%
C89Ruy Lopez, Marshall, main line, 12.d2d420842.3%63.0%
C89Ruy Lopez, Marshall, main line, 14...Qh341950.6%51.1%
C89Ruy Lopez, Marshall, main line, Spassky variation10.0%0.0%
C78Ruy Lopez, Moeller defence56042.1%53.4%
C77Ruy Lopez, Morphy defence19639.3%55.9%
C77Ruy Lopez, Morphy defence, Duras variation4841.7%56.3%
C63Ruy Lopez, Schliemann defence30043.7%57.2%
C70Ruy Lopez, Schliemann defence deferred1926.3%71.1%
C63Ruy Lopez, Schliemann defence, Berger variation35742.0%56.9%
C74Ruy Lopez, Siesta, Kopayev variation11931.1%54.2%
C79Ruy Lopez, Steinitz defence deferred (Russian defence)23540.0%54.5%
C79Ruy Lopez, Steinitz defence deferred, Lipnitsky variation1172.7%54.5%
C79Ruy Lopez, Steinitz defence deferred, Rubinstein variation1241.7%54.2%
C70Ruy Lopez, Taimanov (chase/wing/accelerated counterthrust) variation13138.9%64.5%
C88Ruy Lopez, Trajkovic counter-attack62941.0%52.0%
C77Ruy Lopez, Treybal (Bayreuth) variation (exchange var. deferred)7041.4%43.6%
C78Ruy Lopez, Wing attack40.0%50.0%
C77Ruy Lopez, Wormald (Alapin) attack32141.4%54.4%
C77Ruy Lopez, Wormald attack, Gruenfeld variation2100.0%50.0%
C86Ruy Lopez, Worrall attack2454.2%56.3%
C86Ruy Lopez, Worrall attack, sharp line21636.6%53.5%
C86Ruy Lopez, Worrall attack, solid line6835.3%47.1%
C64Ruy Lopez, classical (Cordel) defence20943.5%52.4%
C64Ruy Lopez, classical defence, 4.c325340.7%55.5%
C64Ruy Lopez, classical defence, Benelux variation 38539.2%56.5%
C64Ruy Lopez, classical defence, Charousek variation450.0%75.0%
C64Ruy Lopez, classical defence, Zaitsev variation2100.0%50.0%
C88Ruy Lopez, closed122641.5%52.5%
C96Ruy Lopez, closed (10...c5)63432.8%64.7%
C96Ruy Lopez, closed (8...Na5)2254.5%63.6%
C90Ruy Lopez, closed (with ...d6)118436.7%51.4%
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 defence126040.6%51.6%
C88Ruy Lopez, closed, 7...O-O280640.4%52.3%
C88Ruy Lopez, closed, 7...d6, 8.d42030.0%20.0%
C88Ruy Lopez, closed, 8.c32737.0%63.0%
C91Ruy Lopez, closed, 9.d4120339.1%57.9%
C92Ruy Lopez, closed, 9.h338242.7%52.2%
C87Ruy Lopez, closed, Averbach variation25141.4%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 variation376143.1%53.8%
C96Ruy Lopez, closed, Borisenko defence4040.0%57.5%
C94Ruy Lopez, closed, Breyer defence4634.8%58.7%
C95Ruy Lopez, closed, Breyer, 10.d410.0%0.0%
C95Ruy Lopez, closed, Breyer, Borisenko variation71440.1%56.4%
C95Ruy Lopez, closed, Breyer, Gligoric variation4845.8%54.2%
C95Ruy Lopez, closed, Breyer, Simagin variation2035.0%57.5%
C97Ruy Lopez, closed, Chigorin defence74731.1%63.2%
C98Ruy Lopez, closed, Chigorin, 12...Nc613631.6%61.4%
C99Ruy Lopez, closed, Chigorin, 12...c5d490640.3%62.9%
C92Ruy Lopez, closed, Flohr-Zaitsev system (Lenzerheide variation)186238.7%56.3%
C96Ruy Lopez, closed, Keres (...Nd7) defence20337.9%65.3%
C92Ruy Lopez, closed, Keres (9...a5) variation1650.0%43.8%
C92Ruy Lopez, closed, Kholmov variation11930.3%66.4%
C90Ruy Lopez, closed, Lutikov variation3748.6%56.8%
C90Ruy Lopez, closed, Pilnik variation80735.6%51.9%
C92Ruy Lopez, closed, Ragozin-Petrosian (`Keres') variation29542.4%63.9%
C96Ruy Lopez, closed, Rossolimo defence30.0%33.3%
C93Ruy Lopez, closed, Smyslov defence15739.5%57.3%
C90Ruy Lopez, closed, Suetin variation6937.7%56.5%
C88Ruy Lopez, closed, anti-Marshall 8.a4150939.6%53.6%
C84Ruy Lopez, closed, centre attack16948.5%46.7%
C68Ruy Lopez, exchange variation7941.8%51.3%
C69Ruy Lopez, exchange variation, 5.O-O65241.9%53.6%
C69Ruy Lopez, exchange variation, Alapin gambit27541.1%51.1%
C68Ruy Lopez, exchange, Alekhine variation1637.5%43.8%
C69Ruy Lopez, exchange, Bronstein variation45232.5%50.3%
C69Ruy Lopez, exchange, Gligoric variation68542.2%55.5%
C68Ruy Lopez, exchange, Keres variation8454.8%51.2%
C68Ruy Lopez, exchange, Romanovsky variation1233.3%50.0%
C60Ruy Lopez, fianchetto (Smyslov/Barnes) defence27441.6%51.8%
C70Ruy Lopez, fianchetto defence deferred3458.8%55.9%
C77Ruy Lopez, four knights (Tarrasch) variation15346.4%55.9%
C71Ruy Lopez, modern Steinitz defence10842.6%55.6%
C74Ruy Lopez, modern Steinitz defence5038.0%57.0%
C75Ruy Lopez, modern Steinitz defence14642.5%54.8%
C72Ruy Lopez, modern Steinitz defence, 5.O-O39044.6%57.9%
C73Ruy Lopez, modern Steinitz defence, Alapin variation8338.6%54.2%
C71Ruy Lopez, modern Steinitz defence, Duras (Keres) variation11443.0%56.6%
C73Ruy Lopez, modern Steinitz defence, Richter variation13751.8%53.6%
C75Ruy Lopez, modern Steinitz defence, Rubinstein variation7538.7%55.3%
C71Ruy Lopez, modern Steinitz defence, Three knights variation1741.2%50.0%
C76Ruy Lopez, modern Steinitz defence, fianchetto (Bronstein) variation31535.2%51.6%
C74Ruy Lopez, modern Steinitz defence, siesta variation2045.0%47.5%
C62Ruy Lopez, old Steinitz defence26237.8%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...Be77035.7%53.6%
C67Ruy Lopez, open Berlin defence, Showalter variation1428.6%42.9%
C67Ruy Lopez, open Berlin defence, l'Hermet variation7556.0%49.3%
C80Ruy Lopez, open, 6.d44537.8%45.6%
C80Ruy Lopez, open, 7.Bb348340.8%52.9%
C80Ruy Lopez, open, 8...Be6122838.3%43.1%
C83Ruy Lopez, open, 9...Be7, 10.Re14334.9%54.7%
C82Ruy Lopez, open, 9.c350.0%80.0%
C80Ruy Lopez, open, Berger variation366.7%33.3%
C82Ruy Lopez, open, Berlin variation1637.5%68.8%
C80Ruy Lopez, open, Bernstein variation85347.2%63.1%
C80Ruy Lopez, open, Bernstein variation, Karpov gambit2343.5%43.5%
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 attack13351.9%50.8%
C81Ruy Lopez, open, Howell attack, Adam variation20.0%0.0%
C81Ruy Lopez, open, Howell attack, Ekstroem variation1040.0%60.0%
C82Ruy Lopez, open, Italian variation8948.3%65.7%
C83Ruy Lopez, open, Malkin variation1662.5%56.3%
C82Ruy Lopez, open, Motzko attack6546.2%58.5%
C82Ruy Lopez, open, Motzko attack, Nenarokov variation650.0%75.0%
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 defence16748.5%60.8%
A06Santasiere's folly11240.2%42.4%
A00Saragossa opening31230.1%49.4%
B01Scandinavian (centre counter) defence250342.0%57.0%
B01Scandinavian defence89840.4%58.6%
B01Scandinavian defence, Gruenfeld variation40.0%75.0%
B01Scandinavian defence, Lasker variation11533.0%64.3%
B01Scandinavian gambit14542.1%52.8%
B01Scandinavian, Anderssen counter-attack orthodox attack10.0%100.0%
B01Scandinavian, Anderssen counter-attack, Collijn variation10.0%100.0%
B01Scandinavian, Icelandic gambit5646.4%57.1%
B01Scandinavian, Kiel variation728.6%85.7%
B01Scandinavian, Marshall variation54144.9%60.0%
B01Scandinavian, Mieses-Kotrvc gambit862.5%43.8%
B01Scandinavian, Pytel-Wade variation261644.3%58.0%
B01Scandinavian, Richter variation250.0%75.0%
C44Scotch gambit4531.1%62.2%
C44Scotch gambit, Anderssen (Paulsen, Suhle) counter-attack666.7%33.3%
C44Scotch gambit, Benima defence4936.7%55.1%
C44Scotch gambit, Dubois-Reti defence28641.6%51.9%
C44Scotch gambit, Hanneken variation10.0%100.0%
C45Scotch game231642.7%53.5%
C44Scotch opening2100.0%50.0%
C45Scotch, Blackburne attack1741.2%50.0%
C45Scotch, Blumenfeld attack1637.5%31.3%
C45Scotch, Ghulam Kassim variation4100.0%50.0%
C44Scotch, Goering gambit18644.6%56.7%
C44Scotch, Goering gambit, Bardeleben variation837.5%43.8%
C45Scotch, Horwitz attack2536.0%66.0%
C44Scotch, Lolli variation1435.7%53.6%
C45Scotch, Meitner variation3554.3%55.7%
C45Scotch, Mieses variation135041.6%54.2%
C45Scotch, Paulsen attack10.0%100.0%
C45Scotch, Potter variation51139.7%51.4%
C45Scotch, Pulling counter-attack20.0%50.0%
C44Scotch, Relfsson gambit ('MacLopez')666.7%66.7%
C45Scotch, Romanishin variation5545.5%59.1%
C45Scotch, Schmidt variation60450.8%46.8%
C45Scotch, Steinitz variation4035.0%55.0%
C45Scotch, Tartakower variation1540.0%46.7%
A44Semi-Benoni (`blockade variation')10331.1%62.1%
B50Sicilian352841.1%53.0%
B54Sicilian70137.7%55.2%
B56Sicilian152339.7%53.3%
B20Sicilian defence200036.0%50.7%
B27Sicilian defence1631.3%53.1%
B30Sicilian defence250140.5%54.5%
B32Sicilian defence77038.8%56.0%
B33Sicilian defence42935.4%54.1%
B40Sicilian defence473439.5%53.9%
B44Sicilian defence30843.8%52.1%
B22Sicilian, 2.c3, Heidenfeld variation5726.3%44.7%
B22Sicilian, Alapin's variation (2.c3)574443.8%54.5%
B40Sicilian, Anderssen variation75640.1%57.7%
B21Sicilian, Andreaschek gambit1442.9%57.1%
B58Sicilian, Boleslavsky variation42936.8%48.0%
B59Sicilian, Boleslavsky variation, 7.Nb312646.8%52.0%
B58Sicilian, Boleslavsky, Louma variation4637.0%57.6%
B51Sicilian, Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack154838.8%55.6%
B52Sicilian, Canal-Sokolsky attack, 3...Bd7158542.9%49.8%
B52Sicilian, Canal-Sokolsky attack, Bronstein gambit19639.8%57.1%
B52Sicilian, Canal-Sokolsky attack, Sokolsky variation76544.1%55.9%
B53Sicilian, Chekhover variation112442.8%50.6%
B53Sicilian, Chekhover, Zaitsev variation5424.1%58.3%
B32Sicilian, Flohr variation21631.9%60.9%
B21Sicilian, Grand Prix attack148135.8%52.7%
B23Sicilian, Grand Prix attack66936.0%49.7%
B23Sicilian, Grand Prix attack, Schofman variation15040.7%53.0%
B27Sicilian, Hungarian variation330741.0%57.7%
B41Sicilian, Kan variation20442.2%54.9%
B42Sicilian, Kan, 5.Bd3173537.3%58.2%
B43Sicilian, Kan, 5.Nc3273538.7%56.5%
B42Sicilian, Kan, Gipslis variation7839.7%63.5%
B41Sicilian, Kan, Maroczy bind (Reti variation)43835.8%57.4%
B41Sicilian, Kan, Maroczy bind - Bronstein variation1936.8%28.9%
B42Sicilian, Kan, Polugaievsky variation129636.2%54.3%
B42Sicilian, Kan, Swiss cheese variation25335.6%61.3%
B27Sicilian, Katalimov variation13044.6%61.5%
B20Sicilian, Keres variation (2.Ne2)59941.2%52.0%
B32Sicilian, Labourdonnais-Loewenthal (Kalashnikov) variation115039.7%56.7%
B32Sicilian, Labourdonnais-Loewenthal variation22541.3%58.9%
B57Sicilian, Magnus Smith trap1050.0%35.0%
B40Sicilian, Marshall variation10.0%100.0%
B90Sicilian, Najdorf255836.6%53.5%
B98Sicilian, Najdorf variation33230.1%57.5%
B95Sicilian, Najdorf, 6...e6103239.0%49.7%
B94Sicilian, Najdorf, 6.Bg572635.8%53.4%
B93Sicilian, Najdorf, 6.f4153839.8%50.7%
B98Sicilian, Najdorf, 7...Be712632.5%54.4%
B99Sicilian, Najdorf, 7...Be7 main line58729.3%53.2%
B97Sicilian, Najdorf, 7...Qb6147833.0%46.1%
B96Sicilian, Najdorf, 7.f4122434.0%51.0%
B90Sicilian, Najdorf, Adams attack109437.7%51.5%
B98Sicilian, Najdorf, Browne variation4327.9%60.5%
B90Sicilian, Najdorf, Byrne (English) attack1875635.2%53.3%
B98Sicilian, Najdorf, Goteborg (Argentine) variation2045.0%47.5%
B90Sicilian, Najdorf, Lipnitzky attack91535.8%49.8%
B92Sicilian, Najdorf, Opovcensky variation492140.2%53.2%
B97Sicilian, Najdorf, Poisoned pawn variation107744.9%49.7%
B96Sicilian, Najdorf, Polugayevsky variation9538.9%54.2%
B96Sicilian, Najdorf, Polugayevsky, Simagin variation3122.6%56.5%
B91Sicilian, Najdorf, Zagreb (fianchetto) variation62338.0%54.2%
B32Sicilian, Nimzovich variation2339.1%54.3%
B31Sicilian, Nimzovich-Rossolimo attack (with ...g6, without ...d6)267241.0%56.0%
B30Sicilian, Nimzovich-Rossolimo attack (without ...d6)422337.8%56.2%
B31Sicilian, Nimzovich-Rossolimo attack, Gurgenidze variation2556.0%56.0%
B29Sicilian, Nimzovich-Rubinstein variation70142.1%59.7%
B29Sicilian, Nimzovich-Rubinstein; Rubinstein counter-gambit3154.8%46.8%
B28Sicilian, O'Kelly variation32738.8%56.4%
B33Sicilian, Pelikan (Lasker/Sveshnikov) variation94335.4%55.0%
B33Sicilian, Pelikan, Bird variation22538.2%64.0%
B33Sicilian, Pelikan, Chelyabinsk variation205735.9%57.3%
B40Sicilian, Pin variation (Sicilian counter-attack)1540.0%73.3%
B40Sicilian, Pin, Koch variation4325.6%80.2%
B54Sicilian, Prins (Moscow) variation39836.9%56.4%
B55Sicilian, Prins variation, Venice attack4242.9%50.0%
B27Sicilian, Quinteros variation3537.1%64.3%
B60Sicilian, Richter-Rauzer61735.5%58.1%
B62Sicilian, Richter-Rauzer, 6...e64639.1%58.7%
B60Sicilian, Richter-Rauzer, Bondarevsky variation2755.6%57.4%
B62Sicilian, Richter-Rauzer, Keres variation7035.7%52.1%
B60Sicilian, Richter-Rauzer, Larsen variation14330.1%59.1%
B61Sicilian, Richter-Rauzer, Larsen variation, 7.Qd240638.4%61.1%
B62Sicilian, Richter-Rauzer, Margate (Alekhine) variation5437.0%51.9%
B62Sicilian, Richter-Rauzer, Podvebrady variation1656.3%34.4%
B63Sicilian, Richter-Rauzer, Rauzer attack13835.5%57.6%
B63Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7109137.2%56.1%
B65Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9...Nxd451940.5%55.9%
B64Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9.f425838.8%54.3%
B66Sicilian, Richter-Rauzer, Rauzer attack, 7...a6563133.7%51.4%
B69Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 11.Bxf67931.6%61.4%
B67Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 8...Bd7267733.3%55.5%
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 variation358738.6%51.9%
B80Sicilian, Scheveningen variation121131.0%54.5%
B83Sicilian, Scheveningen, 6.Be252740.2%52.9%
B82Sicilian, Scheveningen, 6.f445732.8%57.8%
B80Sicilian, Scheveningen, English variation13931.7%52.5%
B81Sicilian, Scheveningen, Keres attack218534.4%59.6%
B82Sicilian, Scheveningen, Tal variation10535.2%61.4%
B80Sicilian, Scheveningen, Vitolins variation4949.0%51.0%
B85Sicilian, Scheveningen, classical13040.8%51.9%
B85Sicilian, Scheveningen, classical main line34346.6%55.4%
B85Sicilian, Scheveningen, classical variation with ...Qc7 and ...Nc6366.7%66.7%
B85Sicilian, Scheveningen, classical, Maroczy system2536.0%54.0%
B84Sicilian, Scheveningen, classical, Nd7 system6636.4%50.0%
B80Sicilian, Scheveningen, fianchetto variation18434.8%50.0%
B21Sicilian, Smith-Morra gambit70941.5%47.7%
B86Sicilian, Sozin attack16142.2%53.4%
B87Sicilian, Sozin with ...a6 and ...b575236.4%51.2%
B89Sicilian, Sozin, 7.Be399337.2%50.7%
B57Sicilian, Sozin, Benko variation125839.2%51.7%
B88Sicilian, Sozin, Fischer variation1346.2%53.8%
B88Sicilian, Sozin, Leonhardt variation53740.6%54.7%
B57Sicilian, Sozin, not Scheveningen21841.3%56.4%
B20Sicilian, Steinitz variation37343.4%50.1%
B33Sicilian, Sveshnikov variation133138.6%50.8%
B44Sicilian, Szen (`anti-Taimanov') variation78839.7%53.9%
B44Sicilian, Szen variation, Dely-Kasparov gambit2161.9%59.5%
B44Sicilian, Szen, hedgehog variation22839.5%50.9%
B47Sicilian, Taimanov (Bastrikov) variation366841.3%54.1%
B45Sicilian, Taimanov variation184838.3%56.6%
B46Sicilian, Taimanov variation305538.4%55.1%
B48Sicilian, Taimanov variation307837.3%56.0%
B49Sicilian, Taimanov variation61044.8%58.1%
B45Sicilian, Taimanov, American attack1942.1%42.1%
B89Sicilian, Velimirovic attack71633.4%51.3%
B56Sicilian, Venice attack5437.0%64.8%
B39Sicilian, accelerated fianchetto, Breyer variation62340.4%58.1%
B36Sicilian, accelerated fianchetto, Gurgenidze variation25244.8%60.1%
B36Sicilian, accelerated fianchetto, Maroczy bind91744.9%58.3%
B37Sicilian, accelerated fianchetto, Maroczy bind, 5...Bg713447.8%55.2%
B38Sicilian, accelerated fianchetto, Maroczy bind, 6.Be3106544.1%57.5%
B37Sicilian, accelerated fianchetto, Simagin variation2100.0%50.0%
B34Sicilian, accelerated fianchetto, exchange variation1947.4%65.8%
B34Sicilian, accelerated fianchetto, modern variation32936.5%52.0%
B35Sicilian, accelerated fianchetto, modern variation with Bc4189943.3%53.0%
B23Sicilian, chameleon variation58235.2%58.2%
B58Sicilian, classical20545.9%46.8%
B23Sicilian, closed294838.1%51.6%
B24Sicilian, closed40537.5%49.6%
B25Sicilian, closed23938.5%48.5%
B23Sicilian, closed, 2...Nc6169640.7%51.6%
B26Sicilian, closed, 6.Be357532.7%49.9%
B25Sicilian, closed, 6.Ne2 e5 (Botvinnik)4233.3%52.4%
B25Sicilian, closed, 6.f441339.7%51.1%
B25Sicilian, closed, 6.f4 e5 (Botvinnik)2846.4%55.4%
B23Sicilian, closed, Korchnoi variation13551.1%53.0%
B24Sicilian, closed, Smyslov variation2133.3%54.8%
B70Sicilian, dragon variation70041.4%51.9%
B72Sicilian, dragon, 6.Be38234.1%53.7%
B71Sicilian, dragon, Levenfish variation4531.1%57.8%
B71Sicilian, dragon, Levenfish; Flohr variation450.0%50.0%
B75Sicilian, dragon, Yugoslav attack26731.5%58.8%
B78Sicilian, dragon, Yugoslav attack, 10.O-O-O32428.1%54.5%
B79Sicilian, dragon, Yugoslav attack, 12.h41030.0%65.0%
B76Sicilian, dragon, Yugoslav attack, 7...O-O31234.6%52.9%
B77Sicilian, dragon, Yugoslav attack, 9...Bd719942.2%55.8%
B77Sicilian, dragon, Yugoslav attack, 9.Bc410433.7%49.5%
B76Sicilian, dragon, Yugoslav attack, Rauser variation90733.5%64.6%
B72Sicilian, dragon, classical attack9439.4%51.6%
B73Sicilian, dragon, classical, 8.O-O35745.9%51.8%
B74Sicilian, dragon, classical, 9.Nb335951.8%47.9%
B74Sicilian, dragon, classical, Alekhine variation2347.8%67.4%
B72Sicilian, dragon, classical, Amsterdam variation4223.8%47.6%
B72Sicilian, dragon, classical, Grigoriev variation2846.4%51.8%
B72Sicilian, dragon, classical, Nottingham variation1844.4%55.6%
B74Sicilian, dragon, classical, Reti-Tartakower variation8547.1%55.3%
B73Sicilian, dragon, classical, Richter variation10544.8%56.7%
B74Sicilian, dragon, classical, Spielmann variation837.5%56.3%
B73Sicilian, dragon, classical, Zollner gambit944.4%44.4%
B83Sicilian, modern Scheveningen41142.3%47.4%
B83Sicilian, modern Scheveningen, main line50543.8%53.2%
B83Sicilian, modern Scheveningen, main line with Nb38636.0%57.6%
B20Sicilian, wing gambit5750.9%41.2%
B50Sicilian, wing gambit deferred2123.8%35.7%
B20Sicilian, wing gambit, Carlsbad variation1136.4%45.5%
B20Sicilian, wing gambit, Marshall variation6129.5%55.7%
B00St. George (Baker) defence3839.5%59.2%
C00St. George defence11648.3%63.8%
A06Tennison (Lemberg, Zukertort) gambit1656.3%40.6%
C46Three knights game11936.1%55.0%
C46Three knights, Schlechter variation2035.0%52.5%
C46Three knights, Steinitz variation3043.3%55.0%
C46Three knights, Steinitz, Rosenthal variation540.0%40.0%
C46Three knights, Winawer defence (Gothic defence)10.0%100.0%
D03Torre attack (Tartakower variation)64339.3%50.6%
A45Trompovsky attack (Ruth, Opovcensky opening)367636.4%52.2%
C55Two knights defence6243.5%52.4%
C56Two knights defence13943.9%49.3%
C57Two knights defence1118.2%45.5%
C58Two knights defence17636.4%55.7%
C59Two knights defence19238.0%49.2%
C55Two knights defence (Modern bishop's opening)124038.6%56.2%
C58Two knights defence, Blackburne variation30.0%66.7%
C58Two knights defence, Bogolyubov variation5532.7%45.5%
C56Two knights defence, Canal variation540.0%40.0%
C58Two knights defence, Colman variation2326.1%34.8%
C57Two knights defence, Fegatello attack6526.2%53.1%
C57Two knights defence, Fegatello attack, Leonhardt variation825.0%50.0%
C57Two knights defence, Fegatello attack, Polerio defence30.0%100.0%
C57Two knights defence, Fritz variation1060.0%40.0%
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 variation633.3%66.7%
C57Two knights defence, Lolli attack1936.8%55.3%
C58Two knights defence, Paoli variation933.3%72.2%
C55Two knights defence, Perreux variation2548.0%52.0%
C59Two knights defence, Steinitz variation32829.3%48.2%
C57Two knights defence, Ulvestad variation2263.6%45.5%
C57Two knights defence, Wilkes Barre (Traxler) variation4837.5%54.2%
C58Two knights defence, Yankovich variation1241.7%20.8%
C55Two knights, Max Lange attack1942.1%57.9%
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 opening46141.0%51.5%
C25Vienna gambit3129.0%53.2%
C29Vienna gambit18439.7%46.5%
C29Vienna gambit, Bardeleben variation742.9%35.7%
C29Vienna gambit, Breyer variation9231.5%53.8%
C29Vienna gambit, Kaufmann variation837.5%68.8%
C29Vienna gambit, Paulsen attack683.3%58.3%
C29Vienna gambit, Steinitz variation633.3%33.3%
C29Vienna gambit, Wurzburger trap20.0%100.0%
C25Vienna game24734.4%60.9%
C26Vienna game25845.7%54.7%
C27Vienna game11643.1%54.3%
C28Vienna game35342.2%53.1%
C25Vienna game, Max Lange defence2142.9%50.0%
C27Vienna, Alekhine variation1442.9%50.0%
C26Vienna, Falkbeer variation4546.7%54.4%
C26Vienna, Mengarini variation1060.0%40.0%
C25Vienna, Paulsen variation8035.0%57.5%
C26Vienna, Paulsen-Mieses variation46042.0%52.7%
C25Vienna, Pierce gambit1145.5%59.1%
C25Vienna, Steinitz gambit10.0%0.0%
C27Vienna, `Frankenstein-Dracula' variation10.0%100.0%
A56Vulture defence1100.0%50.0%
A00Ware (Meadow Hay) opening425.0%62.5%
B12de Bruycker defence520.0%70.0%

Created in 2005-2013 by CCRL team
Last games added on February 17, 2018