CCRL 40/40
Downloads and Statistics
April 11, 2008
Testing summary:
Total: 114'872 games
played by 449 programs
16375 CPU days (X2 4600+)

White wins: 41'478 (36.1%)
Black wins: 31'357 (27.3%)
Draws: 42'037 (36.6%)
White score: 54.4%

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 opening714.3%64.3%
B02Alekhine's defence1010.0%35.0%
B03Alekhine's defence450.0%75.0%
B03Alekhine's defence, Balogh variation10.0%100.0%
B02Alekhine's defence, Brooklyn defence520.0%30.0%
B02Alekhine's defence, Maroczy variation1330.8%53.8%
B03Alekhine's defence, O'Sullivan gambit366.7%66.7%
B02Alekhine's defence, Saemisch attack560.0%50.0%
B02Alekhine's defence, Scandinavian variation70.0%42.9%
B02Alekhine's defence, Two pawns' (Lasker's) attack1145.5%59.1%
B03Alekhine's defence, exchange variation5131.4%56.9%
B03Alekhine's defence, exchange, Karpov variation1100.0%50.0%
B03Alekhine's defence, four pawns attack728.6%57.1%
B03Alekhine's defence, four pawns attack, 7.Be31250.0%75.0%
B03Alekhine's defence, four pawns attack, fianchetto variation40.0%50.0%
B04Alekhine's defence, modern variation1346.2%69.2%
B05Alekhine's defence, modern variation, 4...Bg45332.1%68.9%
B05Alekhine's defence, modern, Alekhine variation1100.0%50.0%
B05Alekhine's defence, modern, Flohr variation812.5%68.8%
B04Alekhine's defence, modern, Keres variation1060.0%60.0%
B04Alekhine's defence, modern, Larsen variation2839.3%62.5%
B04Alekhine's defence, modern, Schmid variation1136.4%54.5%
B04Alekhine's defence, modern, fianchetto variation2035.0%67.5%
A00Amar (Paris) opening1050.0%35.0%
A00Amar gambit10.0%0.0%
A00Amsterdam attack10.0%100.0%
A00Anderssen's opening540.0%20.0%
A00Anti-Borg (Desprez) opening10.0%0.0%
A40Beefeater defence333.3%83.3%
A57Benko gambit5123.5%62.7%
A59Benko gambit10.0%0.0%
A58Benko gambit accepted6741.8%53.7%
A57Benko gambit half accepted8030.0%46.3%
A59Benko gambit, 7.e41100.0%50.0%
A57Benko gambit, Zaitsev system812.5%6.3%
A58Benko gambit, fianchetto variation1947.4%50.0%
A59Benko gambit, main line1428.6%64.3%
A00Benko's opening31737.2%51.4%
A00Benko's opening, reversed Alekhine944.4%44.4%
A56Benoni defence6729.9%55.2%
A60Benoni defence1330.8%69.2%
A61Benoni defence6918.8%71.7%
A56Benoni defence, Hromodka system1915.8%76.3%
A65Benoni, 6.e420.0%0.0%
A61Benoni, Nimzovich (knight's tour) variation4723.4%60.6%
A67Benoni, Taimanov variation40.0%100.0%
A61Benoni, Uhlmann variation850.0%50.0%
A78Benoni, classical with ...Re8 and ...Na6944.4%55.6%
A75Benoni, classical with ...a6 and 10...Bg4922.2%55.6%
A70Benoni, classical with e4 and Nf38427.4%55.4%
A70Benoni, classical without 9.O-O10.0%0.0%
A72Benoni, classical without 9.O-O812.5%81.3%
A79Benoni, classical, 11.f31241.7%54.2%
A71Benoni, classical, 8.Bg51513.3%46.7%
A76Benoni, classical, 9...Re81020.0%30.0%
A77Benoni, classical, 9...Re8, 10.Nd21921.1%68.4%
A74Benoni, classical, 9...a6, 10.a410.0%100.0%
A73Benoni, classical, 9.O-O70.0%71.4%
A61Benoni, fianchetto variation20.0%100.0%
A62Benoni, fianchetto variation5330.2%62.3%
A64Benoni, fianchetto, 11...Re81618.8%34.4%
A63Benoni, fianchetto, 9...Nbd7520.0%70.0%
A69Benoni, four pawns attack, main line955.6%50.0%
A02Bird's opening540.0%60.0%
A03Bird's opening425.0%37.5%
A02Bird, From gambit, Lasker variation10.0%100.0%
C23Bishop's opening6634.8%56.8%
C24Bishop's opening, Berlin defence8038.8%56.9%
C23Bishop's opening, Calabrese counter-gambit, Jaenisch variation30.0%100.0%
C23Bishop's opening, Classical variation2035.0%52.5%
C23Bishop's opening, Lisitsyn variation10.0%0.0%
C23Bishop's opening, Philidor counter-attack2864.3%64.3%
C23Bishop's opening, Philidor variation475.0%37.5%
C24Bishop's opening, Urusov gambit922.2%33.3%
D00Blackmar gambit580.0%40.0%
A45Blackmar-Diemer gambit911.1%50.0%
E10Blumenfeld counter-gambit1020.0%60.0%
E10Blumenfeld counter-gambit accepted922.2%33.3%
E10Blumenfeld counter-gambit, Dus-Chotimursky variation1947.4%50.0%
E10Blumenfeld counter-gambit, Spielmann variation40.0%25.0%
C27Boden-Kieseritsky gambit10.0%100.0%
C27Boden-Kieseritsky gambit, Lichtenhein defence1100.0%50.0%
E11Bogo-Indian defence11738.5%59.4%
E11Bogo-Indian defence, Gruenfeld variation14531.7%52.4%
E11Bogo-Indian defence, Nimzovich variation21633.3%54.2%
A51Budapest defence declined20.0%50.0%
A52Budapest, Adler variation850.0%25.0%
A52Budapest, Alekhine, Abonyi variation20.0%50.0%
A51Budapest, Fajarowicz variation50.0%60.0%
A52Budapest, Rubinstein variation850.0%62.5%
A45Canard opening1030.0%25.0%
B10Caro-Kann defence35434.2%57.2%
B12Caro-Kann defence5831.0%55.2%
B15Caro-Kann defence4131.7%47.6%
B12Caro-Kann, 3.Nd24643.5%54.3%
B15Caro-Kann, Alekhine gambit333.3%83.3%
B16Caro-Kann, Bronstein-Larsen variation2222.7%65.9%
B12Caro-Kann, Edinburgh variation450.0%25.0%
B15Caro-Kann, Forgacs variation4334.9%47.7%
B10Caro-Kann, Goldman (Spielmann) variation425.0%37.5%
B15Caro-Kann, Gurgenidze counter-attack20.0%50.0%
B15Caro-Kann, Gurgenidze system5635.7%58.9%
B13Caro-Kann, Panov-Botvinnik attack7051.4%48.6%
B14Caro-Kann, Panov-Botvinnik attack, 5...e634242.4%56.0%
B14Caro-Kann, Panov-Botvinnik attack, 5...g64047.5%51.3%
B13Caro-Kann, Panov-Botvinnik, Czerniak variation333.3%16.7%
B13Caro-Kann, Panov-Botvinnik, Gunderam attack20.0%50.0%
B13Caro-Kann, Panov-Botvinnik, Herzog defence10.0%0.0%
B13Caro-Kann, Panov-Botvinnik, normal variation812.5%68.8%
B15Caro-Kann, Rasa-Studier gambit450.0%25.0%
B17Caro-Kann, Steinitz variation43135.7%54.3%
B15Caro-Kann, Tartakower (Nimzovich) variation2236.4%59.1%
B12Caro-Kann, Tartakower (fantasy) variation11040.9%55.9%
B10Caro-Kann, Two knights variation4940.8%55.1%
B11Caro-Kann, Two knights, 3...Bg44030.0%57.5%
B12Caro-Kann, advance variation73133.1%56.4%
B12Caro-Kann, advance, Short variation450.0%75.0%
B10Caro-Kann, anti-Caro-Kann defence12128.9%59.9%
B10Caro-Kann, anti-anti-Caro-Kann defence10145.5%49.5%
B18Caro-Kann, classical variation7346.6%50.7%
B18Caro-Kann, classical, 6.h46432.8%55.5%
B19Caro-Kann, classical, 7...Nd7955.6%50.0%
B18Caro-Kann, classical, Flohr variation20.0%50.0%
B18Caro-Kann, classical, Maroczy attack250.0%25.0%
B19Caro-Kann, classical, Spassky variation66439.6%53.4%
B10Caro-Kann, closed (Breyer) variation3735.1%50.0%
B13Caro-Kann, exchange variation9246.7%50.5%
B13Caro-Kann, exchange, Rubinstein variation1428.6%35.7%
E00Catalan opening35740.1%55.3%
E01Catalan, closed3033.3%56.7%
E06Catalan, closed, 5.Nf337746.7%52.0%
E07Catalan, closed, 6...Nbd71225.0%29.2%
E08Catalan, closed, 7.Qc230.0%33.3%
E07Catalan, closed, Botvinnik variation825.0%50.0%
E08Catalan, closed, Qc2 & b32040.0%50.0%
E09Catalan, closed, main line2313.0%71.7%
E04Catalan, open, 5.Nf356739.3%51.1%
E02Catalan, open, 5.Qa41040.0%70.0%
E05Catalan, open, classical line2123.8%50.0%
C21Centre game4546.7%70.0%
C22Centre game333.3%16.7%
C22Centre game, Berger variation5623.2%70.5%
C22Centre game, Paulsen attack30.0%66.7%
A00Clemenz (Mead's, Basman's or de Klerk's) opening2100.0%50.0%
D05Colle system944.4%66.7%
A56Czech Benoni defence1931.6%78.9%
A56Czech Benoni, King's Indian system425.0%37.5%
C21Danish gambit250.0%75.0%
E10Doery defence933.3%50.0%
A00Dunst (Sleipner, Heinrichsen) opening540.0%60.0%
A00Durkin's attack450.0%25.0%
A80Dutch5131.4%64.7%
A81Dutch defence12834.4%56.3%
A84Dutch defence5433.3%57.4%
A90Dutch defence4330.2%59.3%
A91Dutch defence333.3%83.3%
A92Dutch defence10.0%100.0%
A81Dutch defence, Blackburne variation10.0%0.0%
A90Dutch defence, Dutch-Indian (Nimzo-Dutch) variation425.0%37.5%
A84Dutch defence, Rubinstein variation2740.7%50.0%
A85Dutch with c4 & Nc31020.0%60.0%
A86Dutch with c4 & g3450.0%25.0%
A80Dutch, 2.Bg5 variation1729.4%55.9%
A82Dutch, Balogh defence10.0%100.0%
A97Dutch, Ilyin-Genevsky variation10.0%100.0%
A98Dutch, Ilyin-Genevsky variation with Qc21100.0%50.0%
A99Dutch, Ilyin-Genevsky variation with b3560.0%70.0%
A97Dutch, Ilyin-Genevsky, Winter variation757.1%57.1%
A86Dutch, Leningrad variation650.0%58.3%
A87Dutch, Leningrad, main variation1662.5%62.5%
A89Dutch, Leningrad, main variation with Nc62433.3%66.7%
A88Dutch, Leningrad, main variation with c63426.5%72.1%
A80Dutch, Manhattan (Alapin, Ulvestad) variation1100.0%50.0%
A84Dutch, Staunton gambit deferred875.0%37.5%
A83Dutch, Staunton gambit, Staunton's line1100.0%50.0%
A82Dutch, Staunton gambit, Tartakower variation1100.0%50.0%
A96Dutch, classical variation1030.0%65.0%
A92Dutch, stonewall variation1100.0%50.0%
A94Dutch, stonewall with Ba33100.0%50.0%
A92Dutch, stonewall with Nc3333.3%50.0%
A95Dutch, stonewall with Nc3812.5%43.8%
A93Dutch, stonewall, Botwinnik variation825.0%50.0%
A90Dutch-Indian, Alekhine variation40.0%50.0%
E10Dzindzikhashvili defence887.5%56.3%
A10English opening33342.9%53.9%
A13English opening36234.0%50.7%
A15English opening73938.7%53.0%
A16English opening13028.5%52.7%
A17English opening3243.8%56.3%
A20English opening88240.0%54.8%
A21English opening21730.0%59.2%
A22English opening11531.3%55.7%
A13English opening, Agincourt variation11646.6%54.3%
A15English, 1...Nf6 (Anglo-Indian defense)14529.0%57.2%
A10English, Adorjan defence1650.0%56.3%
A10English, Anglo-Dutch defense3336.4%51.5%
A16English, Anglo-Gruenfeld defense742.9%50.0%
A16English, Anglo-Gruenfeld, Czech defense650.0%41.7%
A16English, Anglo-Gruenfeld, Smyslov defense560.0%70.0%
A12English, Bled variation520.0%90.0%
A26English, Botvinnik system3125.8%38.7%
A28English, Bradley Beach variation933.3%38.9%
A24English, Bremen system with ...g6850.0%62.5%
A23English, Bremen system, Keres variation2920.7%62.1%
A22English, Bremen, Smyslov system21534.4%47.9%
A22English, Bremen, reverse dragon10338.8%49.5%
A12English, Capablanca's variation1154.5%36.4%
A22English, Carls' Bremen system3435.3%61.8%
A11English, Caro-Kann defensive system6844.1%54.4%
A12English, Caro-Kann defensive system862.5%56.3%
A12English, Caro-Kann defensive system, Bogolyubov variation728.6%71.4%
A10English, Jaenisch gambit20.0%100.0%
A21English, Keres variation250.0%25.0%
A21English, Kramnik-Shirov counterattack7631.6%51.3%
A13English, Kurajica defence425.0%37.5%
A12English, London defensive system1030.0%25.0%
A18English, Mikenas-Carls variation10.0%100.0%
A18English, Mikenas-Carls, Flohr variation520.0%70.0%
A19English, Mikenas-Carls, Sicilian variation1936.8%44.7%
A28English, Nenarokov variation1145.5%68.2%
A13English, Neo-Catalan2740.7%68.5%
A13English, Neo-Catalan accepted3641.7%54.2%
A14English, Neo-Catalan declined2853.6%55.4%
A12English, New York (London) defensive system366.7%33.3%
A17English, Nimzo-English opening7230.6%59.7%
A20English, Nimzovich variation616.7%91.7%
A20English, Nimzovich, Flohr variation1526.7%40.0%
A17English, Queens Indian formation1338.5%50.0%
A17English, Queens Indian, Romanishin variation366.7%33.3%
A13English, Romanishin gambit785.7%57.1%
A25English, Sicilian reversed8931.5%48.3%
A21English, Smyslov defence520.0%30.0%
A14English, Symmetrical, Keres defence10850.9%55.1%
A12English, Torre defensive system1353.8%50.0%
A21English, Troeger defence1625.0%62.5%
A13English, Wimpey system1154.5%63.6%
A25English, closed system15535.5%57.1%
A26English, closed system3525.7%52.9%
A25English, closed system (without ...d6)2138.1%57.1%
A25English, closed, 5.Rb13551.4%54.3%
A25English, closed, 5.Rb1 Taimanov variation10.0%0.0%
A25English, closed, Hort variation250.0%25.0%
A28English, four knights system6246.8%49.2%
A28English, four knights, 4.e321434.6%54.2%
A28English, four knights, Capablanca variation4042.5%53.8%
A28English, four knights, Marini variation5444.4%46.3%
A28English, four knights, Nimzovich variation3534.3%42.9%
A28English, four knights, Romanishin variation8150.6%57.4%
A28English, four knights, Stean variation2138.1%61.9%
A29English, four knights, kingside fianchetto125037.5%51.8%
A30English, symmetrical variation71335.8%55.2%
A32English, symmetrical variation2035.0%62.5%
A33English, symmetrical variation16144.1%55.6%
A34English, symmetrical variation22134.4%56.1%
A35English, symmetrical variation3528.6%48.6%
A36English, symmetrical variation2420.8%68.8%
A37English, symmetrical variation3625.0%54.2%
A38English, symmetrical variation7544.0%47.3%
A31English, symmetrical, Benoni formation12044.2%58.8%
A36English, symmetrical, Botvinnik system742.9%50.0%
A36English, symmetrical, Botvinnik system reversed70.0%42.9%
A37English, symmetrical, Botvinnik system reversed6526.2%54.6%
A33English, symmetrical, Geller variation10530.5%56.2%
A34English, symmetrical, Rubinstein system1540.0%46.7%
A35English, symmetrical, four knights system27440.5%52.7%
A30English, symmetrical, hedgehog system45538.7%57.1%
A30English, symmetrical, hedgehog, flexible formation7443.2%56.8%
A38English, symmetrical, main line with b31100.0%50.0%
A38English, symmetrical, main line with d350.0%0.0%
A39English, symmetrical, main line with d48444.0%58.9%
A34English, symmetrical, three knights system8342.2%60.8%
A27English, three knights system3727.0%51.4%
A36English, ultra-symmetrical variation7525.3%46.0%
C52Evans gambit1030.0%55.0%
C51Evans gambit declined10.0%100.0%
C51Evans gambit declined, 5.a4520.0%50.0%
C51Evans gambit declined, Showalter variation10.0%0.0%
C51Evans gambit, 5...Be710.0%0.0%
C51Evans gambit, Cordel variation475.0%37.5%
C51Evans gambit, Goering attack10.0%0.0%
C52Evans gambit, Lasker defence20.0%0.0%
C51Evans gambit, Morphy attack540.0%20.0%
C51Evans gambit, Paulsen variation911.1%72.2%
C52Evans gambit, Richardson attack333.3%16.7%
C51Evans gambit, Stone-Ware variation250.0%75.0%
C52Evans gambit, compromised defence425.0%62.5%
C52Evans gambit, compromised defence, Paulsen variation955.6%50.0%
C51Evans gambit, normal variation10.0%0.0%
C49Four knights650.0%75.0%
C46Four knights game7048.6%51.4%
C48Four knights, Bardeleben variation1100.0%50.0%
C47Four knights, Belgrade gambit450.0%50.0%
C46Four knights, Gunsberg variation757.1%42.9%
C46Four knights, Italian variation2330.4%50.0%
C49Four knights, Nimzovich (Paulsen) variation4100.0%50.0%
C48Four knights, Ranken variation1100.0%50.0%
C48Four knights, Rubinstein counter-gambit15039.3%57.0%
C48Four knights, Rubinstein counter-gambit, Bogolyubov variation20.0%50.0%
C48Four knights, Rubinstein counter-gambit, Henneberger variation450.0%50.0%
C48Four knights, Rubinstein counter-gambit, exchange variation1181.8%59.1%
C47Four knights, Scotch variation450.0%50.0%
C47Four knights, Scotch, 4...exd44748.9%50.0%
C47Four knights, Scotch, Krause variation520.0%70.0%
C48Four knights, Spanish variation1266.7%50.0%
C48Four knights, Spanish, classical defence911.1%50.0%
C48Four knights, Spielmann variation10.0%0.0%
C49Four knights, double Ruy Lopez520.0%90.0%
C49Four knights, symmetrical variation3933.3%52.6%
C49Four knights, symmetrical, Capablanca variation333.3%50.0%
C49Four knights, symmetrical, Maroczy system1435.7%53.6%
C49Four knights, symmetrical, Metger unpin7138.0%54.2%
C49Four knights, symmetrical, Pillsbury variation30.0%33.3%
C00French defence13638.2%53.7%
C11French defence5127.5%47.1%
C00French defence, Steiner variation12544.8%50.4%
C00French, Alapin variation2100.0%50.0%
C13French, Albin-Alekhine-Chatard attack540.0%40.0%
C13French, Albin-Alekhine-Chatard attack, Spielmann variation20.0%100.0%
C11French, Burn variation75336.7%56.2%
C00French, Chigorin variation10338.8%53.4%
C10French, Fort Knox variation5335.8%50.0%
C10French, Frere (Becker) variation616.7%75.0%
C11French, Henneberger variation837.5%56.3%
C00French, King's Indian attack15032.7%51.7%
C00French, Labourdonnais variation11432.5%42.5%
C12French, MacCutcheon variation2740.7%50.0%
C12French, MacCutcheon, Chigorin variation10.0%0.0%
C12French, MacCutcheon, Dr. Olland (Dutch) variation40.0%100.0%
C12French, MacCutcheon, Grigoriev variation1100.0%50.0%
C12French, MacCutcheon, Janowski variation1338.5%65.4%
C12French, MacCutcheon, Lasker variation5425.9%48.1%
C12French, MacCutcheon, Lasker variation, 8...g69429.8%53.2%
C12French, MacCutcheon, advance variation1030.0%25.0%
C10French, Paulsen variation15529.0%56.5%
C00French, Pelikan variation3135.5%53.2%
C00French, Reti (Spielmann) variation850.0%50.0%
C10French, Rubinstein variation17944.7%57.0%
C00French, Schlechter variation7842.3%46.8%
C00French, Steinitz attack30.0%33.3%
C11French, Steinitz variation11933.6%56.3%
C11French, Steinitz, Boleslavsky variation30934.0%56.5%
C11French, Steinitz, Gledhill attack1100.0%50.0%
C11French, Swiss variation2835.7%53.6%
C03French, Tarrasch20041.0%58.5%
C05French, Tarrasch, Botvinnik variation333.3%50.0%
C07French, Tarrasch, Eliskases variation742.9%50.0%
C04French, Tarrasch, Guimard main line2326.1%52.2%
C03French, Tarrasch, Guimard variation1822.2%66.7%
C06French, Tarrasch, Leningrad variation425.0%87.5%
C05French, Tarrasch, closed variation12234.4%57.4%
C06French, Tarrasch, closed variation, main line31038.4%61.1%
C07French, Tarrasch, open variation46646.8%51.9%
C09French, Tarrasch, open variation, main line22952.0%57.9%
C08French, Tarrasch, open, 4.ed ed20750.2%54.6%
C00French, Two knights variation2638.5%50.0%
C15French, Winawer (Nimzovich) variation4938.8%54.1%
C15French, Winawer, Alekhine (Maroczy) gambit2437.5%56.3%
C15French, Winawer, Alekhine gambit, Kan variation1764.7%50.0%
C16French, Winawer, Petrosian variation2030.0%70.0%
C16French, Winawer, advance variation10729.9%64.5%
C17French, Winawer, advance variation1741.2%67.6%
C18French, Winawer, advance variation2725.9%64.8%
C17French, Winawer, advance, 5.a35523.6%66.4%
C19French, Winawer, advance, 6...Ne72948.3%51.7%
C17French, Winawer, advance, Bogolyubov variation11428.1%53.5%
C17French, Winawer, advance, Russian variation1040.0%40.0%
C19French, Winawer, advance, Smyslov variation3023.3%78.3%
C19French, Winawer, advance, poisoned pawn variation66131.3%58.8%
C19French, Winawer, advance, poisoned pawn, Euwe-Gligoric variation10.0%0.0%
C19French, Winawer, advance, poisoned pawn, Konstantinopolsky variation10617.9%64.6%
C19French, Winawer, advance, positional main line28528.4%54.9%
C18French, Winawer, classical variation4124.4%51.2%
C00French, Wing gambit425.0%62.5%
C02French, advance variation18126.5%54.7%
C02French, advance, Euwe variation14535.2%59.7%
C02French, advance, Milner-Barry gambit875.0%62.5%
C02French, advance, Nimzovich system850.0%37.5%
C02French, advance, Paulsen attack11729.9%52.6%
C02French, advance, Steinitz variation6227.4%36.3%
C02French, advance, Wade variation3020.0%63.3%
C13French, classical560.0%30.0%
C14French, classical variation1100.0%50.0%
C14French, classical, Alapin variation20.0%100.0%
C13French, classical, Anderssen variation40.0%50.0%
C13French, classical, Anderssen-Richter variation30.0%66.7%
C13French, classical, Frankfurt variation425.0%87.5%
C14French, classical, Rubinstein variation250.0%75.0%
C14French, classical, Steinitz variation6930.4%55.8%
C14French, classical, Tarrasch variation20.0%50.0%
C13French, classical, Tartakower variation10.0%100.0%
C13French, classical, Vistaneckis (Nimzovich) variation60.0%66.7%
C01French, exchange variation23239.7%54.3%
C01French, exchange, Svenonius variation633.3%33.3%
C50Giuoco Pianissimo14939.6%50.0%
C50Giuoco Pianissimo, Canal variation4643.5%45.7%
C50Giuoco Pianissimo, Italian four knights variation7635.5%52.0%
C50Giuoco Piano2646.2%53.8%
C53Giuoco Piano39335.1%54.7%
C54Giuoco Piano2846.4%48.2%
C53Giuoco Piano, Anderssen variation333.3%50.0%
C53Giuoco Piano, Bird's attack2040.0%55.0%
C53Giuoco Piano, LaBourdonnais variation10.0%0.0%
C53Giuoco Piano, Mestel variation1100.0%50.0%
C54Giuoco Piano, Moeller (Therkatz) attack742.9%21.4%
C54Giuoco Piano, Moeller, bayonet attack10.0%100.0%
C53Giuoco Piano, centre-holding variation2100.0%50.0%
C53Giuoco Piano, close variation20.0%100.0%
C50Giuoco Piano, four knights variation1118.2%45.5%
A00Grob's attack333.3%50.0%
D80Gruenfeld defence1931.6%68.4%
D99Gruenfeld defence, Smyslov, main line3650.0%52.8%
D93Gruenfeld with Bf4 e34348.8%57.0%
D94Gruenfeld with e3 Bd31100.0%50.0%
D95Gruenfeld with e3 & Qb310.0%100.0%
D82Gruenfeld, 4.Bf43246.9%51.6%
D92Gruenfeld, 5.Bf48451.2%56.5%
D91Gruenfeld, 5.Bg519232.3%47.9%
D94Gruenfeld, 5.e35846.6%57.8%
D95Gruenfeld, Botvinnik variation633.3%50.0%
D94Gruenfeld, Flohr defence10.0%100.0%
D90Gruenfeld, Flohr variation911.1%61.1%
D83Gruenfeld, Gruenfeld gambit520.0%70.0%
D84Gruenfeld, Gruenfeld gambit accepted250.0%25.0%
D83Gruenfeld, Gruenfeld gambit, Botvinnik variation1100.0%50.0%
D83Gruenfeld, Gruenfeld gambit, Capablanca variation425.0%62.5%
D94Gruenfeld, Makogonov variation875.0%37.5%
D94Gruenfeld, Opovcensky variation933.3%61.1%
D81Gruenfeld, Russian variation666.7%66.7%
D96Gruenfeld, Russian variation1546.7%70.0%
D97Gruenfeld, Russian variation with e410.0%100.0%
D97Gruenfeld, Russian, Alekhine (Hungarian) variation33640.2%47.5%
D97Gruenfeld, Russian, Byrne (Simagin) variation1723.5%64.7%
D98Gruenfeld, Russian, Keres variation10.0%100.0%
D97Gruenfeld, Russian, Prins variation11744.4%57.3%
D98Gruenfeld, Russian, Smyslov variation3935.9%69.2%
D97Gruenfeld, Russian, Szabo (Boleslavsky) variation616.7%58.3%
D90Gruenfeld, Schlechter variation10.0%100.0%
D94Gruenfeld, Smyslov defence2259.1%56.8%
D88Gruenfeld, Spassky variation, main line, 10...cd, 11.cd1656.3%59.4%
D89Gruenfeld, Spassky variation, main line, 13.Bd31275.0%54.2%
D80Gruenfeld, Stockholm variation4235.7%56.0%
D90Gruenfeld, Three knights variation3429.4%47.1%
D85Gruenfeld, exchange variation11840.7%55.1%
D87Gruenfeld, exchange, Seville variation2142.9%64.3%
D86Gruenfeld, exchange, Simagin's improved variation837.5%43.8%
D89Gruenfeld, exchange, Sokolsky variation30.0%0.0%
D87Gruenfeld, exchange, Spassky variation5837.9%62.1%
D86Gruenfeld, exchange, classical variation7542.7%56.0%
D85Gruenfeld, modern exchange variation69849.4%53.9%
C40Gunderam defence2832.1%69.6%
A43Hawk (Habichd) defence10.0%0.0%
C50Hungarian defence560.0%50.0%
C44Inverted Hanham520.0%70.0%
C36KGA, Abbazia defence, modern variation650.0%41.7%
C34KGA, Becker defence10.0%100.0%
C37KGA, Blachly gambit10.0%0.0%
C34KGA, Bonsch-Osmolovsky variation20.0%50.0%
C35KGA, Cunningham defence40.0%50.0%
C35KGA, Cunningham, Euwe defence10.0%0.0%
C34KGA, Fischer defence520.0%70.0%
C38KGA, Hanstein gambit10.0%0.0%
C33KGA, Keres (Mason-Steinitz) gambit10.0%0.0%
C39KGA, Kieseritsky, Berlin defence, 6.Bc410.0%0.0%
C39KGA, Kieseritsky, Kolisch defence475.0%62.5%
C39KGA, Kieseritsky, Paulsen defence10.0%100.0%
C39KGA, Kieseritsky, Rice gambit616.7%41.7%
C39KGA, Kieseritsky, long whip (Stockwhip, classical) defence10.0%0.0%
C37KGA, Muzio gambit, Brentano defence1100.0%50.0%
C34KGA, Schallop defence425.0%62.5%
C33KGA, bishop's gambit1100.0%50.0%
C33KGA, bishop's gambit, Bogolyubov variation10.0%0.0%
C33KGA, bishop's gambit, Gifford variation250.0%75.0%
C33KGA, bishop's gambit, Jaenisch variation616.7%8.3%
C33KGA, bishop's gambit, McDonnell attack10.0%100.0%
C33KGA, bishop's gambit, Steinitz defence10.0%100.0%
C30KGD, 2...Nf6250.0%25.0%
C30KGD, Keene's defence333.3%83.3%
C31KGD, Nimzovich counter-gambit2100.0%50.0%
C30KGD, classical variation944.4%66.7%
C30KGD, classical, 4.c3333.3%50.0%
C30KGD, classical, Reti variation1100.0%50.0%
C20KP, Lopez opening250.0%25.0%
B00KP, Nimzovich defence2240.9%61.4%
B00KP, Nimzovich defence, Bogolyubov variation520.0%70.0%
A50Kevitz-Trajkovich defence4143.9%48.8%
E60King's Indian defence9837.8%53.6%
E61King's Indian defence, 3.Nc311727.4%59.8%
E72King's Indian with e4 & g3742.9%64.3%
E60King's Indian, 3.Nf340035.8%57.1%
E60King's Indian, 3.g310937.6%57.3%
E60King's Indian, 3.g3, counterthrust variation10.0%0.0%
E70King's Indian, 4.e46622.7%73.5%
E73King's Indian, 5.Be2580.0%60.0%
E90King's Indian, 5.Nf39128.6%63.7%
E91King's Indian, 6.Be28033.8%64.4%
E92King's Indian, Andersson variation2360.9%52.2%
E60King's Indian, Anti-Gruenfeld520.0%50.0%
E73King's Indian, Averbakh system4628.3%55.4%
E74King's Indian, Averbakh, 6...c5825.0%62.5%
E75King's Indian, Averbakh, main line333.3%83.3%
A48King's Indian, East Indian defence16336.8%50.3%
E76King's Indian, Four pawns attack2138.1%66.7%
E77King's Indian, Four pawns attack2718.5%68.5%
E77King's Indian, Four pawns attack, Florentine gambit1100.0%50.0%
E76King's Indian, Four pawns attack, dynamic line1136.4%45.5%
E79King's Indian, Four pawns attack, main line333.3%50.0%
E92King's Indian, Gligoric-Taimanov system15824.7%58.5%
E91King's Indian, Kazakh variation4042.5%48.8%
E70King's Indian, Kramer system1428.6%78.6%
E90King's Indian, Larsen variation1338.5%57.7%
A48King's Indian, London system7241.7%50.0%
E71King's Indian, Makagonov system (5.h3)4725.5%63.8%
E92King's Indian, Petrosian system1010.0%45.0%
E92King's Indian, Petrosian system, Stein variation10933.9%54.6%
E93King's Indian, Petrosian system, main line728.6%71.4%
E72King's Indian, Pomar system1100.0%50.0%
E80King's Indian, Saemisch variation2330.4%58.7%
E81King's Indian, Saemisch, 5...O-O18234.6%55.8%
E83King's Indian, Saemisch, 6...Nc6475.0%62.5%
E81King's Indian, Saemisch, Byrne variation475.0%62.5%
E83King's Indian, Saemisch, Panno formation650.0%58.3%
E84King's Indian, Saemisch, Panno main line6435.9%52.3%
E82King's Indian, Saemisch, double fianchetto variation1030.0%55.0%
E89King's Indian, Saemisch, orthodox main line10.0%0.0%
E86King's Indian, Saemisch, orthodox, 7.Nge2 c64531.1%40.0%
E87King's Indian, Saemisch, orthodox, 7.d53930.8%61.5%
E88King's Indian, Saemisch, orthodox, 7.d5 c66132.8%59.0%
E87King's Indian, Saemisch, orthodox, Bronstein variation1100.0%50.0%
E73King's Indian, Semi-Averbakh system30.0%66.7%
E77King's Indian, Six pawns attack20.0%0.0%
E61King's Indian, Smyslov system1637.5%43.8%
A48King's Indian, Torre attack12631.7%55.6%
E90King's Indian, Zinnowitz variation1338.5%50.0%
E70King's Indian, accelerated Averbakh system520.0%70.0%
E92King's Indian, classical variation633.3%66.7%
E62King's Indian, fianchetto variation1435.7%53.6%
E62King's Indian, fianchetto with ...Nc61040.0%50.0%
E67King's Indian, fianchetto with ...Nd71650.0%62.5%
A49King's Indian, fianchetto without c414635.6%58.9%
E62King's Indian, fianchetto, Kavalek (Bronstein) variation10832.4%60.6%
E62King's Indian, fianchetto, Larsen system4445.5%61.4%
E63King's Indian, fianchetto, Panno variation48035.2%55.9%
E62King's Indian, fianchetto, Simagin variation714.3%64.3%
E62King's Indian, fianchetto, Uhlmann (Szabo) variation3528.6%57.1%
E66King's Indian, fianchetto, Yugoslav Panno4035.0%55.0%
E64King's Indian, fianchetto, Yugoslav system1030.0%75.0%
E65King's Indian, fianchetto, Yugoslav, 7.O-O1250.0%50.0%
E69King's Indian, fianchetto, classical main line16934.9%60.1%
E67King's Indian, fianchetto, classical variation7830.8%56.4%
E68King's Indian, fianchetto, classical variation, 8.e422334.1%60.1%
E62King's Indian, fianchetto, lesser Simagin (Spassky) variation2347.8%54.3%
E94King's Indian, orthodox variation14333.6%58.0%
E94King's Indian, orthodox, 7...Nbd718435.9%60.9%
E95King's Indian, orthodox, 7...Nbd7, 8.Re14634.8%63.0%
E96King's Indian, orthodox, 7...Nbd7, main line1631.3%40.6%
E97King's Indian, orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation)83231.4%55.6%
E98King's Indian, orthodox, Aronin-Taimanov, 9.Ne138022.4%60.7%
E99King's Indian, orthodox, Aronin-Taimanov, Benko attack10.0%100.0%
E97King's Indian, orthodox, Aronin-Taimanov, bayonet attack36034.4%57.2%
E99King's Indian, orthodox, Aronin-Taimanov, main line520.0%70.0%
E94King's Indian, orthodox, Donner variation1414.3%71.4%
C30King's gambit20.0%100.0%
C34King's knight's gambit1100.0%50.0%
C38King's knight's gambit30.0%0.0%
C44King's pawn game333.3%50.0%
C50King's pawn game7634.2%56.6%
B00King's pawn opening11326.5%58.4%
C40Latvian, Fraser defence1100.0%50.0%
B00Lemming defence250.0%25.0%
D00Levitsky attack (Queen's bishop attack)17636.4%44.9%
A00Mieses opening1100.0%50.0%
A40Modern defence4626.1%69.6%
A42Modern defence, Averbakh system1442.9%64.3%
A42Modern defence, Averbakh system, Kotov variation10.0%100.0%
D70Neo-Gruenfeld (Kemeri) defence714.3%50.0%
D70Neo-Gruenfeld defence1942.1%47.4%
D73Neo-Gruenfeld, 5.Nf37057.1%54.3%
D71Neo-Gruenfeld, 5.cd1457.1%50.0%
D72Neo-Gruenfeld, 5.cd, main line1338.5%34.6%
D77Neo-Gruenfeld, 6.O-O7941.8%52.5%
D78Neo-Gruenfeld, 6.O-O c67739.0%53.2%
D79Neo-Gruenfeld, 6.O-O, main line3745.9%50.0%
D74Neo-Gruenfeld, 6.cd Nxd5, 7.O-O1346.2%61.5%
D76Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb64447.7%55.7%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc31127.3%59.1%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.dc10.0%100.0%
E00Neo-Indian (Seirawan) attack8631.4%48.3%
E20Nimzo-Indian defence825.0%37.5%
E40Nimzo-Indian, 4.e34126.8%50.0%
E46Nimzo-Indian, 4.e3 O-O922.2%44.4%
E47Nimzo-Indian, 4.e3 O-O, 5.Bd34450.0%54.5%
E48Nimzo-Indian, 4.e3 O-O, 5.Bd3 d55637.5%49.1%
E41Nimzo-Indian, 4.e3 c57939.2%55.1%
E42Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein)16442.7%53.0%
E51Nimzo-Indian, 4.e3 e8g8, 5.Nf3 d7d51172.7%45.5%
E50Nimzo-Indian, 4.e3 e8g8, 5.Nf3, without ...d51741.2%44.1%
E49Nimzo-Indian, 4.e3, Botvinnik system2850.0%67.9%
E45Nimzo-Indian, 4.e3, Bronstein (Byrne) variation3053.3%60.0%
E53Nimzo-Indian, 4.e3, Gligoric system with 7...Nbd7333.3%16.7%
E54Nimzo-Indian, 4.e3, Gligoric system with 7...dc15742.7%55.1%
E55Nimzo-Indian, 4.e3, Gligoric system, Bronstein variation82946.1%53.7%
E54Nimzo-Indian, 4.e3, Gligoric system, Smyslov variation366.7%66.7%
E53Nimzo-Indian, 4.e3, Keres variation1643.8%65.6%
E51Nimzo-Indian, 4.e3, Ragozin variation366.7%66.7%
E40Nimzo-Indian, 4.e3, Taimanov variation30.0%33.3%
E59Nimzo-Indian, 4.e3, main line42843.0%51.2%
E52Nimzo-Indian, 4.e3, main line with ...b64736.2%62.8%
E53Nimzo-Indian, 4.e3, main line with ...c55143.1%66.7%
E56Nimzo-Indian, 4.e3, main line with 7...Nc61650.0%56.3%
E58Nimzo-Indian, 4.e3, main line with 8...Bxc324732.4%53.4%
E57Nimzo-Indian, 4.e3, main line with 8...dc and 9...cd560.0%30.0%
E43Nimzo-Indian, Fischer variation7037.1%58.6%
E44Nimzo-Indian, Fischer variation, 5.Ne25735.1%57.9%
E20Nimzo-Indian, Kmoch variation5632.1%58.9%
E30Nimzo-Indian, Leningrad variation5332.1%53.8%
E30Nimzo-Indian, Leningrad, ...b5 gambit333.3%50.0%
E31Nimzo-Indian, Leningrad, main line1010.0%45.0%
E46Nimzo-Indian, Reshevsky variation6547.7%46.9%
E20Nimzo-Indian, Romanishin-Kasparov (Steiner) system8236.6%53.7%
E24Nimzo-Indian, Saemisch variation1650.0%31.3%
E25Nimzo-Indian, Saemisch variation5100.0%50.0%
E27Nimzo-Indian, Saemisch variation250.0%25.0%
E28Nimzo-Indian, Saemisch variation30.0%100.0%
E24Nimzo-Indian, Saemisch, Botvinnik variation10.0%0.0%
E29Nimzo-Indian, Saemisch, Capablanca variation837.5%31.3%
E25Nimzo-Indian, Saemisch, Keres variation4151.2%47.6%
E26Nimzo-Indian, Saemisch, O'Kelly variation50.0%20.0%
E25Nimzo-Indian, Saemisch, Romanovsky variation1100.0%50.0%
E29Nimzo-Indian, Saemisch, main line825.0%50.0%
E46Nimzo-Indian, Simagin variation119.1%68.2%
E22Nimzo-Indian, Spielmann variation1241.7%54.2%
E23Nimzo-Indian, Spielmann, 4...c5, 5.dc Nc620.0%50.0%
E23Nimzo-Indian, Spielmann, Karlsbad variation1100.0%50.0%
E32Nimzo-Indian, classical variation119441.5%54.1%
E33Nimzo-Indian, classical, 4...Nc6757.1%42.9%
E38Nimzo-Indian, classical, 4...c55230.8%69.2%
E32Nimzo-Indian, classical, Adorjan gambit2025.0%52.5%
E36Nimzo-Indian, classical, Botvinnik variation20.0%50.0%
E33Nimzo-Indian, classical, Milner-Barry (Zurich) variation5032.0%56.0%
E34Nimzo-Indian, classical, Noa variation11749.6%53.0%
E36Nimzo-Indian, classical, Noa variation, 5.a31717.6%44.1%
E35Nimzo-Indian, classical, Noa variation, 5.cd ed6241.9%59.7%
E37Nimzo-Indian, classical, Noa variation, main line, 7.Qc21533.3%76.7%
E39Nimzo-Indian, classical, Pirc variation11137.8%57.7%
E41Nimzo-Indian, e3, Huebner variation7628.9%42.1%
E21Nimzo-Indian, three knights variation24035.8%50.4%
A01Nimzovich-Larsen attack2317.4%43.5%
A01Nimzovich-Larsen attack, Dutch variation80.0%75.0%
A01Nimzovich-Larsen attack, English variation1127.3%59.1%
A01Nimzovich-Larsen attack, Indian variation2213.6%43.2%
A01Nimzovich-Larsen attack, classical variation3737.8%54.1%
A01Nimzovich-Larsen attack, modern variation9134.1%53.3%
A01Nimzovich-Larsen attack, symmetrical variation30.0%33.3%
A00Novosibirsk opening1100.0%50.0%
A43Old Benoni defence7828.2%59.0%
A44Old Benoni defence4100.0%50.0%
A43Old Benoni, Franco-Benoni defence250.0%25.0%
A43Old Benoni, Mujannah formation425.0%87.5%
A43Old Benoni, Schmid's system20.0%0.0%
A41Old Indian defence3534.3%62.9%
A53Old Indian defence14032.1%59.6%
A53Old Indian, Janowski variation922.2%66.7%
A41Old Indian, Tartakower (Wade) variation4835.4%59.4%
A54Old Indian, Ukrainian variation1060.0%70.0%
A54Old Indian, Ukrainian variation, 4.Nf31145.5%59.1%
A55Old Indian, main line6446.9%60.9%
B00Owen defence3333.3%65.2%
C42Petrov three knights game4323.3%65.1%
C42Petrov's defence6334.9%50.8%
C42Petrov, Cochrane gambit540.0%40.0%
C42Petrov, Cozio (Lasker) attack1747.1%52.9%
C42Petrov, Damiano variation10.0%100.0%
C42Petrov, French attack1100.0%50.0%
C42Petrov, Italian variation2524.0%52.0%
C42Petrov, Kaufmann attack1513.3%40.0%
C42Petrov, Nimzovich attack3943.6%55.1%
C42Petrov, Paulsen attack219.5%47.6%
C43Petrov, Urusov gambit250.0%75.0%
C42Petrov, classical attack4740.4%60.6%
C42Petrov, classical attack, Berger variation10.0%100.0%
C42Petrov, classical attack, Chigorin variation10031.0%54.5%
C42Petrov, classical attack, Jaenisch variation43040.2%60.3%
C42Petrov, classical attack, Krause variation10.0%100.0%
C42Petrov, classical attack, Marshall variation24936.5%55.6%
C42Petrov, classical attack, Mason variation933.3%72.2%
C42Petrov, classical attack, close variation837.5%31.3%
C43Petrov, modern (Steinitz) attack1040.0%60.0%
C43Petrov, modern attack, Steinitz variation1100.0%50.0%
C43Petrov, modern attack, Symmetrical variation20935.4%50.2%
C43Petrov, modern attack, Trifunovic variation1450.0%46.4%
C43Petrov, modern attack, main line2245.5%63.6%
C41Philidor's defence3540.0%57.1%
C41Philidor, Hanham variation366.7%66.7%
C41Philidor, Hanham, Delmar variation2100.0%50.0%
C41Philidor, Hanham, Krause variation333.3%16.7%
C41Philidor, Hanham, Schlechter variation1010.0%55.0%
C41Philidor, Hanham, Steiner variation250.0%25.0%
C41Philidor, Improved Hanham variation6137.7%61.5%
C41Philidor, Larsen variation633.3%50.0%
C41Philidor, Nimzovich, Sokolsky variation250.0%75.0%
C41Philidor, Philidor counter-gambit1100.0%50.0%
C41Philidor, Philidor counter-gambit, Zukertort variation30.0%100.0%
C41Philidor, Philidor counter-gambit, del Rio attack10.0%100.0%
C41Philidor, Steinitz variation333.3%16.7%
C41Philidor, exchange variation2623.1%46.2%
B07Pirc defence7328.8%52.7%
B07Pirc, 150 attack5341.5%58.5%
B09Pirc, Austrian attack1435.7%53.6%
B09Pirc, Austrian attack, 6.Bd34740.4%45.7%
B09Pirc, Austrian attack, 6.Be3922.2%66.7%
B09Pirc, Austrian attack, 6.e5560.0%50.0%
B09Pirc, Austrian attack, Ljubojevic variation10.0%0.0%
B09Pirc, Austrian attack, dragon formation2650.0%67.3%
B07Pirc, Byrne variation3148.4%59.7%
B07Pirc, Holmov system2100.0%50.0%
B07Pirc, Sveshnikov system2634.6%44.2%
B07Pirc, Ufimtsev-Pytel variation4431.8%54.5%
B07Pirc, bayonet (Mariotti) attack2100.0%50.0%
B08Pirc, classical (two knights) system4332.6%62.8%
B08Pirc, classical system, 5.Be213933.1%54.7%
B08Pirc, classical, h3 system3748.6%48.6%
A00Polish (Sokolsky) opening2133.3%31.0%
A40Polish defence580.0%60.0%
A00Polish, Outflank variation425.0%62.5%
C44Ponziani counter-gambit650.0%41.7%
C44Ponziani opening933.3%72.2%
C44Ponziani, Jaenisch counter-attack2540.0%64.0%
A42Pterodactyl defence1850.0%63.9%
D21QGA, 3.Nf34632.6%57.6%
D20QGA, 3.e417934.1%57.3%
D26QGA, 4...e66045.0%52.5%
D24QGA, 4.Nc31637.5%62.5%
D25QGA, 4.e3742.9%64.3%
D22QGA, Alekhine defence1353.8%57.7%
D22QGA, Alekhine defence, Alatortsev variation1100.0%50.0%
D21QGA, Alekhine defense, Borisenko-Furman variation250.0%25.0%
D24QGA, Bogolyubov variation475.0%37.5%
D21QGA, Ericson variation10.0%0.0%
D25QGA, Flohr variation1428.6%64.3%
D22QGA, Haberditz variation366.7%33.3%
D25QGA, Janowsky-Larsen variation3842.1%57.9%
D20QGA, Linares variation944.4%55.6%
D23QGA, Mannheim variation837.5%56.3%
D25QGA, Smyslov variation666.7%66.7%
D26QGA, classical variation19152.4%52.9%
D26QGA, classical variation, 6.O-O850.0%50.0%
D27QGA, classical, 6...a639449.2%56.3%
D28QGA, classical, 7...b51729.4%67.6%
D28QGA, classical, 7.Qe21752.9%55.9%
D29QGA, classical, 8...Bb76737.3%41.0%
D26QGA, classical, Furman variation10.0%0.0%
D27QGA, classical, Geller variation1353.8%65.4%
D27QGA, classical, Rubinstein variation45341.9%56.1%
D29QGA, classical, Smyslov variation837.5%56.3%
D26QGA, classical, Steinitz variation475.0%62.5%
D30QGD5543.6%58.2%
D51QGD1100.0%50.0%
D52QGD650.0%58.3%
D30QGD Slav3056.7%58.3%
D15QGD Slav accepted1540.0%33.3%
D16QGD Slav accepted, Alapin variation714.3%78.6%
D10QGD Slav defence39035.9%54.6%
D10QGD Slav defence, Alekhine variation40.0%75.0%
D10QGD Slav defence, exchange variation16839.3%54.2%
D11QGD Slav, 3.Nf317437.9%54.0%
D15QGD Slav, 4.Nc321434.1%54.4%
D11QGD Slav, 4.e313834.1%52.5%
D12QGD Slav, 4.e3 Bf533239.2%54.2%
D15QGD Slav, 5.e3 (Alekhine variation)1827.8%58.3%
D12QGD Slav, Amsterdam variation333.3%83.3%
D11QGD Slav, Breyer variation2133.3%59.5%
D17QGD Slav, Carlsbad variation5731.6%52.6%
D17QGD Slav, Czech defence2437.5%43.8%
D18QGD Slav, Dutch variation1612.5%56.3%
D19QGD Slav, Dutch variation27033.7%58.7%
D19QGD Slav, Dutch variation, main line3933.3%60.3%
D17QGD Slav, Krause attack4930.6%64.3%
D15QGD Slav, Schlechter variation1844.4%55.6%
D16QGD Slav, Smyslov variation1020.0%60.0%
D16QGD Slav, Soultanbeieff variation450.0%75.0%
D16QGD Slav, Steiner variation1822.2%77.8%
D15QGD Slav, Suechting variation250.0%75.0%
D15QGD Slav, Tolush-Geller gambit520.0%10.0%
D17QGD Slav, Wiesbaden variation7131.0%59.2%
D10QGD Slav, Winawer counter-gambit2420.8%56.3%
D12QGD Slav, exchange variation1625.0%56.3%
D13QGD Slav, exchange variation7435.1%59.5%
D14QGD Slav, exchange variation, 6.Bf4 Bf53946.2%53.8%
D14QGD Slav, exchange, Trifunovic variation1233.3%41.7%
D43QGD semi-Slav98637.1%52.8%
D45QGD semi-Slav, 5...Nd79028.9%45.6%
D44QGD semi-Slav, 5.Bg5 dc1145.5%50.0%
D45QGD semi-Slav, 5.e34831.3%55.2%
D46QGD semi-Slav, 6.Bd3944.4%55.6%
D47QGD semi-Slav, 7.Bc41926.3%55.3%
D46QGD semi-Slav, Bogolyubov variation6342.9%53.2%
D44QGD semi-Slav, Botvinnik system (anti-Meran)1136.4%45.5%
D46QGD semi-Slav, Chigorin defence7435.1%56.8%
D44QGD semi-Slav, Ekstrom variation933.3%27.8%
D48QGD semi-Slav, Meran80.0%25.0%
D47QGD semi-Slav, Meran variation16242.6%57.7%
D48QGD semi-Slav, Meran, 8...a621037.6%47.9%
D49QGD semi-Slav, Meran, Blumenfeld variation8838.6%47.7%
D48QGD semi-Slav, Meran, Pirc variation20.0%50.0%
D49QGD semi-Slav, Meran, Rabinovich variation2832.1%51.8%
D49QGD semi-Slav, Meran, Rellstab attack1050.0%45.0%
D48QGD semi-Slav, Meran, Reynolds' variation27035.6%54.8%
D49QGD semi-Slav, Meran, Sozin variation7035.7%47.9%
D49QGD semi-Slav, Meran, Stahlberg variation3941.0%41.0%
D47QGD semi-Slav, Meran, Wade variation288934.5%54.7%
D48QGD semi-Slav, Meran, old main line7339.7%59.6%
D46QGD semi-Slav, Romih variation8636.0%63.4%
D45QGD semi-Slav, Rubinstein (anti-Meran) system1020.0%40.0%
D45QGD semi-Slav, Stoltz variation339039.5%52.2%
D45QGD semi-Slav, accelerated Meran (Alekhine variation)8230.5%45.7%
D44QGD semi-Slav, anti-Meran gambit19833.8%54.3%
D44QGD semi-Slav, anti-Meran, Lilienthal variation5831.0%60.3%
D44QGD semi-Slav, anti-Meran, Szabo variation812.5%43.8%
D47QGD semi-Slav, neo-Meran (Lundin variation)3438.2%66.2%
D35QGD, 3...Nf62536.0%54.0%
D31QGD, 3.Nc31838.9%63.9%
D50QGD, 4.Bg51442.9%50.0%
D53QGD, 4.Bg5 Be7837.5%43.8%
D51QGD, 4.Bg5 Nbd730.0%66.7%
D37QGD, 4.Nf339338.7%51.7%
D51QGD, 5...c6560.0%50.0%
D55QGD, 6.Nf3728.6%57.1%
D31QGD, Alapin variation250.0%75.0%
D08QGD, Albin counter-gambit333.3%50.0%
D09QGD, Albin counter-gambit, 5.g3425.0%37.5%
D50QGD, Been-Koomen variation10.0%0.0%
D52QGD, Cambridge Springs defence, 7.cd10.0%0.0%
D52QGD, Cambridge Springs defence, Argentine variation1100.0%50.0%
D52QGD, Cambridge Springs defence, Bogoljubow variation6847.1%52.9%
D52QGD, Cambridge Springs defence, Rubinstein variation1457.1%42.9%
D52QGD, Cambridge Springs defence, Yugoslav variation5044.0%58.0%
D30QGD, Capablanca-Duras variation2236.4%63.6%
D31QGD, Charousek (Petrosian) variation5433.3%57.4%
D07QGD, Chigorin defence30135.2%59.8%
D07QGD, Chigorin defence, Janowski variation633.3%66.7%
D06QGD, Grau (Sahovic) defence540.0%60.0%
D30QGD, Hastings variation1931.6%57.9%
D31QGD, Janowski variation366.7%33.3%
D56QGD, Lasker defence3625.0%51.4%
D56QGD, Lasker defence, Teichmann variation837.5%43.8%
D06QGD, Marshall defence4445.5%61.4%
D55QGD, Neo-orthodox variation, 7.Bh41752.9%61.8%
D55QGD, Neo-orthodox variation, 7.Bxf6633.3%83.3%
D60QGD, Orthodox defence944.4%66.7%
D63QGD, Orthodox defence333.3%50.0%
D62QGD, Orthodox defence, 7.Qc2 c5, 8.cd (Rubinstein)2152.4%69.0%
D63QGD, Orthodox defence, 7.Rc11729.4%61.8%
D66QGD, Orthodox defence, Bd3 line4141.5%62.2%
D67QGD, Orthodox defence, Bd3 line1650.0%50.0%
D67QGD, Orthodox defence, Bd3 line, 11.O-O1315.4%69.2%
D67QGD, Orthodox defence, Bd3 line, Alekhine variation2450.0%58.3%
D60QGD, Orthodox defence, Botvinnik variation933.3%61.1%
D63QGD, Orthodox defence, Pillsbury attack10.0%100.0%
D64QGD, Orthodox defence, Rubinstein attack (with Rc1)1957.9%55.3%
D64QGD, Orthodox defence, Rubinstein attack, Gruenfeld variation333.3%50.0%
D64QGD, Orthodox defence, Rubinstein attack, Karlsbad variation714.3%50.0%
D64QGD, Orthodox defence, Rubinstein attack, Wolf variation10.0%0.0%
D61QGD, Orthodox defence, Rubinstein variation2948.3%51.7%
D63QGD, Orthodox defence, Swiss (Henneberger) variation1844.4%61.1%
D63QGD, Orthodox defence, Swiss, Karlsbad variation3540.0%48.6%
D68QGD, Orthodox defence, classical variation3342.4%57.6%
D68QGD, Orthodox defence, classical, 13.d1b1 (Maroczy)250.0%25.0%
D68QGD, Orthodox defence, classical, 13.d1c2 (Vidmar)3253.1%57.8%
D69QGD, Orthodox defence, classical, 13.de1566.7%40.0%
D55QGD, Petrosian variation11647.4%54.7%
D38QGD, Ragozin variation32239.4%55.4%
D39QGD, Ragozin, Vienna variation53547.3%52.8%
D40QGD, Semi-Tarrasch defence10842.6%50.9%
D40QGD, Semi-Tarrasch defence, Pillsbury variation20.0%50.0%
D41QGD, Semi-Tarrasch with e31850.0%52.8%
D41QGD, Semi-Tarrasch, 5.cd7542.7%53.3%
D42QGD, Semi-Tarrasch, 7.Bd34148.8%58.5%
D41QGD, Semi-Tarrasch, Kmoch variation1100.0%50.0%
D50QGD, Semi-Tarrasch, Primitive Pillsbury variation20.0%100.0%
D41QGD, Semi-Tarrasch, San Sebastian variation616.7%91.7%
D32QGD, Tarrasch defence3450.0%57.4%
D32QGD, Tarrasch defence, 4.cd ed2100.0%50.0%
D32QGD, Tarrasch defence, Marshall gambit333.3%50.0%
D33QGD, Tarrasch, Folkestone (Swedish) variation540.0%60.0%
D33QGD, Tarrasch, Prague variation850.0%37.5%
D34QGD, Tarrasch, Prague variation, 7...Be73638.9%55.6%
D34QGD, Tarrasch, Prague variation, 9.Bg55644.6%59.8%
D34QGD, Tarrasch, Prague variation, Normal position5743.9%51.8%
D34QGD, Tarrasch, Reti variation2100.0%50.0%
D33QGD, Tarrasch, Schlechter-Rubinstein system425.0%37.5%
D33QGD, Tarrasch, Wagner variation250.0%75.0%
D32QGD, Tarrasch, von Hennig-Schara gambit20.0%100.0%
D58QGD, Tartakower (Makagonov-Bondarevsky) system202144.8%52.8%
D59QGD, Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd52642.3%48.1%
D59QGD, Tartakower variation2528.0%46.0%
D30QGD, Vienna variation540.0%60.0%
D37QGD, classical variation (5.Bf4)63441.6%58.2%
D35QGD, exchange variation1735.3%47.1%
D35QGD, exchange, Saemisch variation1942.1%36.8%
D35QGD, exchange, positional line7838.5%65.4%
D35QGD, exchange, positional line, 5...c63033.3%56.7%
D36QGD, exchange, positional line, 6.Qc21040.0%40.0%
D31QGD, semi-Slav4434.1%55.7%
D31QGD, semi-Slav, Abrahams variation1850.0%47.2%
D31QGD, semi-Slav, Marshall gambit7335.6%53.4%
D31QGD, semi-Slav, Noteboom variation1030.0%45.0%
D06QGD, symmetrical (Austrian) defence10.0%0.0%
C40QP counter-gambit (elephant gambit)250.0%75.0%
A50Queen's Indian accelerated2231.8%52.3%
A47Queen's Indian defence8936.0%59.6%
E12Queen's Indian defence8729.9%52.9%
E12Queen's Indian, 4.Nc373835.2%51.8%
E12Queen's Indian, 4.Nc3, Botvinnik variation333.3%50.0%
E13Queen's Indian, 4.Nc3, main line1637.5%62.5%
E14Queen's Indian, 4.e331735.6%55.0%
E15Queen's Indian, 4.g312832.0%57.4%
E15Queen's Indian, 4.g3 Bb72429.2%72.9%
E17Queen's Indian, 5.Bg2 Be7757.1%42.9%
E14Queen's Indian, Averbakh variation10.0%100.0%
E15Queen's Indian, Buerger variation2100.0%50.0%
E16Queen's Indian, Capablanca variation1533.3%43.3%
E17Queen's Indian, Euwe variation425.0%62.5%
A47Queen's Indian, Marienbad system1931.6%57.9%
A47Queen's Indian, Marienbad system, Berg variation333.3%50.0%
E12Queen's Indian, Miles variation3930.8%48.7%
E15Queen's Indian, Nimzovich variation (exaggerated fianchetto)456035.5%55.8%
E17Queen's Indian, Opovcensky variation7443.2%54.1%
E12Queen's Indian, Petrosian system109037.2%52.7%
E16Queen's Indian, Riumin variation1553.3%46.7%
E15Queen's Indian, Rubinstein variation1233.3%41.7%
E16Queen's Indian, Yates variation3125.8%61.3%
E17Queen's Indian, anti-Queen's Indian system1346.2%53.8%
E17Queen's Indian, old main line, 6.O-O4736.2%60.6%
E18Queen's Indian, old main line, 7.Nc314943.6%59.4%
E19Queen's Indian, old main line, 9.Qxc316336.2%59.2%
A41Queen's Pawn6431.3%51.6%
D02Queen's bishop game27031.5%50.6%
D20Queen's gambit accepted17237.8%59.0%
D23Queen's gambit accepted366.7%33.3%
D30Queen's gambit declined92039.8%54.3%
A40Queen's pawn60838.3%56.0%
A45Queen's pawn game40938.6%53.1%
A46Queen's pawn game36132.4%56.4%
A50Queen's pawn game10329.1%60.2%
D00Queen's pawn game2552.0%54.0%
D02Queen's pawn game111635.6%52.6%
D04Queen's pawn game10635.8%49.1%
D05Queen's pawn game7635.5%53.3%
E00Queen's pawn game12637.3%53.6%
E10Queen's pawn game66439.8%58.9%
D02Queen's pawn game, Chigorin variation4047.5%48.8%
D02Queen's pawn game, Krause variation2133.3%59.5%
D05Queen's pawn game, Rubinstein (Colle-Zukertort) variation2254.5%50.0%
D05Queen's pawn game, Zukertort variation425.0%62.5%
A40Queen's pawn, Charlick (Englund) gambit1100.0%50.0%
D00Queen's pawn, Chigorin variation1154.5%63.6%
A40Queen's pawn, English defence1625.0%68.8%
A40Queen's pawn, Franco-Indian (Keres) defence9240.2%54.9%
A40Queen's pawn, Keres defence15736.3%58.3%
A40Queen's pawn, Lundin (Kevitz-Mikenas) defence1612.5%62.5%
D00Queen's pawn, Mason variation19938.7%53.0%
D00Queen's pawn, Mason variation, Steinitz counter-gambit862.5%68.8%
E60Queen's pawn, Mengarini attack119.1%86.4%
A46Queen's pawn, Torre attack5641.1%49.1%
A46Queen's pawn, Torre attack, Wagner gambit10.0%100.0%
A46Queen's pawn, Yusupov-Rubinstein system4438.6%62.5%
D00Queen's pawn, stonewall attack40.0%75.0%
A09Reti accepted3348.5%48.5%
A09Reti accepted, Keres variation922.2%77.8%
A04Reti opening107336.9%53.7%
A05Reti opening58238.0%55.8%
A06Reti opening21638.0%50.9%
A09Reti opening2245.5%54.5%
A04Reti v Dutch6025.0%60.8%
A05Reti, King's Indian attack8447.6%51.2%
A07Reti, King's Indian attack6732.8%46.3%
A08Reti, King's Indian attack6134.4%54.9%
A07Reti, King's Indian attack (Barcza system)60141.3%54.7%
A07Reti, King's Indian attack (with ...c5)5444.4%51.9%
A08Reti, King's Indian attack, French variation1323.1%42.3%
A07Reti, King's Indian attack, Keres variation4744.7%43.6%
A07Reti, King's Indian attack, Pachman system728.6%57.1%
A05Reti, King's Indian attack, Reti-Smyslov variation1145.5%50.0%
A05Reti, King's Indian attack, Spassky's variation4932.7%53.1%
A07Reti, King's Indian attack, Yugoslav variation22036.8%47.5%
A04Reti, Lisitsin gambit deferred250.0%25.0%
A06Reti, Nimzovich-Larsen attack18433.2%47.6%
A04Reti, Pirc-Lisitsin gambit1241.7%70.8%
A09Reti, advance variation7343.8%47.9%
A06Reti, old Indian attack2133.3%40.5%
B00Reversed Grob (Borg/Basman defence/macho Grob)425.0%87.5%
D01Richter-Veresov attack4721.3%38.3%
D01Richter-Veresov attack, Richter variation366.7%66.7%
D01Richter-Veresov attack, Veresov variation333.3%50.0%
B06Robatsch (modern) defence19328.5%57.8%
B06Robatsch defence2737.0%51.9%
B07Robatsch defence, Geller's system3633.3%63.9%
B06Robatsch defence, Gurgenidze variation30.0%66.7%
B06Robatsch defence, Pseudo-Austrian attack2218.2%72.7%
A41Robatsch defence, Rossolimo variation837.5%56.3%
B06Robatsch defence, Two knights variation40.0%75.0%
B06Robatsch defence, Two knights, Suttles variation4837.5%56.3%
B06Robatsch defence, three pawns attack1100.0%50.0%
C70Ruy Lopez20.0%50.0%
C60Ruy Lopez (Spanish opening)20.0%0.0%
C78Ruy Lopez, ...b5 & ...d6714.3%50.0%
C78Ruy Lopez, 5.O-O9037.8%63.3%
C70Ruy Lopez, Alapin's defence deferred1533.3%76.7%
C77Ruy Lopez, Anderssen variation5042.0%59.0%
C78Ruy Lopez, Archangelsk (counterthrust) variation12339.0%51.2%
C65Ruy Lopez, Berlin defence7934.2%51.3%
C65Ruy Lopez, Berlin defence, 4.O-O837.5%43.8%
C66Ruy Lopez, Berlin defence, 4.O-O, d61225.0%37.5%
C65Ruy Lopez, Berlin defence, Beverwijk variation4822.9%63.5%
C67Ruy Lopez, Berlin defence, Cordel variation30.0%66.7%
C65Ruy Lopez, Berlin defence, Duras variation20.0%50.0%
C65Ruy Lopez, Berlin defence, Kaufmann variation250.0%75.0%
C67Ruy Lopez, Berlin defence, Minckwitz variation30.0%66.7%
C65Ruy Lopez, Berlin defence, Nyholm attack1050.0%55.0%
C67Ruy Lopez, Berlin defence, Pillsbury variation10.0%0.0%
C67Ruy Lopez, Berlin defence, Winawer attack633.3%83.3%
C66Ruy Lopez, Berlin defence, hedgehog variation6653.0%61.4%
C67Ruy Lopez, Berlin defence, open variation44942.8%55.2%
C61Ruy Lopez, Bird's defence60.0%66.7%
C70Ruy Lopez, Caro variation1833.3%55.6%
C70Ruy Lopez, Classical defence deferred5848.3%55.2%
C60Ruy Lopez, Cozio defence616.7%91.7%
C60Ruy Lopez, Cozio defence, Paulsen variation20.0%50.0%
C85Ruy Lopez, Exchange variation doubly deferred (DERLD)32536.6%49.4%
C70Ruy Lopez, Graz variation4100.0%50.0%
C89Ruy Lopez, Marshall counter-attack2934.5%55.2%
C89Ruy Lopez, Marshall counter-attack, 11...c62227.3%50.0%
C89Ruy Lopez, Marshall, Kevitz variation1100.0%50.0%
C89Ruy Lopez, Marshall, main line, 12.d2d42445.8%43.8%
C89Ruy Lopez, Marshall, main line, 14...Qh33716.2%62.2%
C78Ruy Lopez, Moeller defence12634.9%54.8%
C77Ruy Lopez, Morphy defence8035.0%60.0%
C77Ruy Lopez, Morphy defence, Duras variation20.0%100.0%
C63Ruy Lopez, Schliemann defence30.0%66.7%
C63Ruy Lopez, Schliemann defence, Berger variation2030.0%60.0%
C74Ruy Lopez, Siesta, Kopayev variation1225.0%54.2%
C79Ruy Lopez, Steinitz defence deferred (Russian defence)7128.2%56.3%
C79Ruy Lopez, Steinitz defence deferred, Lipnitsky variation862.5%56.3%
C79Ruy Lopez, Steinitz defence deferred, Rubinstein variation1100.0%50.0%
C70Ruy Lopez, Taimanov (chase/wing/accelerated counterthrust) variation6526.2%68.5%
C88Ruy Lopez, Trajkovic counter-attack540.0%60.0%
C77Ruy Lopez, Treybal (Bayreuth) variation (exchange var. deferred)1346.2%53.8%
C77Ruy Lopez, Wormald (Alapin) attack3023.3%55.0%
C86Ruy Lopez, Worrall attack666.7%50.0%
C86Ruy Lopez, Worrall attack, sharp line3141.9%53.2%
C86Ruy Lopez, Worrall attack, solid line862.5%43.8%
C64Ruy Lopez, classical (Cordel) defence4327.9%48.8%
C64Ruy Lopez, classical defence, 4.c31931.6%63.2%
C64Ruy Lopez, classical defence, Benelux variation 11436.8%58.8%
C64Ruy Lopez, classical defence, Charousek variation250.0%75.0%
C88Ruy Lopez, closed17936.9%55.9%
C96Ruy Lopez, closed (10...c5)15638.5%55.1%
C96Ruy Lopez, closed (8...Na5)850.0%62.5%
C90Ruy Lopez, closed (with ...d6)35831.3%47.2%
C66Ruy Lopez, closed Berlin defence, Bernstein variation714.3%35.7%
C66Ruy Lopez, closed Berlin defence, Showalter variation3253.1%60.9%
C66Ruy Lopez, closed Berlin defence, Wolf variation3060.0%60.0%
C84Ruy Lopez, closed defence38537.1%54.9%
C88Ruy Lopez, closed, 7...O-O37036.2%55.1%
C88Ruy Lopez, closed, 8.c320.0%0.0%
C91Ruy Lopez, closed, 9.d426130.3%58.8%
C92Ruy Lopez, closed, 9.h36841.2%52.9%
C87Ruy Lopez, closed, Averbach variation5736.8%58.8%
C88Ruy Lopez, closed, Balla variation837.5%56.3%
C84Ruy Lopez, closed, Basque gambit (North Spanish variation)250.0%25.0%
C91Ruy Lopez, closed, Bogolyubov variation96537.3%53.1%
C96Ruy Lopez, closed, Borisenko defence1136.4%45.5%
C94Ruy Lopez, closed, Breyer defence250.0%25.0%
C95Ruy Lopez, closed, Breyer, Borisenko variation30435.2%55.8%
C95Ruy Lopez, closed, Breyer, Gligoric variation1729.4%61.8%
C95Ruy Lopez, closed, Breyer, Simagin variation560.0%70.0%
C97Ruy Lopez, closed, Chigorin defence27629.0%63.8%
C98Ruy Lopez, closed, Chigorin, 12...Nc67132.4%58.5%
C99Ruy Lopez, closed, Chigorin, 12...c5d448443.4%62.4%
C92Ruy Lopez, closed, Flohr-Zaitsev system (Lenzerheide variation)81337.6%55.4%
C96Ruy Lopez, closed, Keres (...Nd7) defence5223.1%67.3%
C92Ruy Lopez, closed, Keres (9...a5) variation366.7%33.3%
C92Ruy Lopez, closed, Kholmov variation2927.6%55.2%
C90Ruy Lopez, closed, Lutikov variation560.0%50.0%
C90Ruy Lopez, closed, Pilnik variation15737.6%46.2%
C92Ruy Lopez, closed, Ragozin-Petrosian (`Keres') variation5042.0%61.0%
C93Ruy Lopez, closed, Smyslov defence1729.4%50.0%
C90Ruy Lopez, closed, Suetin variation616.7%58.3%
C88Ruy Lopez, closed, anti-Marshall 8.a421632.9%51.2%
C84Ruy Lopez, closed, centre attack955.6%50.0%
C68Ruy Lopez, exchange variation1747.1%52.9%
C69Ruy Lopez, exchange variation, 5.O-O2934.5%51.7%
C69Ruy Lopez, exchange variation, Alapin gambit128.3%45.8%
C68Ruy Lopez, exchange, Alekhine variation333.3%16.7%
C69Ruy Lopez, exchange, Bronstein variation5324.5%50.0%
C69Ruy Lopez, exchange, Gligoric variation5135.3%64.7%
C68Ruy Lopez, exchange, Keres variation666.7%33.3%
C68Ruy Lopez, exchange, Romanovsky variation333.3%83.3%
C60Ruy Lopez, fianchetto (Smyslov/Barnes) defence1838.9%69.4%
C77Ruy Lopez, four knights (Tarrasch) variation2020.0%50.0%
C71Ruy Lopez, modern Steinitz defence1833.3%61.1%
C74Ruy Lopez, modern Steinitz defence837.5%81.3%
C75Ruy Lopez, modern Steinitz defence1338.5%50.0%
C72Ruy Lopez, modern Steinitz defence, 5.O-O4334.9%59.3%
C73Ruy Lopez, modern Steinitz defence, Alapin variation616.7%58.3%
C71Ruy Lopez, modern Steinitz defence, Duras (Keres) variation2123.8%50.0%
C73Ruy Lopez, modern Steinitz defence, Richter variation2240.9%56.8%
C75Ruy Lopez, modern Steinitz defence, Rubinstein variation911.1%72.2%
C71Ruy Lopez, modern Steinitz defence, Three knights variation742.9%64.3%
C76Ruy Lopez, modern Steinitz defence, fianchetto (Bronstein) variation5234.6%51.9%
C74Ruy Lopez, modern Steinitz defence, siesta variation10.0%100.0%
C62Ruy Lopez, old Steinitz defence9435.1%58.0%
C62Ruy Lopez, old Steinitz defence, Nimzovich attack30.0%33.3%
C80Ruy Lopez, open (Tarrasch) defence933.3%72.2%
C67Ruy Lopez, open Berlin defence, 5...Be7728.6%42.9%
C67Ruy Lopez, open Berlin defence, l'Hermet variation20.0%0.0%
C80Ruy Lopez, open, 6.d4475.0%62.5%
C80Ruy Lopez, open, 7.Bb31050.0%55.0%
C80Ruy Lopez, open, 8...Be69434.0%51.1%
C83Ruy Lopez, open, 9...Be7, 10.Re1742.9%78.6%
C80Ruy Lopez, open, Berger variation2100.0%50.0%
C80Ruy Lopez, open, Bernstein variation5036.0%66.0%
C80Ruy Lopez, open, Bernstein variation, Karpov gambit20.0%0.0%
C82Ruy Lopez, open, Dilworth variation540.0%20.0%
C80Ruy Lopez, open, Friess attack616.7%41.7%
C80Ruy Lopez, open, Harksen gambit10.0%100.0%
C81Ruy Lopez, open, Howell attack333.3%83.3%
C82Ruy Lopez, open, Italian variation20.0%100.0%
C83Ruy Lopez, open, Malkin variation475.0%62.5%
C82Ruy Lopez, open, Motzko attack366.7%66.7%
C80Ruy Lopez, open, Riga variation3100.0%50.0%
C80Ruy Lopez, open, Schlechter defence1100.0%50.0%
C82Ruy Lopez, open, St. Petersburg variation1010.0%55.0%
C80Ruy Lopez, open, Tartakower variation20.0%50.0%
C80Ruy Lopez, open, Zukertort variation10.0%100.0%
C83Ruy Lopez, open, classical defence2245.5%45.5%
A06Santasiere's folly1323.1%50.0%
A00Saragossa opening862.5%68.8%
B01Scandinavian (centre counter) defence8740.2%56.9%
B01Scandinavian defence3732.4%54.1%
B01Scandinavian defence, Gruenfeld variation20.0%50.0%
B01Scandinavian defence, Lasker variation1338.5%65.4%
B01Scandinavian gambit1553.3%60.0%
B01Scandinavian, Anderssen counter-attack orthodox attack10.0%100.0%
B01Scandinavian, Anderssen counter-attack, Collijn variation10.0%100.0%
B01Scandinavian, Icelandic gambit1050.0%55.0%
B01Scandinavian, Marshall variation8341.0%63.9%
B01Scandinavian, Pytel-Wade variation2152.4%54.8%
C44Scotch gambit1241.7%45.8%
C44Scotch gambit, Anderssen (Paulsen, Suhle) counter-attack10.0%0.0%
C44Scotch gambit, Benima defence1100.0%50.0%
C44Scotch gambit, Dubois-Reti defence4540.0%46.7%
C45Scotch game44941.0%54.1%
C45Scotch, Blackburne attack10.0%0.0%
C45Scotch, Blumenfeld attack450.0%25.0%
C45Scotch, Ghulam Kassim variation2100.0%50.0%
C44Scotch, Goering gambit837.5%43.8%
C45Scotch, Horwitz attack1225.0%70.8%
C44Scotch, Lolli variation1145.5%50.0%
C45Scotch, Meitner variation1100.0%50.0%
C45Scotch, Mieses variation25129.9%54.8%
C45Scotch, Potter variation837.5%68.8%
C44Scotch, Relfsson gambit ('MacLopez')20.0%100.0%
C45Scotch, Romanishin variation333.3%83.3%
C45Scotch, Schmidt variation11861.9%43.6%
C45Scotch, Steinitz variation20.0%50.0%
C45Scotch, Tartakower variation250.0%25.0%
A44Semi-Benoni (`blockade variation')250.0%75.0%
B50Sicilian35033.1%54.6%
B54Sicilian19734.5%54.8%
B56Sicilian29032.8%54.0%
B20Sicilian defence31234.3%49.2%
B27Sicilian defence250.0%75.0%
B30Sicilian defence30438.5%50.5%
B32Sicilian defence10025.0%58.5%
B33Sicilian defence9334.4%50.5%
B40Sicilian defence71633.2%54.7%
B44Sicilian defence11735.9%49.6%
B22Sicilian, 2.c3, Heidenfeld variation250.0%75.0%
B22Sicilian, Alapin's variation (2.c3)71538.5%53.6%
B40Sicilian, Anderssen variation11736.8%56.0%
B58Sicilian, Boleslavsky variation7745.5%44.8%
B59Sicilian, Boleslavsky variation, 7.Nb31118.2%54.5%
B58Sicilian, Boleslavsky, Louma variation10.0%100.0%
B51Sicilian, Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack15342.5%54.6%
B52Sicilian, Canal-Sokolsky attack, 3...Bd79053.3%54.4%
B52Sicilian, Canal-Sokolsky attack, Bronstein gambit2142.9%64.3%
B52Sicilian, Canal-Sokolsky attack, Sokolsky variation7241.7%56.9%
B53Sicilian, Chekhover variation7834.6%51.9%
B53Sicilian, Chekhover, Zaitsev variation30.0%66.7%
B32Sicilian, Flohr variation1330.8%61.5%
B21Sicilian, Grand Prix attack17236.0%51.7%
B23Sicilian, Grand Prix attack5529.1%50.9%
B23Sicilian, Grand Prix attack, Schofman variation450.0%50.0%
B27Sicilian, Hungarian variation15834.2%57.0%
B41Sicilian, Kan variation1827.8%58.3%
B42Sicilian, Kan, 5.Bd330535.4%58.4%
B43Sicilian, Kan, 5.Nc329437.8%56.6%
B42Sicilian, Kan, Gipslis variation1926.3%65.8%
B41Sicilian, Kan, Maroczy bind (Reti variation)4129.3%51.2%
B41Sicilian, Kan, Maroczy bind - Bronstein variation250.0%25.0%
B42Sicilian, Kan, Polugaievsky variation17635.8%54.8%
B42Sicilian, Kan, Swiss cheese variation2138.1%61.9%
B27Sicilian, Katalimov variation475.0%37.5%
B20Sicilian, Keres variation (2.Ne2)4341.9%58.1%
B32Sicilian, Labourdonnais-Loewenthal (Kalashnikov) variation7138.0%59.9%
B32Sicilian, Labourdonnais-Loewenthal variation2050.0%65.0%
B57Sicilian, Magnus Smith trap450.0%25.0%
B40Sicilian, Marshall variation10.0%100.0%
B90Sicilian, Najdorf35632.3%52.4%
B98Sicilian, Najdorf variation3426.5%66.2%
B95Sicilian, Najdorf, 6...e65326.4%32.1%
B94Sicilian, Najdorf, 6.Bg52821.4%57.1%
B93Sicilian, Najdorf, 6.f423742.6%51.3%
B98Sicilian, Najdorf, 7...Be72839.3%51.8%
B99Sicilian, Najdorf, 7...Be7 main line14318.2%52.4%
B97Sicilian, Najdorf, 7...Qb623122.9%44.8%
B96Sicilian, Najdorf, 7.f47131.0%50.7%
B90Sicilian, Najdorf, Adams attack1258.3%62.5%
B98Sicilian, Najdorf, Browne variation1118.2%81.8%
B90Sicilian, Najdorf, Byrne (English) attack421029.8%53.1%
B98Sicilian, Najdorf, Goteborg (Argentine) variation10.0%0.0%
B90Sicilian, Najdorf, Lipnitzky attack13431.3%50.7%
B92Sicilian, Najdorf, Opovcensky variation74037.2%49.3%
B97Sicilian, Najdorf, Poisoned pawn variation37344.0%49.3%
B96Sicilian, Najdorf, Polugayevsky variation757.1%28.6%
B96Sicilian, Najdorf, Polugayevsky, Simagin variation450.0%25.0%
B91Sicilian, Najdorf, Zagreb (fianchetto) variation4932.7%53.1%
B32Sicilian, Nimzovich variation30.0%33.3%
B31Sicilian, Nimzovich-Rossolimo attack (with ...g6, without ...d6)31536.2%55.9%
B30Sicilian, Nimzovich-Rossolimo attack (without ...d6)37835.2%53.3%
B31Sicilian, Nimzovich-Rossolimo attack, Gurgenidze variation1100.0%50.0%
B29Sicilian, Nimzovich-Rubinstein variation1233.3%66.7%
B29Sicilian, Nimzovich-Rubinstein; Rubinstein counter-gambit1216.7%41.7%
B28Sicilian, O'Kelly variation1154.5%63.6%
B33Sicilian, Pelikan (Lasker/Sveshnikov) variation9424.5%52.7%
B33Sicilian, Pelikan, Bird variation3435.3%58.8%
B33Sicilian, Pelikan, Chelyabinsk variation60029.7%60.8%
B40Sicilian, Pin variation (Sicilian counter-attack)10.0%100.0%
B40Sicilian, Pin, Koch variation425.0%87.5%
B54Sicilian, Prins (Moscow) variation6336.5%57.9%
B55Sicilian, Prins variation, Venice attack560.0%70.0%
B27Sicilian, Quinteros variation425.0%87.5%
B60Sicilian, Richter-Rauzer4837.5%68.8%
B62Sicilian, Richter-Rauzer, 6...e62030.0%55.0%
B60Sicilian, Richter-Rauzer, Bondarevsky variation30.0%33.3%
B62Sicilian, Richter-Rauzer, Keres variation1414.3%50.0%
B60Sicilian, Richter-Rauzer, Larsen variation1816.7%58.3%
B61Sicilian, Richter-Rauzer, Larsen variation, 7.Qd24334.9%54.7%
B62Sicilian, Richter-Rauzer, Margate (Alekhine) variation1118.2%36.4%
B62Sicilian, Richter-Rauzer, Podvebrady variation1070.0%45.0%
B63Sicilian, Richter-Rauzer, Rauzer attack2722.2%66.7%
B63Sicilian, Richter-Rauzer, Rauzer attack, 7...Be721733.6%54.6%
B65Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9...Nxd415938.4%56.9%
B64Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9.f49241.3%48.9%
B66Sicilian, Richter-Rauzer, Rauzer attack, 7...a6273531.6%51.1%
B69Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 11.Bxf64829.2%64.6%
B67Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 8...Bd777829.7%54.0%
B68Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 9...Be72729.6%66.7%
B64Sicilian, Richter-Rauzer, Rauzer attack, Geller variation1100.0%50.0%
B84Sicilian, Scheveningen (Paulsen), classical variation119036.1%49.7%
B80Sicilian, Scheveningen variation30627.8%54.4%
B83Sicilian, Scheveningen, 6.Be218938.1%47.6%
B82Sicilian, Scheveningen, 6.f47533.3%58.0%
B80Sicilian, Scheveningen, English variation5225.0%54.8%
B81Sicilian, Scheveningen, Keres attack44432.0%61.5%
B82Sicilian, Scheveningen, Tal variation728.6%57.1%
B80Sicilian, Scheveningen, Vitolins variation250.0%25.0%
B85Sicilian, Scheveningen, classical3148.4%56.5%
B85Sicilian, Scheveningen, classical main line12043.3%55.0%
B85Sicilian, Scheveningen, classical, Maroczy system1127.3%59.1%
B84Sicilian, Scheveningen, classical, Nd7 system1330.8%61.5%
B80Sicilian, Scheveningen, fianchetto variation4045.0%45.0%
B21Sicilian, Smith-Morra gambit1952.6%57.9%
B86Sicilian, Sozin attack1145.5%40.9%
B87Sicilian, Sozin with ...a6 and ...b515237.5%54.3%
B89Sicilian, Sozin, 7.Be325131.1%50.2%
B57Sicilian, Sozin, Benko variation25541.6%50.6%
B88Sicilian, Sozin, Leonhardt variation5827.6%56.9%
B57Sicilian, Sozin, not Scheveningen2250.0%61.4%
B20Sicilian, Steinitz variation12445.2%46.8%
B33Sicilian, Sveshnikov variation27537.5%51.8%
B44Sicilian, Szen (`anti-Taimanov') variation9742.3%49.0%
B44Sicilian, Szen variation, Dely-Kasparov gambit250.0%75.0%
B44Sicilian, Szen, hedgehog variation5937.3%61.0%
B47Sicilian, Taimanov (Bastrikov) variation111336.8%54.8%
B45Sicilian, Taimanov variation50235.5%57.4%
B46Sicilian, Taimanov variation76837.1%55.3%
B48Sicilian, Taimanov variation63736.3%52.0%
B49Sicilian, Taimanov variation15937.1%56.9%
B45Sicilian, Taimanov, American attack520.0%30.0%
B89Sicilian, Velimirovic attack14527.6%48.3%
B56Sicilian, Venice attack2055.0%47.5%
B39Sicilian, accelerated fianchetto, Breyer variation2646.2%50.0%
B36Sicilian, accelerated fianchetto, Gurgenidze variation3625.0%70.8%
B36Sicilian, accelerated fianchetto, Maroczy bind7347.9%52.7%
B37Sicilian, accelerated fianchetto, Maroczy bind, 5...Bg71060.0%50.0%
B38Sicilian, accelerated fianchetto, Maroczy bind, 6.Be38835.2%59.7%
B34Sicilian, accelerated fianchetto, exchange variation10.0%100.0%
B34Sicilian, accelerated fianchetto, modern variation3839.5%48.7%
B35Sicilian, accelerated fianchetto, modern variation with Bc411442.1%50.9%
B23Sicilian, chameleon variation4339.5%61.6%
B58Sicilian, classical2254.5%50.0%
B23Sicilian, closed39832.2%52.8%
B24Sicilian, closed4037.5%48.8%
B25Sicilian, closed2035.0%67.5%
B23Sicilian, closed, 2...Nc613039.2%53.5%
B26Sicilian, closed, 6.Be34932.7%42.9%
B25Sicilian, closed, 6.Ne2 e5 (Botvinnik)850.0%50.0%
B25Sicilian, closed, 6.f43528.6%48.6%
B25Sicilian, closed, 6.f4 e5 (Botvinnik)450.0%75.0%
B23Sicilian, closed, Korchnoi variation540.0%40.0%
B70Sicilian, dragon variation7433.8%52.0%
B72Sicilian, dragon, 6.Be3944.4%44.4%
B71Sicilian, dragon, Levenfish variation616.7%58.3%
B75Sicilian, dragon, Yugoslav attack2733.3%61.1%
B78Sicilian, dragon, Yugoslav attack, 10.O-O-O4820.8%47.9%
B79Sicilian, dragon, Yugoslav attack, 12.h4616.7%58.3%
B76Sicilian, dragon, Yugoslav attack, 7...O-O2722.2%44.4%
B77Sicilian, dragon, Yugoslav attack, 9...Bd72646.2%53.8%
B77Sicilian, dragon, Yugoslav attack, 9.Bc4837.5%31.3%
B76Sicilian, dragon, Yugoslav attack, Rauser variation13026.2%66.2%
B72Sicilian, dragon, classical attack666.7%50.0%
B73Sicilian, dragon, classical, 8.O-O3135.5%53.2%
B74Sicilian, dragon, classical, 9.Nb32035.0%42.5%
B74Sicilian, dragon, classical, Alekhine variation20.0%100.0%
B72Sicilian, dragon, classical, Amsterdam variation366.7%33.3%
B72Sicilian, dragon, classical, Grigoriev variation1100.0%50.0%
B72Sicilian, dragon, classical, Nottingham variation250.0%75.0%
B74Sicilian, dragon, classical, Reti-Tartakower variation520.0%70.0%
B73Sicilian, dragon, classical, Richter variation825.0%62.5%
B73Sicilian, dragon, classical, Zollner gambit540.0%60.0%
B83Sicilian, modern Scheveningen8831.8%48.9%
B83Sicilian, modern Scheveningen, main line7640.8%58.6%
B83Sicilian, modern Scheveningen, main line with Nb31435.7%67.9%
B20Sicilian, wing gambit250.0%75.0%
B20Sicilian, wing gambit, Carlsbad variation20.0%50.0%
C00St. George defence475.0%62.5%
A06Tennison (Lemberg, Zukertort) gambit10.0%100.0%
C46Three knights game2832.1%51.8%
C46Three knights, Steinitz variation825.0%62.5%
C46Three knights, Steinitz, Rosenthal variation10.0%0.0%
D03Torre attack (Tartakower variation)6737.3%47.0%
A45Trompovsky attack (Ruth, Opovcensky opening)21632.9%52.5%
C55Two knights defence742.9%64.3%
C56Two knights defence757.1%57.1%
C58Two knights defence837.5%68.8%
C59Two knights defence9041.1%56.1%
C55Two knights defence (Modern bishop's opening)12138.0%54.5%
C56Two knights defence, Canal variation1100.0%50.0%
C57Two knights defence, Fegatello attack10.0%0.0%
C57Two knights defence, Fegatello attack, Polerio defence30.0%100.0%
C59Two knights defence, Goering variation250.0%25.0%
C58Two knights defence, Paoli variation333.3%50.0%
C55Two knights defence, Perreux variation475.0%62.5%
C59Two knights defence, Steinitz variation21428.0%50.9%
C57Two knights defence, Ulvestad variation475.0%62.5%
C55Two knights, Max Lange attack, Steinitz variation10.0%100.0%
A00Van't Kruijs opening922.2%55.6%
C25Vienna gambit650.0%58.3%
C29Vienna gambit1040.0%50.0%
C29Vienna gambit, Breyer variation1040.0%80.0%
C25Vienna game6933.3%52.9%
C26Vienna game2330.4%63.0%
C27Vienna game742.9%21.4%
C28Vienna game3033.3%50.0%
C27Vienna, Alekhine variation250.0%75.0%
C26Vienna, Falkbeer variation837.5%56.3%
C26Vienna, Mengarini variation20.0%0.0%
C25Vienna, Paulsen variation366.7%66.7%
C26Vienna, Paulsen-Mieses variation4146.3%47.6%
C25Vienna, Pierce gambit1100.0%50.0%
A56Vulture defence1100.0%50.0%
B12de Bruycker defence30.0%66.7%

Created in 2005-2008 by CCRL team
Last games added on April 11, 2008