CCRL 40/40
Downloads and Statistics
November 18, 2017
Testing summary:
Total: 756'425 games
played by 1'967 programs
103446 CPU days (X2 4600+)

White wins: 259'856 (34.4%)
Black wins: 192'693 (25.5%)
Draws: 303'876 (40.2%)
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 opening1729.4%67.6%
B02Alekhine's defence52035.8%55.0%
B03Alekhine's defence7931.6%63.9%
B03Alekhine's defence, Balogh variation825.0%75.0%
B02Alekhine's defence, Brooklyn defence714.3%35.7%
B02Alekhine's defence, Kmoch variation714.3%21.4%
B02Alekhine's defence, Krejcik variation250.0%25.0%
B02Alekhine's defence, Maroczy variation8636.0%57.6%
B02Alekhine's defence, Saemisch attack24538.0%48.8%
B02Alekhine's defence, Scandinavian variation14136.9%56.7%
B02Alekhine's defence, Spielmann variation1435.7%46.4%
B02Alekhine's defence, Steiner variation944.4%55.6%
B02Alekhine's defence, Two pawns' (Lasker's) attack26644.4%54.9%
B03Alekhine's defence, exchange variation56339.3%58.3%
B03Alekhine's defence, exchange, Karpov variation650.0%58.3%
B03Alekhine's defence, four pawns attack22531.6%65.6%
B03Alekhine's defence, four pawns attack, 6...Nc61225.0%45.8%
B03Alekhine's defence, four pawns attack, 7.Be310735.5%67.3%
B03Alekhine's defence, four pawns attack, Ilyin-Genevsky var.742.9%21.4%
B03Alekhine's defence, four pawns attack, Planinc variation333.3%50.0%
B03Alekhine's defence, four pawns attack, Trifunovic variation5735.1%68.4%
B03Alekhine's defence, four pawns attack, fianchetto variation10731.8%57.9%
B04Alekhine's defence, modern variation22333.6%61.2%
B05Alekhine's defence, modern variation, 4...Bg456332.3%65.2%
B05Alekhine's defence, modern, Alekhine variation742.9%50.0%
B05Alekhine's defence, modern, Flohr variation9436.2%63.8%
B04Alekhine's defence, modern, Keres variation4434.1%71.6%
B04Alekhine's defence, modern, Larsen variation75641.9%60.6%
B05Alekhine's defence, modern, Panov variation911.1%50.0%
B04Alekhine's defence, modern, Schmid variation14438.2%61.5%
B05Alekhine's defence, modern, Vitolins attack450.0%50.0%
B04Alekhine's defence, modern, fianchetto variation61934.4%57.8%
A00Amar (Paris) opening1844.4%33.3%
A00Amar gambit10.0%0.0%
A00Amsterdam attack10.0%100.0%
A00Anderssen's opening39040.8%51.4%
A00Anti-Borg (Desprez) opening30.0%33.3%
A00Battambang opening1631.3%46.9%
A40Beefeater defence3321.2%68.2%
A57Benko gambit59336.8%56.3%
A59Benko gambit3743.2%62.2%
A58Benko gambit accepted63233.1%58.9%
A57Benko gambit half accepted76139.8%57.2%
A59Benko gambit, 7.e4633.3%50.0%
A58Benko gambit, Nd2 variation837.5%56.3%
A59Benko gambit, Ne2 variation30.0%33.3%
A57Benko gambit, Zaitsev system6839.7%46.3%
A58Benko gambit, fianchetto variation14143.3%62.1%
A59Benko gambit, main line11641.4%66.4%
A00Benko's opening574141.5%52.4%
A00Benko's opening, reversed Alekhine11342.5%48.7%
A56Benoni defence55933.8%58.9%
A60Benoni defence10725.2%64.0%
A61Benoni defence45931.6%62.9%
A56Benoni defence, Hromodka system37223.9%65.7%
A65Benoni, 6.e429325.9%56.0%
A66Benoni, Mikenas variation1723.5%47.1%
A61Benoni, Nimzovich (knight's tour) variation34228.4%59.2%
A67Benoni, Taimanov variation19924.6%62.6%
A61Benoni, Uhlmann variation19222.4%39.3%
A78Benoni, classical with ...Re8 and ...Na63638.9%58.3%
A75Benoni, classical with ...a6 and 10...Bg44725.5%72.3%
A70Benoni, classical with e4 and Nf353339.2%59.2%
A70Benoni, classical without 9.O-O425.0%37.5%
A72Benoni, classical without 9.O-O4641.3%62.0%
A79Benoni, classical, 11.f35228.8%58.7%
A71Benoni, classical, 8.Bg58728.7%54.6%
A76Benoni, classical, 9...Re88837.5%65.3%
A77Benoni, classical, 9...Re8, 10.Nd211825.4%67.8%
A74Benoni, classical, 9...a6, 10.a41942.1%73.7%
A73Benoni, classical, 9.O-O4827.1%57.3%
A61Benoni, fianchetto variation1414.3%78.6%
A62Benoni, fianchetto variation66935.0%56.2%
A64Benoni, fianchetto, 11...Re810540.0%41.9%
A63Benoni, fianchetto, 9...Nbd77034.3%64.3%
A68Benoni, four pawns attack7135.2%55.6%
A69Benoni, four pawns attack, main line7639.5%46.1%
A66Benoni, pawn storm variation540.0%60.0%
A02Bird's opening283736.3%48.8%
A03Bird's opening290636.0%47.8%
A03Bird's opening, Lasker variation8428.6%42.9%
A02Bird's opening, Swiss gambit250.0%75.0%
A03Bird's opening, Williams gambit2334.8%65.2%
A02Bird, From gambit14834.5%50.3%
A02Bird, From gambit, Lasker variation2955.2%58.6%
A02Bird, From gambit, Lipke variation10.0%0.0%
A02Bird, Hobbs gambit560.0%70.0%
C23Bishop's opening15536.8%54.5%
C24Bishop's opening, Berlin defence91741.8%53.9%
C23Bishop's opening, Calabrese counter-gambit, Jaenisch variation30.0%100.0%
C23Bishop's opening, Classical variation4839.6%53.1%
C23Bishop's opening, Lisitsyn variation10.0%0.0%
C23Bishop's opening, Lopez gambit20.0%0.0%
C23Bishop's opening, MacDonnell double gambit250.0%25.0%
C23Bishop's opening, Philidor counter-attack14157.4%49.3%
C23Bishop's opening, Philidor variation944.4%55.6%
C24Bishop's opening, Ponziani gambit250.0%25.0%
C24Bishop's opening, Urusov gambit4126.8%37.8%
D00Blackmar gambit19840.9%40.7%
A45Blackmar-Diemer gambit15930.2%48.4%
D00Blackmar-Diemer gambit3020.0%40.0%
D00Blackmar-Diemer, Euwe defence2623.1%42.3%
E10Blumenfeld counter-gambit29042.4%55.0%
E10Blumenfeld counter-gambit accepted11339.8%54.4%
E10Blumenfeld counter-gambit, Dus-Chotimursky variation15532.3%56.8%
E10Blumenfeld counter-gambit, Spielmann variation6338.1%57.1%
C27Boden-Kieseritsky gambit4032.5%31.3%
C27Boden-Kieseritsky gambit, Lichtenhein defence560.0%30.0%
E11Bogo-Indian defence134939.4%55.1%
E11Bogo-Indian defence, Gruenfeld variation178540.2%55.9%
E11Bogo-Indian defence, Monticelli trap1241.7%45.8%
E11Bogo-Indian defence, Nimzovich variation134838.1%58.2%
A52Budapest defence2050.0%55.0%
A51Budapest defence declined742.9%64.3%
A52Budapest, Adler variation14347.6%55.2%
A52Budapest, Alekhine variation1323.1%65.4%
A52Budapest, Alekhine variation, Balogh gambit1100.0%50.0%
A52Budapest, Alekhine, Abonyi variation5626.8%61.6%
A51Budapest, Fajarowicz variation3525.7%61.4%
A51Budapest, Fajarowicz, Steiner variation366.7%33.3%
A52Budapest, Rubinstein variation34340.2%60.3%
A45Canard opening1136.4%27.3%
B10Caro-Kann defence194435.8%53.0%
B12Caro-Kann defence18436.4%51.9%
B15Caro-Kann defence21132.2%51.7%
B12Caro-Kann, 3.Nd213942.4%58.6%
B15Caro-Kann, Alekhine gambit2339.1%50.0%
B16Caro-Kann, Bronstein-Larsen variation43831.3%62.2%
B12Caro-Kann, Edinburgh variation2740.7%57.4%
B15Caro-Kann, Forgacs variation20841.3%55.3%
B10Caro-Kann, Goldman (Spielmann) variation4742.6%48.9%
B15Caro-Kann, Gurgenidze counter-attack366.7%66.7%
B15Caro-Kann, Gurgenidze system28939.1%57.3%
B10Caro-Kann, Hillbilly attack20.0%50.0%
B13Caro-Kann, Panov-Botvinnik attack93447.8%53.1%
B14Caro-Kann, Panov-Botvinnik attack, 5...e6170346.3%55.5%
B14Caro-Kann, Panov-Botvinnik attack, 5...g629549.8%53.7%
B13Caro-Kann, Panov-Botvinnik, Czerniak variation2630.8%50.0%
B13Caro-Kann, Panov-Botvinnik, Gunderam attack1118.2%54.5%
B13Caro-Kann, Panov-Botvinnik, Herzog defence1435.7%46.4%
B13Caro-Kann, Panov-Botvinnik, Reifir (Spielmann) variation10.0%100.0%
B13Caro-Kann, Panov-Botvinnik, normal variation8650.0%56.4%
B15Caro-Kann, Rasa-Studier gambit911.1%38.9%
B17Caro-Kann, Steinitz variation356542.8%53.7%
B15Caro-Kann, Tartakower (Nimzovich) variation29541.0%55.1%
B12Caro-Kann, Tartakower (fantasy) variation54337.4%54.4%
B10Caro-Kann, Two knights variation27937.3%60.2%
B11Caro-Kann, Two knights, 3...Bg472639.3%55.7%
B12Caro-Kann, advance variation918838.1%56.3%
B12Caro-Kann, advance, Short variation4833.3%52.1%
B10Caro-Kann, anti-Caro-Kann defence50133.3%60.2%
B10Caro-Kann, anti-anti-Caro-Kann defence126648.6%52.3%
B18Caro-Kann, classical variation142945.0%54.3%
B18Caro-Kann, classical, 6.h448540.8%54.6%
B19Caro-Kann, classical, 7...Nd736850.8%52.9%
B18Caro-Kann, classical, Flohr variation7458.1%48.0%
B18Caro-Kann, classical, Maroczy attack1020.0%40.0%
B19Caro-Kann, classical, Spassky variation260239.5%56.7%
B10Caro-Kann, closed (Breyer) variation58438.5%52.1%
B13Caro-Kann, exchange variation73140.2%52.0%
B13Caro-Kann, exchange, Rubinstein variation12135.5%52.5%
B12Caro-Masi defence1100.0%50.0%
B00Carr's defence450.0%50.0%
E00Catalan opening291642.5%55.2%
E01Catalan, closed42248.3%51.9%
E06Catalan, closed, 5.Nf3278148.5%53.8%
E07Catalan, closed, 6...Nbd75738.6%50.9%
E08Catalan, closed, 7.Qc27939.2%60.1%
E07Catalan, closed, Botvinnik variation6344.4%42.9%
E08Catalan, closed, Qc2 & b318040.6%50.8%
E08Catalan, closed, Spassky gambit728.6%57.1%
E09Catalan, closed, main line20334.0%60.3%
E04Catalan, open, 5.Nf3396643.5%53.3%
E02Catalan, open, 5.Qa413246.2%58.7%
E03Catalan, open, 5.Qa4 Nbd7, 6.Qxc47054.3%40.0%
E03Catalan, open, Alekhine variation1421.4%39.3%
E05Catalan, open, classical line9252.2%55.4%
C21Centre game14343.4%58.0%
C22Centre game39438.3%46.3%
C22Centre game, Berger variation35237.5%54.8%
C22Centre game, Charousek variation450.0%50.0%
C22Centre game, Hall variation540.0%40.0%
C22Centre game, Paulsen attack18137.0%51.7%
A00Clemenz (Mead's, Basman's or de Klerk's) opening2931.0%43.1%
D05Colle system16348.5%54.9%
B00Corn stalk defence250.0%25.0%
A56Czech Benoni defence26927.9%68.2%
A56Czech Benoni, King's Indian system3611.1%66.7%
C21Danish gambit10941.3%47.2%
C21Danish gambit, Collijn defence475.0%37.5%
C21Danish gambit, Schlechter defence714.3%50.0%
C21Danish gambit, Soerensen defence2860.7%55.4%
E10Doery defence2142.9%54.8%
C44Dresden opening20.0%0.0%
A00Dunst (Sleipner, Heinrichsen) opening149335.8%49.6%
A00Durkin's attack650.0%41.7%
A80Dutch174435.4%54.4%
A81Dutch defence292738.4%56.9%
A84Dutch defence50839.4%55.5%
A90Dutch defence92839.1%61.2%
A91Dutch defence8433.3%52.4%
A92Dutch defence4452.3%58.0%
A92Dutch defence, Alekhine variation3540.0%62.9%
A81Dutch defence, Blackburne variation4528.9%52.2%
A90Dutch defence, Dutch-Indian (Nimzo-Dutch) variation17935.8%60.9%
A84Dutch defence, Rubinstein variation25333.6%59.1%
A85Dutch with c4 & Nc357535.5%54.6%
A86Dutch with c4 & g38138.3%66.0%
A80Dutch, 2.Bg5 variation77133.1%54.0%
A82Dutch, Balogh defence633.3%83.3%
A86Dutch, Hort-Antoshin system2100.0%50.0%
A97Dutch, Ilyin-Genevsky variation2218.2%54.5%
A98Dutch, Ilyin-Genevsky variation with Qc23429.4%52.9%
A99Dutch, Ilyin-Genevsky variation with b38035.0%65.0%
A97Dutch, Ilyin-Genevsky, Winter variation6541.5%63.8%
A80Dutch, Korchnoi attack837.5%43.8%
A80Dutch, Krejcik gambit26534.3%54.2%
A86Dutch, Leningrad variation13234.8%56.1%
A81Dutch, Leningrad, Basman system450.0%75.0%
A81Dutch, Leningrad, Karlsbad variation475.0%62.5%
A87Dutch, Leningrad, main variation30040.3%54.5%
A89Dutch, Leningrad, main variation with Nc633536.7%63.4%
A88Dutch, Leningrad, main variation with c678538.5%57.2%
A80Dutch, Manhattan (Alapin, Ulvestad) variation1741.2%61.8%
A82Dutch, Staunton gambit10135.6%34.7%
A84Dutch, Staunton gambit deferred955.6%27.8%
A83Dutch, Staunton gambit, Alekhine variation250.0%25.0%
A83Dutch, Staunton gambit, Chigorin variation6933.3%52.9%
A83Dutch, Staunton gambit, Lasker variation1145.5%40.9%
A83Dutch, Staunton gambit, Nimzovich variation20.0%0.0%
A83Dutch, Staunton gambit, Staunton's line11536.5%50.4%
A82Dutch, Staunton gambit, Tartakower variation616.7%41.7%
A96Dutch, classical variation17035.9%62.1%
A92Dutch, stonewall variation6048.3%57.5%
A94Dutch, stonewall with Ba34151.2%57.3%
A92Dutch, stonewall with Nc31030.0%45.0%
A95Dutch, stonewall with Nc320529.3%58.5%
A93Dutch, stonewall, Botwinnik variation8529.4%59.4%
A95Dutch, stonewall: Chekhover variation1100.0%50.0%
A90Dutch-Indian, Alekhine variation4136.6%54.9%
E10Dzindzikhashvili defence5549.1%59.1%
A10English opening238437.6%55.0%
A13English opening177636.7%51.7%
A15English opening976642.7%53.5%
A16English opening121335.9%53.1%
A17English opening21137.9%53.6%
A20English opening507138.1%54.5%
A21English opening130633.1%54.5%
A22English opening68736.8%50.7%
A13English opening, Agincourt variation114640.1%54.2%
A15English, 1...Nf6 (Anglo-Indian defense)103639.6%55.1%
A10English, Adorjan defence36838.3%54.5%
A10English, Anglo-Dutch defense61133.2%52.9%
A16English, Anglo-Gruenfeld defense21541.9%53.0%
A16English, Anglo-Gruenfeld defense, Korchnoi variation8836.4%58.0%
A16English, Anglo-Gruenfeld, Czech defense15633.3%63.5%
A16English, Anglo-Gruenfeld, Smyslov defense15232.2%54.9%
A22English, Bellon gambit1136.4%63.6%
A12English, Bled variation1643.8%59.4%
A26English, Botvinnik system29237.7%52.4%
A28English, Bradley Beach variation5221.2%37.5%
A24English, Bremen system with ...g614441.7%48.6%
A23English, Bremen system, Keres variation53140.7%48.2%
A22English, Bremen, Smyslov system140538.7%48.7%
A22English, Bremen, reverse dragon61940.7%50.4%
A12English, Capablanca's variation6835.3%47.1%
A22English, Carls' Bremen system33339.9%54.2%
A11English, Caro-Kann defensive system118640.2%53.9%
A12English, Caro-Kann defensive system16738.3%49.1%
A12English, Caro-Kann defensive system, Bogolyubov variation8048.8%53.1%
A10English, Jaenisch gambit20.0%100.0%
A21English, Keres variation1030.0%45.0%
A21English, Kramnik-Shirov counterattack175041.0%52.5%
A13English, Kurajica defence6330.2%59.5%
A12English, London defensive system12241.8%51.2%
A18English, Mikenas-Carls variation9245.7%57.6%
A18English, Mikenas-Carls, Flohr variation28537.5%59.8%
A18English, Mikenas-Carls, Kevitz variation2025.0%47.5%
A19English, Mikenas-Carls, Sicilian variation32242.5%54.2%
A28English, Nenarokov variation12040.0%51.7%
A13English, Neo-Catalan67640.7%52.9%
A13English, Neo-Catalan accepted104545.6%56.7%
A14English, Neo-Catalan declined76243.6%54.2%
A12English, New York (London) defensive system3452.9%44.1%
A17English, Nimzo-English opening161839.6%53.5%
A20English, Nimzovich variation6439.1%57.0%
A20English, Nimzovich, Flohr variation13538.5%42.2%
A17English, Queens Indian formation21236.8%59.9%
A17English, Queens Indian, Romanishin variation5628.6%58.9%
A13English, Romanishin gambit24641.1%56.3%
A25English, Sicilian reversed66633.6%52.0%
A21English, Smyslov defence3630.6%59.7%
A14English, Symmetrical, Keres defence50247.2%57.1%
A12English, Torre defensive system3842.1%57.9%
A21English, Troeger defence12030.0%53.3%
A13English, Wimpey system10642.5%51.4%
A25English, closed system71434.5%53.8%
A26English, closed system28537.5%52.1%
A25English, closed system (without ...d6)11728.2%55.1%
A25English, closed, 5.Rb140939.9%52.2%
A25English, closed, 5.Rb1 Taimanov variation20.0%50.0%
A25English, closed, Hort variation3636.1%54.2%
A25English, closed, Taimanov variation2010.0%65.0%
A28English, four knights system33844.1%51.0%
A28English, four knights, 4.e393936.2%52.0%
A28English, four knights, Capablanca variation40337.5%55.2%
A28English, four knights, Marini variation75339.6%51.1%
A28English, four knights, Nimzovich variation45834.3%54.0%
A28English, four knights, Romanishin variation42850.5%52.8%
A28English, four knights, Stean variation8342.2%59.6%
A29English, four knights, kingside fianchetto583941.0%51.8%
A30English, symmetrical variation277039.5%54.4%
A32English, symmetrical variation32442.0%58.0%
A33English, symmetrical variation140048.4%54.4%
A34English, symmetrical variation88139.2%54.1%
A35English, symmetrical variation20834.6%51.9%
A36English, symmetrical variation10636.8%56.1%
A37English, symmetrical variation88640.6%50.1%
A38English, symmetrical variation50245.2%55.5%
A31English, symmetrical, Benoni formation83640.4%55.7%
A36English, symmetrical, Botvinnik system15133.8%52.0%
A36English, symmetrical, Botvinnik system reversed6136.1%55.7%
A37English, symmetrical, Botvinnik system reversed68137.3%50.7%
A33English, symmetrical, Geller variation57838.9%54.2%
A34English, symmetrical, Rubinstein system36339.1%52.6%
A35English, symmetrical, four knights system193243.7%53.6%
A30English, symmetrical, hedgehog system252746.7%55.7%
A30English, symmetrical, hedgehog, flexible formation17643.2%54.5%
A38English, symmetrical, main line with b31100.0%50.0%
A38English, symmetrical, main line with d313048.5%52.7%
A39English, symmetrical, main line with d440741.8%57.5%
A34English, symmetrical, three knights system107341.5%55.1%
A27English, three knights system46134.7%53.1%
A36English, ultra-symmetrical variation116638.4%53.0%
C51Evans counter-gambit250.0%75.0%
C51Evans gambit450.0%75.0%
C52Evans gambit26740.1%47.8%
C51Evans gambit declined1816.7%58.3%
C51Evans gambit declined, 5.a415941.5%45.3%
C51Evans gambit declined, Lange variation20.0%0.0%
C51Evans gambit declined, Showalter variation2441.7%50.0%
C51Evans gambit, 5...Be73636.1%56.9%
C52Evans gambit, Alapin-Steinitz variation250.0%25.0%
C51Evans gambit, Cordel variation6952.2%44.9%
C51Evans gambit, Fraser attack20.0%100.0%
C51Evans gambit, Goering attack10.0%100.0%
C52Evans gambit, Lasker defence616.7%25.0%
C52Evans gambit, Levenfish variation616.7%25.0%
C51Evans gambit, Morphy attack2040.0%55.0%
C51Evans gambit, Paulsen variation1827.8%69.4%
C52Evans gambit, Richardson attack1936.8%28.9%
C52Evans gambit, Sanders-Alapin variation20.0%100.0%
C51Evans gambit, Stone-Ware variation19235.4%50.5%
C52Evans gambit, Tartakower attack6844.1%44.1%
C52Evans gambit, Waller attack60.0%100.0%
C52Evans gambit, compromised defence4221.4%72.6%
C52Evans gambit, compromised defence, Paulsen variation1625.0%62.5%
C51Evans gambit, normal variation1921.1%47.4%
C49Four knights6454.7%49.2%
C46Four knights game57943.2%50.3%
C48Four knights, Bardeleben variation850.0%50.0%
C47Four knights, Belgrade gambit10647.2%53.8%
C49Four knights, Gunsberg counter-attack1100.0%50.0%
C46Four knights, Gunsberg variation7648.7%49.3%
C46Four knights, Italian variation15642.3%48.7%
C49Four knights, Janowski variation1540.0%60.0%
C48Four knights, Marshall variation20.0%0.0%
C49Four knights, Nimzovich (Paulsen) variation5358.5%57.5%
C48Four knights, Ranken variation1442.9%64.3%
C48Four knights, Rubinstein counter-gambit98039.0%52.8%
C48Four knights, Rubinstein counter-gambit, 5.Be22100.0%50.0%
C48Four knights, Rubinstein counter-gambit, Bogolyubov variation1546.7%43.3%
C48Four knights, Rubinstein counter-gambit, Henneberger variation5940.7%50.8%
C48Four knights, Rubinstein counter-gambit, exchange variation14064.3%52.9%
C46Four knights, Schultze-Mueller gambit30.0%33.3%
C47Four knights, Scotch variation1315.4%61.5%
C47Four knights, Scotch, 4...exd445649.8%53.8%
C47Four knights, Scotch, Krause variation3135.5%62.9%
C48Four knights, Spanish variation20952.2%57.7%
C48Four knights, Spanish, classical defence16445.1%50.6%
C48Four knights, Spielmann variation366.7%33.3%
C49Four knights, Svenonius variation10.0%100.0%
C49Four knights, double Ruy Lopez5942.4%63.6%
C49Four knights, symmetrical variation18042.8%55.3%
C49Four knights, symmetrical, Blake variation2100.0%50.0%
C49Four knights, symmetrical, Capablanca variation2259.1%61.4%
C49Four knights, symmetrical, Maroczy system5147.1%51.0%
C49Four knights, symmetrical, Metger unpin32136.8%50.8%
C49Four knights, symmetrical, Pillsbury variation4259.5%48.8%
C49Four knights, symmetrical, Tarrasch variation1650.0%50.0%
C00French defence47633.6%57.4%
C11French defence14740.8%54.4%
C00French defence, Steiner variation68643.3%51.1%
C00French, Alapin variation475.0%62.5%
C13French, Albin-Alekhine-Chatard attack23131.2%53.7%
C13French, Albin-Alekhine-Chatard attack, Breyer variation6839.7%65.4%
C13French, Albin-Alekhine-Chatard attack, Maroczy variation1233.3%66.7%
C13French, Albin-Alekhine-Chatard attack, Spielmann variation5742.1%70.2%
C13French, Albin-Alekhine-Chatard attack, Teichmann variation250.0%75.0%
C11French, Burn variation485244.2%52.9%
C00French, Chigorin variation69231.6%50.8%
C10French, Fort Knox variation58240.4%57.3%
C10French, Frere (Becker) variation1741.2%61.8%
C11French, Henneberger variation1338.5%50.0%
C00French, King's Indian attack196537.8%51.0%
C00French, Labourdonnais variation21432.2%45.6%
C12French, MacCutcheon variation10842.6%50.0%
C12French, MacCutcheon, Bernstein variation1729.4%61.8%
C12French, MacCutcheon, Bogolyubov variation1100.0%50.0%
C12French, MacCutcheon, Chigorin variation6038.3%45.8%
C12French, MacCutcheon, Dr. Olland (Dutch) variation4825.0%66.7%
C12French, MacCutcheon, Duras variation425.0%62.5%
C12French, MacCutcheon, Grigoriev variation2138.1%57.1%
C12French, MacCutcheon, Janowski variation12836.7%57.4%
C12French, MacCutcheon, Lasker variation20327.6%59.1%
C12French, MacCutcheon, Lasker variation, 8...g636436.0%59.5%
C12French, MacCutcheon, Tartakower variation20.0%100.0%
C12French, MacCutcheon, advance variation1428.6%21.4%
C10French, Marshall variation250.0%25.0%
C10French, Paulsen variation57133.5%58.2%
C00French, Pelikan variation6435.9%52.3%
C00French, Reti (Spielmann) variation15441.6%51.3%
C00French, Reversed Philidor formation1136.4%63.6%
C10French, Rubinstein variation203949.1%55.4%
C10French, Rubinstein, Capablanca line771.4%50.0%
C00French, Schlechter variation17041.2%49.4%
C00French, Steinitz attack911.1%27.8%
C11French, Steinitz variation92238.8%54.4%
C11French, Steinitz, Boleslavsky variation315935.1%57.5%
C11French, Steinitz, Bradford attack1100.0%50.0%
C11French, Steinitz, Gledhill attack11233.0%54.9%
C11French, Swiss variation4247.6%57.1%
C03French, Tarrasch185844.8%56.9%
C05French, Tarrasch, Botvinnik variation4330.2%64.0%
C07French, Tarrasch, Eliskases variation11146.8%53.2%
C04French, Tarrasch, Guimard main line30729.0%59.4%
C03French, Tarrasch, Guimard variation5625.0%66.1%
C06French, Tarrasch, Leningrad variation1717.6%85.3%
C05French, Tarrasch, closed variation91431.7%60.1%
C06French, Tarrasch, closed variation, main line98337.7%59.5%
C07French, Tarrasch, open variation343347.7%53.5%
C09French, Tarrasch, open variation, main line101748.9%56.9%
C08French, Tarrasch, open, 4.ed ed121150.3%54.5%
C00French, Two knights variation19435.6%51.3%
C15French, Winawer (Nimzovich) variation66241.1%55.7%
C15French, Winawer, Alekhine (Maroczy) gambit15336.6%54.9%
C15French, Winawer, Alekhine gambit20.0%50.0%
C15French, Winawer, Alekhine gambit, Kan variation4445.5%45.5%
C15French, Winawer, Kondratiyev variation1100.0%50.0%
C16French, Winawer, Petrosian variation18731.6%54.8%
C16French, Winawer, advance variation68134.5%57.6%
C17French, Winawer, advance variation5442.6%58.3%
C18French, Winawer, advance variation42526.8%63.1%
C17French, Winawer, advance, 5.a333931.0%63.3%
C19French, Winawer, advance, 6...Ne725934.4%56.6%
C17French, Winawer, advance, Bogolyubov variation33439.2%51.0%
C17French, Winawer, advance, Rauzer variation837.5%68.8%
C17French, Winawer, advance, Russian variation5238.5%53.8%
C19French, Winawer, advance, Smyslov variation14727.2%61.2%
C19French, Winawer, advance, poisoned pawn variation239233.5%60.7%
C19French, Winawer, advance, poisoned pawn, Euwe-Gligoric variation30.0%33.3%
C19French, Winawer, advance, poisoned pawn, Konstantinopolsky variation52429.2%62.7%
C19French, Winawer, advance, positional main line99430.4%57.4%
C18French, Winawer, classical variation26832.1%58.2%
C15French, Winawer, fingerslip variation3043.3%35.0%
C00French, Wing gambit2850.0%57.1%
C02French, advance variation107232.7%55.8%
C02French, advance, Euwe variation123635.9%54.2%
C02French, advance, Milner-Barry gambit9634.4%46.4%
C02French, advance, Nimzovich system9431.9%44.7%
C02French, advance, Nimzovich variation560.0%50.0%
C02French, advance, Paulsen attack168733.5%54.7%
C02French, advance, Steinitz variation34033.2%53.1%
C02French, advance, Wade variation32239.4%56.7%
C13French, classical2842.9%42.9%
C14French, classical variation425.0%12.5%
C14French, classical, Alapin variation8446.4%54.2%
C13French, classical, Anderssen variation1127.3%40.9%
C13French, classical, Anderssen-Richter variation825.0%50.0%
C13French, classical, Frankfurt variation837.5%81.3%
C14French, classical, Pollock variation714.3%35.7%
C14French, classical, Rubinstein variation2737.0%55.6%
C14French, classical, Stahlberg variation650.0%58.3%
C14French, classical, Steinitz variation65735.0%57.8%
C14French, classical, Tarrasch variation70.0%57.1%
C13French, classical, Tartakower variation2236.4%45.5%
C13French, classical, Vistaneckis (Nimzovich) variation90.0%66.7%
C01French, exchange variation123744.0%53.6%
C01French, exchange, Bogolyubov variation333.3%50.0%
C01French, exchange, Svenonius variation3339.4%56.1%
C50Giuoco Pianissimo144438.5%53.0%
C50Giuoco Pianissimo, Canal variation17843.8%52.8%
C50Giuoco Pianissimo, Italian four knights variation35038.6%51.6%
C50Giuoco Piano42441.5%52.4%
C53Giuoco Piano184537.9%52.7%
C54Giuoco Piano16853.6%52.4%
C53Giuoco Piano, Anderssen variation1855.6%38.9%
C53Giuoco Piano, Bird's attack12931.8%49.2%
C53Giuoco Piano, LaBourdonnais variation911.1%61.1%
C53Giuoco Piano, Mestel variation1100.0%50.0%
C54Giuoco Piano, Moeller (Therkatz) attack3644.4%47.2%
C54Giuoco Piano, Moeller, bayonet attack10.0%100.0%
C54Giuoco Piano, Therkatz-Herzog variation10.0%0.0%
C53Giuoco Piano, centre-holding variation3636.1%59.7%
C53Giuoco Piano, close variation2030.0%75.0%
C50Giuoco Piano, four knights variation5236.5%51.0%
C55Giuoco piano20.0%50.0%
A00Global opening425.0%62.5%
C40Greco defence1030.0%45.0%
A00Grob's attack18643.5%34.7%
A00Grob, Fritz gambit5143.1%27.5%
A00Grob, Romford counter-gambit425.0%62.5%
A00Grob, spike attack633.3%33.3%
D80Gruenfeld defence66748.0%54.7%
D99Gruenfeld defence, Smyslov, Yugoslav variation1127.3%50.0%
D99Gruenfeld defence, Smyslov, main line15939.0%59.1%
D93Gruenfeld with Bf4 e325049.6%52.0%
D94Gruenfeld with e3 Bd31844.4%55.6%
D95Gruenfeld with e3 & Qb31457.1%64.3%
D82Gruenfeld, 4.Bf450345.1%53.6%
D92Gruenfeld, 5.Bf465044.8%57.0%
D91Gruenfeld, 5.Bg583739.1%48.1%
D94Gruenfeld, 5.e339644.9%57.8%
D95Gruenfeld, Botvinnik variation6442.2%50.8%
D94Gruenfeld, Flohr defence1850.0%58.3%
D90Gruenfeld, Flohr variation22936.7%55.0%
D83Gruenfeld, Gruenfeld gambit1729.4%67.6%
D84Gruenfeld, Gruenfeld gambit accepted4551.1%54.4%
D83Gruenfeld, Gruenfeld gambit, Botvinnik variation1573.3%63.3%
D83Gruenfeld, Gruenfeld gambit, Capablanca variation18046.7%55.6%
D80Gruenfeld, Lundin variation10.0%0.0%
D94Gruenfeld, Makogonov variation7548.0%46.7%
D94Gruenfeld, Opovcensky variation13240.9%54.5%
D81Gruenfeld, Russian variation30542.0%63.0%
D96Gruenfeld, Russian variation19838.9%55.8%
D97Gruenfeld, Russian variation with e42532.0%60.0%
D97Gruenfeld, Russian, Alekhine (Hungarian) variation152244.3%51.2%
D97Gruenfeld, Russian, Byrne (Simagin) variation11838.1%58.9%
D98Gruenfeld, Russian, Keres variation1136.4%54.5%
D97Gruenfeld, Russian, Levenfish variation742.9%64.3%
D97Gruenfeld, Russian, Prins variation42942.7%57.9%
D98Gruenfeld, Russian, Smyslov variation23441.5%60.0%
D97Gruenfeld, Russian, Szabo (Boleslavsky) variation18343.7%57.9%
D90Gruenfeld, Schlechter variation1833.3%38.9%
D94Gruenfeld, Smyslov defence15446.8%57.1%
D88Gruenfeld, Spassky variation, main line, 10...cd, 11.cd19142.4%61.0%
D89Gruenfeld, Spassky variation, main line, 13.Bd37038.6%49.3%
D80Gruenfeld, Stockholm variation65742.9%54.3%
D90Gruenfeld, Three knights variation45747.3%54.7%
D85Gruenfeld, exchange variation246847.6%56.5%
D86Gruenfeld, exchange, Larsen variation30.0%66.7%
D87Gruenfeld, exchange, Seville variation7754.5%62.3%
D86Gruenfeld, exchange, Simagin's improved variation9739.2%51.5%
D86Gruenfeld, exchange, Simagin's lesser variation2832.1%55.4%
D89Gruenfeld, exchange, Sokolsky variation850.0%37.5%
D87Gruenfeld, exchange, Spassky variation46942.0%54.3%
D86Gruenfeld, exchange, classical variation97545.6%55.2%
D85Gruenfeld, modern exchange variation299346.2%55.9%
C40Gunderam defence6728.4%70.9%
C21Halasz gambit450.0%50.0%
A43Hawk (Habichd) defence366.7%33.3%
C50Hungarian defence15640.4%49.7%
C44Inverted Hanham2433.3%45.8%
C44Inverted Hungarian2045.0%57.5%
C36KGA, Abbazia defence (classical defence, modern defence[!])3537.1%67.1%
C36KGA, Abbazia defence, modern variation18940.2%45.0%
C39KGA, Allgaier, Thorold variation10.0%0.0%
C39KGA, Allgaier, Walker attack10.0%0.0%
C34KGA, Becker defence2941.4%48.3%
C37KGA, Blachly gambit2138.1%33.3%
C34KGA, Bonsch-Osmolovsky variation2437.5%56.3%
C33KGA, Breyer gambit333.3%50.0%
C33KGA, Carrera (Basman) gambit10.0%100.0%
C37KGA, Cochrane gambit333.3%50.0%
C35KGA, Cunningham defence5139.2%47.1%
C35KGA, Cunningham, Euwe defence1827.8%58.3%
C34KGA, Fischer defence11630.2%44.4%
C34KGA, Gianutio counter-gambit2100.0%50.0%
C38KGA, Hanstein gambit837.5%43.8%
C33KGA, Keres (Mason-Steinitz) gambit1450.0%32.1%
C39KGA, Kieseritsky, Berlin defence5639.3%41.1%
C39KGA, Kieseritsky, Berlin defence, 6.Bc44030.0%35.0%
C39KGA, Kieseritsky, Brentano (Campbell) defence10.0%100.0%
C39KGA, Kieseritsky, Brentano defence10.0%100.0%
C39KGA, Kieseritsky, Kolisch defence7542.7%44.0%
C39KGA, Kieseritsky, Neumann defence1163.6%68.2%
C39KGA, Kieseritsky, Paulsen defence825.0%37.5%
C39KGA, Kieseritsky, Rice gambit1723.5%29.4%
C39KGA, Kieseritsky, Salvio (Rosenthal) defence4351.2%39.5%
C39KGA, Kieseritsky, long whip (Stockwhip, classical) defence540.0%40.0%
C37KGA, King's knight's gambit1369.2%65.4%
C33KGA, Lesser bishop's (Petroff-Jaenisch-Tartakower) gambit333.3%50.0%
C37KGA, Muzio gambit944.4%33.3%
C37KGA, Muzio gambit, Brentano defence425.0%62.5%
C37KGA, Muzio gambit, From defence1100.0%50.0%
C38KGA, Philidor gambit128.3%29.2%
C37KGA, Quaade gambit633.3%16.7%
C37KGA, Rosentreter gambit875.0%37.5%
C37KGA, Salvio gambit250.0%75.0%
C37KGA, Salvio gambit, Anderssen counter-attack40.0%50.0%
C34KGA, Schallop defence1729.4%73.5%
C33KGA, bishop's gambit3836.8%47.4%
C33KGA, bishop's gambit, Bledow variation2412.5%31.3%
C33KGA, bishop's gambit, Boden defence250.0%25.0%
C33KGA, bishop's gambit, Bogolyubov variation728.6%28.6%
C33KGA, bishop's gambit, Cozio (Morphy) defence2100.0%50.0%
C33KGA, bishop's gambit, Gifford variation333.3%50.0%
C33KGA, bishop's gambit, Jaenisch variation8843.2%48.9%
C33KGA, bishop's gambit, Lopez-Gianutio counter-gambit425.0%62.5%
C33KGA, bishop's gambit, Maurian defence666.7%50.0%
C33KGA, bishop's gambit, Morphy variation1729.4%61.8%
C33KGA, bishop's gambit, Paulsen attack450.0%50.0%
C33KGA, bishop's gambit, Ruy Lopez defence1442.9%50.0%
C33KGA, bishop's gambit, Steinitz defence1741.2%38.2%
C33KGA, bishop's gambit, classical defence10.0%0.0%
C30KGD, 2...Nf62626.9%59.6%
C31KGD, Falkbeer counter-gambit2544.0%54.0%
C31KGD, Falkbeer, 3...e4683.3%58.3%
C31KGD, Falkbeer, 4.d3862.5%68.8%
C32KGD, Falkbeer, 5.de837.5%43.8%
C32KGD, Falkbeer, Charousek gambit2100.0%50.0%
C32KGD, Falkbeer, Keres variation10.0%100.0%
C31KGD, Falkbeer, Milner-Barry variation20.0%50.0%
C31KGD, Falkbeer, Nimzovich variation560.0%70.0%
C32KGD, Falkbeer, Reti variation450.0%50.0%
C31KGD, Falkbeer, Rubinstein variation520.0%70.0%
C31KGD, Falkbeer, Tartakower variation475.0%62.5%
C32KGD, Falkbeer, main line, 7...Bf5616.7%91.7%
C30KGD, Keene's defence560.0%70.0%
C30KGD, Mafia defence837.5%68.8%
C31KGD, Nimzovich counter-gambit1553.3%73.3%
C30KGD, Norwalde variation147.1%82.1%
C30KGD, classical counter-gambit10.0%0.0%
C30KGD, classical variation4427.3%59.1%
C30KGD, classical, 4.c32931.0%60.3%
C30KGD, classical, Marshall attack3100.0%50.0%
C30KGD, classical, Reti variation1100.0%50.0%
C30KGD, classical, Svenonius variation1100.0%50.0%
B00KP, Colorado counter20.0%50.0%
C20KP, Indian opening5633.9%43.8%
C20KP, King's head opening250.0%25.0%
C20KP, Lopez opening1233.3%33.3%
C20KP, Mengarini's opening2040.0%25.0%
C20KP, Napoleon's opening633.3%50.0%
B00KP, Nimzovich defence41533.3%61.2%
B00KP, Nimzovich defence, Bogolyubov variation8830.7%58.5%
C20KP, Patzer opening2227.3%31.8%
A50Kevitz-Trajkovich defence29338.2%58.0%
E60King's Indian defence54834.9%57.0%
E61King's Indian defence, 3.Nc370937.7%55.6%
E72King's Indian with e4 & g35435.2%56.5%
E60King's Indian, 3.Nf3252339.3%57.9%
E60King's Indian, 3.g3138341.9%56.3%
E60King's Indian, 3.g3, counterthrust variation911.1%27.8%
E70King's Indian, 4.e483533.3%58.7%
E73King's Indian, 5.Be23141.9%59.7%
E90King's Indian, 5.Nf377433.3%56.8%
E91King's Indian, 6.Be255632.9%64.3%
E92King's Indian, Andersson variation25453.5%50.4%
E60King's Indian, Anti-Gruenfeld4434.1%60.2%
E73King's Indian, Averbakh system85332.5%54.7%
E74King's Indian, Averbakh, 6...c523334.8%56.0%
E75King's Indian, Averbakh, main line4626.1%58.7%
A48King's Indian, East Indian defence74438.7%51.3%
E76King's Indian, Four pawns attack21036.7%60.7%
E77King's Indian, Four pawns attack10332.0%57.8%
E77King's Indian, Four pawns attack, 6.Be21450.0%53.6%
E77King's Indian, Four pawns attack, Florentine gambit2100.0%50.0%
E76King's Indian, Four pawns attack, dynamic line14635.6%53.4%
E79King's Indian, Four pawns attack, main line60.0%66.7%
E78King's Indian, Four pawns attack, with Be2 and Nf3540.0%60.0%
E92King's Indian, Gligoric-Taimanov system138733.5%58.5%
E91King's Indian, Kazakh variation28836.8%55.6%
E70King's Indian, Kramer system31429.6%57.8%
E90King's Indian, Larsen variation7940.5%60.8%
A48King's Indian, London system94839.2%53.4%
E71King's Indian, Makagonov system (5.h3)63734.2%59.5%
E92King's Indian, Petrosian system8129.6%50.6%
E92King's Indian, Petrosian system, Stein variation52332.7%53.3%
E93King's Indian, Petrosian system, main line7634.2%50.0%
E72King's Indian, Pomar system812.5%56.3%
E80King's Indian, Saemisch variation29633.8%57.8%
E81King's Indian, Saemisch, 5...O-O191434.0%54.9%
E83King's Indian, Saemisch, 6...Nc65427.8%47.2%
E81King's Indian, Saemisch, Byrne variation7740.3%53.9%
E83King's Indian, Saemisch, Panno formation17542.3%56.6%
E84King's Indian, Saemisch, Panno main line38037.4%52.6%
E83King's Indian, Saemisch, Ruban variation1136.4%45.5%
E82King's Indian, Saemisch, double fianchetto variation8931.5%58.4%
E89King's Indian, Saemisch, orthodox main line2832.1%62.5%
E85King's Indian, Saemisch, orthodox variation5034.0%51.0%
E86King's Indian, Saemisch, orthodox, 7.Nge2 c632828.4%53.5%
E87King's Indian, Saemisch, orthodox, 7.d524327.6%59.5%
E88King's Indian, Saemisch, orthodox, 7.d5 c629732.3%57.9%
E87King's Indian, Saemisch, orthodox, Bronstein variation1100.0%50.0%
E73King's Indian, Semi-Averbakh system2642.3%55.8%
E61King's Indian, Smyslov system7938.0%53.2%
A48King's Indian, Torre attack145038.9%49.4%
E90King's Indian, Zinnowitz variation3050.0%55.0%
E70King's Indian, accelerated Averbakh system10334.0%55.8%
E92King's Indian, classical variation2536.0%38.0%
E62King's Indian, fianchetto variation5836.2%49.1%
E62King's Indian, fianchetto with ...Nc621735.5%54.6%
E67King's Indian, fianchetto with ...Nd77537.3%53.3%
A49King's Indian, fianchetto without c497140.8%56.5%
E62King's Indian, fianchetto, Kavalek (Bronstein) variation53032.3%60.7%
E62King's Indian, fianchetto, Larsen system25742.4%62.1%
E63King's Indian, fianchetto, Panno variation205837.3%57.2%
E62King's Indian, fianchetto, Simagin variation8135.8%63.6%
E62King's Indian, fianchetto, Uhlmann (Szabo) variation24732.0%58.9%
E66King's Indian, fianchetto, Yugoslav Panno30133.9%56.8%
E64King's Indian, fianchetto, Yugoslav system8836.4%59.1%
E65King's Indian, fianchetto, Yugoslav, 7.O-O15950.3%52.2%
E69King's Indian, fianchetto, classical main line41733.8%61.3%
E67King's Indian, fianchetto, classical variation46439.9%55.3%
E68King's Indian, fianchetto, classical variation, 8.e4115638.4%60.3%
E62King's Indian, fianchetto, lesser Simagin (Spassky) variation25637.9%60.0%
E94King's Indian, orthodox variation95536.6%54.5%
E94King's Indian, orthodox, 7...Nbd786033.4%60.8%
E95King's Indian, orthodox, 7...Nbd7, 8.Re131235.3%55.8%
E96King's Indian, orthodox, 7...Nbd7, main line3941.0%59.0%
E97King's Indian, orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation)385732.9%56.2%
E98King's Indian, orthodox, Aronin-Taimanov, 9.Ne183926.8%61.1%
E99King's Indian, orthodox, Aronin-Taimanov, Benko attack5322.6%66.0%
E97King's Indian, orthodox, Aronin-Taimanov, bayonet attack121535.4%58.4%
E99King's Indian, orthodox, Aronin-Taimanov, main line1729.4%61.8%
E94King's Indian, orthodox, Donner variation15438.3%59.4%
C30King's gambit7338.4%58.9%
C33King's gambit accepted10.0%0.0%
C40King's knight opening20.0%50.0%
C34King's knight's gambit944.4%33.3%
C38King's knight's gambit2339.1%28.3%
C20King's pawn game2236.4%54.5%
C44King's pawn game7735.1%51.3%
C50King's pawn game21036.2%59.5%
B00King's pawn opening119936.9%57.4%
C44Konstantinopolsky opening666.7%66.7%
A00Lasker simul special333.3%50.0%
C40Latvian counter-gambit7631.6%61.8%
C40Latvian gambit, 3.Bc4580.0%40.0%
C40Latvian, Fraser defence1118.2%54.5%
C40Latvian, Polerio variation2227.3%40.9%
B00Lemming defence837.5%56.3%
C00Lengfellner system520.0%90.0%
D00Levitsky attack (Queen's bishop attack)171037.0%52.3%
A00Mieses opening11930.3%52.9%
A40Modern defence79537.2%58.0%
A41Modern defence6434.4%56.3%
A42Modern defence, Averbakh system35432.8%58.5%
A42Modern defence, Averbakh system, Kotov variation10324.3%64.6%
A42Modern defence, Averbakh system, Randspringer variation90.0%77.8%
A03Mujannah opening450.0%25.0%
D70Neo-Gruenfeld (Kemeri) defence3040.0%53.3%
D70Neo-Gruenfeld defence18037.8%56.7%
D73Neo-Gruenfeld, 5.Nf375851.3%55.3%
D71Neo-Gruenfeld, 5.cd27746.2%56.0%
D72Neo-Gruenfeld, 5.cd, main line16933.7%60.1%
D77Neo-Gruenfeld, 6.O-O64646.3%54.3%
D78Neo-Gruenfeld, 6.O-O c671742.0%54.6%
D79Neo-Gruenfeld, 6.O-O, main line44848.7%54.2%
D74Neo-Gruenfeld, 6.cd Nxd5, 7.O-O19944.7%56.0%
D76Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb649744.3%57.1%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc37745.5%60.4%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.dc1526.7%73.3%
E00Neo-Indian (Seirawan) attack15931.4%52.8%
E20Nimzo-Indian defence10150.5%51.0%
E40Nimzo-Indian, 4.e312227.9%57.4%
E46Nimzo-Indian, 4.e3 O-O5930.5%57.6%
E47Nimzo-Indian, 4.e3 O-O, 5.Bd348647.1%51.7%
E48Nimzo-Indian, 4.e3 O-O, 5.Bd3 d540841.2%48.8%
E41Nimzo-Indian, 4.e3 c564643.8%54.4%
E42Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein)53344.1%53.9%
E51Nimzo-Indian, 4.e3 e8g8, 5.Nf3 d7d512349.6%47.6%
E50Nimzo-Indian, 4.e3 e8g8, 5.Nf3, without ...d515738.9%50.6%
E49Nimzo-Indian, 4.e3, Botvinnik system17446.0%56.3%
E45Nimzo-Indian, 4.e3, Bronstein (Byrne) variation15851.9%57.6%
E53Nimzo-Indian, 4.e3, Gligoric system with 7...Nbd74161.0%50.0%
E54Nimzo-Indian, 4.e3, Gligoric system with 7...dc116448.6%55.8%
E55Nimzo-Indian, 4.e3, Gligoric system, Bronstein variation176947.7%55.3%
E54Nimzo-Indian, 4.e3, Gligoric system, Smyslov variation1968.4%65.8%
E53Nimzo-Indian, 4.e3, Keres variation8737.9%45.4%
E51Nimzo-Indian, 4.e3, Ragozin variation2138.1%66.7%
E40Nimzo-Indian, 4.e3, Taimanov variation6334.9%63.5%
E59Nimzo-Indian, 4.e3, main line72443.6%53.2%
E52Nimzo-Indian, 4.e3, main line with ...b642639.2%53.2%
E53Nimzo-Indian, 4.e3, main line with ...c534839.9%54.7%
E56Nimzo-Indian, 4.e3, main line with 7...Nc630552.8%55.9%
E58Nimzo-Indian, 4.e3, main line with 8...Bxc3139544.7%53.0%
E57Nimzo-Indian, 4.e3, main line with 8...dc and 9...cd333.3%16.7%
E43Nimzo-Indian, Fischer variation54836.7%53.7%
E44Nimzo-Indian, Fischer variation, 5.Ne230935.9%55.2%
E20Nimzo-Indian, Kmoch variation64638.5%53.5%
E30Nimzo-Indian, Leningrad variation54135.1%48.2%
E30Nimzo-Indian, Leningrad, ...b5 gambit5328.3%46.2%
E31Nimzo-Indian, Leningrad, main line18431.0%51.4%
E20Nimzo-Indian, Mikenas attack666.7%50.0%
E46Nimzo-Indian, Reshevsky variation83644.3%51.2%
E20Nimzo-Indian, Romanishin-Kasparov (Steiner) system37346.1%53.4%
E24Nimzo-Indian, Saemisch variation15548.4%48.1%
E25Nimzo-Indian, Saemisch variation11341.6%51.8%
E26Nimzo-Indian, Saemisch variation5446.3%54.6%
E27Nimzo-Indian, Saemisch variation4546.7%41.1%
E28Nimzo-Indian, Saemisch variation9125.3%52.2%
E24Nimzo-Indian, Saemisch, Botvinnik variation4436.4%43.2%
E29Nimzo-Indian, Saemisch, Capablanca variation2437.5%43.8%
E25Nimzo-Indian, Saemisch, Keres variation26946.1%53.2%
E26Nimzo-Indian, Saemisch, O'Kelly variation2128.6%57.1%
E25Nimzo-Indian, Saemisch, Romanovsky variation7642.1%48.7%
E29Nimzo-Indian, Saemisch, main line7339.7%55.5%
E46Nimzo-Indian, Simagin variation11139.6%49.5%
E22Nimzo-Indian, Spielmann variation10043.0%50.5%
E23Nimzo-Indian, Spielmann, 4...c5, 5.dc Nc63839.5%51.3%
E23Nimzo-Indian, Spielmann, Karlsbad variation1540.0%40.0%
E23Nimzo-Indian, Spielmann, San Remo variation650.0%75.0%
E23Nimzo-Indian, Spielmann, Staahlberg variation10.0%100.0%
E32Nimzo-Indian, classical variation588142.2%53.6%
E33Nimzo-Indian, classical, 4...Nc66451.6%55.5%
E38Nimzo-Indian, classical, 4...c554037.8%60.4%
E32Nimzo-Indian, classical, Adorjan gambit9744.3%51.0%
E36Nimzo-Indian, classical, Botvinnik variation1030.0%65.0%
E33Nimzo-Indian, classical, Milner-Barry (Zurich) variation26038.8%58.3%
E34Nimzo-Indian, classical, Noa variation71752.6%54.3%
E36Nimzo-Indian, classical, Noa variation, 5.a325445.7%52.4%
E35Nimzo-Indian, classical, Noa variation, 5.cd ed49444.3%50.5%
E37Nimzo-Indian, classical, Noa variation, main line, 7.Qc227247.1%62.5%
E39Nimzo-Indian, classical, Pirc variation87638.4%55.0%
E37Nimzo-Indian, classical, San Remo variation30.0%66.7%
E41Nimzo-Indian, e3, Huebner variation45733.5%50.7%
E21Nimzo-Indian, three knights variation213541.3%53.9%
E21Nimzo-Indian, three knights, Korchnoi variation40.0%50.0%
A01Nimzovich-Larsen attack57736.7%52.9%
A01Nimzovich-Larsen attack, Dutch variation1330.8%46.2%
A01Nimzovich-Larsen attack, English variation15536.1%50.3%
A01Nimzovich-Larsen attack, Indian variation23931.8%50.2%
A01Nimzovich-Larsen attack, classical variation92936.2%49.9%
A01Nimzovich-Larsen attack, modern variation274640.2%50.5%
A01Nimzovich-Larsen attack, symmetrical variation59740.4%49.2%
A00Novosibirsk opening2133.3%50.0%
A43Old Benoni defence128835.3%59.2%
A44Old Benoni defence1643.8%65.6%
A43Old Benoni, Franco-Benoni defence9036.7%58.3%
A43Old Benoni, Mujannah formation3138.7%67.7%
A43Old Benoni, Schmid's system2317.4%56.5%
A41Old Indian defence62731.6%54.4%
A53Old Indian defence85639.0%56.0%
A54Old Indian, Dus-Khotimirsky variation728.6%42.9%
A53Old Indian, Janowski variation10831.5%56.5%
A41Old Indian, Tartakower (Wade) variation81934.7%61.3%
A54Old Indian, Ukrainian variation8251.2%56.1%
A54Old Indian, Ukrainian variation, 4.Nf318336.6%57.7%
A55Old Indian, main line39638.1%58.2%
B00Owen defence26933.1%61.5%
A45Paleface attack3234.4%45.3%
C42Petrov three knights game22837.3%57.7%
C42Petrov's defence24044.6%51.5%
C42Petrov, Cochrane gambit6118.0%32.0%
C42Petrov, Cozio (Lasker) attack48848.8%52.7%
C42Petrov, Damiano variation2441.7%50.0%
C42Petrov, French attack333.3%83.3%
C42Petrov, Italian variation6327.0%50.0%
C42Petrov, Kaufmann attack17848.9%48.6%
C42Petrov, Nimzovich attack106045.6%55.0%
C42Petrov, Paulsen attack13939.6%51.4%
C43Petrov, Urusov gambit633.3%83.3%
C42Petrov, classical attack70047.4%56.6%
C42Petrov, classical attack, Berger variation1275.0%54.2%
C42Petrov, classical attack, Chigorin variation54941.0%57.1%
C42Petrov, classical attack, Jaenisch variation161246.0%58.3%
C42Petrov, classical attack, Krause variation757.1%28.6%
C42Petrov, classical attack, Marshall variation91643.1%57.0%
C42Petrov, classical attack, Mason variation11343.4%58.8%
C42Petrov, classical attack, Tarrasch variation250.0%75.0%
C42Petrov, classical attack, close variation13146.6%59.2%
C43Petrov, modern (Steinitz) attack3148.4%56.5%
C43Petrov, modern attack, Bardeleben variation425.0%62.5%
C43Petrov, modern attack, Steinitz variation1100.0%50.0%
C43Petrov, modern attack, Symmetrical variation220745.1%53.3%
C43Petrov, modern attack, Trifunovic variation5345.3%49.1%
C43Petrov, modern attack, main line19446.4%58.2%
C41Philidor's defence20836.5%59.6%
C41Philidor, Hanham variation2540.0%68.0%
C41Philidor, Hanham, Delmar variation2100.0%50.0%
C41Philidor, Hanham, Krause variation1258.3%37.5%
C41Philidor, Hanham, Schlechter variation1723.5%76.5%
C41Philidor, Hanham, Steiner variation2035.0%67.5%
C41Philidor, Improved Hanham variation89139.5%56.2%
C41Philidor, Larsen variation3023.3%65.0%
C41Philidor, Lopez counter-gambit20.0%50.0%
C41Philidor, Nimzovich (Jaenisch) variation1540.0%53.3%
C41Philidor, Nimzovich variation3441.2%61.8%
C41Philidor, Nimzovich, Klein variation580.0%60.0%
C41Philidor, Nimzovich, Larobok variation4447.7%35.2%
C41Philidor, Nimzovich, Rellstab variation2846.4%69.6%
C41Philidor, Nimzovich, Sokolsky variation666.7%66.7%
C41Philidor, Nimzovich, Sozin variation742.9%50.0%
C41Philidor, Paulsen attack250.0%25.0%
C41Philidor, Philidor counter-gambit837.5%56.3%
C41Philidor, Philidor counter-gambit, Zukertort variation650.0%75.0%
C41Philidor, Philidor counter-gambit, del Rio attack30.0%66.7%
C41Philidor, Steinitz variation20.0%0.0%
C41Philidor, exchange variation66736.7%58.4%
B07Pirc defence146137.7%56.7%
B07Pirc, 150 attack22237.4%61.0%
B09Pirc, Austrian attack16740.7%59.9%
B09Pirc, Austrian attack, 6.Bd3107639.7%59.9%
B09Pirc, Austrian attack, 6.Be326532.1%58.3%
B09Pirc, Austrian attack, 6.e58543.5%57.1%
B09Pirc, Austrian attack, Ljubojevic variation1442.9%50.0%
B09Pirc, Austrian attack, dragon formation74438.8%58.5%
B07Pirc, Byrne variation31732.5%57.3%
B07Pirc, Chinese variation250.0%25.0%
B07Pirc, Holmov system1844.4%61.1%
B07Pirc, Sveshnikov system28434.5%52.8%
B07Pirc, Ufimtsev-Pytel variation32538.8%59.7%
B07Pirc, bayonet (Mariotti) attack2755.6%57.4%
B08Pirc, classical (two knights) system46737.0%57.7%
B08Pirc, classical system, 5.Be2212738.6%56.9%
B08Pirc, classical, h3 system37238.4%59.3%
A00Polish (Sokolsky) opening157738.5%48.5%
A40Polish defence5046.0%51.0%
A00Polish, Outflank variation10444.2%48.1%
C44Ponziani counter-gambit10542.9%57.6%
C44Ponziani counter-gambit, Cordel variation10.0%0.0%
C44Ponziani opening29335.8%44.5%
C44Ponziani, Caro variation21042.9%49.5%
C44Ponziani, Fraser defence4837.5%66.7%
C44Ponziani, Jaenisch counter-attack200046.2%53.0%
C44Ponziani, Leonhardt variation8736.8%46.0%
C44Ponziani, Reti variation1233.3%58.3%
C44Ponziani, Romanishin variation1631.3%46.9%
C44Ponziani, Steinitz variation43741.4%45.7%
A42Pterodactyl defence32036.9%63.8%
D21QGA, 3.Nf322138.9%57.5%
D20QGA, 3.e4260340.0%56.9%
D26QGA, 4...e624345.7%54.5%
D24QGA, 4.Nc318841.0%50.8%
D25QGA, 4.e38736.8%54.0%
D22QGA, Alekhine defence20040.0%56.5%
D22QGA, Alekhine defence, Alatortsev variation1250.0%41.7%
D21QGA, Alekhine defense, Borisenko-Furman variation2128.6%52.4%
D24QGA, Bogolyubov variation14949.0%56.7%
D21QGA, Ericson variation40.0%25.0%
D25QGA, Flohr variation6330.2%65.9%
D22QGA, Haberditz variation9857.1%52.0%
D25QGA, Janowsky-Larsen variation33139.0%57.9%
D20QGA, Linares variation8035.0%61.3%
D23QGA, Mannheim variation28345.9%52.7%
D25QGA, Smyslov variation8752.9%58.6%
D26QGA, classical variation61951.5%52.6%
D26QGA, classical variation, 6.O-O14146.1%57.1%
D27QGA, classical, 6...a6368050.4%55.1%
D28QGA, classical, 7...b519351.8%56.5%
D28QGA, classical, 7.Qe26251.6%61.3%
D29QGA, classical, 8...Bb730041.0%47.8%
D26QGA, classical, Furman variation10.0%0.0%
D27QGA, classical, Geller variation7255.6%52.8%
D27QGA, classical, Rubinstein variation141147.6%55.6%
D29QGA, classical, Smyslov variation4055.0%45.0%
D26QGA, classical, Steinitz variation3246.9%64.1%
D30QGD72947.9%51.9%
D51QGD1145.5%68.2%
D52QGD12540.0%58.4%
D30QGD Slav27045.9%54.8%
D15QGD Slav accepted7642.1%48.7%
D16QGD Slav accepted, Alapin variation15738.9%66.6%
D10QGD Slav defence353741.0%53.9%
D10QGD Slav defence, Alekhine variation23341.2%54.9%
D10QGD Slav defence, exchange variation137544.6%55.3%
D11QGD Slav, 3.Nf3200540.1%55.9%
D15QGD Slav, 4.Nc3349439.8%54.8%
D11QGD Slav, 4.e3366842.3%55.4%
D12QGD Slav, 4.e3 Bf5281440.0%54.2%
D15QGD Slav, 5.e3 (Alekhine variation)14829.7%54.7%
D12QGD Slav, Amsterdam variation2152.4%45.2%
D11QGD Slav, Breyer variation10741.1%58.9%
D17QGD Slav, Carlsbad variation46737.5%60.3%
D17QGD Slav, Czech defence34248.0%54.4%
D18QGD Slav, Dutch variation24939.8%59.2%
D19QGD Slav, Dutch variation126038.7%57.5%
D19QGD Slav, Dutch variation, main line18640.9%57.5%
D18QGD Slav, Dutch, Lasker variation425.0%87.5%
D19QGD Slav, Dutch, Saemisch variation250.0%25.0%
D17QGD Slav, Krause attack65039.2%58.2%
D15QGD Slav, Schlechter variation27142.8%59.0%
D30QGD Slav, Semmering variation2231.8%47.7%
D15QGD Slav, Slav gambit1625.0%56.3%
D16QGD Slav, Smyslov variation6432.8%58.6%
D16QGD Slav, Soultanbeieff variation37949.3%53.4%
D16QGD Slav, Steiner variation20537.1%63.9%
D15QGD Slav, Suechting variation12832.8%57.8%
D15QGD Slav, Tolush-Geller gambit11828.8%40.7%
D17QGD Slav, Wiesbaden variation59642.3%57.4%
D10QGD Slav, Winawer counter-gambit13031.5%53.5%
D12QGD Slav, exchange variation8737.9%48.9%
D13QGD Slav, exchange variation66245.8%55.7%
D14QGD Slav, exchange variation, 6.Bf4 Bf565049.4%51.5%
D14QGD Slav, exchange, Trifunovic variation20449.5%52.7%
D43QGD semi-Slav627541.4%52.8%
D45QGD semi-Slav, 5...Nd751338.4%54.1%
D44QGD semi-Slav, 5.Bg5 dc14243.7%49.3%
D45QGD semi-Slav, 5.e339240.6%56.8%
D46QGD semi-Slav, 6.Bd33540.0%62.9%
D47QGD semi-Slav, 7.Bc45536.4%52.7%
D46QGD semi-Slav, Bogolyubov variation15843.0%57.0%
D44QGD semi-Slav, Botvinnik system (anti-Meran)7038.6%53.6%
D46QGD semi-Slav, Chigorin defence41644.5%54.0%
D44QGD semi-Slav, Ekstrom variation2646.2%38.5%
D43QGD semi-Slav, Hastings variation520.0%90.0%
D48QGD semi-Slav, Meran205.0%37.5%
D47QGD semi-Slav, Meran variation121449.8%54.9%
D48QGD semi-Slav, Meran, 8...a6136149.7%48.8%
D49QGD semi-Slav, Meran, Blumenfeld variation15945.3%50.9%
D48QGD semi-Slav, Meran, Pirc variation955.6%72.2%
D49QGD semi-Slav, Meran, Rabinovich variation6025.0%44.2%
D49QGD semi-Slav, Meran, Rellstab attack1637.5%62.5%
D48QGD semi-Slav, Meran, Reynolds' variation73340.2%56.3%
D49QGD semi-Slav, Meran, Sozin variation15344.4%45.8%
D49QGD semi-Slav, Meran, Stahlberg variation8041.3%45.6%
D47QGD semi-Slav, Meran, Wade variation679239.4%53.5%
D48QGD semi-Slav, Meran, old main line11135.1%52.7%
D46QGD semi-Slav, Romih variation16737.1%64.1%
D45QGD semi-Slav, Rubinstein (anti-Meran) system1533.3%43.3%
D45QGD semi-Slav, Stoltz variation1123043.5%53.4%
D45QGD semi-Slav, accelerated Meran (Alekhine variation)179744.0%54.0%
D44QGD semi-Slav, anti-Meran gambit75035.2%58.3%
D44QGD semi-Slav, anti-Meran, Alatortsev system1100.0%50.0%
D44QGD semi-Slav, anti-Meran, Lilienthal variation15930.8%66.4%
D44QGD semi-Slav, anti-Meran, Szabo variation2420.8%35.4%
D47QGD semi-Slav, neo-Meran (Lundin variation)27648.2%54.5%
D45QGD semi-Slav, stonewall defence1154.5%54.5%
D35QGD, 3...Nf67941.8%50.0%
D31QGD, 3.Nc370641.9%55.2%
D50QGD, 4.Bg56743.3%53.0%
D53QGD, 4.Bg5 Be791145.3%54.3%
D53QGD, 4.Bg5 Be7, 5.e3 O-O3348.5%51.5%
D51QGD, 4.Bg5 Nbd76540.0%53.8%
D37QGD, 4.Nf3502746.5%52.7%
D51QGD, 5...c66349.2%53.2%
D55QGD, 6.Nf311833.9%57.6%
D31QGD, Alapin variation742.9%64.3%
D08QGD, Albin counter-gambit8341.0%63.9%
D09QGD, Albin counter-gambit, 5.g37841.0%61.5%
D08QGD, Albin counter-gambit, Alapin variation757.1%57.1%
D08QGD, Albin counter-gambit, Balogh variation425.0%87.5%
D08QGD, Albin counter-gambit, Janowski variation425.0%62.5%
D08QGD, Albin counter-gambit, Lasker trap10.0%100.0%
D51QGD, Alekhine variation40.0%50.0%
D54QGD, Anti-neo-orthodox variation3441.2%47.1%
D50QGD, Been-Koomen variation540.0%20.0%
D52QGD, Cambridge Springs defence3641.7%45.8%
D52QGD, Cambridge Springs defence, 7.cd3633.3%50.0%
D52QGD, Cambridge Springs defence, Argentine variation1931.6%42.1%
D52QGD, Cambridge Springs defence, Bogoljubow variation38946.8%56.0%
D52QGD, Cambridge Springs defence, Capablanca variation3636.1%59.7%
D52QGD, Cambridge Springs defence, Rubinstein variation15339.9%55.2%
D52QGD, Cambridge Springs defence, Yugoslav variation35439.0%57.3%
D50QGD, Canal (Venice) variation20.0%50.0%
D51QGD, Capablanca anti-Cambridge Springs variation1070.0%65.0%
D30QGD, Capablanca variation3333.3%56.1%
D30QGD, Capablanca-Duras variation31245.2%54.3%
D31QGD, Charousek (Petrosian) variation131245.5%52.8%
D07QGD, Chigorin defence66235.3%57.3%
D07QGD, Chigorin defence, Janowski variation7932.9%63.3%
D06QGD, Grau (Sahovic) defence9534.7%62.6%
D35QGD, Harrwitz attack18851.1%55.3%
D30QGD, Hastings variation48547.0%52.8%
D31QGD, Janowski variation10945.0%50.0%
D56QGD, Lasker defence29845.3%53.5%
D57QGD, Lasker defence, Bernstein variation1070.0%45.0%
D56QGD, Lasker defence, Teichmann variation9051.1%50.0%
D57QGD, Lasker defence, main line4555.6%52.2%
D53QGD, Lasker variation425.0%87.5%
D51QGD, Manhattan variation837.5%68.8%
D06QGD, Marshall defence11242.9%58.9%
D55QGD, Neo-orthodox variation633.3%50.0%
D55QGD, Neo-orthodox variation, 7.Bh412744.9%57.1%
D55QGD, Neo-orthodox variation, 7.Bxf631145.7%51.8%
D60QGD, Orthodox defence8932.6%55.6%
D63QGD, Orthodox defence7644.7%57.9%
D62QGD, Orthodox defence, 7.Qc2 c5, 8.cd (Rubinstein)13150.4%55.7%
D63QGD, Orthodox defence, 7.Rc120935.9%57.7%
D66QGD, Orthodox defence, Bd3 line22245.9%59.5%
D67QGD, Orthodox defence, Bd3 line1957.9%44.7%
D67QGD, Orthodox defence, Bd3 line, 11.O-O4736.2%64.9%
D67QGD, Orthodox defence, Bd3 line, Alekhine variation3557.1%54.3%
D66QGD, Orthodox defence, Bd3 line, fianchetto variation742.9%78.6%
D60QGD, Orthodox defence, Botvinnik variation6532.3%50.0%
D63QGD, Orthodox defence, Capablanca variation1100.0%50.0%
D63QGD, Orthodox defence, Pillsbury attack1533.3%70.0%
D60QGD, Orthodox defence, Rauzer variation3240.6%60.9%
D64QGD, Orthodox defence, Rubinstein attack (with Rc1)9545.3%56.3%
D64QGD, Orthodox defence, Rubinstein attack, Gruenfeld variation1421.4%46.4%
D64QGD, Orthodox defence, Rubinstein attack, Karlsbad variation1844.4%33.3%
D64QGD, Orthodox defence, Rubinstein attack, Wolf variation1346.2%46.2%
D65QGD, Orthodox defence, Rubinstein attack, main line1154.5%72.7%
D61QGD, Orthodox defence, Rubinstein variation21144.5%51.2%
D63QGD, Orthodox defence, Swiss (Henneberger) variation8644.2%62.8%
D63QGD, Orthodox defence, Swiss, Karlsbad variation15341.8%52.9%
D68QGD, Orthodox defence, classical variation6746.3%57.5%
D68QGD, Orthodox defence, classical, 13.d1b1 (Maroczy)366.7%33.3%
D68QGD, Orthodox defence, classical, 13.d1c2 (Vidmar)4456.8%58.0%
D69QGD, Orthodox defence, classical, 13.de1553.3%53.3%
D55QGD, Petrosian variation35352.1%53.5%
D38QGD, Ragozin variation356446.2%52.4%
D39QGD, Ragozin, Vienna variation151250.9%51.1%
D50QGD, Semi-Tarrasch1030.0%45.0%
D40QGD, Semi-Tarrasch defence41542.2%54.8%
D40QGD, Semi-Tarrasch defence, Pillsbury variation2437.5%56.3%
D41QGD, Semi-Tarrasch with e312846.9%52.3%
D41QGD, Semi-Tarrasch, 5.cd58247.6%58.0%
D42QGD, Semi-Tarrasch, 7.Bd324642.7%56.7%
D41QGD, Semi-Tarrasch, Kmoch variation875.0%50.0%
D50QGD, Semi-Tarrasch, Krause variation1100.0%50.0%
D50QGD, Semi-Tarrasch, Primitive Pillsbury variation1241.7%54.2%
D41QGD, Semi-Tarrasch, San Sebastian variation2437.5%77.1%
D40QGD, Semi-Tarrasch, symmetrical variation850.0%62.5%
D32QGD, Tarrasch defence28546.7%54.2%
D32QGD, Tarrasch defence, 4.cd ed1735.3%58.8%
D32QGD, Tarrasch defence, Marshall gambit633.3%50.0%
D32QGD, Tarrasch defence, Tarrasch gambit540.0%20.0%
D33QGD, Tarrasch, Folkestone (Swedish) variation4254.8%58.3%
D33QGD, Tarrasch, Prague variation6131.1%53.3%
D34QGD, Tarrasch, Prague variation, 7...Be716943.2%55.9%
D34QGD, Tarrasch, Prague variation, 9.Bg553247.4%57.5%
D34QGD, Tarrasch, Prague variation, Normal position63447.5%56.2%
D34QGD, Tarrasch, Reti variation2661.5%61.5%
D33QGD, Tarrasch, Schlechter-Rubinstein system1338.5%50.0%
D33QGD, Tarrasch, Wagner variation922.2%66.7%
D32QGD, Tarrasch, von Hennig-Schara gambit5541.8%60.9%
D58QGD, Tartakower (Makagonov-Bondarevsky) system486746.3%52.0%
D59QGD, Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd518048.3%46.9%
D59QGD, Tartakower variation11044.5%45.9%
D30QGD, Vienna variation55354.1%52.5%
D37QGD, classical variation (5.Bf4)385844.9%55.2%
D35QGD, exchange variation35242.6%56.5%
D35QGD, exchange, Saemisch variation26847.0%54.5%
D35QGD, exchange, positional line89140.7%54.0%
D35QGD, exchange, positional line, 5...c671541.5%54.8%
D36QGD, exchange, positional line, 6.Qc221942.0%53.9%
D31QGD, semi-Slav85638.9%55.1%
D31QGD, semi-Slav, Abrahams variation12535.2%44.0%
D31QGD, semi-Slav, Junge variation1030.0%35.0%
D31QGD, semi-Slav, Koomen variation955.6%38.9%
D31QGD, semi-Slav, Marshall gambit65643.1%53.0%
D31QGD, semi-Slav, Noteboom variation22939.3%52.4%
D06QGD, symmetrical (Austrian) defence3450.0%57.4%
C40QP counter-gambit (elephant gambit)1353.8%65.4%
C40QP counter-gambit, Maroczy gambit366.7%66.7%
A50Queen's Indian accelerated14146.1%57.1%
A47Queen's Indian defence44038.6%52.3%
E12Queen's Indian defence62041.8%53.8%
E12Queen's Indian, 4.Nc3432139.9%53.2%
E12Queen's Indian, 4.Nc3, Botvinnik variation3520.0%47.1%
E13Queen's Indian, 4.Nc3, main line20835.6%52.4%
E14Queen's Indian, 4.e3160039.8%53.5%
E15Queen's Indian, 4.g3194446.6%55.9%
E15Queen's Indian, 4.g3 Bb722539.6%53.6%
E17Queen's Indian, 5.Bg2 Be72828.6%39.3%
E14Queen's Indian, Averbakh variation20.0%50.0%
E15Queen's Indian, Buerger variation2437.5%60.4%
E16Queen's Indian, Capablanca variation31740.7%56.3%
E17Queen's Indian, Euwe variation5952.5%55.1%
A47Queen's Indian, Marienbad system6735.8%53.7%
A47Queen's Indian, Marienbad system, Berg variation1250.0%58.3%
E12Queen's Indian, Miles variation127044.2%52.6%
E15Queen's Indian, Nimzovich variation (exaggerated fianchetto)1350540.3%56.4%
E17Queen's Indian, Opovcensky variation61438.3%54.2%
E12Queen's Indian, Petrosian system608642.8%54.2%
E16Queen's Indian, Riumin variation19840.4%56.1%
E15Queen's Indian, Rubinstein variation11235.7%58.0%
E16Queen's Indian, Yates variation30936.6%58.7%
E17Queen's Indian, anti-Queen's Indian system26739.0%53.2%
E17Queen's Indian, old main line, 6.O-O76341.8%58.5%
E18Queen's Indian, old main line, 7.Nc3150643.6%56.6%
E19Queen's Indian, old main line, 9.Qxc3128745.5%58.7%
A41Queen's Pawn183035.7%54.2%
D02Queen's bishop game111439.7%53.0%
D20Queen's gambit accepted84745.9%55.7%
D23Queen's gambit accepted3339.4%50.0%
D30Queen's gambit declined549645.3%55.7%
A40Queen's pawn193837.0%55.3%
A45Queen's pawn game179239.2%53.9%
A46Queen's pawn game262540.5%54.9%
A50Queen's pawn game53337.5%55.3%
D00Queen's pawn game44639.0%48.9%
D02Queen's pawn game455341.1%52.7%
D04Queen's pawn game65541.5%50.2%
D05Queen's pawn game50936.7%52.2%
E00Queen's pawn game37642.0%56.4%
E10Queen's pawn game379145.4%55.6%
D02Queen's pawn game, Chigorin variation37140.7%58.4%
D02Queen's pawn game, Krause variation34044.7%54.4%
D05Queen's pawn game, Rubinstein (Colle-Zukertort) variation22239.2%53.4%
D05Queen's pawn game, Zukertort variation1861.1%52.8%
D00Queen's pawn, Anti-Veresov366.7%33.3%
A45Queen's pawn, Bronstein gambit1030.0%55.0%
A40Queen's pawn, Charlick (Englund) gambit2045.0%62.5%
D00Queen's pawn, Chigorin variation29334.5%52.0%
A40Queen's pawn, English defence16141.0%63.4%
A40Queen's pawn, Franco-Indian (Keres) defence85237.9%55.8%
A40Queen's pawn, Keres defence152744.0%56.6%
A40Queen's pawn, Lundin (Kevitz-Mikenas) defence14930.9%59.1%
D00Queen's pawn, Mason variation73940.6%50.9%
D00Queen's pawn, Mason variation, Steinitz counter-gambit35937.6%49.2%
E60Queen's pawn, Mengarini attack3531.4%61.4%
A46Queen's pawn, Torre attack117936.5%51.7%
A46Queen's pawn, Torre attack, Wagner gambit333.3%83.3%
A46Queen's pawn, Yusupov-Rubinstein system68240.8%52.3%
D00Queen's pawn, stonewall attack5736.8%43.0%
A09Reti accepted22340.4%52.5%
A09Reti accepted, Keres variation4032.5%68.8%
A04Reti opening693638.0%54.3%
A05Reti opening300737.2%53.5%
A06Reti opening56437.2%53.4%
A09Reti opening50040.4%53.0%
A04Reti v Dutch91334.6%58.8%
A04Reti, Herrstroem gambit20.0%100.0%
A05Reti, King's Indian attack109540.5%53.4%
A07Reti, King's Indian attack211242.4%53.2%
A08Reti, King's Indian attack50341.9%52.2%
A07Reti, King's Indian attack (Barcza system)399341.4%53.7%
A07Reti, King's Indian attack (with ...c5)16341.1%50.0%
A08Reti, King's Indian attack, French variation25137.8%48.0%
A07Reti, King's Indian attack, Keres variation64134.8%54.4%
A07Reti, King's Indian attack, Pachman system10737.4%53.3%
A05Reti, King's Indian attack, Reti-Smyslov variation5139.2%56.9%
A05Reti, King's Indian attack, Spassky's variation27741.9%52.3%
A07Reti, King's Indian attack, Yugoslav variation158740.3%52.8%
A04Reti, Lisitsin gambit deferred1816.7%75.0%
A06Reti, Nimzovich-Larsen attack282341.1%49.7%
A04Reti, Pirc-Lisitsin gambit12129.8%49.6%
A04Reti, Wade defence20.0%50.0%
A09Reti, advance variation68740.3%49.3%
A06Reti, old Indian attack8924.7%48.3%
B00Reversed Grob (Borg/Basman defence/macho Grob)1631.3%84.4%
D01Richter-Veresov attack39836.7%46.0%
D01Richter-Veresov attack, Richter variation1723.5%52.9%
D01Richter-Veresov attack, Veresov variation2045.0%47.5%
B06Robatsch (modern) defence495136.3%56.6%
B06Robatsch defence57736.6%58.5%
B07Robatsch defence, Geller's system56537.2%57.0%
B06Robatsch defence, Gurgenidze variation4837.5%58.3%
B06Robatsch defence, Pseudo-Austrian attack44234.2%55.3%
A41Robatsch defence, Rossolimo variation11136.0%50.5%
B06Robatsch defence, Two knights variation30033.3%62.3%
B06Robatsch defence, Two knights, Suttles variation97538.3%58.4%
B06Robatsch defence, three pawns attack13531.1%63.7%
C50Rousseau gambit333.3%50.0%
C70Ruy Lopez3545.7%51.4%
C60Ruy Lopez (Spanish opening)2725.9%64.8%
C78Ruy Lopez, ...b5 & ...d64233.3%52.4%
C78Ruy Lopez, 5.O-O105646.3%54.5%
C70Ruy Lopez, Alapin's defence deferred1533.3%76.7%
C77Ruy Lopez, Anderssen variation71141.4%51.2%
C78Ruy Lopez, Archangelsk (counterthrust) variation147942.2%55.0%
C65Ruy Lopez, Berlin defence251339.4%50.9%
C65Ruy Lopez, Berlin defence, 4.O-O15341.2%59.2%
C66Ruy Lopez, Berlin defence, 4.O-O, d68550.6%54.7%
C65Ruy Lopez, Berlin defence, Anderssen variation1100.0%50.0%
C65Ruy Lopez, Berlin defence, Beverwijk variation46635.8%57.6%
C67Ruy Lopez, Berlin defence, Cordel variation5236.5%60.6%
C65Ruy Lopez, Berlin defence, Duras variation1338.5%50.0%
C65Ruy Lopez, Berlin defence, Kaufmann variation2642.3%55.8%
C67Ruy Lopez, Berlin defence, Minckwitz variation3748.6%62.2%
C65Ruy Lopez, Berlin defence, Mortimer variation1464.3%32.1%
C65Ruy Lopez, Berlin defence, Nyholm attack6355.6%54.8%
C67Ruy Lopez, Berlin defence, Pillsbury variation10.0%0.0%
C67Ruy Lopez, Berlin defence, Rosenthal variation2450.0%62.5%
C67Ruy Lopez, Berlin defence, Trifunovic variation520.0%90.0%
C67Ruy Lopez, Berlin defence, Winawer attack2832.1%69.6%
C67Ruy Lopez, Berlin defence, Zukertort variation1250.0%58.3%
C66Ruy Lopez, Berlin defence, hedgehog variation9952.5%57.6%
C67Ruy Lopez, Berlin defence, open variation338346.7%54.2%
C61Ruy Lopez, Bird's defence14737.4%59.5%
C61Ruy Lopez, Bird's defence, Paulsen variation333.3%50.0%
C70Ruy Lopez, Caro variation8341.0%59.0%
C70Ruy Lopez, Classical defence deferred8345.8%61.4%
C64Ruy Lopez, Cordel gambit5841.4%58.6%
C60Ruy Lopez, Cozio defence23242.7%50.2%
C70Ruy Lopez, Cozio defence deferred25845.0%53.1%
C60Ruy Lopez, Cozio defence, Paulsen variation3327.3%68.2%
C85Ruy Lopez, Exchange variation doubly deferred (DERLD)108739.2%48.6%
C70Ruy Lopez, Graz variation6100.0%50.0%
C60Ruy Lopez, Lucena defence20.0%50.0%
C89Ruy Lopez, Marshall counter-attack48553.6%54.6%
C89Ruy Lopez, Marshall counter-attack, 11...c616846.4%54.8%
C89Ruy Lopez, Marshall, Herman Steiner variation333.3%83.3%
C89Ruy Lopez, Marshall, Kevitz variation2100.0%50.0%
C89Ruy Lopez, Marshall, main line, 12.d2d420842.3%63.0%
C89Ruy Lopez, Marshall, main line, 14...Qh340951.3%51.3%
C78Ruy Lopez, Moeller defence54042.2%53.5%
C77Ruy Lopez, Morphy defence19239.1%56.5%
C77Ruy Lopez, Morphy defence, Duras variation4040.0%55.0%
C63Ruy Lopez, Schliemann defence26842.9%57.3%
C70Ruy Lopez, Schliemann defence deferred1926.3%71.1%
C63Ruy Lopez, Schliemann defence, Berger variation33740.9%57.3%
C74Ruy Lopez, Siesta, Kopayev variation10730.8%53.7%
C79Ruy Lopez, Steinitz defence deferred (Russian defence)21738.2%54.6%
C79Ruy Lopez, Steinitz defence deferred, Lipnitsky variation1172.7%54.5%
C79Ruy Lopez, Steinitz defence deferred, Rubinstein variation1241.7%54.2%
C70Ruy Lopez, Taimanov (chase/wing/accelerated counterthrust) variation12337.4%64.2%
C88Ruy Lopez, Trajkovic counter-attack62640.9%51.9%
C77Ruy Lopez, Treybal (Bayreuth) variation (exchange var. deferred)6041.7%45.8%
C78Ruy Lopez, Wing attack40.0%50.0%
C77Ruy Lopez, Wormald (Alapin) attack30141.9%53.8%
C77Ruy Lopez, Wormald attack, Gruenfeld variation2100.0%50.0%
C86Ruy Lopez, Worrall attack2454.2%56.3%
C86Ruy Lopez, Worrall attack, sharp line20438.7%54.7%
C86Ruy Lopez, Worrall attack, solid line6432.8%46.1%
C64Ruy Lopez, classical (Cordel) defence18942.3%52.4%
C64Ruy Lopez, classical defence, 4.c323240.9%55.8%
C64Ruy Lopez, classical defence, Benelux variation 37838.6%56.3%
C64Ruy Lopez, classical defence, Charousek variation333.3%83.3%
C64Ruy Lopez, classical defence, Zaitsev variation2100.0%50.0%
C88Ruy Lopez, closed120341.5%52.6%
C96Ruy Lopez, closed (10...c5)61433.2%64.0%
C96Ruy Lopez, closed (8...Na5)2254.5%63.6%
C90Ruy Lopez, closed (with ...d6)116936.5%51.5%
C66Ruy Lopez, closed Berlin defence, Bernstein variation1435.7%53.6%
C66Ruy Lopez, closed Berlin defence, Chigorin variation40.0%50.0%
C66Ruy Lopez, closed Berlin defence, Showalter variation5547.3%56.4%
C66Ruy Lopez, closed Berlin defence, Wolf variation5856.9%57.8%
C84Ruy Lopez, closed defence121340.5%51.5%
C88Ruy Lopez, closed, 7...O-O274040.4%52.4%
C88Ruy Lopez, closed, 7...d6, 8.d41833.3%16.7%
C88Ruy Lopez, closed, 8.c32737.0%63.0%
C91Ruy Lopez, closed, 9.d4118838.7%57.9%
C92Ruy Lopez, closed, 9.h338242.7%52.2%
C87Ruy Lopez, closed, Averbach variation24341.6%59.5%
C88Ruy Lopez, closed, Balla variation3941.0%48.7%
C84Ruy Lopez, closed, Basque gambit (North Spanish variation)250.0%25.0%
C91Ruy Lopez, closed, Bogolyubov variation369943.0%53.9%
C96Ruy Lopez, closed, Borisenko defence4040.0%57.5%
C94Ruy Lopez, closed, Breyer defence4233.3%57.1%
C95Ruy Lopez, closed, Breyer, 10.d410.0%0.0%
C95Ruy Lopez, closed, Breyer, Borisenko variation70339.7%56.4%
C95Ruy Lopez, closed, Breyer, Gligoric variation4845.8%54.2%
C95Ruy Lopez, closed, Breyer, Simagin variation2035.0%57.5%
C97Ruy Lopez, closed, Chigorin defence72931.0%63.0%
C98Ruy Lopez, closed, Chigorin, 12...Nc613631.6%61.4%
C99Ruy Lopez, closed, Chigorin, 12...c5d490240.4%62.7%
C92Ruy Lopez, closed, Flohr-Zaitsev system (Lenzerheide variation)183838.6%56.4%
C96Ruy Lopez, closed, Keres (...Nd7) defence19737.6%65.0%
C92Ruy Lopez, closed, Keres (9...a5) variation1650.0%43.8%
C92Ruy Lopez, closed, Kholmov variation11930.3%66.4%
C90Ruy Lopez, closed, Lutikov variation3748.6%56.8%
C90Ruy Lopez, closed, Pilnik variation79935.5%51.8%
C92Ruy Lopez, closed, Ragozin-Petrosian (`Keres') variation28443.0%64.1%
C96Ruy Lopez, closed, Rossolimo defence30.0%33.3%
C93Ruy Lopez, closed, Smyslov defence15139.7%58.3%
C90Ruy Lopez, closed, Suetin variation6737.3%56.0%
C88Ruy Lopez, closed, anti-Marshall 8.a4146339.5%53.9%
C84Ruy Lopez, closed, centre attack16748.5%46.4%
C68Ruy Lopez, exchange variation7541.3%51.3%
C69Ruy Lopez, exchange variation, 5.O-O60641.7%52.9%
C69Ruy Lopez, exchange variation, Alapin gambit26741.2%50.6%
C68Ruy Lopez, exchange, Alekhine variation1442.9%42.9%
C69Ruy Lopez, exchange, Bronstein variation43932.1%50.0%
C69Ruy Lopez, exchange, Gligoric variation62941.0%56.4%
C68Ruy Lopez, exchange, Keres variation8253.7%51.2%
C68Ruy Lopez, exchange, Romanovsky variation1233.3%50.0%
C60Ruy Lopez, fianchetto (Smyslov/Barnes) defence23840.8%52.7%
C70Ruy Lopez, fianchetto defence deferred2466.7%58.3%
C77Ruy Lopez, four knights (Tarrasch) variation14745.6%56.1%
C71Ruy Lopez, modern Steinitz defence10541.9%55.2%
C74Ruy Lopez, modern Steinitz defence5038.0%57.0%
C75Ruy Lopez, modern Steinitz defence14241.5%55.3%
C72Ruy Lopez, modern Steinitz defence, 5.O-O35644.1%58.8%
C73Ruy Lopez, modern Steinitz defence, Alapin variation6538.5%54.6%
C71Ruy Lopez, modern Steinitz defence, Duras (Keres) variation10242.2%55.4%
C73Ruy Lopez, modern Steinitz defence, Richter variation13351.9%53.8%
C75Ruy Lopez, modern Steinitz defence, Rubinstein variation6536.9%56.9%
C71Ruy Lopez, modern Steinitz defence, Three knights variation1741.2%50.0%
C76Ruy Lopez, modern Steinitz defence, fianchetto (Bronstein) variation29735.4%51.7%
C74Ruy Lopez, modern Steinitz defence, siesta variation2045.0%47.5%
C62Ruy Lopez, old Steinitz defence24037.1%54.8%
C62Ruy Lopez, old Steinitz defence, Nimzovich attack520.0%50.0%
C80Ruy Lopez, open (Tarrasch) defence5745.6%59.6%
C67Ruy Lopez, open Berlin defence, 5...Be76633.3%53.0%
C67Ruy Lopez, open Berlin defence, Showalter variation1428.6%42.9%
C67Ruy Lopez, open Berlin defence, l'Hermet variation7556.0%49.3%
C80Ruy Lopez, open, 6.d44537.8%45.6%
C80Ruy Lopez, open, 7.Bb348340.8%52.9%
C80Ruy Lopez, open, 8...Be6121638.0%43.0%
C83Ruy Lopez, open, 9...Be7, 10.Re14334.9%54.7%
C82Ruy Lopez, open, 9.c350.0%80.0%
C80Ruy Lopez, open, Berger variation366.7%33.3%
C82Ruy Lopez, open, Berlin variation1637.5%68.8%
C80Ruy Lopez, open, Bernstein variation81647.2%62.7%
C80Ruy Lopez, open, Bernstein variation, Karpov gambit2245.5%45.5%
C83Ruy Lopez, open, Breslau variation250.0%75.0%
C82Ruy Lopez, open, Dilworth variation15740.8%61.1%
C80Ruy Lopez, open, Friess attack1020.0%60.0%
C80Ruy Lopez, open, Harksen gambit10.0%100.0%
C81Ruy Lopez, open, Howell attack13151.9%50.4%
C81Ruy Lopez, open, Howell attack, Adam variation20.0%0.0%
C81Ruy Lopez, open, Howell attack, Ekstroem variation1040.0%60.0%
C82Ruy Lopez, open, Italian variation8847.7%65.9%
C83Ruy Lopez, open, Malkin variation862.5%68.8%
C82Ruy Lopez, open, Motzko attack5644.6%58.0%
C82Ruy Lopez, open, Motzko attack, Nenarokov variation650.0%75.0%
C80Ruy Lopez, open, Riga variation1050.0%65.0%
C80Ruy Lopez, open, Schlechter defence1931.6%26.3%
C82Ruy Lopez, open, St. Petersburg variation18440.2%66.3%
C80Ruy Lopez, open, Tartakower variation540.0%40.0%
C80Ruy Lopez, open, Zukertort variation333.3%50.0%
C83Ruy Lopez, open, classical defence16149.1%59.9%
A06Santasiere's folly10840.7%41.7%
A00Saragossa opening28629.0%49.8%
B01Scandinavian (centre counter) defence239241.7%57.0%
B01Scandinavian defence78040.9%57.9%
B01Scandinavian defence, Gruenfeld variation40.0%75.0%
B01Scandinavian defence, Lasker variation11332.7%65.0%
B01Scandinavian gambit13941.7%52.5%
B01Scandinavian, Anderssen counter-attack orthodox attack10.0%100.0%
B01Scandinavian, Anderssen counter-attack, Collijn variation10.0%100.0%
B01Scandinavian, Icelandic gambit5448.1%55.6%
B01Scandinavian, Kiel variation728.6%85.7%
B01Scandinavian, Marshall variation52044.4%60.1%
B01Scandinavian, Mieses-Kotrvc gambit862.5%43.8%
B01Scandinavian, Pytel-Wade variation250744.4%58.0%
B01Scandinavian, Richter variation250.0%75.0%
C44Scotch gambit4233.3%59.5%
C44Scotch gambit, Anderssen (Paulsen, Suhle) counter-attack666.7%33.3%
C44Scotch gambit, Benima defence4734.0%55.3%
C44Scotch gambit, Dubois-Reti defence27040.0%52.2%
C44Scotch gambit, Hanneken variation10.0%100.0%
C45Scotch game223542.6%53.4%
C44Scotch opening2100.0%50.0%
C45Scotch, Blackburne attack1637.5%50.0%
C45Scotch, Blumenfeld attack1637.5%31.3%
C45Scotch, Ghulam Kassim variation2100.0%50.0%
C44Scotch, Goering gambit18044.4%57.2%
C44Scotch, Goering gambit, Bardeleben variation837.5%43.8%
C45Scotch, Horwitz attack2433.3%66.7%
C44Scotch, Lolli variation1435.7%53.6%
C45Scotch, Meitner variation3554.3%55.7%
C45Scotch, Mieses variation131341.2%54.2%
C45Scotch, Paulsen attack10.0%100.0%
C45Scotch, Potter variation49339.8%51.5%
C45Scotch, Pulling counter-attack20.0%50.0%
C44Scotch, Relfsson gambit ('MacLopez')666.7%66.7%
C45Scotch, Romanishin variation5545.5%59.1%
C45Scotch, Schmidt variation58251.0%47.2%
C45Scotch, Steinitz variation4035.0%55.0%
C45Scotch, Tartakower variation1540.0%46.7%
A44Semi-Benoni (`blockade variation')8631.4%62.2%
B50Sicilian325940.9%53.0%
B54Sicilian62337.9%55.2%
B56Sicilian143839.7%53.3%
B20Sicilian defence189035.9%50.6%
B27Sicilian defence1631.3%53.1%
B30Sicilian defence233240.8%54.5%
B32Sicilian defence73838.5%56.2%
B33Sicilian defence40434.9%53.8%
B40Sicilian defence442539.1%54.1%
B44Sicilian defence30443.1%52.1%
B22Sicilian, 2.c3, Heidenfeld variation5726.3%44.7%
B22Sicilian, Alapin's variation (2.c3)552043.6%54.5%
B40Sicilian, Anderssen variation69940.8%58.2%
B21Sicilian, Andreaschek gambit1442.9%57.1%
B58Sicilian, Boleslavsky variation42736.8%47.9%
B59Sicilian, Boleslavsky variation, 7.Nb311947.1%52.1%
B58Sicilian, Boleslavsky, Louma variation4535.6%57.8%
B51Sicilian, Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack144539.0%55.7%
B52Sicilian, Canal-Sokolsky attack, 3...Bd7151542.8%49.8%
B52Sicilian, Canal-Sokolsky attack, Bronstein gambit19139.8%57.6%
B52Sicilian, Canal-Sokolsky attack, Sokolsky variation74543.6%55.6%
B53Sicilian, Chekhover variation103042.1%49.5%
B53Sicilian, Chekhover, Zaitsev variation4221.4%58.3%
B32Sicilian, Flohr variation20532.2%61.0%
B21Sicilian, Grand Prix attack141835.8%52.5%
B23Sicilian, Grand Prix attack63535.7%49.5%
B23Sicilian, Grand Prix attack, Schofman variation15040.7%53.0%
B27Sicilian, Hungarian variation321941.0%57.7%
B41Sicilian, Kan variation19640.3%54.8%
B42Sicilian, Kan, 5.Bd3164436.9%58.0%
B43Sicilian, Kan, 5.Nc3257538.8%56.5%
B42Sicilian, Kan, Gipslis variation7839.7%63.5%
B41Sicilian, Kan, Maroczy bind (Reti variation)41536.1%57.6%
B41Sicilian, Kan, Maroczy bind - Bronstein variation1936.8%28.9%
B42Sicilian, Kan, Polugaievsky variation123536.1%54.3%
B42Sicilian, Kan, Swiss cheese variation25135.5%61.6%
B27Sicilian, Katalimov variation12646.0%61.9%
B20Sicilian, Keres variation (2.Ne2)56440.8%52.5%
B32Sicilian, Labourdonnais-Loewenthal (Kalashnikov) variation108639.7%56.7%
B32Sicilian, Labourdonnais-Loewenthal variation20641.7%59.7%
B57Sicilian, Magnus Smith trap1050.0%35.0%
B40Sicilian, Marshall variation10.0%100.0%
B90Sicilian, Najdorf244636.6%53.5%
B98Sicilian, Najdorf variation32730.0%57.8%
B95Sicilian, Najdorf, 6...e698738.8%49.5%
B94Sicilian, Najdorf, 6.Bg568935.8%53.0%
B93Sicilian, Najdorf, 6.f4152239.9%50.6%
B98Sicilian, Najdorf, 7...Be712233.6%54.5%
B99Sicilian, Najdorf, 7...Be7 main line56929.2%53.4%
B97Sicilian, Najdorf, 7...Qb6143833.0%46.2%
B96Sicilian, Najdorf, 7.f4117133.9%51.3%
B90Sicilian, Najdorf, Adams attack101237.7%51.4%
B98Sicilian, Najdorf, Browne variation4228.6%61.9%
B90Sicilian, Najdorf, Byrne (English) attack1837435.2%53.2%
B98Sicilian, Najdorf, Goteborg (Argentine) variation2045.0%47.5%
B90Sicilian, Najdorf, Lipnitzky attack88135.6%49.9%
B92Sicilian, Najdorf, Opovcensky variation482540.1%53.1%
B97Sicilian, Najdorf, Poisoned pawn variation106844.8%49.7%
B96Sicilian, Najdorf, Polugayevsky variation9137.4%53.8%
B96Sicilian, Najdorf, Polugayevsky, Simagin variation3122.6%56.5%
B91Sicilian, Najdorf, Zagreb (fianchetto) variation60038.0%54.0%
B32Sicilian, Nimzovich variation2339.1%54.3%
B31Sicilian, Nimzovich-Rossolimo attack (with ...g6, without ...d6)250941.2%55.9%
B30Sicilian, Nimzovich-Rossolimo attack (without ...d6)392837.7%56.1%
B31Sicilian, Nimzovich-Rossolimo attack, Gurgenidze variation2152.4%54.8%
B29Sicilian, Nimzovich-Rubinstein variation61440.6%60.0%
B29Sicilian, Nimzovich-Rubinstein; Rubinstein counter-gambit3056.7%45.0%
B28Sicilian, O'Kelly variation28038.9%55.2%
B33Sicilian, Pelikan (Lasker/Sveshnikov) variation90135.1%55.6%
B33Sicilian, Pelikan, Bird variation22138.0%64.3%
B33Sicilian, Pelikan, Chelyabinsk variation201035.7%57.3%
B40Sicilian, Pin variation (Sicilian counter-attack)1346.2%69.2%
B40Sicilian, Pin, Koch variation3625.0%79.2%
B54Sicilian, Prins (Moscow) variation37236.8%55.8%
B55Sicilian, Prins variation, Venice attack3641.7%51.4%
B27Sicilian, Quinteros variation3537.1%64.3%
B60Sicilian, Richter-Rauzer57235.1%57.8%
B62Sicilian, Richter-Rauzer, 6...e64337.2%58.1%
B60Sicilian, Richter-Rauzer, Bondarevsky variation2552.0%58.0%
B62Sicilian, Richter-Rauzer, Keres variation6131.1%51.6%
B60Sicilian, Richter-Rauzer, Larsen variation13030.8%60.8%
B61Sicilian, Richter-Rauzer, Larsen variation, 7.Qd238137.0%60.8%
B62Sicilian, Richter-Rauzer, Margate (Alekhine) variation4634.8%52.2%
B62Sicilian, Richter-Rauzer, Podvebrady variation1656.3%34.4%
B63Sicilian, Richter-Rauzer, Rauzer attack13336.8%57.5%
B63Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7107337.1%55.8%
B65Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9...Nxd451140.5%55.9%
B64Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9.f425338.3%54.0%
B66Sicilian, Richter-Rauzer, Rauzer attack, 7...a6559233.7%51.4%
B69Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 11.Bxf67532.0%61.3%
B67Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 8...Bd7263233.4%55.6%
B68Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 9...Be79931.3%58.1%
B64Sicilian, Richter-Rauzer, Rauzer attack, Geller variation1136.4%63.6%
B62Sicilian, Richter-Rauzer, Richter attack10.0%100.0%
B84Sicilian, Scheveningen (Paulsen), classical variation350538.6%51.8%
B80Sicilian, Scheveningen variation118630.9%54.4%
B83Sicilian, Scheveningen, 6.Be251939.7%52.8%
B82Sicilian, Scheveningen, 6.f443932.1%57.3%
B80Sicilian, Scheveningen, English variation13732.1%51.8%
B81Sicilian, Scheveningen, Keres attack215934.4%59.5%
B82Sicilian, Scheveningen, Tal variation9835.7%59.7%
B80Sicilian, Scheveningen, Vitolins variation4746.8%51.1%
B85Sicilian, Scheveningen, classical13040.8%51.9%
B85Sicilian, Scheveningen, classical main line34046.8%55.4%
B85Sicilian, Scheveningen, classical variation with ...Qc7 and ...Nc6366.7%66.7%
B85Sicilian, Scheveningen, classical, Maroczy system2536.0%54.0%
B84Sicilian, Scheveningen, classical, Nd7 system6334.9%49.2%
B80Sicilian, Scheveningen, fianchetto variation17133.9%51.5%
B21Sicilian, Smith-Morra gambit66741.1%47.5%
B86Sicilian, Sozin attack14940.9%54.0%
B87Sicilian, Sozin with ...a6 and ...b573936.5%51.2%
B89Sicilian, Sozin, 7.Be397236.6%50.3%
B57Sicilian, Sozin, Benko variation125239.1%51.7%
B88Sicilian, Sozin, Fischer variation1346.2%53.8%
B88Sicilian, Sozin, Leonhardt variation49140.9%54.7%
B57Sicilian, Sozin, not Scheveningen21441.1%56.1%
B20Sicilian, Steinitz variation33444.0%49.9%
B33Sicilian, Sveshnikov variation130238.6%50.9%
B44Sicilian, Szen (`anti-Taimanov') variation76439.1%54.3%
B44Sicilian, Szen variation, Dely-Kasparov gambit1957.9%60.5%
B44Sicilian, Szen, hedgehog variation22639.8%50.9%
B47Sicilian, Taimanov (Bastrikov) variation359441.4%54.2%
B45Sicilian, Taimanov variation175838.0%56.8%
B46Sicilian, Taimanov variation297638.3%55.0%
B48Sicilian, Taimanov variation297937.1%55.9%
B49Sicilian, Taimanov variation58844.7%58.2%
B45Sicilian, Taimanov, American attack1741.2%44.1%
B89Sicilian, Velimirovic attack70333.4%51.3%
B56Sicilian, Venice attack5137.3%63.7%
B39Sicilian, accelerated fianchetto, Breyer variation59340.8%58.0%
B36Sicilian, accelerated fianchetto, Gurgenidze variation24344.0%60.3%
B36Sicilian, accelerated fianchetto, Maroczy bind87945.1%58.0%
B37Sicilian, accelerated fianchetto, Maroczy bind, 5...Bg712047.5%56.3%
B38Sicilian, accelerated fianchetto, Maroczy bind, 6.Be3105744.3%57.4%
B37Sicilian, accelerated fianchetto, Simagin variation2100.0%50.0%
B34Sicilian, accelerated fianchetto, exchange variation1747.1%70.6%
B34Sicilian, accelerated fianchetto, modern variation30836.0%52.4%
B35Sicilian, accelerated fianchetto, modern variation with Bc4185643.2%52.9%
B23Sicilian, chameleon variation52435.1%58.4%
B58Sicilian, classical20145.3%46.5%
B23Sicilian, closed273338.4%51.5%
B24Sicilian, closed37436.9%48.9%
B25Sicilian, closed21937.4%48.9%
B23Sicilian, closed, 2...Nc6157341.4%52.0%
B26Sicilian, closed, 6.Be355632.9%49.6%
B25Sicilian, closed, 6.Ne2 e5 (Botvinnik)3729.7%50.0%
B25Sicilian, closed, 6.f439640.7%50.9%
B25Sicilian, closed, 6.f4 e5 (Botvinnik)2646.2%53.8%
B23Sicilian, closed, Korchnoi variation11354.9%51.3%
B24Sicilian, closed, Smyslov variation2133.3%54.8%
B70Sicilian, dragon variation66241.2%51.7%
B72Sicilian, dragon, 6.Be38134.6%54.3%
B71Sicilian, dragon, Levenfish variation3630.6%56.9%
B71Sicilian, dragon, Levenfish; Flohr variation450.0%50.0%
B75Sicilian, dragon, Yugoslav attack23730.0%57.2%
B78Sicilian, dragon, Yugoslav attack, 10.O-O-O29628.4%55.4%
B79Sicilian, dragon, Yugoslav attack, 12.h41030.0%65.0%
B76Sicilian, dragon, Yugoslav attack, 7...O-O29134.7%52.1%
B77Sicilian, dragon, Yugoslav attack, 9...Bd719742.6%55.8%
B77Sicilian, dragon, Yugoslav attack, 9.Bc410333.0%49.5%
B76Sicilian, dragon, Yugoslav attack, Rauser variation88433.3%64.8%
B72Sicilian, dragon, classical attack8038.8%51.9%
B73Sicilian, dragon, classical, 8.O-O34444.5%51.9%
B74Sicilian, dragon, classical, 9.Nb334652.3%47.5%
B74Sicilian, dragon, classical, Alekhine variation2347.8%67.4%
B72Sicilian, dragon, classical, Amsterdam variation4124.4%48.8%
B72Sicilian, dragon, classical, Grigoriev variation2445.8%52.1%
B72Sicilian, dragon, classical, Nottingham variation1844.4%55.6%
B74Sicilian, dragon, classical, Reti-Tartakower variation8144.4%55.6%
B73Sicilian, dragon, classical, Richter variation10043.0%57.5%
B74Sicilian, dragon, classical, Spielmann variation837.5%56.3%
B73Sicilian, dragon, classical, Zollner gambit837.5%43.8%
B83Sicilian, modern Scheveningen40542.5%47.7%
B83Sicilian, modern Scheveningen, main line49344.2%53.8%
B83Sicilian, modern Scheveningen, main line with Nb38636.0%57.6%
B20Sicilian, wing gambit5750.9%41.2%
B50Sicilian, wing gambit deferred2123.8%35.7%
B20Sicilian, wing gambit, Carlsbad variation944.4%44.4%
B20Sicilian, wing gambit, Marshall variation6129.5%55.7%
B00St. George (Baker) defence3839.5%59.2%
C00St. George defence9246.7%64.7%
A06Tennison (Lemberg, Zukertort) gambit1656.3%40.6%
C46Three knights game11637.1%53.9%
C46Three knights, Schlechter variation1428.6%42.9%
C46Three knights, Steinitz variation2839.3%55.4%
C46Three knights, Steinitz, Rosenthal variation540.0%40.0%
C46Three knights, Winawer defence (Gothic defence)10.0%100.0%
D03Torre attack (Tartakower variation)63239.6%50.6%
A45Trompovsky attack (Ruth, Opovcensky opening)332935.6%52.1%
C55Two knights defence5141.2%50.0%
C56Two knights defence13743.8%48.9%
C57Two knights defence812.5%31.3%
C58Two knights defence16036.3%56.3%
C59Two knights defence19037.9%48.9%
C55Two knights defence (Modern bishop's opening)118838.6%56.0%
C58Two knights defence, Blackburne variation30.0%66.7%
C58Two knights defence, Bogolyubov variation4932.7%49.0%
C56Two knights defence, Canal variation540.0%40.0%
C58Two knights defence, Colman variation1723.5%35.3%
C57Two knights defence, Fegatello attack5927.1%54.2%
C57Two knights defence, Fegatello attack, Leonhardt variation825.0%50.0%
C57Two knights defence, Fegatello attack, Polerio defence30.0%100.0%
C57Two knights defence, Fritz variation560.0%30.0%
C57Two knights defence, Fritz, Gruber variation425.0%37.5%
C59Two knights defence, Goering variation425.0%12.5%
C58Two knights defence, Kieseritsky variation633.3%66.7%
C57Two knights defence, Lolli attack1936.8%55.3%
C58Two knights defence, Paoli variation933.3%72.2%
C55Two knights defence, Perreux variation2548.0%52.0%
C59Two knights defence, Steinitz variation31329.7%47.4%
C57Two knights defence, Ulvestad variation1866.7%44.4%
C57Two knights defence, Wilkes Barre (Traxler) variation4637.0%53.3%
C58Two knights defence, Yankovich variation1241.7%20.8%
C55Two knights, Max Lange attack1631.3%59.4%
C55Two knights, Max Lange attack, Loman defence10.0%100.0%
C55Two knights, Max Lange attack, Marshall variation825.0%62.5%
C55Two knights, Max Lange attack, Schlechter variation1942.1%52.6%
C55Two knights, Max Lange attack, Steinitz variation1241.7%62.5%
A00Van't Kruijs opening44540.0%51.5%
C25Vienna gambit2725.9%53.7%
C29Vienna gambit16639.2%46.1%
C29Vienna gambit, Bardeleben variation650.0%25.0%
C29Vienna gambit, Breyer variation8630.2%55.8%
C29Vienna gambit, Kaufmann variation837.5%68.8%
C29Vienna gambit, Paulsen attack580.0%60.0%
C29Vienna gambit, Steinitz variation540.0%40.0%
C29Vienna gambit, Wurzburger trap20.0%100.0%
C25Vienna game24334.2%60.7%
C26Vienna game23645.3%54.0%
C27Vienna game9245.7%54.3%
C28Vienna game33541.8%53.4%
C25Vienna game, Max Lange defence2142.9%50.0%
C27Vienna, Alekhine variation1338.5%50.0%
C26Vienna, Falkbeer variation4344.2%54.7%
C26Vienna, Mengarini variation1060.0%40.0%
C25Vienna, Paulsen variation7233.3%56.9%
C26Vienna, Paulsen-Mieses variation38041.6%53.4%
C25Vienna, Pierce gambit757.1%57.1%
C25Vienna, Steinitz gambit10.0%0.0%
C27Vienna, `Frankenstein-Dracula' variation10.0%100.0%
A56Vulture defence1100.0%50.0%
A00Ware (Meadow Hay) opening425.0%62.5%
B12de Bruycker defence520.0%70.0%

Created in 2005-2013 by CCRL team
Last games added on November 18, 2017