CCRL 40/4
Downloads and Statistics
January 13, 2018
Testing summary:
Total: 1'626'652 games
played by 1'934 programs
21844 CPU days (X2 4600+)

White wins: 635'703 (39.1%)
Black wins: 517'026 (31.8%)
Draws: 473'923 (29.1%)
White score: 53.6%

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
C20Alapin's opening11023.6%48.2%
B02Alekhine's defence55632.7%56.1%
B03Alekhine's defence76723.9%53.4%
B03Alekhine's defence, Balogh variation4320.9%59.3%
B02Alekhine's defence, Brooklyn defence6221.0%58.9%
B02Alekhine's defence, Kmoch variation60.0%50.0%
B02Alekhine's defence, Krejcik variation1827.8%36.1%
B02Alekhine's defence, Maroczy variation26822.8%47.2%
B02Alekhine's defence, Mokele Mbembe (Buecker) variation2722.2%63.0%
B03Alekhine's defence, O'Sullivan gambit166.3%59.4%
B02Alekhine's defence, Saemisch attack24122.0%57.9%
B02Alekhine's defence, Scandinavian variation37527.5%55.6%
B02Alekhine's defence, Spielmann variation1533.3%56.7%
B02Alekhine's defence, Steiner variation825.0%37.5%
B02Alekhine's defence, Two pawns' (Lasker's) attack13840.6%47.1%
B02Alekhine's defence, Welling variation2927.6%44.8%
B03Alekhine's defence, exchange variation76431.4%58.1%
B03Alekhine's defence, exchange, Karpov variation540.0%40.0%
B03Alekhine's defence, four pawns attack9332.3%58.1%
B03Alekhine's defence, four pawns attack, 6...Nc65121.6%50.0%
B03Alekhine's defence, four pawns attack, 7.Be315729.9%61.5%
B03Alekhine's defence, four pawns attack, Ilyin-Genevsky var.20.0%50.0%
B03Alekhine's defence, four pawns attack, Planinc variation20.0%100.0%
B03Alekhine's defence, four pawns attack, Tartakower variation250.0%75.0%
B03Alekhine's defence, four pawns attack, Trifunovic variation4922.4%68.4%
B03Alekhine's defence, four pawns attack, fianchetto variation5036.0%64.0%
B04Alekhine's defence, modern variation39521.8%61.3%
B05Alekhine's defence, modern variation, 4...Bg490028.9%64.7%
B05Alekhine's defence, modern, Alekhine variation560.0%50.0%
B05Alekhine's defence, modern, Flohr variation37530.7%64.9%
B04Alekhine's defence, modern, Keres variation16933.7%61.8%
B04Alekhine's defence, modern, Larsen variation127132.3%56.8%
B05Alekhine's defence, modern, Panov variation1936.8%65.8%
B04Alekhine's defence, modern, Schmid variation13729.9%66.1%
B05Alekhine's defence, modern, Vitolins attack850.0%25.0%
B04Alekhine's defence, modern, fianchetto variation87931.1%55.5%
A00Amar (Paris) opening7622.4%41.4%
A00Amar gambit1216.7%50.0%
A00Amsterdam attack933.3%50.0%
A00Anderssen's opening70321.9%47.5%
A00Anti-Borg (Desprez) opening2321.7%58.7%
B00Barnes defence1816.7%63.9%
A00Battambang opening933.3%27.8%
A40Beefeater defence3823.7%59.2%
A57Benko gambit114924.9%54.7%
A59Benko gambit8532.9%63.5%
A58Benko gambit accepted83131.0%55.5%
A57Benko gambit half accepted120829.6%57.9%
A59Benko gambit, 7.e4933.3%61.1%
A58Benko gambit, Nd2 variation1330.8%53.8%
A59Benko gambit, Ne2 variation1428.6%64.3%
A57Benko gambit, Nescafe Frappe attack120.0%33.3%
A57Benko gambit, Zaitsev system6924.6%50.0%
A58Benko gambit, fianchetto variation39529.4%55.2%
A59Benko gambit, main line93434.3%62.3%
A00Benko's opening1106630.7%50.8%
A00Benko's opening, reversed Alekhine9225.0%46.2%
A56Benoni defence154226.8%58.9%
A60Benoni defence21625.9%53.2%
A61Benoni defence73124.8%58.6%
A56Benoni defence, Hromodka system108821.0%58.7%
A65Benoni, 6.e418723.5%59.4%
A66Benoni, Mikenas variation450.0%50.0%
A61Benoni, Nimzovich (knight's tour) variation69227.7%57.4%
A67Benoni, Taimanov variation38919.5%59.1%
A61Benoni, Uhlmann variation10928.4%50.9%
A78Benoni, classical with ...Re8 and ...Na68535.3%52.9%
A75Benoni, classical with ...a6 and 10...Bg415329.4%53.3%
A70Benoni, classical with e4 and Nf3151427.1%59.6%
A70Benoni, classical without 9.O-O922.2%77.8%
A72Benoni, classical without 9.O-O12328.5%60.6%
A79Benoni, classical, 11.f320020.0%67.0%
A71Benoni, classical, 8.Bg512826.6%53.9%
A76Benoni, classical, 9...Re812616.7%60.7%
A77Benoni, classical, 9...Re8, 10.Nd240825.0%55.9%
A74Benoni, classical, 9...a6, 10.a43033.3%53.3%
A73Benoni, classical, 9.O-O26124.9%53.4%
A61Benoni, fianchetto variation6825.0%53.7%
A62Benoni, fianchetto variation129122.4%55.5%
A64Benoni, fianchetto, 11...Re818527.0%52.4%
A63Benoni, fianchetto, 9...Nbd710527.6%56.7%
A68Benoni, four pawns attack140.0%42.9%
A69Benoni, four pawns attack, main line9032.2%42.8%
A66Benoni, pawn storm variation560.0%70.0%
A02Bird's opening269929.3%49.9%
A03Bird's opening286624.0%48.9%
A03Bird's opening, Lasker variation2937.9%50.0%
A02Bird's opening, Swiss gambit1414.3%64.3%
A03Bird's opening, Williams gambit1816.7%58.3%
A02Bird, From gambit7829.5%46.8%
A02Bird, From gambit, Lasker variation3414.7%54.4%
A02Bird, From gambit, Lipke variation520.0%30.0%
A02Bird, Hobbs gambit425.0%62.5%
C23Bishop's opening38824.2%52.8%
C24Bishop's opening, Berlin defence136927.5%52.4%
C23Bishop's opening, Calabrese counter-gambit, Jaenisch variation1711.8%64.7%
C23Bishop's opening, Classical variation11417.5%50.9%
C23Bishop's opening, Lewis counter-gambit633.3%50.0%
C23Bishop's opening, Lewis gambit540.0%40.0%
C23Bishop's opening, Philidor counter-attack10434.6%59.6%
C23Bishop's opening, Philidor variation1926.3%55.3%
C24Bishop's opening, Ponziani gambit1921.1%36.8%
C24Bishop's opening, Urusov gambit2528.0%42.0%
C24Bishop's opening, Urusov gambit, Panov variation616.7%58.3%
D00Blackmar gambit8229.3%42.7%
A45Blackmar-Diemer gambit16227.2%54.3%
D00Blackmar-Diemer gambit3215.6%51.6%
D00Blackmar-Diemer, Euwe defence110.0%45.5%
E10Blumenfeld counter-gambit11827.1%54.2%
E10Blumenfeld counter-gambit accepted20323.6%53.7%
E10Blumenfeld counter-gambit, Dus-Chotimursky variation37528.5%55.3%
E10Blumenfeld counter-gambit, Spielmann variation9220.7%53.8%
C27Boden-Kieseritsky gambit5813.8%50.0%
C27Boden-Kieseritsky gambit, Lichtenhein defence633.3%33.3%
E11Bogo-Indian defence353932.6%55.5%
E11Bogo-Indian defence, Gruenfeld variation365830.6%55.3%
E11Bogo-Indian defence, Monticelli trap2825.0%55.4%
E11Bogo-Indian defence, Nimzovich variation266928.7%56.5%
A52Budapest defence7423.0%56.1%
A51Budapest defence declined5221.2%52.9%
A52Budapest, Adler variation62929.9%59.1%
A52Budapest, Alekhine variation6421.9%48.4%
A52Budapest, Alekhine, Abonyi variation4829.2%60.4%
A51Budapest, Fajarowicz variation12025.8%62.1%
A51Budapest, Fajarowicz, Steiner variation1100.0%50.0%
A52Budapest, Rubinstein variation71436.6%58.8%
A45Canard opening2718.5%50.0%
B10Caro-Kann defence541324.9%53.8%
B12Caro-Kann defence181322.1%56.5%
B15Caro-Kann defence60125.3%49.3%
B12Caro-Kann, 3.Nd247926.7%59.1%
B15Caro-Kann, Alekhine gambit2948.3%55.2%
B16Caro-Kann, Bronstein-Larsen variation72424.4%60.8%
B12Caro-Kann, Edinburgh variation4914.3%74.5%
B15Caro-Kann, Forgacs variation11235.7%55.4%
B10Caro-Kann, Goldman (Spielmann) variation10723.4%49.1%
B15Caro-Kann, Gurgenidze counter-attack3116.1%59.7%
B15Caro-Kann, Gurgenidze system52228.2%57.8%
B10Caro-Kann, Hillbilly attack3735.1%58.1%
B13Caro-Kann, Panov-Botvinnik attack182432.5%53.6%
B14Caro-Kann, Panov-Botvinnik attack, 5...e6554633.4%55.0%
B14Caro-Kann, Panov-Botvinnik attack, 5...g645139.2%54.2%
B13Caro-Kann, Panov-Botvinnik, Czerniak variation4045.0%60.0%
B13Caro-Kann, Panov-Botvinnik, Gunderam attack933.3%38.9%
B13Caro-Kann, Panov-Botvinnik, Herzog defence2123.8%54.8%
B13Caro-Kann, Panov-Botvinnik, Reifir (Spielmann) variation425.0%87.5%
B13Caro-Kann, Panov-Botvinnik, normal variation24835.9%49.0%
B15Caro-Kann, Rasa-Studier gambit1330.8%38.5%
B17Caro-Kann, Steinitz variation531929.0%53.9%
B15Caro-Kann, Tartakower (Nimzovich) variation112032.1%53.0%
B12Caro-Kann, Tartakower (fantasy) variation97927.2%55.2%
B10Caro-Kann, Two knights variation86427.4%55.6%
B11Caro-Kann, Two knights, 3...Bg4151325.4%53.1%
B12Caro-Kann, advance variation2114624.9%53.9%
B12Caro-Kann, advance, Short variation9318.3%68.3%
B10Caro-Kann, anti-Caro-Kann defence129826.0%56.9%
B10Caro-Kann, anti-anti-Caro-Kann defence220534.1%51.9%
B18Caro-Kann, classical variation196430.5%55.3%
B18Caro-Kann, classical, 6.h4222131.2%53.3%
B19Caro-Kann, classical, 7...Nd791124.7%52.0%
B18Caro-Kann, classical, Flohr variation8837.5%58.5%
B18Caro-Kann, classical, Maroczy attack742.9%64.3%
B19Caro-Kann, classical, Spassky variation844127.7%57.5%
B10Caro-Kann, closed (Breyer) variation174924.7%50.5%
B13Caro-Kann, exchange variation106927.3%50.7%
B13Caro-Kann, exchange, Rubinstein variation21034.3%55.7%
B12Caro-Masi defence1414.3%50.0%
B00Carr's defence6524.6%53.8%
E00Catalan opening640130.8%54.1%
E01Catalan, closed51030.4%53.4%
E06Catalan, closed, 5.Nf3628734.5%54.2%
E07Catalan, closed, 6...Nbd718030.6%53.1%
E08Catalan, closed, 7.Qc223631.8%54.0%
E07Catalan, closed, Botvinnik variation14825.0%59.8%
E08Catalan, closed, Qc2 & b341028.5%51.6%
E09Catalan, closed, Sokolsky variation30.0%66.7%
E08Catalan, closed, Spassky gambit2524.0%56.0%
E08Catalan, closed, Zagoryansky variation450.0%75.0%
E09Catalan, closed, main line63728.7%57.1%
E04Catalan, open, 5.Nf31065832.5%53.3%
E02Catalan, open, 5.Qa49438.3%59.6%
E03Catalan, open, 5.Qa4 Nbd7, 6.Qxc42839.3%55.4%
E03Catalan, open, Alekhine variation156.7%43.3%
E05Catalan, open, classical line49430.8%56.1%
C21Centre game28033.6%58.6%
C22Centre game2128.6%61.9%
C22Centre game, Berger variation38226.2%54.2%
C22Centre game, Charousek variation714.3%50.0%
C22Centre game, Hall variation825.0%62.5%
C22Centre game, Paulsen attack9331.2%50.0%
A00Clemenz (Mead's, Basman's or de Klerk's) opening465223.6%49.4%
D05Colle system79830.5%52.3%
B00Corn stalk defence1136.4%81.8%
A56Czech Benoni defence77525.4%61.6%
A56Czech Benoni, King's Indian system33318.9%59.9%
C40Damiano's defence2927.6%55.2%
C21Danish gambit5827.6%55.2%
C21Danish gambit, Collijn defence30.0%33.3%
C21Danish gambit, Soerensen defence3026.7%53.3%
A46Doery defence250.0%25.0%
E10Doery defence10823.1%45.8%
C44Dresden opening5820.7%46.6%
A00Dunst (Sleipner, Heinrichsen) opening190523.3%52.1%
A00Durkin's attack6717.9%53.7%
A80Dutch775826.4%54.1%
A81Dutch defence717028.5%56.2%
A84Dutch defence161125.8%57.4%
A90Dutch defence204226.1%55.8%
A91Dutch defence20232.7%52.5%
A92Dutch defence11533.0%60.0%
A92Dutch defence, Alekhine variation11631.0%59.5%
A81Dutch defence, Blackburne variation7732.5%61.7%
A90Dutch defence, Dutch-Indian (Nimzo-Dutch) variation48328.4%60.6%
A84Dutch defence, Rubinstein variation64728.1%56.9%
A85Dutch with c4 & Nc353933.4%55.8%
A86Dutch with c4 & g320226.2%62.6%
A80Dutch, 2.Bg5 variation235922.9%53.3%
A82Dutch, Balogh defence728.6%57.1%
A86Dutch, Hort-Antoshin system40.0%75.0%
A97Dutch, Ilyin-Genevsky variation4630.4%63.0%
A98Dutch, Ilyin-Genevsky variation with Qc217226.7%60.5%
A99Dutch, Ilyin-Genevsky variation with b349724.9%59.2%
A97Dutch, Ilyin-Genevsky, Winter variation18135.9%64.9%
A80Dutch, Korchnoi attack10431.7%52.4%
A80Dutch, Krejcik gambit15533.5%46.5%
A86Dutch, Leningrad variation19831.8%59.8%
A81Dutch, Leningrad, Karlsbad variation742.9%64.3%
A87Dutch, Leningrad, main variation78828.6%59.7%
A89Dutch, Leningrad, main variation with Nc6138028.7%57.6%
A88Dutch, Leningrad, main variation with c6217131.2%57.0%
A80Dutch, Manhattan (Alapin, Ulvestad) variation11821.2%54.7%
A80Dutch, Spielmann gambit333.3%16.7%
A82Dutch, Staunton gambit15330.7%39.5%
A84Dutch, Staunton gambit deferred1625.0%37.5%
A83Dutch, Staunton gambit, Alekhine variation1931.6%63.2%
A83Dutch, Staunton gambit, Chigorin variation5733.3%67.5%
A83Dutch, Staunton gambit, Lasker variation1127.3%50.0%
A83Dutch, Staunton gambit, Nimzovich variation714.3%50.0%
A83Dutch, Staunton gambit, Staunton's line23226.3%46.3%
A82Dutch, Staunton gambit, Tartakower variation1618.8%53.1%
A80Dutch, Von Pretzel gambit1100.0%50.0%
A96Dutch, classical variation53531.0%61.9%
A92Dutch, stonewall variation34326.5%58.5%
A94Dutch, stonewall with Ba318236.3%53.3%
A92Dutch, stonewall with Nc37021.4%63.6%
A95Dutch, stonewall with Nc346026.5%53.9%
A93Dutch, stonewall, Botwinnik variation26229.0%59.9%
A95Dutch, stonewall: Chekhover variation5036.0%56.0%
A90Dutch-Indian, Alekhine variation11230.4%49.1%
E10Dzindzikhashvili defence19427.8%59.8%
A10English opening461925.1%53.3%
A13English opening473325.4%53.1%
A15English opening1264333.1%54.0%
A16English opening118827.4%54.0%
A17English opening36531.0%52.7%
A20English opening1086528.4%52.2%
A21English opening329427.3%54.1%
A22English opening104625.7%50.5%
A13English opening, Agincourt variation282327.8%52.2%
A15English, 1...Nf6 (Anglo-Indian defense)161926.3%52.5%
A10English, Adorjan defence53936.5%51.7%
A10English, Anglo-Dutch defense129624.7%55.2%
A16English, Anglo-Gruenfeld defense31529.5%52.2%
A16English, Anglo-Gruenfeld defense, Korchnoi variation1330.8%69.2%
A16English, Anglo-Gruenfeld, Czech defense12730.7%66.5%
A16English, Anglo-Gruenfeld, Smyslov defense7538.7%59.3%
A22English, Bellon gambit1612.5%43.8%
A12English, Bled variation4431.8%59.1%
A26English, Botvinnik system41024.4%47.8%
A28English, Bradley Beach variation18629.6%43.8%
A24English, Bremen system with ...g67227.8%59.7%
A23English, Bremen system, Keres variation43733.0%48.5%
A22English, Bremen, Smyslov system262428.3%49.0%
A22English, Bremen, reverse dragon161534.4%53.2%
A12English, Capablanca's variation7427.0%48.6%
A22English, Carls' Bremen system81725.9%54.8%
A11English, Caro-Kann defensive system141027.8%55.6%
A12English, Caro-Kann defensive system27527.6%55.3%
A12English, Caro-Kann defensive system, Bogolyubov variation13822.5%51.1%
A10English, Jaenisch gambit1921.1%68.4%
A21English, Keres variation2634.6%44.2%
A21English, Kramnik-Shirov counterattack358028.7%52.6%
A13English, Kurajica defence11825.4%50.8%
A12English, London defensive system36732.2%49.0%
A18English, Mikenas-Carls variation9824.5%57.1%
A18English, Mikenas-Carls, Flohr variation16129.8%60.2%
A18English, Mikenas-Carls, Kevitz variation4717.0%55.3%
A19English, Mikenas-Carls, Sicilian variation24829.0%55.2%
A28English, Nenarokov variation7634.2%46.1%
A13English, Neo-Catalan169130.2%53.5%
A13English, Neo-Catalan accepted225433.5%54.3%
A14English, Neo-Catalan declined108735.6%52.7%
A12English, New York (London) defensive system4533.3%45.6%
A17English, Nimzo-English opening250630.8%54.6%
A20English, Nimzovich variation29127.1%54.8%
A20English, Nimzovich, Flohr variation66029.5%46.6%
A17English, Queens Indian formation22425.4%54.7%
A17English, Queens Indian, Romanishin variation4736.2%47.9%
A13English, Romanishin gambit73131.3%54.4%
A25English, Sicilian reversed107526.5%51.9%
A21English, Smyslov defence5326.4%56.6%
A14English, Symmetrical, Keres defence89036.3%55.0%
A12English, Torre defensive system36535.1%51.8%
A21English, Troeger defence17027.6%54.4%
A13English, Wimpey system31730.3%46.7%
A25English, closed system135528.3%53.1%
A26English, closed system33823.1%50.9%
A25English, closed system (without ...d6)9924.2%48.5%
A25English, closed, 5.Rb165828.9%51.8%
A25English, closed, 5.Rb1 Taimanov variation425.0%37.5%
A25English, closed, Hort variation4131.7%50.0%
A25English, closed, Taimanov variation2737.0%44.4%
A28English, four knights system62225.1%52.3%
A28English, four knights, 4.e3136827.8%51.3%
A28English, four knights, Capablanca variation49029.4%53.1%
A28English, four knights, Marini variation139331.6%54.0%
A28English, four knights, Nimzovich variation125029.4%52.0%
A28English, four knights, Romanishin variation116334.1%50.6%
A28English, four knights, Stean variation17624.4%56.0%
A29English, four knights, kingside fianchetto1646030.6%51.5%
A30English, symmetrical variation839629.1%53.7%
A32English, symmetrical variation80929.0%52.6%
A33English, symmetrical variation400335.4%52.2%
A34English, symmetrical variation185126.4%50.6%
A35English, symmetrical variation36927.6%57.5%
A36English, symmetrical variation16826.2%48.8%
A37English, symmetrical variation93628.8%53.0%
A38English, symmetrical variation72529.4%52.8%
A31English, symmetrical, Benoni formation222628.3%54.5%
A36English, symmetrical, Botvinnik system64328.0%56.3%
A36English, symmetrical, Botvinnik system reversed14827.7%49.7%
A37English, symmetrical, Botvinnik system reversed70827.4%51.0%
A33English, symmetrical, Geller variation283930.6%52.9%
A34English, symmetrical, Rubinstein system35732.8%53.4%
A35English, symmetrical, four knights system395130.1%53.0%
A30English, symmetrical, hedgehog system757131.9%55.8%
A30English, symmetrical, hedgehog, flexible formation58136.3%56.9%
A38English, symmetrical, main line with b31136.4%36.4%
A38English, symmetrical, main line with d315735.0%51.3%
A39English, symmetrical, main line with d4118038.1%55.0%
A34English, symmetrical, three knights system237234.9%52.4%
A27English, three knights system46926.9%52.7%
A36English, ultra-symmetrical variation192928.8%49.3%
C51Evans gambit60.0%0.0%
C52Evans gambit24327.2%40.3%
C51Evans gambit declined2138.1%42.9%
C51Evans gambit declined, 5.a410529.5%47.1%
C51Evans gambit declined, Cordel variation1330.8%30.8%
C51Evans gambit declined, Showalter variation1428.6%50.0%
C51Evans gambit, 5...Be7771.4%35.7%
C52Evans gambit, Alapin-Steinitz variation450.0%75.0%
C51Evans gambit, Cordel variation11028.2%48.6%
C51Evans gambit, Goering attack1127.3%59.1%
C52Evans gambit, Lasker defence1040.0%50.0%
C52Evans gambit, Leonhardt variation2100.0%50.0%
C52Evans gambit, Levenfish variation250.0%25.0%
C51Evans gambit, Morphy attack1338.5%57.7%
C51Evans gambit, Paulsen variation3611.1%44.4%
C52Evans gambit, Richardson attack616.7%25.0%
C51Evans gambit, Steinitz variation10.0%100.0%
C51Evans gambit, Stone-Ware variation5722.8%44.7%
C52Evans gambit, Tartakower attack9621.9%51.6%
C52Evans gambit, Waller attack616.7%41.7%
C52Evans gambit, compromised defence2810.7%55.4%
C52Evans gambit, compromised defence, Paulsen variation1625.0%68.8%
C51Evans gambit, normal variation1233.3%41.7%
C49Four knights13235.6%50.4%
C46Four knights game89729.0%50.1%
C48Four knights, Bardeleben variation728.6%57.1%
C47Four knights, Belgrade gambit24526.1%42.9%
C49Four knights, Gunsberg counter-attack1100.0%50.0%
C46Four knights, Gunsberg variation11729.1%42.7%
C46Four knights, Italian variation39529.1%48.2%
C49Four knights, Janowski variation2138.1%38.1%
C48Four knights, Marshall variation1118.2%63.6%
C49Four knights, Nimzovich (Paulsen) variation7244.4%54.2%
C48Four knights, Ranken variation2825.0%44.6%
C48Four knights, Rubinstein counter-gambit150426.4%53.8%
C48Four knights, Rubinstein counter-gambit, 5.Be21323.1%57.7%
C48Four knights, Rubinstein counter-gambit, Bogolyubov variation1533.3%56.7%
C48Four knights, Rubinstein counter-gambit, Henneberger variation4835.4%61.5%
C48Four knights, Rubinstein counter-gambit, exchange variation13041.5%48.5%
C46Four knights, Schultze-Mueller gambit2429.2%39.6%
C47Four knights, Scotch variation4436.4%61.4%
C47Four knights, Scotch, 4...exd478636.4%50.9%
C47Four knights, Scotch, Krause variation18733.7%55.3%
C48Four knights, Spanish variation32927.1%51.8%
C48Four knights, Spanish, classical defence15627.6%52.2%
C48Four knights, Spielmann variation633.3%50.0%
C49Four knights, Svenonius variation30.0%66.7%
C49Four knights, double Ruy Lopez31242.3%56.4%
C49Four knights, symmetrical variation49831.5%49.9%
C49Four knights, symmetrical, Blake variation475.0%62.5%
C49Four knights, symmetrical, Capablanca variation3342.4%57.6%
C49Four knights, symmetrical, Maroczy system8839.8%51.7%
C49Four knights, symmetrical, Metger unpin49035.1%52.4%
C49Four knights, symmetrical, Pillsbury variation4725.5%42.6%
C49Four knights, symmetrical, Tarrasch variation540.0%60.0%
B00Fred80.0%87.5%
C00French defence369323.3%55.1%
C11French defence59125.4%48.6%
C00French defence, Steiner variation111727.8%49.8%
C00French, Alapin variation4515.6%45.6%
C13French, Albin-Alekhine-Chatard attack38222.0%56.5%
C13French, Albin-Alekhine-Chatard attack, Breyer variation9228.3%55.4%
C13French, Albin-Alekhine-Chatard attack, Maroczy variation728.6%28.6%
C13French, Albin-Alekhine-Chatard attack, Spielmann variation5626.8%56.3%
C13French, Albin-Alekhine-Chatard attack, Teichmann variation922.2%88.9%
C11French, Burn variation916530.8%52.0%
C00French, Chigorin variation313724.7%50.8%
C10French, Fort Knox variation45933.8%54.1%
C10French, Frere (Becker) variation4723.4%54.3%
C11French, Henneberger variation3138.7%32.3%
C00French, King's Indian attack736828.6%50.9%
C00French, Labourdonnais variation63725.6%49.1%
C12French, MacCutcheon variation29329.4%51.9%
C12French, MacCutcheon, Bernstein variation185.6%52.8%
C12French, MacCutcheon, Bogolyubov variation616.7%75.0%
C12French, MacCutcheon, Chigorin variation4233.3%54.8%
C12French, MacCutcheon, Dr. Olland (Dutch) variation3429.4%55.9%
C12French, MacCutcheon, Duras variation366.7%66.7%
C12French, MacCutcheon, Grigoriev variation862.5%56.3%
C12French, MacCutcheon, Janowski variation17724.3%59.6%
C12French, MacCutcheon, Lasker variation45719.9%51.8%
C12French, MacCutcheon, Lasker variation, 8...g674924.6%54.6%
C12French, MacCutcheon, Tartakower variation450.0%50.0%
C12French, MacCutcheon, advance variation1241.7%54.2%
C10French, Marshall variation1435.7%67.9%
C10French, Paulsen variation153227.3%56.5%
C00French, Pelikan variation8427.4%50.6%
C00French, Reti (Spielmann) variation28827.1%55.2%
C00French, Reversed Philidor formation8229.3%40.2%
C10French, Rubinstein variation745132.7%53.4%
C10French, Rubinstein, Capablanca line2035.0%52.5%
C00French, Schlechter variation46431.5%50.9%
C00French, Steinitz attack5036.0%52.0%
C11French, Steinitz variation179426.8%53.8%
C11French, Steinitz, Boleslavsky variation666526.4%54.6%
C11French, Steinitz, Bradford attack30.0%33.3%
C11French, Steinitz, Gledhill attack5141.2%53.9%
C11French, Swiss variation13730.7%43.8%
C03French, Tarrasch284530.0%56.2%
C05French, Tarrasch, Botvinnik variation14924.2%57.0%
C07French, Tarrasch, Eliskases variation7834.6%48.1%
C04French, Tarrasch, Guimard main line43926.0%56.0%
C03French, Tarrasch, Guimard variation22822.8%61.0%
C03French, Tarrasch, Haberditz variation1513.3%66.7%
C06French, Tarrasch, Leningrad variation5117.6%53.9%
C05French, Tarrasch, closed variation192324.2%56.9%
C06French, Tarrasch, closed variation, main line270232.1%55.4%
C07French, Tarrasch, open variation626332.6%52.8%
C09French, Tarrasch, open variation, main line218537.1%55.8%
C08French, Tarrasch, open, 4.ed ed314036.7%53.0%
C00French, Two knights variation85524.4%49.8%
C15French, Winawer (Nimzovich) variation129131.4%53.1%
C15French, Winawer, Alekhine (Maroczy) gambit37731.3%56.5%
C15French, Winawer, Alekhine gambit70.0%71.4%
C15French, Winawer, Alekhine gambit, Alatortsev variation1100.0%50.0%
C15French, Winawer, Alekhine gambit, Kan variation20034.0%49.0%
C15French, Winawer, Kondratiyev variation1241.7%62.5%
C16French, Winawer, Petrosian variation37023.8%54.1%
C16French, Winawer, advance variation109323.9%56.9%
C17French, Winawer, advance variation9525.3%60.0%
C18French, Winawer, advance variation74720.5%57.1%
C17French, Winawer, advance, 5.a375525.3%57.3%
C19French, Winawer, advance, 6...Ne778726.2%59.6%
C17French, Winawer, advance, Bogolyubov variation30128.2%56.3%
C17French, Winawer, advance, Rauzer variation757.1%42.9%
C17French, Winawer, advance, Russian variation6524.6%49.2%
C19French, Winawer, advance, Smyslov variation26225.2%58.8%
C19French, Winawer, advance, poisoned pawn variation509124.4%58.7%
C19French, Winawer, advance, poisoned pawn, Euwe-Gligoric variation1450.0%53.6%
C19French, Winawer, advance, poisoned pawn, Konstantinopolsky variation123925.7%60.3%
C19French, Winawer, advance, positional main line282423.3%57.5%
C18French, Winawer, classical variation78320.9%56.4%
C15French, Winawer, fingerslip variation3721.6%59.5%
C00French, Wing gambit4812.5%41.7%
C02French, advance variation204125.2%53.8%
C02French, advance, Euwe variation298425.2%52.2%
C02French, advance, Milner-Barry gambit12726.0%53.1%
C02French, advance, Nimzovich system32619.3%46.8%
C02French, advance, Nimzovich variation4325.6%22.1%
C02French, advance, Paulsen attack211524.5%53.5%
C02French, advance, Steinitz variation67228.6%49.7%
C02French, advance, Wade variation38627.5%54.9%
C13French, classical2412.5%52.1%
C14French, classical variation2213.6%20.5%
C14French, classical, Alapin variation7634.2%60.5%
C13French, classical, Anderssen variation4621.7%39.1%
C13French, classical, Anderssen-Richter variation1315.4%30.8%
C13French, classical, Frankfurt variation1618.8%84.4%
C14French, classical, Pollock variation120.0%41.7%
C14French, classical, Rubinstein variation4719.1%54.3%
C14French, classical, Stahlberg variation450.0%75.0%
C14French, classical, Steinitz variation91926.4%57.6%
C14French, classical, Tarrasch variation650.0%75.0%
C13French, classical, Tartakower variation2626.9%55.8%
C13French, classical, Vistaneckis (Nimzovich) variation40.0%75.0%
C01French, exchange variation205931.2%53.5%
C01French, exchange, Bogolyubov variation922.2%33.3%
C01French, exchange, Svenonius variation6137.7%58.2%
A00Gedult's opening3116.1%40.3%
C50Giuoco Pianissimo189730.0%52.2%
C50Giuoco Pianissimo, Canal variation23330.0%51.5%
C50Giuoco Pianissimo, Italian four knights variation51028.4%55.6%
C50Giuoco Piano128429.9%50.6%
C53Giuoco Piano438327.8%52.7%
C54Giuoco Piano15126.5%54.3%
C53Giuoco Piano, Anderssen variation2250.0%52.3%
C53Giuoco Piano, Bird's attack13425.4%52.2%
C54Giuoco Piano, Greco variation1100.0%50.0%
C54Giuoco Piano, Greco's attack425.0%37.5%
C53Giuoco Piano, LaBourdonnais variation1540.0%60.0%
C53Giuoco Piano, Mestel variation250.0%75.0%
C54Giuoco Piano, Moeller (Therkatz) attack2544.0%38.0%
C53Giuoco Piano, Tarrasch variation425.0%62.5%
C53Giuoco Piano, centre-holding variation2722.2%63.0%
C53Giuoco Piano, close variation4022.5%51.3%
C50Giuoco Piano, four knights variation13426.9%51.5%
C55Giuoco piano1100.0%50.0%
A00Global opening1618.8%71.9%
C40Greco defence9017.8%64.4%
A00Grob's attack23222.0%49.4%
A00Grob, Fritz gambit3910.3%20.5%
D80Gruenfeld defence81841.7%53.5%
D99Gruenfeld defence, Smyslov, Yugoslav variation5149.0%59.8%
D99Gruenfeld defence, Smyslov, main line38530.6%61.6%
D93Gruenfeld with Bf4 e367538.2%52.9%
D94Gruenfeld with e3 Bd33040.0%60.0%
D95Gruenfeld with e3 & Qb36939.1%50.0%
D82Gruenfeld, 4.Bf456332.9%53.7%
D92Gruenfeld, 5.Bf4109432.8%55.1%
D91Gruenfeld, 5.Bg5204431.8%49.6%
D94Gruenfeld, 5.e373835.1%58.1%
D95Gruenfeld, Botvinnik variation11230.4%43.8%
D94Gruenfeld, Flohr defence6624.2%54.5%
D90Gruenfeld, Flohr variation29735.0%49.5%
D83Gruenfeld, Gruenfeld gambit6129.5%52.5%
D84Gruenfeld, Gruenfeld gambit accepted8725.3%66.7%
D83Gruenfeld, Gruenfeld gambit, Botvinnik variation2161.9%40.5%
D83Gruenfeld, Gruenfeld gambit, Capablanca variation8938.2%56.2%
D94Gruenfeld, Makogonov variation22331.4%50.7%
D94Gruenfeld, Opovcensky variation20537.6%50.0%
D81Gruenfeld, Russian variation37933.8%55.7%
D96Gruenfeld, Russian variation50930.5%53.9%
D97Gruenfeld, Russian variation with e46731.3%50.0%
D97Gruenfeld, Russian, Alekhine (Hungarian) variation398531.5%51.4%
D97Gruenfeld, Russian, Byrne (Simagin) variation33925.4%51.3%
D98Gruenfeld, Russian, Keres variation1225.0%70.8%
D97Gruenfeld, Russian, Levenfish variation1030.0%45.0%
D97Gruenfeld, Russian, Prins variation115734.2%55.4%
D98Gruenfeld, Russian, Smyslov variation59027.5%53.9%
D97Gruenfeld, Russian, Szabo (Boleslavsky) variation33429.6%60.0%
D90Gruenfeld, Schlechter variation1625.0%62.5%
D94Gruenfeld, Smyslov defence25535.7%52.7%
D88Gruenfeld, Spassky variation, main line, 10...cd, 11.cd33240.7%52.3%
D89Gruenfeld, Spassky variation, main line, 13.Bd310732.7%53.7%
D80Gruenfeld, Stockholm variation57734.5%50.0%
D90Gruenfeld, Three knights variation69834.4%53.7%
D85Gruenfeld, exchange variation281335.7%52.7%
D86Gruenfeld, exchange, Larsen variation1926.3%60.5%
D87Gruenfeld, exchange, Seville variation17938.5%65.6%
D86Gruenfeld, exchange, Simagin's improved variation12032.5%57.1%
D86Gruenfeld, exchange, Simagin's lesser variation6230.6%62.1%
D89Gruenfeld, exchange, Sokolsky variation6434.4%39.1%
D87Gruenfeld, exchange, Spassky variation67834.4%57.3%
D86Gruenfeld, exchange, classical variation130931.8%54.5%
D85Gruenfeld, modern exchange variation745436.8%53.5%
B00Guatemala defence10.0%100.0%
C40Gunderam defence23922.2%63.8%
C21Halasz gambit4528.9%41.1%
A43Hawk (Habichd) defence425.0%37.5%
C50Hungarian defence12134.7%54.5%
C44Inverted Hanham4725.5%48.9%
C44Inverted Hungarian5129.4%50.0%
C36KGA, Abbazia defence (classical defence, modern defence[!])2718.5%53.7%
C36KGA, Abbazia defence, Botvinnik variation20.0%100.0%
C36KGA, Abbazia defence, modern variation19333.2%43.0%
C39KGA, Allgaier gambit10.0%100.0%
C34KGA, Becker defence4520.0%41.1%
C37KGA, Blachly gambit2213.6%29.5%
C34KGA, Bonsch-Osmolovsky variation4425.0%42.0%
C33KGA, Breyer gambit2040.0%30.0%
C33KGA, Carrera (Basman) gambit3531.4%41.4%
C35KGA, Cunningham defence10121.8%46.5%
C35KGA, Cunningham, Bertin gambit20.0%50.0%
C35KGA, Cunningham, Euwe defence6628.8%50.8%
C34KGA, Fischer defence21520.9%47.7%
C34KGA, Gianutio counter-gambit10.0%0.0%
C38KGA, Hanstein gambit2119.0%38.1%
C33KGA, Keres (Mason-Steinitz) gambit439.3%44.2%
C39KGA, Kieseritsky, Berlin defence5414.8%37.0%
C39KGA, Kieseritsky, Berlin defence, 6.Bc45230.8%48.1%
C39KGA, Kieseritsky, Brentano (Campbell) defence10.0%100.0%
C39KGA, Kieseritsky, Kolisch defence10433.7%50.5%
C39KGA, Kieseritsky, Neumann defence425.0%62.5%
C39KGA, Kieseritsky, Paulsen defence540.0%40.0%
C39KGA, Kieseritsky, Rice gambit1952.6%26.3%
C39KGA, Kieseritsky, Salvio (Rosenthal) defence1656.3%59.4%
C37KGA, King's knight's gambit10.0%0.0%
C33KGA, Lesser bishop's (Petroff-Jaenisch-Tartakower) gambit229.1%45.5%
C37KGA, Lolli gambit (wild Muzio gambit)1100.0%50.0%
C33KGA, Lopez-Gianutio counter-gambit, Hein variation250.0%75.0%
C37KGA, MacDonnell gambit250.0%75.0%
C37KGA, Muzio gambit119.1%13.6%
C38KGA, Philidor gambit40.0%25.0%
C38KGA, Philidor gambit, Schultz variation50.0%20.0%
C37KGA, Quaade gambit137.7%11.5%
C37KGA, Rosentreter gambit333.3%83.3%
C37KGA, Salvio gambit1127.3%50.0%
C37KGA, Salvio gambit, Anderssen counter-attack30.0%33.3%
C34KGA, Schallop defence9918.2%49.5%
C37KGA, Silberschmidt gambit20.0%0.0%
C33KGA, Villemson (Steinitz) gambit728.6%42.9%
C33KGA, bishop's gambit12815.6%52.3%
C33KGA, bishop's gambit, Anderssen variation616.7%75.0%
C33KGA, bishop's gambit, Bledow variation4332.6%41.9%
C33KGA, bishop's gambit, Boden defence714.3%35.7%
C33KGA, bishop's gambit, Bogolyubov variation3312.1%48.5%
C33KGA, bishop's gambit, Boren-Svenonius variation30.0%66.7%
C33KGA, bishop's gambit, Cozio (Morphy) defence2835.7%39.3%
C33KGA, bishop's gambit, Jaenisch variation10026.0%52.0%
C33KGA, bishop's gambit, Lopez-Gianutio counter-gambit3125.8%29.0%
C33KGA, bishop's gambit, Maurian defence2420.8%52.1%
C33KGA, bishop's gambit, McDonnell attack250.0%75.0%
C33KGA, bishop's gambit, Morphy variation3826.3%44.7%
C33KGA, bishop's gambit, Paulsen attack812.5%43.8%
C33KGA, bishop's gambit, Ruy Lopez defence540.0%40.0%
C33KGA, bishop's gambit, Steinitz defence7630.3%45.4%
C33KGA, bishop's gambit, classical defence119.1%22.7%
C37KGA, double Muzio gambit10.0%0.0%
C30KGD, 2...Nf66426.6%52.3%
C31KGD, Falkbeer counter-gambit6520.0%46.9%
C31KGD, Falkbeer, 3...e4540.0%60.0%
C31KGD, Falkbeer, 4.d31533.3%63.3%
C32KGD, Falkbeer, 5.de3729.7%52.7%
C32KGD, Falkbeer, Charousek gambit20.0%100.0%
C32KGD, Falkbeer, Charousek variation10.0%0.0%
C32KGD, Falkbeer, Keres variation1100.0%50.0%
C31KGD, Falkbeer, Morphy gambit742.9%64.3%
C31KGD, Falkbeer, Nimzovich variation70.0%42.9%
C32KGD, Falkbeer, Reti variation366.7%33.3%
C31KGD, Falkbeer, Rubinstein variation450.0%50.0%
C32KGD, Falkbeer, Tarrasch variation10.0%100.0%
C31KGD, Falkbeer, Tartakower variation1625.0%81.3%
C32KGD, Falkbeer, main line, 7...Bf5977.8%38.9%
C30KGD, Keene's defence3917.9%50.0%
C30KGD, Mafia defence10825.9%59.3%
C31KGD, Nimzovich counter-gambit5225.0%45.2%
C30KGD, Norwalde variation1428.6%50.0%
C30KGD, classical counter-gambit616.7%58.3%
C30KGD, classical variation22820.6%46.7%
C30KGD, classical, 4.c313625.0%62.5%
C30KGD, classical, Heath variation366.7%33.3%
C30KGD, classical, Marshall attack1127.3%50.0%
C30KGD, classical, Reti variation616.7%75.0%
C30KGD, classical, Soldatenkov variation1225.0%54.2%
C30KGD, classical, Svenonius variation520.0%50.0%
B00KP, Colorado counter1631.3%59.4%
C20KP, Indian opening24027.1%50.2%
C20KP, King's head opening1631.3%59.4%
C20KP, Lopez opening6235.5%45.2%
C20KP, Mengarini's opening7817.9%56.4%
C20KP, Napoleon's opening1540.0%53.3%
B00KP, Nimzovich defence246723.8%57.7%
B00KP, Nimzovich defence, Bogolyubov variation26917.1%55.0%
B00KP, Nimzovich defence, Marshall gambit616.7%41.7%
C20KP, Patzer opening2528.0%58.0%
A50Kevitz-Trajkovich defence113327.6%53.6%
E60King's Indian defence157523.6%53.2%
E61King's Indian defence, 3.Nc3130427.9%54.0%
E72King's Indian with e4 & g34228.6%54.8%
E60King's Indian, 3.Nf3461229.1%55.6%
E60King's Indian, 3.g3215631.4%55.9%
E60King's Indian, 3.g3, counterthrust variation1631.3%46.9%
E70King's Indian, 4.e482125.7%54.4%
E73King's Indian, 5.Be210622.6%49.1%
E90King's Indian, 5.Nf3118423.5%54.3%
E91King's Indian, 6.Be287325.0%59.8%
E92King's Indian, Andersson variation42039.3%52.7%
E60King's Indian, Anti-Gruenfeld13922.3%45.7%
E73King's Indian, Averbakh system85428.8%52.2%
E74King's Indian, Averbakh, 6...c524223.1%63.2%
E75King's Indian, Averbakh, main line4233.3%50.0%
E60King's Indian, Danube gambit1631.3%53.1%
A48King's Indian, East Indian defence162428.6%53.4%
E76King's Indian, Four pawns attack30232.1%59.4%
E77King's Indian, Four pawns attack23932.2%52.9%
E77King's Indian, Four pawns attack, 6.Be250.0%40.0%
E77King's Indian, Four pawns attack, Florentine gambit3930.8%41.0%
E76King's Indian, Four pawns attack, dynamic line14831.8%52.4%
E79King's Indian, Four pawns attack, main line12644.4%57.1%
E78King's Indian, Four pawns attack, with Be2 and Nf32245.5%59.1%
E92King's Indian, Gligoric-Taimanov system244624.7%57.4%
E91King's Indian, Kazakh variation69729.4%57.5%
E70King's Indian, Kramer system22922.3%53.5%
E90King's Indian, Larsen variation11129.7%53.6%
A48King's Indian, London system107128.6%51.9%
E71King's Indian, Makagonov system (5.h3)82725.5%55.2%
E92King's Indian, Petrosian system18517.8%57.0%
E93King's Indian, Petrosian system, Keres variation2828.6%50.0%
E92King's Indian, Petrosian system, Stein variation120527.2%53.1%
E93King's Indian, Petrosian system, main line22623.5%55.1%
E72King's Indian, Pomar system1353.8%57.7%
E80King's Indian, Saemisch variation49325.2%55.6%
E81King's Indian, Saemisch, 5...O-O226725.2%54.1%
E83King's Indian, Saemisch, 6...Nc69417.0%55.3%
E81King's Indian, Saemisch, Byrne variation8731.0%51.1%
E83King's Indian, Saemisch, Panno formation19921.1%54.3%
E84King's Indian, Saemisch, Panno main line84121.9%52.1%
E83King's Indian, Saemisch, Ruban variation812.5%56.3%
E82King's Indian, Saemisch, double fianchetto variation15529.0%60.3%
E89King's Indian, Saemisch, orthodox main line8026.3%61.9%
E85King's Indian, Saemisch, orthodox variation5335.8%57.5%
E86King's Indian, Saemisch, orthodox, 7.Nge2 c654622.3%54.9%
E87King's Indian, Saemisch, orthodox, 7.d546120.6%62.1%
E88King's Indian, Saemisch, orthodox, 7.d5 c651130.7%55.1%
E87King's Indian, Saemisch, orthodox, Bronstein variation1127.3%59.1%
E73King's Indian, Semi-Averbakh system3522.9%57.1%
E61King's Indian, Smyslov system13224.2%50.8%
A48King's Indian, Torre attack182329.5%49.9%
E90King's Indian, Zinnowitz variation9631.3%53.1%
E70King's Indian, accelerated Averbakh system12526.4%50.0%
E92King's Indian, classical variation1926.3%44.7%
E62King's Indian, fianchetto variation14328.0%55.2%
E62King's Indian, fianchetto with ...Nc633824.6%57.0%
E67King's Indian, fianchetto with ...Nd718628.0%62.4%
A49King's Indian, fianchetto without c4213028.0%54.2%
E62King's Indian, fianchetto, Kavalek (Bronstein) variation115129.7%58.2%
E62King's Indian, fianchetto, Larsen system31229.5%54.5%
E63King's Indian, fianchetto, Panno variation325128.7%57.0%
E62King's Indian, fianchetto, Simagin variation16328.2%68.1%
E62King's Indian, fianchetto, Uhlmann (Szabo) variation49730.2%58.1%
E66King's Indian, fianchetto, Yugoslav Panno46127.1%55.6%
E64King's Indian, fianchetto, Yugoslav system18124.3%56.9%
E65King's Indian, fianchetto, Yugoslav, 7.O-O22531.6%55.8%
E69King's Indian, fianchetto, classical main line125630.3%60.0%
E67King's Indian, fianchetto, classical variation96631.5%55.1%
E68King's Indian, fianchetto, classical variation, 8.e4211529.1%58.7%
E62King's Indian, fianchetto, lesser Simagin (Spassky) variation43123.4%58.6%
E94King's Indian, orthodox variation188231.5%57.1%
E94King's Indian, orthodox, 7...Nbd7257626.5%57.0%
E95King's Indian, orthodox, 7...Nbd7, 8.Re197626.6%56.0%
E96King's Indian, orthodox, 7...Nbd7, main line21533.0%59.3%
E97King's Indian, orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation)850625.0%55.5%
E98King's Indian, orthodox, Aronin-Taimanov, 9.Ne1314321.2%59.1%
E99King's Indian, orthodox, Aronin-Taimanov, Benko attack4231.0%44.0%
E97King's Indian, orthodox, Aronin-Taimanov, bayonet attack311328.7%57.7%
E99King's Indian, orthodox, Aronin-Taimanov, main line13222.7%53.8%
E94King's Indian, orthodox, Donner variation22826.8%55.9%
C30King's gambit17325.4%56.1%
C33King's gambit accepted922.2%44.4%
C40King's knight opening616.7%41.7%
C34King's knight's gambit6914.5%47.8%
C38King's knight's gambit911.1%50.0%
C39King's knight's gambit10.0%100.0%
C20King's pawn game28920.4%52.1%
C44King's pawn game6926.1%47.8%
C50King's pawn game37422.7%54.4%
B00King's pawn opening281825.3%53.6%
C44Konstantinopolsky opening2213.6%43.2%
A00Lasker simul special14027.9%46.8%
C40Latvian counter-gambit15125.2%60.9%
C40Latvian gambit, 3.Bc4633.3%66.7%
C40Latvian, Fraser defence128.3%62.5%
C40Latvian, Polerio variation60.0%33.3%
C00Lengfellner system10827.8%61.1%
D00Levitsky attack (Queen's bishop attack)260024.7%49.8%
A00Mieses opening49718.1%52.7%
A40Modern defence206624.5%56.1%
A41Modern defence9127.5%56.6%
A42Modern defence, Averbakh system93229.4%57.9%
A42Modern defence, Averbakh system, Kotov variation67824.9%58.0%
A42Modern defence, Averbakh system, Randspringer variation728.6%28.6%
A03Mujannah opening70.0%42.9%
D70Neo-Gruenfeld (Kemeri) defence15141.1%53.6%
D70Neo-Gruenfeld defence37623.9%53.5%
D73Neo-Gruenfeld, 5.Nf3121540.3%53.3%
D71Neo-Gruenfeld, 5.cd20541.0%56.1%
D72Neo-Gruenfeld, 5.cd, main line33932.4%51.9%
D77Neo-Gruenfeld, 6.O-O173733.8%53.2%
D78Neo-Gruenfeld, 6.O-O c6166532.8%54.1%
D79Neo-Gruenfeld, 6.O-O, main line83437.1%53.1%
D74Neo-Gruenfeld, 6.cd Nxd5, 7.O-O53733.9%56.8%
D76Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb6118434.6%55.6%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc337343.2%54.3%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.dc4330.2%64.0%
E00Neo-Indian (Seirawan) attack56723.8%49.8%
E20Nimzo-Indian defence25326.5%46.0%
E40Nimzo-Indian, 4.e321726.7%54.4%
E46Nimzo-Indian, 4.e3 O-O19035.8%51.1%
E47Nimzo-Indian, 4.e3 O-O, 5.Bd384237.4%54.8%
E48Nimzo-Indian, 4.e3 O-O, 5.Bd3 d566631.4%51.9%
E41Nimzo-Indian, 4.e3 c580333.4%49.9%
E42Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein)204731.2%55.3%
E51Nimzo-Indian, 4.e3 e8g8, 5.Nf3 d7d526031.9%51.3%
E50Nimzo-Indian, 4.e3 e8g8, 5.Nf3, without ...d512931.0%56.6%
E49Nimzo-Indian, 4.e3, Botvinnik system43529.7%48.2%
E45Nimzo-Indian, 4.e3, Bronstein (Byrne) variation68531.2%54.7%
E53Nimzo-Indian, 4.e3, Gligoric system with 7...Nbd712639.7%55.6%
E54Nimzo-Indian, 4.e3, Gligoric system with 7...dc211035.7%53.7%
E55Nimzo-Indian, 4.e3, Gligoric system, Bronstein variation295534.8%53.5%
E54Nimzo-Indian, 4.e3, Gligoric system, Smyslov variation4334.9%54.7%
E53Nimzo-Indian, 4.e3, Keres variation10732.7%47.2%
E51Nimzo-Indian, 4.e3, Ragozin variation5149.0%57.8%
E40Nimzo-Indian, 4.e3, Taimanov variation10122.8%52.0%
E59Nimzo-Indian, 4.e3, main line206630.7%54.2%
E52Nimzo-Indian, 4.e3, main line with ...b676532.7%52.5%
E53Nimzo-Indian, 4.e3, main line with ...c5153937.0%51.5%
E56Nimzo-Indian, 4.e3, main line with 7...Nc6123829.9%54.6%
E58Nimzo-Indian, 4.e3, main line with 8...Bxc3288328.7%48.6%
E57Nimzo-Indian, 4.e3, main line with 8...dc and 9...cd2729.6%70.4%
E43Nimzo-Indian, Fischer variation63329.9%54.9%
E44Nimzo-Indian, Fischer variation, 5.Ne288424.5%56.7%
E20Nimzo-Indian, Kmoch variation105524.5%54.3%
E30Nimzo-Indian, Leningrad variation46331.1%51.0%
E30Nimzo-Indian, Leningrad, ...b5 gambit3444.1%42.6%
E31Nimzo-Indian, Leningrad, main line20521.0%47.1%
E20Nimzo-Indian, Mikenas attack1631.3%34.4%
E46Nimzo-Indian, Reshevsky variation144628.1%52.4%
E20Nimzo-Indian, Romanishin-Kasparov (Steiner) system75728.9%50.0%
E24Nimzo-Indian, Saemisch variation18932.8%50.3%
E25Nimzo-Indian, Saemisch variation12036.7%53.3%
E26Nimzo-Indian, Saemisch variation12227.0%48.8%
E27Nimzo-Indian, Saemisch variation4533.3%52.2%
E28Nimzo-Indian, Saemisch variation9230.4%53.3%
E24Nimzo-Indian, Saemisch, Botvinnik variation3026.7%46.7%
E29Nimzo-Indian, Saemisch, Capablanca variation12940.3%50.4%
E25Nimzo-Indian, Saemisch, Keres variation39630.8%51.5%
E26Nimzo-Indian, Saemisch, O'Kelly variation3721.6%37.8%
E25Nimzo-Indian, Saemisch, Romanovsky variation15042.7%50.7%
E29Nimzo-Indian, Saemisch, main line13230.3%59.1%
E46Nimzo-Indian, Simagin variation10729.0%48.1%
E22Nimzo-Indian, Spielmann variation12832.0%52.0%
E23Nimzo-Indian, Spielmann, 4...c5, 5.dc Nc62722.2%40.7%
E23Nimzo-Indian, Spielmann, Karlsbad variation1428.6%35.7%
E23Nimzo-Indian, Spielmann, San Remo variation650.0%58.3%
E32Nimzo-Indian, classical variation870232.4%53.1%
E33Nimzo-Indian, classical, 4...Nc612824.2%62.9%
E38Nimzo-Indian, classical, 4...c577430.1%57.2%
E32Nimzo-Indian, classical, Adorjan gambit19129.3%58.1%
E36Nimzo-Indian, classical, Botvinnik variation1533.3%56.7%
E33Nimzo-Indian, classical, Milner-Barry (Zurich) variation57027.2%52.9%
E34Nimzo-Indian, classical, Noa variation80533.5%52.7%
E36Nimzo-Indian, classical, Noa variation, 5.a343132.7%56.0%
E35Nimzo-Indian, classical, Noa variation, 5.cd ed96132.9%49.7%
E36Nimzo-Indian, classical, Noa variation, main line50.0%20.0%
E37Nimzo-Indian, classical, Noa variation, main line, 7.Qc215231.6%59.2%
E39Nimzo-Indian, classical, Pirc variation135432.1%56.5%
E37Nimzo-Indian, classical, San Remo variation1241.7%54.2%
E41Nimzo-Indian, e3, Huebner variation93225.9%49.3%
E21Nimzo-Indian, three knights variation328129.0%51.7%
E21Nimzo-Indian, three knights, Euwe variation837.5%56.3%
E21Nimzo-Indian, three knights, Korchnoi variation4334.9%61.6%
A01Nimzovich-Larsen attack93626.2%51.3%
A01Nimzovich-Larsen attack, Dutch variation16721.0%50.6%
A01Nimzovich-Larsen attack, English variation41428.0%51.2%
A01Nimzovich-Larsen attack, Indian variation61525.2%54.7%
A01Nimzovich-Larsen attack, Polish variation2634.6%51.9%
A01Nimzovich-Larsen attack, classical variation174726.7%48.8%
A01Nimzovich-Larsen attack, modern variation279931.2%50.1%
A01Nimzovich-Larsen attack, symmetrical variation61730.1%49.6%
A00Novosibirsk opening258.0%48.0%
A43Old Benoni defence249325.4%55.4%
A44Old Benoni defence6225.8%66.1%
A43Old Benoni, Franco-Benoni defence15826.6%61.4%
A43Old Benoni, Mujannah formation11921.0%60.9%
A43Old Benoni, Schmid's system2429.2%52.1%
A41Old Indian defence298926.1%51.1%
A53Old Indian defence177729.3%55.4%
A54Old Indian, Dus-Khotimirsky variation812.5%68.8%
A53Old Indian, Janowski variation63219.8%58.8%
A41Old Indian, Tartakower (Wade) variation327824.6%58.5%
A54Old Indian, Ukrainian variation19630.6%50.5%
A54Old Indian, Ukrainian variation, 4.Nf330926.5%54.7%
A55Old Indian, main line115626.7%62.6%
B00Owen defence71825.1%55.8%
A45Paleface attack19119.9%41.4%
C42Petrov three knights game52628.5%54.0%
C42Petrov's defence93624.8%53.8%
C42Petrov, Cochrane gambit4314.0%46.5%
C42Petrov, Cozio (Lasker) attack28331.8%51.6%
C42Petrov, Damiano variation3930.8%53.8%
C42Petrov, French attack1315.4%69.2%
C42Petrov, Italian variation15519.4%51.0%
C42Petrov, Kaufmann attack29532.5%57.6%
C42Petrov, Nimzovich attack72133.6%54.4%
C42Petrov, Paulsen attack25627.3%46.1%
C43Petrov, Urusov gambit468.7%45.7%
C42Petrov, classical attack194331.2%57.3%
C42Petrov, classical attack, Berger variation1936.8%55.3%
C42Petrov, classical attack, Chigorin variation102134.4%53.8%
C42Petrov, classical attack, Jaenisch variation341235.0%56.3%
C42Petrov, classical attack, Krause variation1100.0%50.0%
C42Petrov, classical attack, Marshall variation241929.4%55.3%
C42Petrov, classical attack, Mason variation9439.4%63.3%
C42Petrov, classical attack, Tarrasch variation933.3%83.3%
C42Petrov, classical attack, close variation20730.0%55.1%
C43Petrov, modern (Steinitz) attack15324.8%60.8%
C43Petrov, modern attack, Bardeleben variation1717.6%67.6%
C43Petrov, modern attack, Steinitz variation1127.3%59.1%
C43Petrov, modern attack, Symmetrical variation437131.3%53.6%
C43Petrov, modern attack, Trifunovic variation8534.1%51.2%
C43Petrov, modern attack, main line47832.2%58.6%
C41Philidor's defence54028.9%56.9%
C41Philidor, Boden variation1910.5%52.6%
C41Philidor, Hanham variation7234.7%64.6%
C41Philidor, Hanham, Delmar variation850.0%75.0%
C41Philidor, Hanham, Kmoch variation20.0%50.0%
C41Philidor, Hanham, Krause variation3030.0%68.3%
C41Philidor, Hanham, Schlechter variation6726.9%62.7%
C41Philidor, Hanham, Steiner variation3330.3%66.7%
C41Philidor, Improved Hanham variation125627.1%56.8%
C41Philidor, Larsen variation7724.7%68.2%
C41Philidor, Lopez counter-gambit1513.3%80.0%
C41Philidor, Nimzovich (Jaenisch) variation9032.2%48.3%
C41Philidor, Nimzovich variation2937.9%53.4%
C41Philidor, Nimzovich, Klein variation128.3%62.5%
C41Philidor, Nimzovich, Larobok variation5040.0%34.0%
C41Philidor, Nimzovich, Rellstab variation9532.6%64.7%
C41Philidor, Nimzovich, Sokolsky variation520.0%50.0%
C41Philidor, Nimzovich, Sozin variation4517.8%48.9%
C41Philidor, Paulsen attack30.0%100.0%
C41Philidor, Philidor counter-gambit3016.7%51.7%
C41Philidor, Philidor counter-gambit, Zukertort variation1833.3%55.6%
C41Philidor, Philidor counter-gambit, del Rio attack540.0%60.0%
C41Philidor, Steinitz variation1421.4%53.6%
C41Philidor, exchange variation127625.7%57.8%
B07Pirc defence265826.1%54.7%
B07Pirc, 150 attack58630.0%52.6%
B09Pirc, Austrian attack76127.7%58.1%
B09Pirc, Austrian attack, 6.Bd3399830.8%58.0%
B09Pirc, Austrian attack, 6.Be374825.7%55.5%
B09Pirc, Austrian attack, 6.e531029.0%59.7%
B09Pirc, Austrian attack, Ljubojevic variation1526.7%73.3%
B09Pirc, Austrian attack, dragon formation116731.4%53.8%
B07Pirc, Byrne variation43225.0%55.8%
B07Pirc, Chinese variation20.0%50.0%
B07Pirc, Holmov system4431.8%50.0%
B07Pirc, Sveshnikov system103127.4%52.3%
B07Pirc, Ufimtsev-Pytel variation83024.1%55.9%
B07Pirc, bayonet (Mariotti) attack4717.0%51.1%
B08Pirc, classical (two knights) system89028.0%56.5%
B08Pirc, classical system, 5.Be2478731.2%58.3%
B08Pirc, classical, h3 system67130.0%56.4%
A00Polish (Sokolsky) opening148028.2%50.7%
A40Polish defence35324.9%57.2%
A00Polish, Outflank variation27225.0%49.6%
A00Polish, Tuebingen variation7321.9%52.1%
C44Ponziani counter-gambit19820.7%52.3%
C44Ponziani counter-gambit, Cordel variation10.0%100.0%
C44Ponziani counter-gambit, Schmidt attack10.0%0.0%
C44Ponziani opening17425.9%53.7%
C44Ponziani, Caro variation11337.2%48.7%
C44Ponziani, Jaenisch counter-attack68231.8%46.6%
C44Ponziani, Leonhardt variation5639.3%50.0%
C44Ponziani, Reti variation166.3%53.1%
C44Ponziani, Romanishin variation1060.0%60.0%
C44Ponziani, Steinitz variation10540.0%53.3%
A42Pterodactyl defence110927.1%61.7%
D21QGA, 3.Nf3116326.1%55.2%
D20QGA, 3.e4392628.9%56.0%
D26QGA, 4...e684132.2%53.0%
D24QGA, 4.Nc332032.8%54.2%
D25QGA, 4.e355429.1%57.5%
D22QGA, Alekhine defence37233.6%57.4%
D22QGA, Alekhine defence, Alatortsev variation1050.0%65.0%
D21QGA, Alekhine defense, Borisenko-Furman variation3729.7%36.5%
D24QGA, Bogolyubov variation24717.0%47.4%
D21QGA, Ericson variation2842.9%53.6%
D25QGA, Flohr variation6930.4%58.7%
D22QGA, Haberditz variation21634.7%59.0%
D25QGA, Janowsky-Larsen variation70729.1%56.2%
D20QGA, Linares variation6628.8%50.8%
D23QGA, Mannheim variation50431.7%54.6%
D25QGA, Smyslov variation20130.3%57.5%
D26QGA, classical variation130234.3%54.6%
D26QGA, classical variation, 6.O-O40836.8%57.8%
D27QGA, classical, 6...a6491336.0%53.7%
D28QGA, classical, 7...b527134.3%55.2%
D28QGA, classical, 7.Qe213142.0%55.3%
D29QGA, classical, 8...Bb777731.4%47.5%
D26QGA, classical, Furman variation475.0%37.5%
D27QGA, classical, Geller variation8432.1%43.5%
D27QGA, classical, Rubinstein variation387134.2%55.1%
D29QGA, classical, Smyslov variation9628.1%54.7%
D26QGA, classical, Steinitz variation12147.9%60.3%
D30QGD246332.2%52.0%
D51QGD2611.5%67.3%
D52QGD33930.4%56.2%
D30QGD Slav95631.4%52.8%
D15QGD Slav accepted30429.6%51.6%
D16QGD Slav accepted, Alapin variation24422.5%69.5%
D10QGD Slav defence501229.8%54.4%
D10QGD Slav defence, Alekhine variation40720.6%56.0%
D10QGD Slav defence, exchange variation251430.9%51.8%
D11QGD Slav, 3.Nf3487328.2%54.3%
D15QGD Slav, 4.Nc3392928.7%52.7%
D11QGD Slav, 4.e3463030.1%55.3%
D12QGD Slav, 4.e3 Bf5805028.2%54.4%
D15QGD Slav, 5.e3 (Alekhine variation)29925.1%51.0%
D12QGD Slav, Amsterdam variation7335.6%47.9%
D11QGD Slav, Breyer variation26028.1%52.5%
D17QGD Slav, Carlsbad variation68232.7%52.3%
D17QGD Slav, Czech defence88435.7%53.8%
D18QGD Slav, Dutch variation88432.0%57.9%
D19QGD Slav, Dutch variation266629.1%56.4%
D19QGD Slav, Dutch variation, main line48134.7%52.1%
D18QGD Slav, Dutch, Lasker variation2913.8%65.5%
D17QGD Slav, Krause attack83126.1%58.2%
D12QGD Slav, Landau variation1100.0%50.0%
D15QGD Slav, Schlechter variation31128.9%55.6%
D30QGD Slav, Semmering variation18630.1%47.8%
D15QGD Slav, Slav gambit29426.2%47.4%
D16QGD Slav, Smyslov variation12927.1%59.3%
D16QGD Slav, Soultanbeieff variation25038.8%56.6%
D16QGD Slav, Steiner variation35728.9%59.0%
D15QGD Slav, Suechting variation8520.0%53.5%
D15QGD Slav, Tolush-Geller gambit29928.4%44.6%
D17QGD Slav, Wiesbaden variation66127.7%58.5%
D10QGD Slav, Winawer counter-gambit30027.0%56.8%
D12QGD Slav, exchange variation43024.9%53.4%
D13QGD Slav, exchange variation135532.0%53.3%
D14QGD Slav, exchange variation, 6.Bf4 Bf575131.7%51.3%
D14QGD Slav, exchange, Trifunovic variation20540.0%50.2%
D43QGD semi-Slav1913529.2%53.5%
D45QGD semi-Slav, 5...Nd7128426.4%51.4%
D44QGD semi-Slav, 5.Bg5 dc38834.0%49.0%
D45QGD semi-Slav, 5.e3139428.5%56.9%
D46QGD semi-Slav, 6.Bd310729.0%50.9%
D47QGD semi-Slav, 7.Bc480927.6%57.8%
D46QGD semi-Slav, Bogolyubov variation44130.4%56.5%
D44QGD semi-Slav, Botvinnik system (anti-Meran)35524.2%47.9%
D46QGD semi-Slav, Chigorin defence84932.7%53.5%
D44QGD semi-Slav, Ekstrom variation5320.8%38.7%
D43QGD semi-Slav, Hastings variation825.0%25.0%
D48QGD semi-Slav, Meran34323.3%47.8%
D47QGD semi-Slav, Meran variation310831.4%53.0%
D48QGD semi-Slav, Meran, 8...a6639931.0%48.8%
D49QGD semi-Slav, Meran, Blumenfeld variation53529.7%51.5%
D48QGD semi-Slav, Meran, Pirc variation3330.3%63.6%
D49QGD semi-Slav, Meran, Rabinovich variation11340.7%61.1%
D49QGD semi-Slav, Meran, Rellstab attack3633.3%50.0%
D48QGD semi-Slav, Meran, Reynolds' variation133928.7%55.8%
D49QGD semi-Slav, Meran, Sozin variation41239.8%49.0%
D49QGD semi-Slav, Meran, Stahlberg variation8932.6%52.2%
D47QGD semi-Slav, Meran, Wade variation2100429.3%52.9%
D48QGD semi-Slav, Meran, old main line19933.7%57.5%
D46QGD semi-Slav, Romih variation22928.4%64.0%
D45QGD semi-Slav, Rubinstein (anti-Meran) system3135.5%59.7%
D45QGD semi-Slav, Stoltz variation3761530.6%52.4%
D45QGD semi-Slav, accelerated Meran (Alekhine variation)338833.0%53.4%
D44QGD semi-Slav, anti-Meran gambit191026.1%60.0%
D44QGD semi-Slav, anti-Meran, Alatortsev system5111.8%60.8%
D44QGD semi-Slav, anti-Meran, Lilienthal variation48321.3%58.7%
D44QGD semi-Slav, anti-Meran, Szabo variation21220.3%41.3%
D47QGD semi-Slav, neo-Meran (Lundin variation)71231.2%56.2%
D45QGD semi-Slav, stonewall defence2619.2%67.3%
D35QGD, 3...Nf619531.8%44.1%
D31QGD, 3.Nc391828.5%54.8%
D50QGD, 4.Bg531129.3%56.8%
D53QGD, 4.Bg5 Be761235.1%56.5%
D53QGD, 4.Bg5 Be7, 5.e3 O-O2441.7%50.0%
D51QGD, 4.Bg5 Nbd711631.0%56.0%
D37QGD, 4.Nf3635032.3%53.1%
D51QGD, 5...c66923.2%59.4%
D55QGD, 6.Nf334032.6%59.0%
D31QGD, Alapin variation4216.7%41.7%
D08QGD, Albin counter-gambit20735.3%53.9%
D09QGD, Albin counter-gambit, 5.g310631.1%56.1%
D08QGD, Albin counter-gambit, Alapin variation2540.0%60.0%
D08QGD, Albin counter-gambit, Balogh variation10.0%0.0%
D08QGD, Albin counter-gambit, Janowski variation10.0%100.0%
D08QGD, Albin counter-gambit, Krenosz variation250.0%75.0%
D51QGD, Alekhine variation1421.4%53.6%
D54QGD, Anti-neo-orthodox variation3627.8%55.6%
D50QGD, Been-Koomen variation1428.6%42.9%
D52QGD, Cambridge Springs defence7749.4%48.1%
D52QGD, Cambridge Springs defence, 7.cd40832.4%57.6%
D52QGD, Cambridge Springs defence, Argentine variation3221.9%48.4%
D52QGD, Cambridge Springs defence, Bogoljubow variation69129.7%54.3%
D52QGD, Cambridge Springs defence, Capablanca variation3935.9%48.7%
D52QGD, Cambridge Springs defence, Rubinstein variation22431.3%55.4%
D52QGD, Cambridge Springs defence, Yugoslav variation103627.5%58.3%
D50QGD, Canal (Venice) variation30.0%33.3%
D51QGD, Capablanca anti-Cambridge Springs variation1216.7%58.3%
D30QGD, Capablanca variation6020.0%46.7%
D30QGD, Capablanca-Duras variation81628.3%52.4%
D31QGD, Charousek (Petrosian) variation177828.3%53.5%
D07QGD, Chigorin defence228627.6%57.5%
D07QGD, Chigorin defence, Janowski variation56724.0%61.7%
D06QGD, Grau (Sahovic) defence137325.1%56.0%
D35QGD, Harrwitz attack9131.9%50.0%
D30QGD, Hastings variation75035.6%50.6%
D31QGD, Janowski variation19937.7%55.5%
D56QGD, Lasker defence52329.8%52.0%
D57QGD, Lasker defence, Bernstein variation2937.9%50.0%
D56QGD, Lasker defence, Teichmann variation14733.3%60.2%
D57QGD, Lasker defence, main line5034.0%57.0%
D53QGD, Lasker variation520.0%50.0%
D51QGD, Manhattan variation2025.0%52.5%
D06QGD, Marshall defence32926.7%59.6%
D55QGD, Neo-orthodox variation757.1%57.1%
D55QGD, Neo-orthodox variation, 7.Bh452031.9%53.7%
D55QGD, Neo-orthodox variation, 7.Bxf629435.7%51.5%
D60QGD, Orthodox defence31130.9%57.2%
D63QGD, Orthodox defence11024.5%57.7%
D62QGD, Orthodox defence, 7.Qc2 c5, 8.cd (Rubinstein)26841.4%50.2%
D63QGD, Orthodox defence, 7.Rc133533.4%54.9%
D66QGD, Orthodox defence, Bd3 line37430.2%55.7%
D67QGD, Orthodox defence, Bd3 line5942.4%51.7%
D67QGD, Orthodox defence, Bd3 line, 11.O-O18231.3%62.4%
D67QGD, Orthodox defence, Bd3 line, Alekhine variation11348.7%63.3%
D67QGD, Orthodox defence, Bd3 line, Capablanca freeing manoevre10.0%100.0%
D67QGD, Orthodox defence, Bd3 line, Janowski variation757.1%42.9%
D66QGD, Orthodox defence, Bd3 line, fianchetto variation3727.0%64.9%
D60QGD, Orthodox defence, Botvinnik variation23336.1%53.2%
D63QGD, Orthodox defence, Capablanca variation40.0%75.0%
D63QGD, Orthodox defence, Pillsbury attack2445.8%43.8%
D60QGD, Orthodox defence, Rauzer variation2532.0%56.0%
D64QGD, Orthodox defence, Rubinstein attack (with Rc1)17540.0%58.3%
D64QGD, Orthodox defence, Rubinstein attack, Gruenfeld variation10636.8%49.5%
D64QGD, Orthodox defence, Rubinstein attack, Karlsbad variation3036.7%41.7%
D64QGD, Orthodox defence, Rubinstein attack, Wolf variation3441.2%52.9%
D65QGD, Orthodox defence, Rubinstein attack, main line2035.0%42.5%
D61QGD, Orthodox defence, Rubinstein variation51730.2%53.2%
D63QGD, Orthodox defence, Swiss (Henneberger) variation21729.0%50.9%
D63QGD, Orthodox defence, Swiss, Karlsbad variation30129.6%52.3%
D68QGD, Orthodox defence, classical variation13836.2%54.3%
D68QGD, Orthodox defence, classical, 13.d1b1 (Maroczy)771.4%64.3%
D68QGD, Orthodox defence, classical, 13.d1c2 (Vidmar)8236.6%59.8%
D69QGD, Orthodox defence, classical, 13.de2458.3%50.0%
D55QGD, Petrosian variation46438.6%52.7%
D55QGD, Pillsbury attack10.0%0.0%
D38QGD, Ragozin variation740432.3%53.6%
D39QGD, Ragozin, Vienna variation146736.5%50.7%
D51QGD, Rochlin variation10.0%0.0%
D50QGD, Semi-Tarrasch2650.0%59.6%
D40QGD, Semi-Tarrasch defence99633.4%51.8%
D40QGD, Semi-Tarrasch defence, Pillsbury variation4537.8%52.2%
D41QGD, Semi-Tarrasch with e334636.4%54.6%
D41QGD, Semi-Tarrasch, 5.cd92135.3%57.1%
D42QGD, Semi-Tarrasch, 7.Bd362636.9%57.9%
D41QGD, Semi-Tarrasch, Kmoch variation2850.0%60.7%
D50QGD, Semi-Tarrasch, Krause variation250.0%25.0%
D50QGD, Semi-Tarrasch, Primitive Pillsbury variation2528.0%38.0%
D41QGD, Semi-Tarrasch, San Sebastian variation8025.0%68.8%
D40QGD, Semi-Tarrasch, symmetrical variation6333.3%46.8%
D30QGD, Spielmann variation450.0%75.0%
D30QGD, Stonewall variation333.3%83.3%
D32QGD, Tarrasch defence42731.1%54.7%
D32QGD, Tarrasch defence, 4.cd ed3026.7%46.7%
D32QGD, Tarrasch defence, Marshall gambit1936.8%50.0%
D32QGD, Tarrasch defence, Tarrasch gambit728.6%42.9%
D34QGD, Tarrasch, Bogolyubov variation540.0%20.0%
D33QGD, Tarrasch, Folkestone (Swedish) variation5334.0%58.5%
D33QGD, Tarrasch, Prague variation13033.8%60.0%
D34QGD, Tarrasch, Prague variation, 7...Be739930.3%59.3%
D34QGD, Tarrasch, Prague variation, 9.Bg5111438.3%57.7%
D34QGD, Tarrasch, Prague variation, Normal position115134.1%58.2%
D34QGD, Tarrasch, Reti variation6038.3%54.2%
D33QGD, Tarrasch, Schlechter-Rubinstein system1323.1%50.0%
D33QGD, Tarrasch, Schlechter-Rubinstein system, Rey Ardid variation1100.0%50.0%
D34QGD, Tarrasch, Stoltz variation20.0%100.0%
D33QGD, Tarrasch, Wagner variation2429.2%60.4%
D32QGD, Tarrasch, von Hennig-Schara gambit8630.2%58.1%
D58QGD, Tartakower (Makagonov-Bondarevsky) system1261032.5%52.6%
D59QGD, Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd554837.6%51.1%
D59QGD, Tartakower variation19346.6%41.5%
D30QGD, Vienna variation104439.9%52.5%
D37QGD, classical variation (5.Bf4)768533.2%53.4%
D35QGD, exchange variation37231.7%56.2%
D35QGD, exchange, Saemisch variation29028.6%53.3%
D35QGD, exchange, chameleon variation1827.8%63.9%
D35QGD, exchange, positional line236728.0%53.2%
D35QGD, exchange, positional line, 5...c6168128.4%55.6%
D36QGD, exchange, positional line, 6.Qc237733.4%51.2%
D31QGD, semi-Slav128030.9%54.1%
D31QGD, semi-Slav, Abrahams variation71030.0%44.4%
D31QGD, semi-Slav, Junge variation2920.7%62.1%
D31QGD, semi-Slav, Koomen variation450.0%50.0%
D31QGD, semi-Slav, Marshall gambit262328.9%54.9%
D31QGD, semi-Slav, Noteboom variation70328.4%52.2%
D06QGD, symmetrical (Austrian) defence10029.0%54.5%
C40QP counter-gambit (elephant gambit)17517.1%62.9%
C40QP counter-gambit, Maroczy gambit6524.6%61.5%
D06Queen's Gambit2119.0%57.1%
A50Queen's Indian accelerated29631.8%54.4%
A47Queen's Indian defence95728.1%53.4%
E12Queen's Indian defence51029.2%51.1%
E12Queen's Indian, 4.Nc3678529.1%52.6%
E12Queen's Indian, 4.Nc3, Botvinnik variation11128.8%49.5%
E13Queen's Indian, 4.Nc3, main line35925.9%55.6%
E14Queen's Indian, 4.e3272729.8%52.1%
E15Queen's Indian, 4.g3180741.0%55.2%
E15Queen's Indian, 4.g3 Bb724531.0%52.7%
E17Queen's Indian, 5.Bg2 Be79333.3%48.9%
E14Queen's Indian, Averbakh variation728.6%28.6%
E15Queen's Indian, Buerger variation2821.4%53.6%
E16Queen's Indian, Capablanca variation40432.9%57.5%
E17Queen's Indian, Euwe variation10436.5%60.6%
A47Queen's Indian, Marienbad system14130.5%49.3%
A47Queen's Indian, Marienbad system, Berg variation922.2%55.6%
E12Queen's Indian, Miles variation140131.6%53.0%
E15Queen's Indian, Nimzovich variation (exaggerated fianchetto)3141629.4%54.9%
E17Queen's Indian, Opovcensky variation130729.9%58.0%
E12Queen's Indian, Petrosian system1129931.9%53.4%
E16Queen's Indian, Riumin variation41632.2%56.0%
E15Queen's Indian, Rubinstein variation12222.1%51.2%
E16Queen's Indian, Yates variation77631.6%58.8%
E17Queen's Indian, anti-Queen's Indian system27933.7%53.4%
E17Queen's Indian, old main line, 6.O-O88330.2%56.6%
E18Queen's Indian, old main line, 7.Nc3301732.9%55.9%
E19Queen's Indian, old main line, 9.Qxc3168533.1%54.7%
A41Queen's Pawn481423.1%56.1%
D02Queen's bishop game343627.9%51.0%
D20Queen's gambit accepted195930.6%55.2%
D23Queen's gambit accepted18129.8%49.7%
D30Queen's gambit declined636530.5%53.3%
A40Queen's pawn549725.8%53.6%
A45Queen's pawn game519426.3%51.2%
A46Queen's pawn game606227.5%53.9%
A50Queen's pawn game192728.3%55.8%
D00Queen's pawn game198425.1%51.3%
D02Queen's pawn game1391827.5%52.9%
D04Queen's pawn game217330.4%53.3%
D05Queen's pawn game191628.6%53.6%
E00Queen's pawn game146127.7%53.9%
E10Queen's pawn game650031.5%54.3%
D02Queen's pawn game, Chigorin variation161524.3%54.6%
D02Queen's pawn game, Krause variation82733.6%51.8%
D05Queen's pawn game, Rubinstein (Colle-Zukertort) variation76132.3%55.6%
D05Queen's pawn game, Zukertort variation3327.3%59.1%
A45Queen's pawn, Bronstein gambit1711.8%47.1%
A40Queen's pawn, Charlick (Englund) gambit60.0%83.3%
D00Queen's pawn, Chigorin variation148721.9%51.8%
A40Queen's pawn, English defence53021.1%54.9%
A40Queen's pawn, Franco-Indian (Keres) defence326828.8%55.6%
A40Queen's pawn, Keres defence353027.7%55.3%
A40Queen's pawn, Lundin (Kevitz-Mikenas) defence66326.8%56.6%
D00Queen's pawn, Mason variation192824.5%51.9%
D00Queen's pawn, Mason variation, Steinitz counter-gambit57430.3%50.2%
E60Queen's pawn, Mengarini attack14024.3%50.7%
A46Queen's pawn, Torre attack133126.6%51.9%
A46Queen's pawn, Torre attack, Wagner gambit2718.5%38.9%
A46Queen's pawn, Yusupov-Rubinstein system126830.2%51.1%
D00Queen's pawn, stonewall attack10025.0%49.5%
A09Reti accepted126327.7%53.0%
A09Reti accepted, Keres variation12121.5%59.5%
A04Reti opening1485427.7%52.9%
A05Reti opening944028.6%52.6%
A06Reti opening318826.6%53.3%
A09Reti opening101727.1%53.5%
A04Reti v Dutch226425.7%56.3%
A05Reti, King's Indian attack218029.9%55.4%
A07Reti, King's Indian attack324733.9%52.9%
A08Reti, King's Indian attack112029.5%54.8%
A07Reti, King's Indian attack (Barcza system)989529.6%53.0%
A07Reti, King's Indian attack (with ...c5)43125.8%48.4%
A08Reti, King's Indian attack, French variation112530.8%50.9%
A07Reti, King's Indian attack, Keres variation74630.8%51.9%
A07Reti, King's Indian attack, Pachman system25323.3%52.0%
A05Reti, King's Indian attack, Reti-Smyslov variation14527.6%50.3%
A05Reti, King's Indian attack, Spassky's variation79229.9%53.0%
A07Reti, King's Indian attack, Yugoslav variation479931.3%53.8%
A04Reti, Lisitsin gambit deferred5820.7%43.1%
A06Reti, Nimzovich-Larsen attack400531.3%50.9%
A04Reti, Pirc-Lisitsin gambit15822.2%58.5%
A04Reti, Wade defence540.0%80.0%
A09Reti, advance variation154825.6%47.8%
A06Reti, old Indian attack32124.0%52.5%
B00Reversed Grob (Borg/Basman defence/macho Grob)16917.2%51.8%
D01Richter-Veresov attack119926.3%46.6%
D01Richter-Veresov attack, Richter variation5334.0%37.7%
D01Richter-Veresov attack, Veresov variation5520.0%55.5%
B06Robatsch (modern) defence980829.5%56.3%
B06Robatsch defence125028.1%59.0%
B07Robatsch defence, Geller's system154329.9%56.9%
B06Robatsch defence, Gurgenidze variation75924.4%64.0%
B06Robatsch defence, Pseudo-Austrian attack95225.5%59.3%
A41Robatsch defence, Rossolimo variation17227.3%54.4%
B06Robatsch defence, Two knights variation58929.7%57.8%
B06Robatsch defence, Two knights, Suttles variation245934.4%58.2%
B06Robatsch defence, three pawns attack9916.2%54.5%
C50Rousseau gambit50.0%60.0%
C70Ruy Lopez7628.9%52.6%
C60Ruy Lopez (Spanish opening)15523.2%52.3%
C78Ruy Lopez, ...b5 & ...d69326.9%48.9%
C78Ruy Lopez, 5.O-O257431.7%55.0%
C70Ruy Lopez, Alapin's defence deferred70.0%42.9%
C77Ruy Lopez, Anderssen variation137030.1%49.6%
C78Ruy Lopez, Archangelsk (counterthrust) variation342829.5%54.4%
C65Ruy Lopez, Berlin defence446729.8%51.3%
C65Ruy Lopez, Berlin defence, 4.O-O19626.5%62.8%
C66Ruy Lopez, Berlin defence, 4.O-O, d610240.2%52.5%
C65Ruy Lopez, Berlin defence, Anderssen variation616.7%8.3%
C65Ruy Lopez, Berlin defence, Beverwijk variation55130.1%53.0%
C67Ruy Lopez, Berlin defence, Cordel variation3743.2%51.4%
C65Ruy Lopez, Berlin defence, Duras variation3135.5%46.8%
C65Ruy Lopez, Berlin defence, Kaufmann variation1118.2%45.5%
C67Ruy Lopez, Berlin defence, Minckwitz variation5339.6%63.2%
C65Ruy Lopez, Berlin defence, Mortimer variation1811.1%66.7%
C65Ruy Lopez, Berlin defence, Nyholm attack8835.2%54.0%
C67Ruy Lopez, Berlin defence, Pillsbury variation366.7%33.3%
C67Ruy Lopez, Berlin defence, Rio de Janeiro variation850.0%75.0%
C67Ruy Lopez, Berlin defence, Rosenthal variation4042.5%53.8%
C67Ruy Lopez, Berlin defence, Trifunovic variation30.0%100.0%
C67Ruy Lopez, Berlin defence, Winawer attack1070.0%45.0%
C67Ruy Lopez, Berlin defence, Zukertort variation1457.1%42.9%
C66Ruy Lopez, Berlin defence, hedgehog variation15437.7%53.2%
C67Ruy Lopez, Berlin defence, open variation763634.3%52.6%
C61Ruy Lopez, Bird's defence32528.0%58.6%
C61Ruy Lopez, Bird's defence, Paulsen variation1631.3%46.9%
C60Ruy Lopez, Brentano defence616.7%58.3%
C70Ruy Lopez, Caro variation8431.0%52.4%
C70Ruy Lopez, Classical defence deferred52126.5%51.8%
C64Ruy Lopez, Cordel gambit4926.5%74.5%
C60Ruy Lopez, Cozio defence39127.1%57.5%
C70Ruy Lopez, Cozio defence deferred14535.2%52.8%
C60Ruy Lopez, Cozio defence, Paulsen variation3537.1%52.9%
C85Ruy Lopez, Exchange variation doubly deferred (DERLD)156331.0%53.3%
C70Ruy Lopez, Graz variation933.3%61.1%
C60Ruy Lopez, Lucena defence2321.7%45.7%
C89Ruy Lopez, Marshall counter-attack299433.6%51.4%
C89Ruy Lopez, Marshall counter-attack, 11...c692234.9%48.7%
C89Ruy Lopez, Marshall, Herman Steiner variation326.3%50.0%
C89Ruy Lopez, Marshall, Kevitz variation1428.6%42.9%
C89Ruy Lopez, Marshall, main line, 12.d2d4110827.4%55.9%
C89Ruy Lopez, Marshall, main line, 14...Qh382142.1%48.8%
C89Ruy Lopez, Marshall, main line, Spassky variation1100.0%50.0%
C78Ruy Lopez, Moeller defence78430.0%52.1%
C77Ruy Lopez, Morphy defence40532.8%54.4%
C77Ruy Lopez, Morphy defence, Duras variation10131.7%47.5%
C88Ruy Lopez, Noah's ark trap50.0%60.0%
C60Ruy Lopez, Nuernberg variation1936.8%44.7%
C78Ruy Lopez, Rabinovich variation10.0%100.0%
C63Ruy Lopez, Schliemann defence36526.8%56.7%
C70Ruy Lopez, Schliemann defence deferred4515.6%56.7%
C63Ruy Lopez, Schliemann defence, Berger variation67533.5%55.9%
C74Ruy Lopez, Siesta, Kopayev variation12627.8%52.8%
C79Ruy Lopez, Steinitz defence deferred (Russian defence)35432.8%52.0%
C79Ruy Lopez, Steinitz defence deferred, Lipnitsky variation1844.4%50.0%
C79Ruy Lopez, Steinitz defence deferred, Rubinstein variation1216.7%66.7%
C70Ruy Lopez, Taimanov (chase/wing/accelerated counterthrust) variation25426.8%54.7%
C88Ruy Lopez, Trajkovic counter-attack28627.3%53.1%
C77Ruy Lopez, Treybal (Bayreuth) variation (exchange var. deferred)19331.1%50.8%
C60Ruy Lopez, Vinogradov variation933.3%50.0%
C78Ruy Lopez, Wing attack2045.0%62.5%
C77Ruy Lopez, Wormald (Alapin) attack65633.1%50.7%
C77Ruy Lopez, Wormald attack, Gruenfeld variation366.7%66.7%
C86Ruy Lopez, Worrall attack9328.0%58.1%
C86Ruy Lopez, Worrall attack, sharp line27432.5%49.5%
C86Ruy Lopez, Worrall attack, solid line25030.4%50.8%
C64Ruy Lopez, classical (Cordel) defence68031.8%51.6%
C64Ruy Lopez, classical defence, 4.c344228.1%52.5%
C64Ruy Lopez, classical defence, Benelux variation 56933.6%50.9%
C64Ruy Lopez, classical defence, Boden variation1100.0%50.0%
C64Ruy Lopez, classical defence, Charousek variation2025.0%67.5%
C88Ruy Lopez, closed409927.3%48.2%
C96Ruy Lopez, closed (10...c5)121529.7%58.9%
C96Ruy Lopez, closed (8...Na5)5225.0%52.9%
C90Ruy Lopez, closed (with ...d6)239927.6%49.3%
C66Ruy Lopez, closed Berlin defence, Bernstein variation3438.2%45.6%
C66Ruy Lopez, closed Berlin defence, Chigorin variation40.0%75.0%
C66Ruy Lopez, closed Berlin defence, Showalter variation6349.2%59.5%
C66Ruy Lopez, closed Berlin defence, Wolf variation12840.6%55.5%
C84Ruy Lopez, closed defence117932.1%52.0%
C88Ruy Lopez, closed, 7...O-O742630.1%51.7%
C88Ruy Lopez, closed, 7...d6, 8.d412623.8%38.1%
C88Ruy Lopez, closed, 8.c34427.3%50.0%
C91Ruy Lopez, closed, 9.d4377226.9%55.7%
C92Ruy Lopez, closed, 9.h355726.6%55.8%
C87Ruy Lopez, closed, Averbach variation39129.9%57.4%
C88Ruy Lopez, closed, Balla variation2937.9%63.8%
C91Ruy Lopez, closed, Bogolyubov variation616932.0%51.9%
C96Ruy Lopez, closed, Borisenko defence8228.0%57.9%
C94Ruy Lopez, closed, Breyer defence12237.7%53.3%
C95Ruy Lopez, closed, Breyer, Borisenko variation232630.2%56.3%
C95Ruy Lopez, closed, Breyer, Gligoric variation6920.3%65.2%
C95Ruy Lopez, closed, Breyer, Simagin variation7742.9%63.0%
C97Ruy Lopez, closed, Chigorin defence172523.0%60.0%
C98Ruy Lopez, closed, Chigorin, 12...Nc625925.9%63.9%
C99Ruy Lopez, closed, Chigorin, 12...c5d4206834.2%59.0%
C98Ruy Lopez, closed, Chigorin, Rauzer attack10.0%0.0%
C92Ruy Lopez, closed, Flohr-Zaitsev system (Lenzerheide variation)352132.5%53.7%
C96Ruy Lopez, closed, Keres (...Nd7) defence32438.0%61.0%
C92Ruy Lopez, closed, Keres (9...a5) variation4723.4%58.5%
C92Ruy Lopez, closed, Kholmov variation19426.8%58.8%
C90Ruy Lopez, closed, Lutikov variation2650.0%51.9%
C90Ruy Lopez, closed, Pilnik variation306826.1%52.2%
C92Ruy Lopez, closed, Ragozin-Petrosian (`Keres') variation30733.2%64.5%
C96Ruy Lopez, closed, Rossolimo defence520.0%70.0%
C93Ruy Lopez, closed, Smyslov defence24833.5%57.5%
C90Ruy Lopez, closed, Suetin variation5425.9%48.1%
C88Ruy Lopez, closed, anti-Marshall 8.a4157728.7%51.8%
C84Ruy Lopez, closed, centre attack22031.4%50.2%
C68Ruy Lopez, exchange variation32425.3%57.4%
C69Ruy Lopez, exchange variation, 5.O-O63228.2%53.2%
C69Ruy Lopez, exchange variation, Alapin gambit14532.4%51.4%
C68Ruy Lopez, exchange, Alekhine variation7631.6%43.4%
C69Ruy Lopez, exchange, Bronstein variation50230.9%51.7%
C69Ruy Lopez, exchange, Gligoric variation58834.4%53.7%
C68Ruy Lopez, exchange, Keres variation25136.7%52.2%
C68Ruy Lopez, exchange, Romanovsky variation1118.2%45.5%
C60Ruy Lopez, fianchetto (Smyslov/Barnes) defence47234.7%53.0%
C70Ruy Lopez, fianchetto defence deferred1540.0%73.3%
C77Ruy Lopez, four knights (Tarrasch) variation29830.5%55.5%
C71Ruy Lopez, modern Steinitz defence14129.1%51.4%
C74Ruy Lopez, modern Steinitz defence6541.5%56.2%
C75Ruy Lopez, modern Steinitz defence29627.4%57.9%
C72Ruy Lopez, modern Steinitz defence, 5.O-O50529.7%55.8%
C73Ruy Lopez, modern Steinitz defence, Alapin variation29725.6%55.6%
C71Ruy Lopez, modern Steinitz defence, Duras (Keres) variation18732.6%52.1%
C73Ruy Lopez, modern Steinitz defence, Richter variation23431.6%50.9%
C75Ruy Lopez, modern Steinitz defence, Rubinstein variation14132.6%58.9%
C71Ruy Lopez, modern Steinitz defence, Three knights variation2825.0%58.9%
C76Ruy Lopez, modern Steinitz defence, fianchetto (Bronstein) variation59328.2%51.0%
C74Ruy Lopez, modern Steinitz defence, siesta variation4626.1%47.8%
C62Ruy Lopez, old Steinitz defence62527.8%54.2%
C62Ruy Lopez, old Steinitz defence, Nimzovich attack2817.9%69.6%
C62Ruy Lopez, old Steinitz defence, semi-Duras variation30.0%100.0%
C80Ruy Lopez, open (Tarrasch) defence12339.0%49.6%
C67Ruy Lopez, open Berlin defence, 5...Be711333.6%55.8%
C67Ruy Lopez, open Berlin defence, Showalter variation425.0%62.5%
C67Ruy Lopez, open Berlin defence, l'Hermet variation9334.4%45.2%
C80Ruy Lopez, open, 6.d44727.7%60.6%
C80Ruy Lopez, open, 7.Bb349430.8%52.0%
C80Ruy Lopez, open, 8...Be6132132.0%46.1%
C80Ruy Lopez, open, 8.de1520.0%56.7%
C83Ruy Lopez, open, 9...Be7, 10.Re12231.8%56.8%
C82Ruy Lopez, open, 9.c3616.7%58.3%
C80Ruy Lopez, open, Berger variation666.7%33.3%
C82Ruy Lopez, open, Berlin variation1833.3%61.1%
C80Ruy Lopez, open, Bernstein variation95636.0%58.2%
C80Ruy Lopez, open, Bernstein variation, Karpov gambit1163.6%68.2%
C83Ruy Lopez, open, Breslau variation50.0%80.0%
C82Ruy Lopez, open, Dilworth variation8327.7%53.6%
C80Ruy Lopez, open, Friess attack850.0%37.5%
C80Ruy Lopez, open, Harksen gambit50.0%60.0%
C81Ruy Lopez, open, Howell attack9537.9%57.9%
C81Ruy Lopez, open, Howell attack, Ekstroem variation1752.9%61.8%
C82Ruy Lopez, open, Italian variation8831.8%61.4%
C83Ruy Lopez, open, Malkin variation1330.8%69.2%
C82Ruy Lopez, open, Motzko attack8439.3%51.8%
C82Ruy Lopez, open, Motzko attack, Nenarokov variation742.9%35.7%
C80Ruy Lopez, open, Richter variation30.0%33.3%
C80Ruy Lopez, open, Riga variation4030.0%57.5%
C80Ruy Lopez, open, Schlechter defence2339.1%32.6%
C82Ruy Lopez, open, St. Petersburg variation27838.1%59.4%
C80Ruy Lopez, open, Tartakower variation1136.4%63.6%
C80Ruy Lopez, open, Zukertort variation714.3%50.0%
C83Ruy Lopez, open, classical defence18538.9%57.8%
A06Santasiere's folly13536.3%45.6%
A00Saragossa opening92219.4%50.5%
B01Scandinavian (centre counter) defence484927.3%59.7%
B01Scandinavian defence148529.6%57.6%
B01Scandinavian defence, Gruenfeld variation1435.7%53.6%
B01Scandinavian defence, Lasker variation15027.3%64.3%
B01Scandinavian gambit18931.2%46.8%
B01Scandinavian, Anderssen counter-attack250.0%75.0%
B01Scandinavian, Anderssen counter-attack, Goteborg system50.0%100.0%
B01Scandinavian, Icelandic gambit7530.7%50.0%
B01Scandinavian, Kiel variation520.0%90.0%
B01Scandinavian, Marshall variation90128.1%60.1%
B01Scandinavian, Mieses-Kotrvc gambit267.7%50.0%
B01Scandinavian, Pytel-Wade variation286133.9%59.9%
B01Scandinavian, Richter variation1822.2%72.2%
C44Scotch gambit10125.7%49.5%
C44Scotch gambit, Anderssen (Paulsen, Suhle) counter-attack1100.0%50.0%
C44Scotch gambit, Benima defence6028.3%52.5%
C44Scotch gambit, Dubois-Reti defence61631.3%49.9%
C45Scotch game351131.7%53.3%
C44Scotch opening4526.7%42.2%
C45Scotch, Blackburne attack2157.1%52.4%
C45Scotch, Blumenfeld attack1040.0%20.0%
C45Scotch, Ghulam Kassim variation333.3%83.3%
C44Scotch, Goering gambit17631.3%49.7%
C44Scotch, Goering gambit, Bardeleben variation1020.0%40.0%
C45Scotch, Horwitz attack3336.4%54.5%
C44Scotch, Lolli variation7718.2%53.2%
C45Scotch, Meitner variation4235.7%53.6%
C45Scotch, Mieses variation204333.2%51.0%
C45Scotch, Paulsen attack1428.6%28.6%
C45Scotch, Potter variation27335.2%47.6%
C45Scotch, Pulling counter-attack2718.5%61.1%
C44Scotch, Relfsson gambit ('MacLopez')4012.5%46.3%
C45Scotch, Romanishin variation3228.1%45.3%
C45Scotch, Rosenthal variation10.0%0.0%
C45Scotch, Schmidt variation99939.8%50.7%
C45Scotch, Steinitz variation5521.8%45.5%
C45Scotch, Tartakower variation1637.5%56.3%
A44Semi-Benoni (`blockade variation')105621.3%61.2%
B50Sicilian513727.9%52.7%
B54Sicilian103726.2%54.1%
B56Sicilian514726.3%54.4%
B20Sicilian defence604024.1%48.6%
B27Sicilian defence11230.4%59.8%
B30Sicilian defence415428.6%52.2%
B32Sicilian defence101328.0%52.4%
B33Sicilian defence97829.2%52.8%
B40Sicilian defence854328.8%52.5%
B44Sicilian defence42729.5%52.9%
B22Sicilian, 2.c3, Heidenfeld variation4526.7%44.4%
B27Sicilian, Acton extension1323.1%57.7%
B22Sicilian, Alapin's variation (2.c3)1676631.7%54.0%
B40Sicilian, Anderssen variation219531.8%55.6%
B21Sicilian, Andreaschek gambit1844.4%61.1%
B58Sicilian, Boleslavsky variation88033.2%49.0%
B59Sicilian, Boleslavsky variation, 7.Nb315539.4%53.9%
B58Sicilian, Boleslavsky, Louma variation4032.5%61.3%
B51Sicilian, Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack262130.3%55.5%
B52Sicilian, Canal-Sokolsky attack, 3...Bd7148134.9%50.5%
B52Sicilian, Canal-Sokolsky attack, Bronstein gambit16627.1%43.1%
B52Sicilian, Canal-Sokolsky attack, Sokolsky variation112333.6%54.2%
B53Sicilian, Chekhover variation93936.6%49.6%
B53Sicilian, Chekhover, Zaitsev variation4517.8%53.3%
B32Sicilian, Flohr variation14427.8%56.9%
B20Sicilian, Gloria variation922.2%55.6%
B21Sicilian, Grand Prix attack209025.5%49.5%
B23Sicilian, Grand Prix attack57226.4%52.5%
B23Sicilian, Grand Prix attack, Schofman variation1827.8%30.6%
B27Sicilian, Hungarian variation1024433.6%57.2%
B41Sicilian, Kan variation27529.1%54.5%
B42Sicilian, Kan, 5.Bd3436229.2%56.8%
B43Sicilian, Kan, 5.Nc3595928.9%55.3%
B42Sicilian, Kan, Gipslis variation19329.0%57.0%
B41Sicilian, Kan, Maroczy bind (Reti variation)79528.9%54.1%
B41Sicilian, Kan, Maroczy bind - Bronstein variation5928.8%56.8%
B42Sicilian, Kan, Polugaievsky variation285826.8%54.3%
B42Sicilian, Kan, Swiss cheese variation29927.8%56.7%
B27Sicilian, Katalimov variation16425.6%53.7%
B20Sicilian, Keres variation (2.Ne2)114325.7%53.1%
B32Sicilian, Labourdonnais-Loewenthal (Kalashnikov) variation167029.3%54.0%
B32Sicilian, Labourdonnais-Loewenthal variation31727.1%54.6%
B57Sicilian, Magnus Smith trap4129.3%53.7%
B40Sicilian, Marshall variation2416.7%41.7%
B90Sicilian, Najdorf1186524.9%51.1%
B98Sicilian, Najdorf variation21125.1%49.1%
B95Sicilian, Najdorf, 6...e6134427.0%53.4%
B94Sicilian, Najdorf, 6.Bg5157025.2%52.9%
B93Sicilian, Najdorf, 6.f4249229.3%49.4%
B98Sicilian, Najdorf, 7...Be726525.7%52.5%
B99Sicilian, Najdorf, 7...Be7 main line159422.0%54.5%
B97Sicilian, Najdorf, 7...Qb6245523.7%46.5%
B96Sicilian, Najdorf, 7.f4188723.4%49.0%
B90Sicilian, Najdorf, Adams attack255023.6%53.0%
B98Sicilian, Najdorf, Browne variation9632.3%57.8%
B90Sicilian, Najdorf, Byrne (English) attack4847624.8%51.5%
B98Sicilian, Najdorf, Goteborg (Argentine) variation1435.7%46.4%
B90Sicilian, Najdorf, Lipnitzky attack225328.9%48.6%
B92Sicilian, Najdorf, Opovcensky variation1098929.8%52.5%
B97Sicilian, Najdorf, Poisoned pawn variation333627.2%44.4%
B96Sicilian, Najdorf, Polugayevsky variation13324.8%52.3%
B96Sicilian, Najdorf, Polugayevsky, Simagin variation4520.0%52.2%
B91Sicilian, Najdorf, Zagreb (fianchetto) variation139127.2%51.1%
B32Sicilian, Nimzovich variation2814.3%53.6%
B31Sicilian, Nimzovich-Rossolimo attack (with ...g6, without ...d6)398430.2%55.5%
B30Sicilian, Nimzovich-Rossolimo attack (without ...d6)652729.0%54.5%
B31Sicilian, Nimzovich-Rossolimo attack, Gurgenidze variation1145.5%40.9%
B29Sicilian, Nimzovich-Rubinstein variation52029.2%56.2%
B29Sicilian, Nimzovich-Rubinstein; Rubinstein counter-gambit6535.4%56.2%
B28Sicilian, O'Kelly variation81228.3%57.0%
B33Sicilian, Pelikan (Lasker/Sveshnikov) variation113823.9%53.5%
B33Sicilian, Pelikan, Bird variation26927.5%59.1%
B33Sicilian, Pelikan, Chelyabinsk variation569926.9%55.2%
B40Sicilian, Pin variation (Sicilian counter-attack)10220.6%55.4%
B40Sicilian, Pin, Jaffe variation40.0%100.0%
B40Sicilian, Pin, Koch variation13226.5%70.1%
B54Sicilian, Prins (Moscow) variation46030.9%52.4%
B55Sicilian, Prins variation, Venice attack11937.0%56.3%
B27Sicilian, Quinteros variation9818.4%59.2%
B60Sicilian, Richter-Rauzer134225.9%57.5%
B62Sicilian, Richter-Rauzer, 6...e617826.4%48.6%
B60Sicilian, Richter-Rauzer, Bondarevsky variation2433.3%54.2%
B62Sicilian, Richter-Rauzer, Keres variation54330.4%53.9%
B60Sicilian, Richter-Rauzer, Larsen variation34423.5%55.1%
B61Sicilian, Richter-Rauzer, Larsen variation, 7.Qd259427.8%60.2%
B62Sicilian, Richter-Rauzer, Margate (Alekhine) variation51532.8%49.6%
B62Sicilian, Richter-Rauzer, Podvebrady variation3327.3%53.0%
B63Sicilian, Richter-Rauzer, Rauzer attack45726.7%55.8%
B63Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7208227.8%52.1%
B65Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9...Nxd4151630.6%56.8%
B64Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9.f461632.6%54.5%
B66Sicilian, Richter-Rauzer, Rauzer attack, 7...a61486425.0%51.2%
B69Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 11.Bxf644823.9%57.3%
B67Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 8...Bd7708625.1%52.6%
B68Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 9...Be724027.9%56.0%
B64Sicilian, Richter-Rauzer, Rauzer attack, Geller variation214.8%73.8%
B62Sicilian, Richter-Rauzer, Richter attack10.0%0.0%
B84Sicilian, Scheveningen (Paulsen), classical variation909329.0%51.7%
B80Sicilian, Scheveningen variation141724.0%53.7%
B83Sicilian, Scheveningen, 6.Be282131.1%51.1%
B82Sicilian, Scheveningen, 6.f478029.9%55.7%
B80Sicilian, Scheveningen, English variation58525.0%50.8%
B81Sicilian, Scheveningen, Keres attack469125.9%58.9%
B82Sicilian, Scheveningen, Tal variation19318.1%60.4%
B80Sicilian, Scheveningen, Vitolins variation11019.1%44.1%
B85Sicilian, Scheveningen, classical24739.3%52.8%
B85Sicilian, Scheveningen, classical main line70540.0%54.0%
B85Sicilian, Scheveningen, classical variation with ...Qc7 and ...Nc62321.7%50.0%
B85Sicilian, Scheveningen, classical, Maroczy system6633.3%54.5%
B84Sicilian, Scheveningen, classical, Nd7 system8625.6%52.3%
B80Sicilian, Scheveningen, fianchetto variation52928.4%51.6%
B21Sicilian, Smith-Morra gambit100528.3%50.0%
B86Sicilian, Sozin attack23424.8%44.9%
B87Sicilian, Sozin with ...a6 and ...b5137527.6%48.4%
B89Sicilian, Sozin, 7.Be3425526.8%49.0%
B57Sicilian, Sozin, Benko variation512329.4%51.0%
B88Sicilian, Sozin, Fischer variation4250.0%51.2%
B88Sicilian, Sozin, Leonhardt variation66633.0%49.5%
B57Sicilian, Sozin, not Scheveningen54529.4%55.2%
B20Sicilian, Steinitz variation119525.4%53.7%
B27Sicilian, Stiletto (Althouse) variation1414.3%71.4%
B33Sicilian, Sveshnikov variation310026.4%52.8%
B44Sicilian, Szen (`anti-Taimanov') variation97631.5%51.5%
B44Sicilian, Szen variation, Dely-Kasparov gambit2441.7%54.2%
B44Sicilian, Szen, hedgehog variation41330.0%48.2%
B47Sicilian, Taimanov (Bastrikov) variation1094630.7%54.3%
B45Sicilian, Taimanov variation447027.3%54.4%
B46Sicilian, Taimanov variation561028.8%54.7%
B48Sicilian, Taimanov variation697227.8%54.1%
B49Sicilian, Taimanov variation222131.2%55.2%
B45Sicilian, Taimanov, American attack1952.6%42.1%
B89Sicilian, Velimirovic attack169424.4%50.9%
B56Sicilian, Venice attack64634.4%63.2%
B39Sicilian, accelerated fianchetto, Breyer variation149832.9%60.9%
B36Sicilian, accelerated fianchetto, Gurgenidze variation36038.1%53.5%
B36Sicilian, accelerated fianchetto, Maroczy bind142035.7%55.9%
B37Sicilian, accelerated fianchetto, Maroczy bind, 5...Bg732734.6%52.8%
B38Sicilian, accelerated fianchetto, Maroczy bind, 6.Be3291638.8%57.2%
B37Sicilian, accelerated fianchetto, Simagin variation1030.0%45.0%
B34Sicilian, accelerated fianchetto, exchange variation2733.3%42.6%
B34Sicilian, accelerated fianchetto, modern variation114432.6%51.7%
B35Sicilian, accelerated fianchetto, modern variation with Bc4451334.3%53.6%
B23Sicilian, chameleon variation114227.7%55.3%
B58Sicilian, classical73635.2%52.0%
B23Sicilian, closed568026.6%53.0%
B24Sicilian, closed59627.9%49.2%
B25Sicilian, closed25330.0%49.8%
B23Sicilian, closed, 2...Nc6330927.7%53.1%
B26Sicilian, closed, 6.Be352525.1%47.8%
B25Sicilian, closed, 6.Ne2 e5 (Botvinnik)9515.8%53.2%
B25Sicilian, closed, 6.f484129.3%50.2%
B25Sicilian, closed, 6.f4 e5 (Botvinnik)9524.2%47.9%
B23Sicilian, closed, Korchnoi variation34933.2%48.4%
B24Sicilian, closed, Smyslov variation1145.5%68.2%
B70Sicilian, dragon variation76629.8%50.0%
B72Sicilian, dragon, 6.Be324828.2%50.0%
B71Sicilian, dragon, Levenfish variation7935.4%46.8%
B71Sicilian, dragon, Levenfish; Flohr variation425.0%62.5%
B75Sicilian, dragon, Yugoslav attack38929.3%51.7%
B78Sicilian, dragon, Yugoslav attack, 10.O-O-O106224.1%54.3%
B79Sicilian, dragon, Yugoslav attack, 12.h414531.0%64.5%
B76Sicilian, dragon, Yugoslav attack, 7...O-O60430.0%51.1%
B77Sicilian, dragon, Yugoslav attack, 9...Bd746525.6%55.2%
B77Sicilian, dragon, Yugoslav attack, 9.Bc49630.2%53.6%
B77Sicilian, dragon, Yugoslav attack, Byrne variation50.0%80.0%
B76Sicilian, dragon, Yugoslav attack, Rauser variation134026.0%59.3%
B72Sicilian, dragon, classical attack8528.2%57.6%
B73Sicilian, dragon, classical, 8.O-O22435.7%55.4%
B74Sicilian, dragon, classical, 9.Nb322833.8%49.8%
B74Sicilian, dragon, classical, Alekhine variation3522.9%62.9%
B72Sicilian, dragon, classical, Amsterdam variation6338.1%44.4%
B72Sicilian, dragon, classical, Grigoriev variation850.0%62.5%
B72Sicilian, dragon, classical, Nottingham variation8328.9%45.8%
B74Sicilian, dragon, classical, Reti-Tartakower variation20034.0%52.5%
B73Sicilian, dragon, classical, Richter variation20136.8%48.8%
B74Sicilian, dragon, classical, Spielmann variation6628.8%53.8%
B73Sicilian, dragon, classical, Zollner gambit1735.3%23.5%
B83Sicilian, modern Scheveningen84130.4%50.1%
B83Sicilian, modern Scheveningen, main line70335.8%52.6%
B83Sicilian, modern Scheveningen, main line with Nb316023.1%49.7%
B20Sicilian, wing gambit8023.8%45.6%
B50Sicilian, wing gambit deferred3619.4%45.8%
B20Sicilian, wing gambit, Carlsbad variation2416.7%58.3%
B20Sicilian, wing gambit, Marshall variation39727.5%40.9%
B20Sicilian, wing gambit, Santasiere variation250.0%75.0%
B00St. George (Baker) defence18721.9%53.7%
C00St. George defence63626.6%55.3%
C44Tayler opening728.6%28.6%
A06Tennison (Lemberg, Zukertort) gambit1921.1%57.9%
C46Three knights game25923.9%52.5%
C46Three knights, Schlechter variation1338.5%65.4%
C46Three knights, Steinitz variation15518.7%53.2%
C46Three knights, Steinitz, Rosenthal variation1361.5%61.5%
D03Torre attack (Tartakower variation)92323.2%50.5%
A45Trompovsky attack (Ruth, Opovcensky opening)712424.8%51.7%
C55Two knights defence15127.8%48.3%
C56Two knights defence7634.2%50.0%
C57Two knights defence6320.6%37.3%
C58Two knights defence21424.3%56.1%
C59Two knights defence17726.6%46.6%
C55Two knights defence (Modern bishop's opening)135829.9%56.3%
C58Two knights defence, Blackburne variation450.0%75.0%
C58Two knights defence, Bogolyubov variation6820.6%57.4%
C56Two knights defence, Canal variation2748.1%42.6%
C58Two knights defence, Colman variation90.0%77.8%
C57Two knights defence, Fegatello attack7636.8%46.1%
C57Two knights defence, Fegatello attack, Leonhardt variation30.0%0.0%
C57Two knights defence, Fegatello attack, Polerio defence10.0%0.0%
C57Two knights defence, Fritz variation616.7%58.3%
C57Two knights defence, Fritz, Gruber variation1735.3%52.9%
C59Two knights defence, Goering variation20.0%50.0%
C55Two knights defence, Keidanz variation1100.0%50.0%
C58Two knights defence, Kieseritsky variation3228.1%54.7%
C59Two knights defence, Knorre variation1100.0%50.0%
C57Two knights defence, Lolli attack2020.0%55.0%
C58Two knights defence, Paoli variation1118.2%81.8%
C55Two knights defence, Perreux variation3330.3%51.5%
C57Two knights defence, Pincus variation742.9%64.3%
C59Two knights defence, Steinitz variation17326.0%59.2%
C57Two knights defence, Ulvestad variation3420.6%57.4%
C57Two knights defence, Wilkes Barre (Traxler) variation7516.0%62.7%
C58Two knights defence, Yankovich variation540.0%40.0%
C55Two knights, Max Lange attack8422.6%47.0%
C55Two knights, Max Lange attack, Marshall variation450.0%50.0%
C55Two knights, Max Lange attack, Schlechter variation8234.1%48.8%
C55Two knights, Max Lange attack, Steinitz variation812.5%56.3%
A00Van't Kruijs opening128326.6%51.9%
C25Vienna gambit6726.9%52.2%
C29Vienna gambit23328.3%48.5%
C29Vienna gambit, Bardeleben variation1118.2%27.3%
C29Vienna gambit, Breyer variation12837.5%56.3%
C29Vienna gambit, Kaufmann variation1338.5%65.4%
C29Vienna gambit, Paulsen attack2326.1%52.2%
C29Vienna gambit, Steinitz variation3125.8%48.4%
C25Vienna game74625.6%52.1%
C26Vienna game34026.8%53.4%
C27Vienna game27126.6%48.7%
C28Vienna game35829.3%51.8%
C25Vienna game, Max Lange defence6923.2%44.9%
C27Vienna, Alekhine variation9924.2%42.4%
C26Vienna, Falkbeer variation14117.0%51.1%
C25Vienna, Hamppe-Allgaier gambit425.0%37.5%
C26Vienna, Mengarini variation3735.1%58.1%
C25Vienna, Paulsen variation59922.9%50.5%
C26Vienna, Paulsen-Mieses variation97230.6%50.6%
C25Vienna, Pierce gambit147.1%32.1%
C25Vienna, Steinitz gambit540.0%60.0%
C25Vienna, Steinitz gambit, Fraser-Minckwitz variation714.3%50.0%
C25Vienna, Steinitz gambit, Zukertort defence1100.0%50.0%
C27Vienna, `Frankenstein-Dracula' variation4226.2%56.0%
A56Vulture defence30.0%33.3%
A00Ware (Meadow Hay) opening20521.5%47.3%
A43Woozle defence4015.0%50.0%
B12de Bruycker defence2330.4%50.0%

Created in 2005-2013 by CCRL team
Last games added on January 13, 2018