CCRL 40/4
Downloads and Statistics
July 15, 2018
Testing summary:
Total: 1'778'011 games
played by 2'088 programs
23739 CPU days (X2 4600+)

White wins: 694'623 (39.1%)
Black wins: 563'239 (31.7%)
Draws: 520'149 (29.3%)
White score: 53.7%

Opening statistics

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

ECOOpeningNumber
of
games
DrawsWhite
score
C20Alapin's opening11023.6%48.2%
B02Alekhine's defence61032.6%55.3%
B03Alekhine's defence79823.9%53.6%
B03Alekhine's defence, Balogh variation4320.9%59.3%
B02Alekhine's defence, Brooklyn defence8721.8%61.5%
B02Alekhine's defence, Kmoch variation60.0%50.0%
B02Alekhine's defence, Krejcik variation1827.8%36.1%
B02Alekhine's defence, Maroczy variation27222.8%47.4%
B02Alekhine's defence, Mokele Mbembe (Buecker) variation2924.1%63.8%
B03Alekhine's defence, O'Sullivan gambit166.3%59.4%
B02Alekhine's defence, Saemisch attack28623.1%58.4%
B02Alekhine's defence, Scandinavian variation42028.3%56.5%
B02Alekhine's defence, Spielmann variation1631.3%59.4%
B02Alekhine's defence, Steiner variation825.0%37.5%
B02Alekhine's defence, Two pawns' (Lasker's) attack15941.5%47.8%
B02Alekhine's defence, Two pawns' attack, Mikenas variation250.0%75.0%
B02Alekhine's defence, Welling variation4422.7%47.7%
B03Alekhine's defence, exchange variation86732.1%58.2%
B03Alekhine's defence, exchange, Karpov variation540.0%40.0%
B03Alekhine's defence, four pawns attack9931.3%59.1%
B03Alekhine's defence, four pawns attack, 6...Nc67720.8%54.5%
B03Alekhine's defence, four pawns attack, 7.Be318828.7%64.4%
B03Alekhine's defence, four pawns attack, Ilyin-Genevsky var.20.0%50.0%
B03Alekhine's defence, four pawns attack, Planinc variation425.0%87.5%
B03Alekhine's defence, four pawns attack, Tartakower variation250.0%75.0%
B03Alekhine's defence, four pawns attack, Trifunovic variation7425.7%65.5%
B03Alekhine's defence, four pawns attack, fianchetto variation5538.2%62.7%
B04Alekhine's defence, modern variation42423.3%61.7%
B05Alekhine's defence, modern variation, 4...Bg499730.0%63.9%
B05Alekhine's defence, modern, Alekhine variation650.0%58.3%
B05Alekhine's defence, modern, Flohr variation44229.9%64.9%
B04Alekhine's defence, modern, Keres variation19633.2%62.0%
B04Alekhine's defence, modern, Larsen variation143232.3%57.4%
B05Alekhine's defence, modern, Panov variation2035.0%67.5%
B04Alekhine's defence, modern, Schmid variation13929.5%65.8%
B05Alekhine's defence, modern, Vitolins attack850.0%25.0%
B04Alekhine's defence, modern, fianchetto variation97731.2%54.8%
A00Amar (Paris) opening7622.4%41.4%
A00Amar gambit1216.7%50.0%
A00Amsterdam attack933.3%50.0%
A00Anderssen's opening70321.9%47.5%
A00Anti-Borg (Desprez) opening2321.7%58.7%
B00Barnes defence1816.7%63.9%
A00Battambang opening933.3%27.8%
A40Beefeater defence3625.0%59.7%
A57Benko gambit125425.2%54.3%
A59Benko gambit8632.6%64.0%
A58Benko gambit accepted86131.2%55.2%
A57Benko gambit half accepted126729.7%57.8%
A59Benko gambit, 7.e41435.7%67.9%
A58Benko gambit, Nd2 variation1631.3%46.9%
A59Benko gambit, Ne2 variation1428.6%64.3%
A57Benko gambit, Nescafe Frappe attack120.0%33.3%
A57Benko gambit, Zaitsev system7927.8%51.9%
A58Benko gambit, fianchetto variation39929.8%55.3%
A59Benko gambit, main line101034.2%62.7%
A00Benko's opening1189530.8%51.1%
A00Benko's opening, reversed Alekhine11726.5%50.0%
A56Benoni defence165926.8%58.6%
A60Benoni defence24227.3%52.9%
A61Benoni defence74824.9%58.6%
A56Benoni defence, Hromodka system114021.1%58.5%
A65Benoni, 6.e420323.6%59.6%
A66Benoni, Mikenas variation450.0%50.0%
A61Benoni, Nimzovich (knight's tour) variation72527.2%57.3%
A67Benoni, Taimanov variation48419.2%58.2%
A61Benoni, Uhlmann variation11029.1%50.9%
A78Benoni, classical with ...Re8 and ...Na68834.1%53.4%
A75Benoni, classical with ...a6 and 10...Bg416828.0%54.5%
A70Benoni, classical with e4 and Nf3165726.7%58.7%
A70Benoni, classical without 9.O-O922.2%77.8%
A72Benoni, classical without 9.O-O12528.0%60.4%
A79Benoni, classical, 11.f320521.0%66.6%
A71Benoni, classical, 8.Bg513525.9%53.7%
A76Benoni, classical, 9...Re813215.9%59.5%
A77Benoni, classical, 9...Re8, 10.Nd241824.6%56.1%
A74Benoni, classical, 9...a6, 10.a43033.3%53.3%
A73Benoni, classical, 9.O-O28924.9%53.6%
A61Benoni, fianchetto variation6825.0%53.7%
A62Benoni, fianchetto variation163722.5%55.6%
A64Benoni, fianchetto, 11...Re818926.5%52.9%
A63Benoni, fianchetto, 9...Nbd713225.8%59.1%
A68Benoni, four pawns attack140.0%42.9%
A69Benoni, four pawns attack, main line9532.6%42.6%
A66Benoni, pawn storm variation666.7%66.7%
A02Bird's opening288729.5%49.7%
A03Bird's opening309824.4%48.6%
A03Bird's opening, Lasker variation5733.3%51.8%
A02Bird's opening, Swiss gambit1414.3%64.3%
A03Bird's opening, Williams gambit1816.7%58.3%
A02Bird, From gambit9127.5%46.7%
A02Bird, From gambit, Lasker variation3414.7%54.4%
A02Bird, From gambit, Lipke variation520.0%30.0%
A02Bird, Hobbs gambit425.0%62.5%
C23Bishop's opening40724.3%52.9%
C24Bishop's opening, Berlin defence151328.0%52.1%
C23Bishop's opening, Calabrese counter-gambit250.0%25.0%
C23Bishop's opening, Calabrese counter-gambit, Jaenisch variation1711.8%64.7%
C23Bishop's opening, Classical variation11918.5%50.4%
C23Bishop's opening, Lewis counter-gambit633.3%50.0%
C23Bishop's opening, Lewis gambit728.6%42.9%
C23Bishop's opening, Lisitsyn variation1100.0%50.0%
C23Bishop's opening, Philidor counter-attack10735.5%58.9%
C23Bishop's opening, Philidor variation1926.3%55.3%
C24Bishop's opening, Ponziani gambit2128.6%38.1%
C24Bishop's opening, Urusov gambit3228.1%45.3%
C24Bishop's opening, Urusov gambit, Panov variation616.7%58.3%
D00Blackmar gambit9028.9%42.2%
A45Blackmar-Diemer gambit17327.7%54.3%
D00Blackmar-Diemer gambit3215.6%51.6%
D00Blackmar-Diemer, Euwe defence110.0%45.5%
D00Blackmar-Diemer, Lemberg counter-gambit250.0%75.0%
E10Blumenfeld counter-gambit13127.5%54.2%
E10Blumenfeld counter-gambit accepted20523.4%53.7%
E10Blumenfeld counter-gambit, Dus-Chotimursky variation39728.2%55.9%
E10Blumenfeld counter-gambit, Spielmann variation10320.4%53.9%
C27Boden-Kieseritsky gambit6016.7%50.0%
C27Boden-Kieseritsky gambit, Lichtenhein defence633.3%33.3%
E11Bogo-Indian defence372833.0%55.4%
E11Bogo-Indian defence, Gruenfeld variation383731.1%55.4%
E11Bogo-Indian defence, Monticelli trap3026.7%56.7%
E11Bogo-Indian defence, Nimzovich variation275828.8%56.5%
A52Budapest defence7925.3%54.4%
A51Budapest defence declined6224.2%52.4%
A52Budapest, Adler variation74031.6%58.6%
A52Budapest, Alekhine variation6921.7%48.6%
A52Budapest, Alekhine, Abonyi variation5028.0%60.0%
A51Budapest, Fajarowicz variation13727.7%62.0%
A51Budapest, Fajarowicz, Steiner variation3100.0%50.0%
A52Budapest, Rubinstein variation83136.5%59.3%
A45Canard opening2718.5%50.0%
B10Caro-Kann defence619024.9%53.7%
B12Caro-Kann defence195621.9%57.2%
B15Caro-Kann defence62125.0%49.7%
B12Caro-Kann, 3.Nd250126.5%59.8%
B15Caro-Kann, Alekhine gambit3250.0%53.1%
B16Caro-Kann, Bronstein-Larsen variation78924.2%61.8%
B12Caro-Kann, Edinburgh variation5520.0%70.0%
B15Caro-Kann, Forgacs variation12236.1%54.9%
B10Caro-Kann, Goldman (Spielmann) variation11522.6%48.7%
B15Caro-Kann, Gurgenidze counter-attack3215.6%60.9%
B15Caro-Kann, Gurgenidze system55028.9%57.5%
B10Caro-Kann, Hillbilly attack3735.1%58.1%
B13Caro-Kann, Panov-Botvinnik attack193132.8%53.7%
B14Caro-Kann, Panov-Botvinnik attack, 5...e6688233.3%55.3%
B14Caro-Kann, Panov-Botvinnik attack, 5...g647638.7%53.8%
B13Caro-Kann, Panov-Botvinnik, Czerniak variation4045.0%60.0%
B13Caro-Kann, Panov-Botvinnik, Gunderam attack1136.4%45.5%
B13Caro-Kann, Panov-Botvinnik, Herzog defence2429.2%52.1%
B13Caro-Kann, Panov-Botvinnik, Reifir (Spielmann) variation425.0%87.5%
B13Caro-Kann, Panov-Botvinnik, normal variation25935.9%48.8%
B15Caro-Kann, Rasa-Studier gambit1723.5%35.3%
B17Caro-Kann, Steinitz variation554029.1%53.8%
B15Caro-Kann, Tartakower (Nimzovich) variation159832.7%52.8%
B12Caro-Kann, Tartakower (fantasy) variation108927.2%54.9%
B10Caro-Kann, Two knights variation93427.6%55.5%
B11Caro-Kann, Two knights, 3...Bg4173924.7%53.6%
B12Caro-Kann, advance variation2422024.8%54.4%
B12Caro-Kann, advance, Short variation9919.2%66.2%
B10Caro-Kann, anti-Caro-Kann defence137126.3%56.7%
B10Caro-Kann, anti-anti-Caro-Kann defence245533.5%51.8%
B18Caro-Kann, classical variation210030.3%54.9%
B18Caro-Kann, classical, 6.h4273330.8%53.5%
B19Caro-Kann, classical, 7...Nd793225.1%52.0%
B18Caro-Kann, classical, Flohr variation10437.5%59.1%
B18Caro-Kann, classical, Maroczy attack850.0%62.5%
B19Caro-Kann, classical, Spassky variation936527.8%57.5%
B10Caro-Kann, closed (Breyer) variation198024.6%50.7%
B13Caro-Kann, exchange variation113227.3%50.8%
B13Caro-Kann, exchange, Rubinstein variation22633.2%55.1%
B12Caro-Masi defence1414.3%50.0%
B00Carr's defence6524.6%53.8%
E00Catalan opening695830.7%54.3%
E01Catalan, closed56431.6%53.9%
E06Catalan, closed, 5.Nf3719034.6%54.4%
E07Catalan, closed, 6...Nbd719129.3%52.9%
E08Catalan, closed, 7.Qc224231.0%54.8%
E07Catalan, closed, Botvinnik variation15324.2%60.5%
E08Catalan, closed, Qc2 & b344728.2%52.3%
E09Catalan, closed, Sokolsky variation540.0%60.0%
E08Catalan, closed, Spassky gambit2722.2%59.3%
E08Catalan, closed, Zagoryansky variation450.0%75.0%
E09Catalan, closed, main line72328.2%56.7%
E04Catalan, open, 5.Nf31186032.5%53.6%
E02Catalan, open, 5.Qa410240.2%59.3%
E03Catalan, open, 5.Qa4 Nbd7, 6.Qxc43641.7%56.9%
E03Catalan, open, Alekhine variation156.7%43.3%
E05Catalan, open, classical line51831.3%56.0%
C21Centre game30233.4%57.5%
C22Centre game2825.0%55.4%
C22Centre game, Berger variation41226.5%53.3%
C22Centre game, Charousek variation714.3%50.0%
C22Centre game, Hall variation1533.3%43.3%
C22Centre game, Paulsen attack11734.2%50.4%
A00Clemenz (Mead's, Basman's or de Klerk's) opening517923.2%49.9%
D05Colle system80830.6%52.3%
B00Corn stalk defence1136.4%81.8%
A56Czech Benoni defence82324.5%62.1%
A56Czech Benoni, King's Indian system40719.9%60.3%
C40Damiano's defence2927.6%55.2%
C21Danish gambit6830.9%55.1%
C21Danish gambit, Collijn defence40.0%50.0%
C21Danish gambit, Soerensen defence3627.8%52.8%
A46Doery defence250.0%25.0%
E10Doery defence12021.7%45.8%
C44Dresden opening6020.0%45.0%
A00Dunst (Sleipner, Heinrichsen) opening199323.5%52.2%
A00Durkin's attack6717.9%53.7%
A80Dutch874026.2%54.1%
A81Dutch defence745728.6%56.1%
A84Dutch defence176225.8%56.4%
A90Dutch defence210326.1%55.8%
A91Dutch defence22133.5%52.9%
A92Dutch defence12132.2%59.9%
A92Dutch defence, Alekhine variation12130.6%58.3%
A81Dutch defence, Blackburne variation8531.8%61.8%
A90Dutch defence, Dutch-Indian (Nimzo-Dutch) variation49928.1%61.1%
A84Dutch defence, Rubinstein variation67927.7%56.7%
A85Dutch with c4 & Nc359333.1%55.8%
A86Dutch with c4 & g321926.0%62.3%
A80Dutch, 2.Bg5 variation261622.6%53.4%
A82Dutch, Balogh defence1323.1%50.0%
A86Dutch, Hort-Antoshin system40.0%75.0%
A97Dutch, Ilyin-Genevsky variation5429.6%63.0%
A98Dutch, Ilyin-Genevsky variation with Qc219726.9%60.2%
A99Dutch, Ilyin-Genevsky variation with b351125.2%59.4%
A97Dutch, Ilyin-Genevsky, Winter variation19135.1%64.7%
A80Dutch, Korchnoi attack11031.8%53.2%
A80Dutch, Krejcik gambit20832.2%45.0%
A86Dutch, Leningrad variation21432.2%60.0%
A81Dutch, Leningrad, Karlsbad variation742.9%64.3%
A87Dutch, Leningrad, main variation84028.5%59.5%
A89Dutch, Leningrad, main variation with Nc6153428.3%57.7%
A88Dutch, Leningrad, main variation with c6232231.1%56.4%
A80Dutch, Manhattan (Alapin, Ulvestad) variation13323.3%53.8%
A80Dutch, Spielmann gambit333.3%16.7%
A82Dutch, Staunton gambit16730.5%41.0%
A84Dutch, Staunton gambit deferred1827.8%41.7%
A83Dutch, Staunton gambit, Alekhine variation1931.6%63.2%
A83Dutch, Staunton gambit, Chigorin variation5832.8%68.1%
A83Dutch, Staunton gambit, Lasker variation1323.1%50.0%
A83Dutch, Staunton gambit, Nimzovich variation714.3%50.0%
A83Dutch, Staunton gambit, Staunton's line24826.6%46.8%
A82Dutch, Staunton gambit, Tartakower variation1816.7%47.2%
A80Dutch, Von Pretzel gambit333.3%16.7%
A96Dutch, classical variation57030.9%61.6%
A92Dutch, stonewall variation35426.6%58.8%
A94Dutch, stonewall with Ba318835.6%54.0%
A92Dutch, stonewall with Nc39028.9%60.0%
A95Dutch, stonewall with Nc347726.4%54.3%
A93Dutch, stonewall, Botwinnik variation27528.4%60.0%
A95Dutch, stonewall: Chekhover variation5036.0%56.0%
A90Dutch-Indian, Alekhine variation11230.4%49.1%
E10Dzindzikhashvili defence21226.9%59.2%
A10English opening499625.7%53.5%
A13English opening518425.6%52.7%
A15English opening1335433.0%54.1%
A16English opening126628.0%54.1%
A17English opening37430.7%53.1%
A20English opening1139728.5%52.3%
A21English opening345427.2%54.2%
A22English opening109125.6%50.6%
A13English opening, Agincourt variation297928.2%52.1%
A15English, 1...Nf6 (Anglo-Indian defense)170327.0%52.7%
A10English, Adorjan defence54136.4%51.7%
A10English, Anglo-Dutch defense140725.1%55.5%
A16English, Anglo-Gruenfeld defense32630.4%52.6%
A16English, Anglo-Gruenfeld defense, Korchnoi variation1631.3%65.6%
A16English, Anglo-Gruenfeld, Czech defense13530.4%66.3%
A16English, Anglo-Gruenfeld, Smyslov defense7739.0%59.7%
A22English, Bellon gambit2015.0%42.5%
A12English, Bled variation4431.8%59.1%
A26English, Botvinnik system42524.9%48.7%
A28English, Bradley Beach variation19628.6%44.4%
A24English, Bremen system with ...g69227.2%59.2%
A23English, Bremen system, Keres variation47133.1%49.3%
A22English, Bremen, Smyslov system275428.1%48.8%
A22English, Bremen, reverse dragon168934.6%53.2%
A12English, Capablanca's variation7729.9%48.7%
A22English, Carls' Bremen system89126.3%55.1%
A11English, Caro-Kann defensive system159328.0%56.0%
A12English, Caro-Kann defensive system28528.1%55.8%
A12English, Caro-Kann defensive system, Bogolyubov variation14723.8%50.0%
A10English, Jaenisch gambit1921.1%68.4%
A21English, Keres variation2634.6%44.2%
A21English, Kramnik-Shirov counterattack379028.5%52.4%
A13English, Kurajica defence12224.6%50.8%
A12English, London defensive system44131.1%50.7%
A18English, Mikenas-Carls variation11224.1%56.7%
A18English, Mikenas-Carls, Flohr variation18131.5%59.4%
A18English, Mikenas-Carls, Kevitz variation4717.0%55.3%
A19English, Mikenas-Carls, Sicilian variation26828.4%55.6%
A28English, Nenarokov variation8032.5%45.0%
A13English, Neo-Catalan209630.2%53.9%
A13English, Neo-Catalan accepted240933.7%54.4%
A14English, Neo-Catalan declined120035.9%53.3%
A12English, New York (London) defensive system5133.3%42.2%
A17English, Nimzo-English opening266730.9%54.6%
A20English, Nimzovich variation30426.3%53.6%
A20English, Nimzovich, Flohr variation67529.6%46.7%
A17English, Queens Indian formation24325.5%52.7%
A17English, Queens Indian, Romanishin variation4936.7%46.9%
A13English, Romanishin gambit86530.2%55.3%
A25English, Sicilian reversed114126.6%51.8%
A21English, Smyslov defence5527.3%57.3%
A14English, Symmetrical, Keres defence90636.2%54.9%
A12English, Torre defensive system44034.1%52.7%
A21English, Troeger defence18229.1%54.1%
A13English, Wimpey system35631.2%46.8%
A25English, closed system144928.1%53.5%
A26English, closed system34824.1%51.1%
A25English, closed system (without ...d6)10624.5%49.1%
A25English, closed, 5.Rb172928.5%52.1%
A25English, closed, 5.Rb1 Taimanov variation520.0%30.0%
A25English, closed, Hort variation4332.6%51.2%
A25English, closed, Taimanov variation3336.4%45.5%
A28English, four knights system67225.6%52.8%
A28English, four knights, 4.e3147328.4%51.5%
A28English, four knights, Capablanca variation51629.8%52.3%
A28English, four knights, Marini variation147331.9%53.7%
A28English, four knights, Nimzovich variation174630.3%51.9%
A28English, four knights, Romanishin variation120434.4%50.2%
A28English, four knights, Stean variation17824.7%55.6%
A29English, four knights, kingside fianchetto1850730.9%51.6%
A30English, symmetrical variation896829.3%54.0%
A32English, symmetrical variation96929.4%52.4%
A33English, symmetrical variation502334.7%52.3%
A34English, symmetrical variation196426.8%50.8%
A35English, symmetrical variation40227.9%57.2%
A36English, symmetrical variation17626.1%49.4%
A37English, symmetrical variation99329.4%52.9%
A38English, symmetrical variation76929.5%52.9%
A31English, symmetrical, Benoni formation235428.1%54.7%
A36English, symmetrical, Botvinnik system77527.4%55.0%
A36English, symmetrical, Botvinnik system reversed16128.0%50.0%
A37English, symmetrical, Botvinnik system reversed74827.7%51.4%
A33English, symmetrical, Geller variation348730.5%52.2%
A34English, symmetrical, Rubinstein system38233.5%53.1%
A35English, symmetrical, four knights system449730.2%52.8%
A30English, symmetrical, hedgehog system834732.0%55.6%
A30English, symmetrical, hedgehog, flexible formation59036.1%57.4%
A38English, symmetrical, main line with b31136.4%36.4%
A38English, symmetrical, main line with d316835.7%50.6%
A39English, symmetrical, main line with d4133737.1%55.0%
A34English, symmetrical, three knights system261935.2%52.4%
A27English, three knights system56427.7%52.7%
A36English, ultra-symmetrical variation234527.7%48.7%
C51Evans gambit60.0%0.0%
C52Evans gambit26826.1%38.8%
C51Evans gambit declined2733.3%42.6%
C51Evans gambit declined, 5.a410828.7%47.7%
C51Evans gambit declined, Cordel variation1330.8%30.8%
C51Evans gambit declined, Showalter variation1838.9%47.2%
C51Evans gambit, 5...Be7966.7%33.3%
C52Evans gambit, Alapin-Steinitz variation450.0%75.0%
C51Evans gambit, Cordel variation13131.3%49.2%
C51Evans gambit, Goering attack1127.3%59.1%
C52Evans gambit, Lasker defence1040.0%50.0%
C52Evans gambit, Leonhardt variation2100.0%50.0%
C52Evans gambit, Levenfish variation250.0%25.0%
C51Evans gambit, Morphy attack1338.5%57.7%
C51Evans gambit, Paulsen variation3611.1%44.4%
C52Evans gambit, Richardson attack616.7%25.0%
C51Evans gambit, Steinitz variation10.0%100.0%
C51Evans gambit, Stone-Ware variation6222.6%45.2%
C52Evans gambit, Tartakower attack11022.7%50.5%
C52Evans gambit, Waller attack616.7%41.7%
C52Evans gambit, compromised defence3312.1%57.6%
C52Evans gambit, compromised defence, Paulsen variation1625.0%68.8%
C51Evans gambit, normal variation1233.3%41.7%
C49Four knights13435.1%50.4%
C46Four knights game101029.3%50.4%
C48Four knights, Bardeleben variation728.6%57.1%
C47Four knights, Belgrade gambit26825.7%43.8%
C49Four knights, Gunsberg counter-attack1100.0%50.0%
C46Four knights, Gunsberg variation12729.9%42.5%
C46Four knights, Italian variation42529.2%49.2%
C49Four knights, Janowski variation2138.1%38.1%
C48Four knights, Marshall variation1315.4%61.5%
C49Four knights, Nimzovich (Paulsen) variation7744.2%53.2%
C48Four knights, Ranken variation2924.1%46.6%
C48Four knights, Rubinstein counter-gambit159426.4%54.2%
C48Four knights, Rubinstein counter-gambit, 5.Be21323.1%57.7%
C48Four knights, Rubinstein counter-gambit, Bogolyubov variation1631.3%53.1%
C48Four knights, Rubinstein counter-gambit, Henneberger variation5036.0%62.0%
C48Four knights, Rubinstein counter-gambit, exchange variation13342.1%48.9%
C46Four knights, Schultze-Mueller gambit2528.0%38.0%
C47Four knights, Scotch variation5335.8%59.4%
C47Four knights, Scotch, 4...exd479636.4%51.0%
C47Four knights, Scotch, Krause variation20733.3%52.9%
C48Four knights, Spanish variation35527.3%52.3%
C48Four knights, Spanish, classical defence17428.2%52.6%
C48Four knights, Spielmann variation633.3%50.0%
C49Four knights, Svenonius variation30.0%66.7%
C49Four knights, double Ruy Lopez34642.8%57.2%
C49Four knights, symmetrical variation52931.6%49.4%
C49Four knights, symmetrical, Blake variation475.0%62.5%
C49Four knights, symmetrical, Capablanca variation3342.4%57.6%
C49Four knights, symmetrical, Maroczy system9138.5%53.3%
C49Four knights, symmetrical, Metger unpin49235.0%52.2%
C49Four knights, symmetrical, Pillsbury variation4725.5%42.6%
C49Four knights, symmetrical, Tarrasch variation540.0%60.0%
B00Fred80.0%87.5%
C00French defence404123.8%54.3%
C11French defence63426.3%49.6%
C00French defence, Steiner variation114328.2%49.7%
C00French, Alapin variation4814.6%46.9%
C13French, Albin-Alekhine-Chatard attack48021.9%56.6%
C13French, Albin-Alekhine-Chatard attack, Breyer variation9228.3%55.4%
C13French, Albin-Alekhine-Chatard attack, Maroczy variation728.6%28.6%
C13French, Albin-Alekhine-Chatard attack, Spielmann variation6530.8%56.9%
C13French, Albin-Alekhine-Chatard attack, Teichmann variation922.2%88.9%
C11French, Burn variation984131.1%52.0%
C00French, Chigorin variation335125.0%50.9%
C10French, Fort Knox variation47034.5%54.3%
C10French, Frere (Becker) variation4822.9%55.2%
C11French, Henneberger variation3138.7%32.3%
C00French, King's Indian attack762228.5%51.0%
C00French, Labourdonnais variation65225.5%49.2%
C12French, MacCutcheon variation30630.7%51.3%
C12French, MacCutcheon, Bernstein variation2213.6%56.8%
C12French, MacCutcheon, Bogolyubov variation616.7%75.0%
C12French, MacCutcheon, Chigorin variation5135.3%51.0%
C12French, MacCutcheon, Dr. Olland (Dutch) variation3633.3%55.6%
C12French, MacCutcheon, Duras variation366.7%66.7%
C12French, MacCutcheon, Grigoriev variation955.6%50.0%
C12French, MacCutcheon, Janowski variation18125.4%59.1%
C12French, MacCutcheon, Lasker variation47519.8%52.6%
C12French, MacCutcheon, Lasker variation, 8...g677324.8%54.5%
C12French, MacCutcheon, Tartakower variation450.0%50.0%
C12French, MacCutcheon, advance variation1241.7%54.2%
C10French, Marshall variation1435.7%67.9%
C10French, Paulsen variation162227.3%56.4%
C00French, Pelikan variation8826.1%49.4%
C00French, Reti (Spielmann) variation29227.1%55.0%
C00French, Reversed Philidor formation8229.3%40.2%
C10French, Rubinstein variation894933.0%53.5%
C10French, Rubinstein, Capablanca line2236.4%54.5%
C00French, Schlechter variation48531.1%50.6%
C00French, Steinitz attack5036.0%52.0%
C11French, Steinitz variation190126.8%53.8%
C11French, Steinitz, Boleslavsky variation788026.3%54.5%
C11French, Steinitz, Bradford attack30.0%33.3%
C11French, Steinitz, Gledhill attack5438.9%52.8%
C11French, Swiss variation14131.2%44.7%
C03French, Tarrasch302130.0%56.5%
C05French, Tarrasch, Botvinnik variation15324.2%57.8%
C07French, Tarrasch, Eliskases variation12836.7%50.4%
C04French, Tarrasch, Guimard main line46326.1%56.5%
C03French, Tarrasch, Guimard variation24823.4%60.9%
C03French, Tarrasch, Haberditz variation1513.3%66.7%
C06French, Tarrasch, Leningrad variation5217.3%54.8%
C05French, Tarrasch, closed variation202124.6%57.2%
C06French, Tarrasch, closed variation, main line280932.4%55.2%
C07French, Tarrasch, open variation670332.7%52.8%
C09French, Tarrasch, open variation, main line222937.4%56.0%
C08French, Tarrasch, open, 4.ed ed380337.1%53.3%
C00French, Two knights variation100525.1%50.5%
C15French, Winawer (Nimzovich) variation138032.0%53.2%
C15French, Winawer, Alekhine (Maroczy) gambit41130.4%56.8%
C15French, Winawer, Alekhine gambit70.0%71.4%
C15French, Winawer, Alekhine gambit, Alatortsev variation1100.0%50.0%
C15French, Winawer, Alekhine gambit, Kan variation20034.0%49.0%
C15French, Winawer, Kondratiyev variation1442.9%64.3%
C16French, Winawer, Petrosian variation41325.2%54.0%
C16French, Winawer, advance variation118025.3%56.7%
C17French, Winawer, advance variation10025.0%60.5%
C18French, Winawer, advance variation81220.9%57.9%
C17French, Winawer, advance, 5.a378225.4%57.2%
C19French, Winawer, advance, 6...Ne790526.0%59.5%
C17French, Winawer, advance, Bogolyubov variation30929.1%56.3%
C17French, Winawer, advance, Rauzer variation955.6%50.0%
C17French, Winawer, advance, Russian variation7427.0%48.6%
C19French, Winawer, advance, Smyslov variation26725.8%59.0%
C19French, Winawer, advance, poisoned pawn variation520124.3%58.9%
C19French, Winawer, advance, poisoned pawn, Euwe-Gligoric variation1450.0%53.6%
C19French, Winawer, advance, poisoned pawn, Konstantinopolsky variation130125.4%60.4%
C19French, Winawer, advance, positional main line288123.5%57.6%
C18French, Winawer, classical variation82021.2%56.6%
C15French, Winawer, fingerslip variation4119.5%56.1%
C00French, Wing gambit5012.0%44.0%
C02French, advance variation210825.2%53.9%
C02French, advance, Euwe variation382425.5%52.6%
C02French, advance, Milner-Barry gambit12925.6%53.1%
C02French, advance, Nimzovich system33119.3%46.8%
C02French, advance, Nimzovich variation5125.5%28.4%
C02French, advance, Paulsen attack234024.5%53.3%
C02French, advance, Steinitz variation73227.9%50.0%
C02French, advance, Wade variation39727.7%54.7%
C13French, classical2512.0%54.0%
C14French, classical variation2412.5%22.9%
C14French, classical, Alapin variation9537.9%58.9%
C13French, classical, Anderssen variation4621.7%39.1%
C13French, classical, Anderssen-Richter variation1315.4%30.8%
C13French, classical, Frankfurt variation1618.8%84.4%
C14French, classical, Pollock variation1612.5%43.8%
C14French, classical, Rubinstein variation5320.8%55.7%
C14French, classical, Stahlberg variation450.0%75.0%
C14French, classical, Steinitz variation99527.1%58.0%
C14French, classical, Tarrasch variation850.0%62.5%
C13French, classical, Tartakower variation2626.9%55.8%
C13French, classical, Vistaneckis (Nimzovich) variation40.0%75.0%
C01French, exchange variation229232.6%53.3%
C01French, exchange, Bogolyubov variation922.2%33.3%
C01French, exchange, Svenonius variation6937.7%56.5%
A00Gedult's opening3116.1%40.3%
C50Giuoco Pianissimo204130.4%52.3%
C50Giuoco Pianissimo, Canal variation23830.3%51.3%
C50Giuoco Pianissimo, Italian four knights variation54129.2%55.6%
C50Giuoco Piano207428.9%51.0%
C53Giuoco Piano579028.1%52.6%
C54Giuoco Piano17226.7%57.0%
C53Giuoco Piano, Anderssen variation2250.0%52.3%
C53Giuoco Piano, Bird's attack14426.4%52.1%
C54Giuoco Piano, Greco variation1100.0%50.0%
C54Giuoco Piano, Greco's attack425.0%37.5%
C53Giuoco Piano, LaBourdonnais variation1942.1%63.2%
C53Giuoco Piano, Mestel variation250.0%75.0%
C54Giuoco Piano, Moeller (Therkatz) attack2544.0%38.0%
C53Giuoco Piano, Tarrasch variation425.0%62.5%
C53Giuoco Piano, centre-holding variation3122.6%62.9%
C53Giuoco Piano, close variation5831.0%53.4%
C50Giuoco Piano, four knights variation14228.2%51.4%
C55Giuoco piano1100.0%50.0%
A00Global opening1618.8%71.9%
C40Greco defence9418.1%64.4%
A00Grob's attack25421.7%47.0%
A00Grob, Fritz gambit3910.3%20.5%
D80Gruenfeld defence86641.2%53.5%
D99Gruenfeld defence, Smyslov, Yugoslav variation5149.0%59.8%
D99Gruenfeld defence, Smyslov, main line38930.6%61.8%
D93Gruenfeld with Bf4 e373437.5%52.7%
D94Gruenfeld with e3 Bd33040.0%60.0%
D95Gruenfeld with e3 & Qb37436.5%49.3%
D82Gruenfeld, 4.Bf461633.9%53.3%
D92Gruenfeld, 5.Bf4115533.4%55.4%
D91Gruenfeld, 5.Bg5209232.1%49.7%
D94Gruenfeld, 5.e376535.0%57.8%
D95Gruenfeld, Botvinnik variation11631.0%44.0%
D94Gruenfeld, Flohr defence6826.5%54.4%
D90Gruenfeld, Flohr variation31635.4%48.7%
D83Gruenfeld, Gruenfeld gambit7031.4%50.0%
D84Gruenfeld, Gruenfeld gambit accepted9326.9%66.1%
D83Gruenfeld, Gruenfeld gambit, Botvinnik variation2365.2%41.3%
D83Gruenfeld, Gruenfeld gambit, Capablanca variation11344.2%57.5%
D94Gruenfeld, Makogonov variation23332.6%51.1%
D94Gruenfeld, Opovcensky variation21337.6%49.3%
D81Gruenfeld, Russian variation40935.0%54.9%
D96Gruenfeld, Russian variation53530.3%53.6%
D97Gruenfeld, Russian variation with e47431.1%50.7%
D97Gruenfeld, Russian, Alekhine (Hungarian) variation424131.4%51.3%
D97Gruenfeld, Russian, Byrne (Simagin) variation35525.9%50.1%
D98Gruenfeld, Russian, Keres variation1225.0%70.8%
D97Gruenfeld, Russian, Levenfish variation2020.0%55.0%
D97Gruenfeld, Russian, Prins variation126633.6%55.6%
D98Gruenfeld, Russian, Smyslov variation60428.1%54.1%
D97Gruenfeld, Russian, Szabo (Boleslavsky) variation34928.9%60.6%
D90Gruenfeld, Schlechter variation3727.0%64.9%
D94Gruenfeld, Smyslov defence26235.5%52.5%
D88Gruenfeld, Spassky variation, main line, 10...cd, 11.cd34041.5%51.9%
D89Gruenfeld, Spassky variation, main line, 13.Bd310732.7%53.7%
D80Gruenfeld, Stockholm variation62035.2%50.5%
D90Gruenfeld, Three knights variation75434.7%54.0%
D85Gruenfeld, exchange variation312336.2%52.8%
D86Gruenfeld, exchange, Larsen variation2330.4%63.0%
D87Gruenfeld, exchange, Seville variation19339.4%64.8%
D86Gruenfeld, exchange, Simagin's improved variation14333.6%54.5%
D86Gruenfeld, exchange, Simagin's lesser variation6432.8%61.7%
D89Gruenfeld, exchange, Sokolsky variation6434.4%39.1%
D87Gruenfeld, exchange, Spassky variation72534.6%57.2%
D86Gruenfeld, exchange, classical variation139131.8%54.6%
D85Gruenfeld, modern exchange variation818536.7%53.5%
B00Guatemala defence10.0%100.0%
C40Gunderam defence25122.7%63.1%
C21Halasz gambit5228.8%39.4%
A43Hawk (Habichd) defence425.0%37.5%
C50Hungarian defence13137.4%53.8%
C44Inverted Hanham4827.1%49.0%
C44Inverted Hungarian5129.4%50.0%
C36KGA, Abbazia defence (classical defence, modern defence[!])3122.6%56.5%
C36KGA, Abbazia defence, Botvinnik variation20.0%100.0%
C36KGA, Abbazia defence, modern variation23232.8%44.8%
C39KGA, Allgaier gambit10.0%100.0%
C34KGA, Becker defence5217.3%39.4%
C37KGA, Blachly gambit2520.0%30.0%
C34KGA, Bonsch-Osmolovsky variation5127.5%43.1%
C33KGA, Breyer gambit2040.0%30.0%
C33KGA, Carrera (Basman) gambit3531.4%41.4%
C35KGA, Cunningham defence11121.6%45.0%
C35KGA, Cunningham, Bertin gambit20.0%50.0%
C35KGA, Cunningham, Euwe defence7132.4%50.0%
C34KGA, Fischer defence25023.6%47.4%
C37KGA, Ghulam Kassim gambit10.0%0.0%
C34KGA, Gianutio counter-gambit10.0%0.0%
C38KGA, Hanstein gambit2321.7%41.3%
C33KGA, Keres (Mason-Steinitz) gambit439.3%44.2%
C39KGA, Kieseritsky, Berlin defence6114.8%36.9%
C39KGA, Kieseritsky, Berlin defence, 6.Bc45831.0%44.8%
C39KGA, Kieseritsky, Brentano (Campbell) defence20.0%100.0%
C39KGA, Kieseritsky, Kolisch defence11233.0%49.6%
C39KGA, Kieseritsky, Neumann defence616.7%58.3%
C39KGA, Kieseritsky, Paulsen defence540.0%40.0%
C39KGA, Kieseritsky, Rice gambit2250.0%25.0%
C39KGA, Kieseritsky, Salvio (Rosenthal) defence2055.0%52.5%
C37KGA, King's knight's gambit30.0%33.3%
C33KGA, Lesser bishop's (Petroff-Jaenisch-Tartakower) gambit229.1%45.5%
C37KGA, Lolli gambit (wild Muzio gambit)1100.0%50.0%
C33KGA, Lopez-Gianutio counter-gambit, Hein variation250.0%75.0%
C37KGA, MacDonnell gambit250.0%75.0%
C37KGA, Muzio gambit119.1%13.6%
C38KGA, Philidor gambit40.0%25.0%
C38KGA, Philidor gambit, Schultz variation50.0%20.0%
C37KGA, Quaade gambit137.7%11.5%
C37KGA, Rosentreter gambit333.3%83.3%
C37KGA, Salvio gambit1225.0%45.8%
C37KGA, Salvio gambit, Anderssen counter-attack30.0%33.3%
C34KGA, Schallop defence11421.1%50.9%
C37KGA, Silberschmidt gambit20.0%0.0%
C33KGA, Villemson (Steinitz) gambit728.6%42.9%
C33KGA, bishop's gambit15421.4%52.9%
C33KGA, bishop's gambit, Anderssen variation616.7%75.0%
C33KGA, bishop's gambit, Bledow variation5731.6%45.6%
C33KGA, bishop's gambit, Boden defence1414.3%35.7%
C33KGA, bishop's gambit, Bogolyubov variation4517.8%46.7%
C33KGA, bishop's gambit, Boren-Svenonius variation30.0%66.7%
C33KGA, bishop's gambit, Bryan counter-gambit250.0%25.0%
C33KGA, bishop's gambit, Cozio (Morphy) defence3231.3%40.6%
C33KGA, bishop's gambit, Jaenisch variation12025.8%53.8%
C33KGA, bishop's gambit, Lopez-Gianutio counter-gambit3522.9%31.4%
C33KGA, bishop's gambit, Maurian defence2927.6%48.3%
C33KGA, bishop's gambit, McDonnell attack250.0%75.0%
C33KGA, bishop's gambit, Morphy variation5024.0%48.0%
C33KGA, bishop's gambit, Paulsen attack812.5%43.8%
C33KGA, bishop's gambit, Ruy Lopez defence1050.0%45.0%
C33KGA, bishop's gambit, Steinitz defence8528.2%45.9%
C33KGA, bishop's gambit, classical defence119.1%22.7%
C37KGA, double Muzio gambit10.0%0.0%
C30KGD, 2...Nf66426.6%52.3%
C31KGD, Falkbeer counter-gambit8321.7%49.4%
C31KGD, Falkbeer, 3...e41020.0%50.0%
C31KGD, Falkbeer, 4.d31931.6%68.4%
C32KGD, Falkbeer, 5.de4126.8%50.0%
C32KGD, Falkbeer, Charousek gambit20.0%100.0%
C32KGD, Falkbeer, Charousek variation10.0%0.0%
C32KGD, Falkbeer, Keres variation1100.0%50.0%
C31KGD, Falkbeer, Morphy gambit850.0%62.5%
C31KGD, Falkbeer, Nimzovich variation70.0%42.9%
C32KGD, Falkbeer, Reti variation560.0%50.0%
C31KGD, Falkbeer, Rubinstein variation650.0%58.3%
C32KGD, Falkbeer, Tarrasch variation10.0%100.0%
C31KGD, Falkbeer, Tartakower variation2236.4%72.7%
C32KGD, Falkbeer, main line, 7...Bf5977.8%38.9%
C30KGD, Keene's defence4924.5%49.0%
C30KGD, Mafia defence14325.2%64.3%
C31KGD, Nimzovich counter-gambit6224.2%49.2%
C30KGD, Norwalde variation1428.6%50.0%
C30KGD, classical counter-gambit616.7%58.3%
C30KGD, classical variation24821.8%46.8%
C30KGD, classical, 4.c316926.0%60.9%
C30KGD, classical, Hanham variation250.0%25.0%
C30KGD, classical, Heath variation366.7%33.3%
C30KGD, classical, Marshall attack1127.3%50.0%
C30KGD, classical, Reti variation616.7%75.0%
C30KGD, classical, Soldatenkov variation1323.1%57.7%
C30KGD, classical, Svenonius variation520.0%50.0%
B00KP, Colorado counter1631.3%59.4%
C20KP, Indian opening25227.0%50.0%
C20KP, King's head opening1631.3%59.4%
C20KP, Lopez opening6235.5%45.2%
C20KP, Mengarini's opening8017.5%55.0%
C20KP, Napoleon's opening1540.0%53.3%
B00KP, Nimzovich defence274724.2%57.8%
B00KP, Nimzovich defence, Bogolyubov variation28118.1%56.0%
B00KP, Nimzovich defence, Marshall gambit616.7%41.7%
C20KP, Patzer opening2931.0%56.9%
A50Kevitz-Trajkovich defence122827.5%53.9%
E60King's Indian defence177923.3%53.3%
E61King's Indian defence, 3.Nc3141128.7%54.2%
E72King's Indian with e4 & g34831.3%55.2%
E60King's Indian, 3.Nf3493329.2%55.4%
E60King's Indian, 3.g3242731.2%55.5%
E60King's Indian, 3.g3, counterthrust variation1631.3%46.9%
E70King's Indian, 4.e492625.8%54.7%
E73King's Indian, 5.Be211621.6%49.6%
E90King's Indian, 5.Nf3126323.5%54.4%
E91King's Indian, 6.Be292525.5%60.1%
E92King's Indian, Andersson variation48939.7%54.2%
E60King's Indian, Anti-Gruenfeld14922.8%47.7%
E73King's Indian, Averbakh system95328.9%52.5%
E74King's Indian, Averbakh, 6...c529025.9%62.2%
E75King's Indian, Averbakh, main line5433.3%48.1%
E60King's Indian, Danube gambit1631.3%53.1%
A48King's Indian, East Indian defence171429.5%53.3%
E76King's Indian, Four pawns attack33232.8%59.2%
E77King's Indian, Four pawns attack24833.1%53.2%
E77King's Indian, Four pawns attack, 6.Be2933.3%50.0%
E77King's Indian, Four pawns attack, Florentine gambit4129.3%41.5%
E76King's Indian, Four pawns attack, dynamic line17132.2%50.0%
E79King's Indian, Four pawns attack, main line12845.3%57.0%
E78King's Indian, Four pawns attack, with Be2 and Nf33441.2%50.0%
E92King's Indian, Gligoric-Taimanov system267324.7%57.7%
E91King's Indian, Kazakh variation70329.4%57.5%
E70King's Indian, Kramer system24922.5%53.4%
E90King's Indian, Larsen variation12328.5%55.7%
A48King's Indian, London system113228.5%51.9%
E71King's Indian, Makagonov system (5.h3)95826.4%55.7%
E92King's Indian, Petrosian system20319.2%57.4%
E93King's Indian, Petrosian system, Keres variation2828.6%50.0%
E92King's Indian, Petrosian system, Stein variation122627.3%53.1%
E93King's Indian, Petrosian system, main line24024.2%55.4%
E72King's Indian, Pomar system1553.3%60.0%
E80King's Indian, Saemisch variation56424.5%55.0%
E81King's Indian, Saemisch, 5...O-O242725.4%54.1%
E83King's Indian, Saemisch, 6...Nc612519.2%56.8%
E81King's Indian, Saemisch, Byrne variation8930.3%51.1%
E83King's Indian, Saemisch, Panno formation23023.9%52.4%
E84King's Indian, Saemisch, Panno main line88221.9%52.1%
E83King's Indian, Saemisch, Ruban variation1020.0%50.0%
E82King's Indian, Saemisch, double fianchetto variation16529.7%59.7%
E89King's Indian, Saemisch, orthodox main line8026.3%61.9%
E85King's Indian, Saemisch, orthodox variation7830.8%56.4%
E86King's Indian, Saemisch, orthodox, 7.Nge2 c656623.0%54.9%
E87King's Indian, Saemisch, orthodox, 7.d552719.5%62.9%
E88King's Indian, Saemisch, orthodox, 7.d5 c653430.9%55.5%
E87King's Indian, Saemisch, orthodox, Bronstein variation1127.3%59.1%
E73King's Indian, Semi-Averbakh system5225.0%54.8%
E61King's Indian, Smyslov system15026.7%49.3%
A48King's Indian, Torre attack187729.3%50.1%
E90King's Indian, Zinnowitz variation10429.8%52.4%
E70King's Indian, accelerated Averbakh system13327.1%50.4%
E92King's Indian, classical variation2128.6%47.6%
E62King's Indian, fianchetto variation15728.7%54.5%
E62King's Indian, fianchetto with ...Nc634825.6%56.8%
E67King's Indian, fianchetto with ...Nd720729.0%62.3%
A49King's Indian, fianchetto without c4235828.3%53.9%
E62King's Indian, fianchetto, Kavalek (Bronstein) variation116929.8%58.6%
E62King's Indian, fianchetto, Larsen system33429.0%54.0%
E63King's Indian, fianchetto, Panno variation330628.6%57.1%
E62King's Indian, fianchetto, Simagin variation17128.7%67.5%
E62King's Indian, fianchetto, Uhlmann (Szabo) variation52130.3%58.2%
E66King's Indian, fianchetto, Yugoslav Panno48427.1%55.9%
E64King's Indian, fianchetto, Yugoslav system19624.0%56.9%
E65King's Indian, fianchetto, Yugoslav, 7.O-O24931.3%57.4%
E69King's Indian, fianchetto, classical main line126430.5%60.0%
E67King's Indian, fianchetto, classical variation102031.7%55.6%
E68King's Indian, fianchetto, classical variation, 8.e4214129.1%58.8%
E62King's Indian, fianchetto, lesser Simagin (Spassky) variation46924.5%58.3%
E94King's Indian, orthodox variation192731.4%57.0%
E94King's Indian, orthodox, 7...Nbd7262826.9%56.9%
E95King's Indian, orthodox, 7...Nbd7, 8.Re198926.8%56.3%
E96King's Indian, orthodox, 7...Nbd7, main line21632.9%59.0%
E97King's Indian, orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation)877025.2%55.5%
E98King's Indian, orthodox, Aronin-Taimanov, 9.Ne1320721.4%59.1%
E99King's Indian, orthodox, Aronin-Taimanov, Benko attack4231.0%44.0%
E97King's Indian, orthodox, Aronin-Taimanov, bayonet attack317128.7%57.6%
E99King's Indian, orthodox, Aronin-Taimanov, main line13422.4%53.7%
E94King's Indian, orthodox, Donner variation23727.8%56.1%
C30King's gambit19728.9%56.6%
C33King's gambit accepted1118.2%54.5%
C40King's knight opening616.7%41.7%
C34King's knight's gambit8315.7%47.6%
C38King's knight's gambit911.1%50.0%
C39King's knight's gambit20.0%50.0%
C20King's pawn game29320.1%51.7%
C44King's pawn game7126.8%47.2%
C50King's pawn game39123.0%54.0%
B00King's pawn opening310626.1%53.7%
C44Konstantinopolsky opening2416.7%45.8%
A00Lasker simul special14027.9%46.8%
C40Latvian counter-gambit16025.6%61.6%
C40Latvian gambit, 3.Bc4633.3%66.7%
C40Latvian, Fraser defence147.1%53.6%
C40Latvian, Polerio variation60.0%33.3%
C00Lengfellner system10827.8%61.1%
D00Levitsky attack (Queen's bishop attack)276625.0%49.7%
A00Mieses opening50918.5%52.8%
A40Modern defence226425.0%56.8%
A41Modern defence10728.0%55.1%
A42Modern defence, Averbakh system114429.4%57.1%
A42Modern defence, Averbakh system, Kotov variation83024.0%57.8%
A42Modern defence, Averbakh system, Randspringer variation728.6%28.6%
A03Mujannah opening70.0%42.9%
D70Neo-Gruenfeld (Kemeri) defence21940.6%55.5%
D70Neo-Gruenfeld defence48823.2%51.3%
D73Neo-Gruenfeld, 5.Nf3126340.3%53.2%
D71Neo-Gruenfeld, 5.cd23739.7%55.7%
D72Neo-Gruenfeld, 5.cd, main line38631.1%52.1%
D77Neo-Gruenfeld, 6.O-O213033.4%53.7%
D78Neo-Gruenfeld, 6.O-O c6211732.5%53.7%
D79Neo-Gruenfeld, 6.O-O, main line98836.6%53.5%
D74Neo-Gruenfeld, 6.cd Nxd5, 7.O-O59633.6%58.1%
D76Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb6142433.8%55.9%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc347441.8%54.0%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.dc4731.9%60.6%
E00Neo-Indian (Seirawan) attack58524.1%49.5%
E20Nimzo-Indian defence28329.7%46.6%
E40Nimzo-Indian, 4.e324126.6%53.5%
E46Nimzo-Indian, 4.e3 O-O19836.9%51.3%
E47Nimzo-Indian, 4.e3 O-O, 5.Bd390237.0%55.4%
E48Nimzo-Indian, 4.e3 O-O, 5.Bd3 d570732.5%52.1%
E41Nimzo-Indian, 4.e3 c586333.8%51.0%
E42Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein)210531.7%55.3%
E51Nimzo-Indian, 4.e3 e8g8, 5.Nf3 d7d529734.0%50.3%
E50Nimzo-Indian, 4.e3 e8g8, 5.Nf3, without ...d515232.2%57.6%
E49Nimzo-Indian, 4.e3, Botvinnik system45129.5%48.2%
E45Nimzo-Indian, 4.e3, Bronstein (Byrne) variation72031.0%54.5%
E53Nimzo-Indian, 4.e3, Gligoric system with 7...Nbd713339.1%54.9%
E54Nimzo-Indian, 4.e3, Gligoric system with 7...dc241435.9%53.8%
E55Nimzo-Indian, 4.e3, Gligoric system, Bronstein variation301934.7%53.4%
E54Nimzo-Indian, 4.e3, Gligoric system, Smyslov variation5232.7%56.7%
E53Nimzo-Indian, 4.e3, Keres variation12233.6%47.1%
E51Nimzo-Indian, 4.e3, Ragozin variation5450.0%58.3%
E40Nimzo-Indian, 4.e3, Taimanov variation12326.0%52.0%
E59Nimzo-Indian, 4.e3, main line211830.8%54.1%
E52Nimzo-Indian, 4.e3, main line with ...b6100532.5%52.7%
E53Nimzo-Indian, 4.e3, main line with ...c5172636.8%52.3%
E56Nimzo-Indian, 4.e3, main line with 7...Nc6134730.8%54.2%
E58Nimzo-Indian, 4.e3, main line with 8...Bxc3298928.9%48.7%
E57Nimzo-Indian, 4.e3, main line with 8...dc and 9...cd3026.7%70.0%
E43Nimzo-Indian, Fischer variation64730.1%54.8%
E44Nimzo-Indian, Fischer variation, 5.Ne294225.5%56.6%
E20Nimzo-Indian, Kmoch variation116825.1%54.0%
E30Nimzo-Indian, Leningrad variation50230.5%51.1%
E30Nimzo-Indian, Leningrad, ...b5 gambit3842.1%42.1%
E31Nimzo-Indian, Leningrad, main line21921.5%45.9%
E20Nimzo-Indian, Mikenas attack1926.3%34.2%
E46Nimzo-Indian, Reshevsky variation151628.4%52.4%
E20Nimzo-Indian, Romanishin-Kasparov (Steiner) system80828.6%49.6%
E24Nimzo-Indian, Saemisch variation22032.7%49.5%
E25Nimzo-Indian, Saemisch variation12636.5%53.2%
E26Nimzo-Indian, Saemisch variation14826.4%49.0%
E27Nimzo-Indian, Saemisch variation5131.4%51.0%
E28Nimzo-Indian, Saemisch variation10731.8%54.2%
E24Nimzo-Indian, Saemisch, Botvinnik variation3327.3%47.0%
E29Nimzo-Indian, Saemisch, Capablanca variation13040.0%50.8%
E25Nimzo-Indian, Saemisch, Keres variation42729.5%51.8%
E26Nimzo-Indian, Saemisch, O'Kelly variation4126.8%40.2%
E25Nimzo-Indian, Saemisch, Romanovsky variation17642.0%48.9%
E29Nimzo-Indian, Saemisch, main line13630.9%58.8%
E46Nimzo-Indian, Simagin variation11529.6%48.7%
E22Nimzo-Indian, Spielmann variation16235.2%54.0%
E23Nimzo-Indian, Spielmann, 4...c5, 5.dc Nc63423.5%44.1%
E23Nimzo-Indian, Spielmann, Karlsbad variation1729.4%38.2%
E23Nimzo-Indian, Spielmann, San Remo variation650.0%58.3%
E32Nimzo-Indian, classical variation896532.6%53.1%
E33Nimzo-Indian, classical, 4...Nc614223.2%61.6%
E38Nimzo-Indian, classical, 4...c580731.2%56.6%
E32Nimzo-Indian, classical, Adorjan gambit21027.6%55.7%
E36Nimzo-Indian, classical, Botvinnik variation1533.3%56.7%
E33Nimzo-Indian, classical, Milner-Barry (Zurich) variation64827.2%52.9%
E34Nimzo-Indian, classical, Noa variation86933.7%52.2%
E36Nimzo-Indian, classical, Noa variation, 5.a350632.8%55.5%
E35Nimzo-Indian, classical, Noa variation, 5.cd ed101233.8%49.6%
E36Nimzo-Indian, classical, Noa variation, main line60.0%33.3%
E37Nimzo-Indian, classical, Noa variation, main line, 7.Qc215632.1%59.6%
E39Nimzo-Indian, classical, Pirc variation140532.6%56.3%
E37Nimzo-Indian, classical, San Remo variation1241.7%54.2%
E41Nimzo-Indian, e3, Huebner variation97325.3%49.1%
E21Nimzo-Indian, three knights variation368129.1%51.8%
E21Nimzo-Indian, three knights, Euwe variation837.5%56.3%
E21Nimzo-Indian, three knights, Korchnoi variation4434.1%60.2%
A01Nimzovich-Larsen attack95526.1%51.2%
A01Nimzovich-Larsen attack, Dutch variation16721.0%50.6%
A01Nimzovich-Larsen attack, English variation42427.8%51.2%
A01Nimzovich-Larsen attack, Indian variation78426.5%53.3%
A01Nimzovich-Larsen attack, Polish variation2835.7%53.6%
A01Nimzovich-Larsen attack, classical variation188527.0%48.6%
A01Nimzovich-Larsen attack, modern variation304230.6%49.9%
A01Nimzovich-Larsen attack, symmetrical variation61830.3%49.8%
B06Norwegian defence250.0%75.0%
A00Novosibirsk opening258.0%48.0%
A43Old Benoni defence271826.2%55.6%
A44Old Benoni defence6225.8%66.1%
A43Old Benoni, Franco-Benoni defence17926.3%62.8%
A43Old Benoni, Mujannah formation13920.9%63.7%
A43Old Benoni, Schmid's system2630.8%50.0%
A41Old Indian defence362425.7%50.7%
A53Old Indian defence187129.2%55.3%
A54Old Indian, Dus-Khotimirsky variation911.1%72.2%
A53Old Indian, Janowski variation74420.3%58.7%
A41Old Indian, Tartakower (Wade) variation357424.5%58.6%
A54Old Indian, Ukrainian variation20830.8%51.4%
A54Old Indian, Ukrainian variation, 4.Nf332526.2%54.3%
A55Old Indian, main line127927.0%62.5%
B00Owen defence88026.4%56.6%
A45Paleface attack19119.9%41.4%
C42Petrov three knights game59728.1%54.4%
C42Petrov's defence96025.1%54.1%
C42Petrov, Cochrane gambit4314.0%46.5%
C42Petrov, Cozio (Lasker) attack29332.8%51.5%
C42Petrov, Damiano variation4330.2%54.7%
C42Petrov, French attack1513.3%66.7%
C42Petrov, Italian variation15719.1%51.0%
C42Petrov, Kaufmann attack30731.9%56.7%
C42Petrov, Nimzovich attack73433.4%54.0%
C42Petrov, Paulsen attack29327.6%46.6%
C43Petrov, Urusov gambit468.7%45.7%
C42Petrov, classical attack238830.8%56.8%
C42Petrov, classical attack, Berger variation1936.8%55.3%
C42Petrov, classical attack, Chigorin variation122934.4%54.2%
C42Petrov, classical attack, Jaenisch variation396734.9%56.6%
C42Petrov, classical attack, Krause variation1100.0%50.0%
C42Petrov, classical attack, Marshall variation246329.5%55.3%
C42Petrov, classical attack, Mason variation9639.6%63.5%
C42Petrov, classical attack, Tarrasch variation933.3%83.3%
C42Petrov, classical attack, close variation20929.7%54.5%
C43Petrov, modern (Steinitz) attack15724.2%60.5%
C43Petrov, modern attack, Bardeleben variation1717.6%67.6%
C43Petrov, modern attack, Steinitz variation1127.3%59.1%
C43Petrov, modern attack, Symmetrical variation552031.4%53.8%
C43Petrov, modern attack, Trifunovic variation8534.1%51.2%
C43Petrov, modern attack, main line51431.7%57.9%
C41Philidor's defence58830.1%55.9%
C41Philidor, Boden variation1910.5%52.6%
C41Philidor, Hanham variation8537.6%60.0%
C41Philidor, Hanham, Delmar variation850.0%75.0%
C41Philidor, Hanham, Kmoch variation20.0%50.0%
C41Philidor, Hanham, Krause variation3030.0%68.3%
C41Philidor, Hanham, Schlechter variation6826.5%61.8%
C41Philidor, Hanham, Steiner variation3330.3%66.7%
C41Philidor, Improved Hanham variation130327.2%56.5%
C41Philidor, Larsen variation7724.7%68.2%
C41Philidor, Lopez counter-gambit1513.3%80.0%
C41Philidor, Nimzovich (Jaenisch) variation9231.5%48.4%
C41Philidor, Nimzovich variation3138.7%54.8%
C41Philidor, Nimzovich, Klein variation128.3%62.5%
C41Philidor, Nimzovich, Larobok variation5141.2%34.3%
C41Philidor, Nimzovich, Rellstab variation10332.0%63.6%
C41Philidor, Nimzovich, Sokolsky variation520.0%50.0%
C41Philidor, Nimzovich, Sozin variation4517.8%48.9%
C41Philidor, Paulsen attack30.0%100.0%
C41Philidor, Philidor counter-gambit3016.7%51.7%
C41Philidor, Philidor counter-gambit, Zukertort variation1931.6%57.9%
C41Philidor, Philidor counter-gambit, del Rio attack540.0%60.0%
C41Philidor, Steinitz variation1631.3%53.1%
C41Philidor, exchange variation148226.0%58.1%
B07Pirc defence308425.6%54.6%
B07Pirc, 150 attack66628.2%53.5%
B09Pirc, Austrian attack81128.0%58.6%
B09Pirc, Austrian attack, 6.Bd3438130.6%57.6%
B09Pirc, Austrian attack, 6.Be381125.4%55.5%
B09Pirc, Austrian attack, 6.e531228.8%59.3%
B09Pirc, Austrian attack, Ljubojevic variation1723.5%70.6%
B09Pirc, Austrian attack, dragon formation127130.9%53.9%
B07Pirc, Byrne variation45624.3%55.8%
B07Pirc, Chinese variation20.0%50.0%
B07Pirc, Holmov system4729.8%53.2%
B07Pirc, Sveshnikov system123426.7%51.9%
B07Pirc, Ufimtsev-Pytel variation89423.6%56.1%
B07Pirc, bayonet (Mariotti) attack5320.8%53.8%
B08Pirc, classical (two knights) system96828.7%56.2%
B08Pirc, classical system, 5.Be2520831.7%58.4%
B08Pirc, classical, h3 system69829.9%55.9%
A00Polish (Sokolsky) opening164428.0%50.5%
A40Polish defence35925.3%57.5%
A00Polish, Outflank variation29425.2%49.3%
A00Polish, Tuebingen variation7321.9%52.1%
C44Ponziani counter-gambit23720.3%52.3%
C44Ponziani counter-gambit, Cordel variation10.0%100.0%
C44Ponziani counter-gambit, Schmidt attack10.0%0.0%
C44Ponziani opening19525.1%56.2%
C44Ponziani, Caro variation12733.9%50.8%
C44Ponziani, Jaenisch counter-attack74331.6%46.9%
C44Ponziani, Leonhardt variation6338.1%49.2%
C44Ponziani, Reti variation166.3%53.1%
C44Ponziani, Romanishin variation1060.0%60.0%
C44Ponziani, Steinitz variation11538.3%53.9%
A42Pterodactyl defence111527.3%61.6%
D21QGA, 3.Nf3130125.7%55.6%
D20QGA, 3.e4416029.1%56.0%
D26QGA, 4...e686732.2%53.0%
D24QGA, 4.Nc333031.8%54.1%
D25QGA, 4.e357729.3%57.8%
D22QGA, Alekhine defence43734.8%58.4%
D22QGA, Alekhine defence, Alatortsev variation1145.5%68.2%
D21QGA, Alekhine defense, Borisenko-Furman variation4528.9%38.9%
D24QGA, Bogolyubov variation28416.5%47.4%
D21QGA, Ericson variation2842.9%53.6%
D25QGA, Flohr variation8229.3%63.4%
D22QGA, Haberditz variation27234.6%58.5%
D25QGA, Janowsky-Larsen variation76529.4%56.1%
D20QGA, Linares variation6929.0%52.2%
D23QGA, Mannheim variation55732.7%54.2%
D20QGA, Schwartz defence2100.0%50.0%
D25QGA, Smyslov variation20831.3%57.9%
D26QGA, classical variation137734.5%54.6%
D26QGA, classical variation, 6.O-O45135.0%58.3%
D27QGA, classical, 6...a6554136.3%53.8%
D28QGA, classical, 7...b527834.2%55.2%
D28QGA, classical, 7.Qe213740.9%56.2%
D29QGA, classical, 8...Bb779431.7%47.9%
D26QGA, classical, Furman variation560.0%50.0%
D27QGA, classical, Geller variation8632.6%43.0%
D27QGA, classical, Rubinstein variation423234.4%55.4%
D29QGA, classical, Smyslov variation9628.1%54.7%
D26QGA, classical, Steinitz variation14946.3%59.4%
D30QGD303432.1%52.1%
D51QGD3818.4%64.5%
D52QGD46130.4%56.4%
D30QGD Slav121831.9%52.8%
D15QGD Slav accepted35826.8%50.3%
D16QGD Slav accepted, Alapin variation29721.9%70.5%
D10QGD Slav defence557930.1%54.4%
D10QGD Slav defence, Alekhine variation47720.8%55.9%
D10QGD Slav defence, exchange variation335730.8%52.5%
D11QGD Slav, 3.Nf3572728.7%54.5%
D15QGD Slav, 4.Nc3417829.0%52.6%
D11QGD Slav, 4.e3575629.7%55.3%
D12QGD Slav, 4.e3 Bf5929128.2%54.4%
D15QGD Slav, 5.e3 (Alekhine variation)36923.6%49.5%
D12QGD Slav, Amsterdam variation7335.6%47.9%
D11QGD Slav, Breyer variation27728.9%53.8%
D17QGD Slav, Carlsbad variation69432.4%52.7%
D17QGD Slav, Czech defence92435.4%54.1%
D18QGD Slav, Dutch variation93931.8%57.3%
D19QGD Slav, Dutch variation272929.4%56.4%
D19QGD Slav, Dutch variation, main line51034.3%52.3%
D18QGD Slav, Dutch, Lasker variation3112.9%67.7%
D17QGD Slav, Krause attack85826.8%58.0%
D12QGD Slav, Landau variation1100.0%50.0%
D15QGD Slav, Schlechter variation34831.0%55.7%
D30QGD Slav, Semmering variation27433.6%50.7%
D15QGD Slav, Slav gambit39525.1%46.7%
D16QGD Slav, Smyslov variation13726.3%59.1%
D16QGD Slav, Soultanbeieff variation26238.5%56.7%
D16QGD Slav, Steiner variation38928.3%59.1%
D15QGD Slav, Suechting variation9419.1%52.1%
D15QGD Slav, Tolush-Geller gambit36025.6%43.6%
D17QGD Slav, Wiesbaden variation68827.6%58.4%
D10QGD Slav, Winawer counter-gambit32128.3%56.2%
D12QGD Slav, exchange variation45525.1%53.2%
D13QGD Slav, exchange variation144032.4%53.4%
D14QGD Slav, exchange variation, 6.Bf4 Bf583831.6%51.1%
D14QGD Slav, exchange, Trifunovic variation22839.9%51.5%
D43QGD semi-Slav2244929.1%53.6%
D45QGD semi-Slav, 5...Nd7135427.0%51.5%
D44QGD semi-Slav, 5.Bg5 dc44533.3%49.0%
D45QGD semi-Slav, 5.e3147528.6%56.9%
D46QGD semi-Slav, 6.Bd311128.8%51.4%
D47QGD semi-Slav, 7.Bc485027.2%57.9%
D46QGD semi-Slav, Bogolyubov variation44830.1%56.6%
D44QGD semi-Slav, Botvinnik system (anti-Meran)38324.5%48.0%
D46QGD semi-Slav, Chigorin defence86332.8%53.9%
D44QGD semi-Slav, Ekstrom variation5422.2%38.9%
D43QGD semi-Slav, Hastings variation825.0%25.0%
D48QGD semi-Slav, Meran37623.1%47.7%
D47QGD semi-Slav, Meran variation323931.5%53.0%
D48QGD semi-Slav, Meran, 8...a6716831.0%48.8%
D49QGD semi-Slav, Meran, Blumenfeld variation56729.8%51.2%
D48QGD semi-Slav, Meran, Pirc variation3528.6%62.9%
D49QGD semi-Slav, Meran, Rabinovich variation11340.7%61.1%
D49QGD semi-Slav, Meran, Rellstab attack3633.3%50.0%
D48QGD semi-Slav, Meran, Reynolds' variation138229.2%56.0%
D49QGD semi-Slav, Meran, Sozin variation42140.1%49.0%
D49QGD semi-Slav, Meran, Stahlberg variation9032.2%51.7%
D47QGD semi-Slav, Meran, Wade variation2212729.3%52.9%
D48QGD semi-Slav, Meran, old main line21034.3%56.7%
D46QGD semi-Slav, Romih variation23827.7%64.3%
D45QGD semi-Slav, Rubinstein (anti-Meran) system3135.5%59.7%
D45QGD semi-Slav, Stoltz variation4133730.5%52.5%
D45QGD semi-Slav, accelerated Meran (Alekhine variation)386432.3%53.7%
D44QGD semi-Slav, anti-Meran gambit203326.2%60.0%
D44QGD semi-Slav, anti-Meran, Alatortsev system5111.8%60.8%
D44QGD semi-Slav, anti-Meran, Lilienthal variation48621.2%58.7%
D44QGD semi-Slav, anti-Meran, Szabo variation22820.2%40.4%
D47QGD semi-Slav, neo-Meran (Lundin variation)73531.3%56.6%
D45QGD semi-Slav, stonewall defence2817.9%66.1%
D35QGD, 3...Nf620832.7%44.2%
D31QGD, 3.Nc3106428.1%54.9%
D50QGD, 4.Bg533030.9%56.7%
D53QGD, 4.Bg5 Be772636.4%55.8%
D53QGD, 4.Bg5 Be7, 5.e3 O-O3237.5%56.3%
D51QGD, 4.Bg5 Nbd712929.5%55.8%
D37QGD, 4.Nf3673332.5%53.2%
D51QGD, 5...c68928.1%59.0%
D55QGD, 6.Nf336532.6%58.8%
D31QGD, Alapin variation4415.9%42.0%
D08QGD, Albin counter-gambit25135.9%53.0%
D09QGD, Albin counter-gambit, 5.g314533.1%57.2%
D08QGD, Albin counter-gambit, Alapin variation3339.4%59.1%
D08QGD, Albin counter-gambit, Balogh variation10.0%0.0%
D08QGD, Albin counter-gambit, Janowski variation10.0%100.0%
D08QGD, Albin counter-gambit, Krenosz variation250.0%75.0%
D51QGD, Alekhine variation1421.4%53.6%
D54QGD, Anti-neo-orthodox variation4829.2%52.1%
D50QGD, Been-Koomen variation1631.3%46.9%
D52QGD, Cambridge Springs defence8948.3%48.9%
D52QGD, Cambridge Springs defence, 7.cd49131.8%57.8%
D52QGD, Cambridge Springs defence, Argentine variation3324.2%48.5%
D52QGD, Cambridge Springs defence, Bogoljubow variation70530.1%54.2%
D52QGD, Cambridge Springs defence, Capablanca variation4537.8%52.2%
D52QGD, Cambridge Springs defence, Rubinstein variation22631.9%55.3%
D52QGD, Cambridge Springs defence, Yugoslav variation134027.0%58.4%
D50QGD, Canal (Venice) variation30.0%33.3%
D51QGD, Capablanca anti-Cambridge Springs variation1631.3%59.4%
D30QGD, Capablanca variation6119.7%47.5%
D30QGD, Capablanca-Duras variation82328.3%52.4%
D31QGD, Charousek (Petrosian) variation224129.2%53.3%
D07QGD, Chigorin defence255127.2%57.6%
D07QGD, Chigorin defence, Janowski variation65424.2%61.8%
D06QGD, Grau (Sahovic) defence169124.6%55.9%
D35QGD, Harrwitz attack12235.2%51.2%
D30QGD, Hastings variation75635.6%50.7%
D31QGD, Janowski variation21737.8%54.8%
D56QGD, Lasker defence54530.1%52.5%
D57QGD, Lasker defence, Bernstein variation2937.9%50.0%
D56QGD, Lasker defence, Teichmann variation15233.6%60.2%
D57QGD, Lasker defence, main line5435.2%58.3%
D53QGD, Lasker variation922.2%66.7%
D51QGD, Manhattan variation2429.2%56.3%
D06QGD, Marshall defence37228.2%59.8%
D55QGD, Neo-orthodox variation1457.1%64.3%
D55QGD, Neo-orthodox variation, 7.Bh455531.7%53.7%
D55QGD, Neo-orthodox variation, 7.Bxf632637.1%51.4%
D60QGD, Orthodox defence37531.2%58.0%
D63QGD, Orthodox defence11526.1%57.4%
D62QGD, Orthodox defence, 7.Qc2 c5, 8.cd (Rubinstein)28142.3%50.4%
D63QGD, Orthodox defence, 7.Rc135234.1%54.0%
D66QGD, Orthodox defence, Bd3 line39130.4%55.4%
D67QGD, Orthodox defence, Bd3 line6642.4%51.5%
D67QGD, Orthodox defence, Bd3 line, 11.O-O18631.2%62.4%
D67QGD, Orthodox defence, Bd3 line, Alekhine variation11448.2%63.6%
D67QGD, Orthodox defence, Bd3 line, Capablanca freeing manoevre10.0%100.0%
D67QGD, Orthodox defence, Bd3 line, Janowski variation757.1%42.9%
D66QGD, Orthodox defence, Bd3 line, fianchetto variation3727.0%64.9%
D60QGD, Orthodox defence, Botvinnik variation25036.8%52.8%
D63QGD, Orthodox defence, Capablanca variation60.0%66.7%
D63QGD, Orthodox defence, Pillsbury attack2744.4%40.7%
D60QGD, Orthodox defence, Rauzer variation2828.6%57.1%
D64QGD, Orthodox defence, Rubinstein attack (with Rc1)18741.7%57.8%
D64QGD, Orthodox defence, Rubinstein attack, Gruenfeld variation11038.2%49.1%
D64QGD, Orthodox defence, Rubinstein attack, Karlsbad variation3036.7%41.7%
D64QGD, Orthodox defence, Rubinstein attack, Wolf variation3540.0%54.3%
D65QGD, Orthodox defence, Rubinstein attack, main line2334.8%39.1%
D61QGD, Orthodox defence, Rubinstein variation55130.1%53.7%
D63QGD, Orthodox defence, Swiss (Henneberger) variation21729.0%50.9%
D63QGD, Orthodox defence, Swiss, Karlsbad variation30529.2%52.3%
D68QGD, Orthodox defence, classical variation14136.2%55.0%
D68QGD, Orthodox defence, classical, 13.d1b1 (Maroczy)771.4%64.3%
D68QGD, Orthodox defence, classical, 13.d1c2 (Vidmar)8536.5%58.2%
D69QGD, Orthodox defence, classical, 13.de2458.3%50.0%
D55QGD, Petrosian variation47139.1%52.9%
D55QGD, Pillsbury attack30.0%33.3%
D38QGD, Ragozin variation838232.3%53.7%
D39QGD, Ragozin, Vienna variation156136.6%50.5%
D51QGD, Rochlin variation10.0%0.0%
D50QGD, Semi-Tarrasch3452.9%61.8%
D40QGD, Semi-Tarrasch defence101333.3%51.5%
D40QGD, Semi-Tarrasch defence, Pillsbury variation5040.0%52.0%
D41QGD, Semi-Tarrasch with e336036.9%54.6%
D41QGD, Semi-Tarrasch, 5.cd101136.7%57.4%
D42QGD, Semi-Tarrasch, 7.Bd369836.7%57.7%
D41QGD, Semi-Tarrasch, Kmoch variation3560.0%58.6%
D50QGD, Semi-Tarrasch, Krause variation366.7%33.3%
D50QGD, Semi-Tarrasch, Primitive Pillsbury variation2528.0%38.0%
D41QGD, Semi-Tarrasch, San Sebastian variation8025.0%68.8%
D40QGD, Semi-Tarrasch, symmetrical variation7733.8%49.4%
D30QGD, Spielmann variation540.0%80.0%
D30QGD, Stonewall variation333.3%83.3%
D32QGD, Tarrasch defence44831.5%55.2%
D32QGD, Tarrasch defence, 4.cd ed3225.0%50.0%
D32QGD, Tarrasch defence, Marshall gambit2138.1%52.4%
D32QGD, Tarrasch defence, Tarrasch gambit728.6%42.9%
D34QGD, Tarrasch, Bogolyubov variation742.9%21.4%
D33QGD, Tarrasch, Folkestone (Swedish) variation6737.3%57.5%
D33QGD, Tarrasch, Prague variation14032.9%60.0%
D34QGD, Tarrasch, Prague variation, 7...Be749431.0%59.2%
D34QGD, Tarrasch, Prague variation, 9.Bg5126137.8%57.3%
D34QGD, Tarrasch, Prague variation, Normal position131335.0%57.9%
D34QGD, Tarrasch, Reti variation6439.1%55.5%
D33QGD, Tarrasch, Schlechter-Rubinstein system1421.4%46.4%
D33QGD, Tarrasch, Schlechter-Rubinstein system, Rey Ardid variation1100.0%50.0%
D34QGD, Tarrasch, Stoltz variation20.0%100.0%
D33QGD, Tarrasch, Wagner variation2828.6%60.7%
D32QGD, Tarrasch, von Hennig-Schara gambit8630.2%58.1%
D58QGD, Tartakower (Makagonov-Bondarevsky) system1338732.8%52.6%
D59QGD, Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd557437.5%51.7%
D59QGD, Tartakower variation20446.1%41.2%
D30QGD, Vienna variation125238.5%53.0%
D37QGD, classical variation (5.Bf4)848933.0%53.6%
D35QGD, exchange variation39532.2%55.6%
D35QGD, exchange, Saemisch variation31528.6%53.7%
D35QGD, exchange, chameleon variation1827.8%63.9%
D35QGD, exchange, positional line277627.9%53.3%
D35QGD, exchange, positional line, 5...c6193928.1%54.7%
D36QGD, exchange, positional line, 6.Qc246933.3%51.6%
D31QGD, semi-Slav135531.1%54.1%
D31QGD, semi-Slav, Abrahams variation87830.3%45.0%
D31QGD, semi-Slav, Junge variation3520.0%61.4%
D31QGD, semi-Slav, Koomen variation560.0%50.0%
D31QGD, semi-Slav, Marshall gambit311328.7%55.1%
D31QGD, semi-Slav, Noteboom variation77727.8%52.4%
D06QGD, symmetrical (Austrian) defence11829.7%57.2%
C40QP counter-gambit (elephant gambit)20018.0%63.5%
C40QP counter-gambit, Maroczy gambit7125.4%62.0%
D06Queen's Gambit2119.0%57.1%
A50Queen's Indian accelerated35329.5%57.5%
A47Queen's Indian defence99728.2%53.5%
E12Queen's Indian defence53729.2%50.4%
E12Queen's Indian, 4.Nc3709529.2%52.6%
E12Queen's Indian, 4.Nc3, Botvinnik variation11428.9%49.6%
E13Queen's Indian, 4.Nc3, main line37225.5%55.8%
E14Queen's Indian, 4.e3288230.0%51.9%
E15Queen's Indian, 4.g3189741.1%55.2%
E15Queen's Indian, 4.g3 Bb727629.3%54.5%
E17Queen's Indian, 5.Bg2 Be79533.7%49.5%
E14Queen's Indian, Averbakh variation933.3%38.9%
E15Queen's Indian, Buerger variation3528.6%51.4%
E16Queen's Indian, Capablanca variation43033.3%57.6%
E17Queen's Indian, Euwe variation10635.8%60.4%
A47Queen's Indian, Marienbad system14930.2%50.0%
A47Queen's Indian, Marienbad system, Berg variation922.2%55.6%
E12Queen's Indian, Miles variation148131.5%53.4%
E15Queen's Indian, Nimzovich variation (exaggerated fianchetto)3321029.5%55.0%
E17Queen's Indian, Opovcensky variation140629.4%58.2%
E12Queen's Indian, Petrosian system1151331.9%53.4%
E16Queen's Indian, Riumin variation43332.1%55.3%
E15Queen's Indian, Rubinstein variation13122.9%52.7%
E16Queen's Indian, Yates variation85931.1%59.1%
E17Queen's Indian, anti-Queen's Indian system29834.6%54.2%
E17Queen's Indian, old main line, 6.O-O101531.2%56.5%
E18Queen's Indian, old main line, 7.Nc3317133.2%56.3%
E19Queen's Indian, old main line, 9.Qxc3174633.6%55.0%
A41Queen's Pawn498623.4%56.2%
D02Queen's bishop game368128.5%51.4%
D20Queen's gambit accepted208030.7%55.4%
D23Queen's gambit accepted18129.8%49.7%
D30Queen's gambit declined717631.0%53.5%
A40Queen's pawn576225.9%53.6%
A45Queen's pawn game560126.4%51.4%
A46Queen's pawn game649727.7%54.0%
A50Queen's pawn game210729.0%55.6%
D00Queen's pawn game225725.8%51.1%
D02Queen's pawn game1511927.7%52.9%
D04Queen's pawn game257130.7%53.0%
D05Queen's pawn game229129.6%52.9%
E00Queen's pawn game149627.8%53.9%
E10Queen's pawn game734131.4%54.5%
D02Queen's pawn game, Chigorin variation181125.5%54.9%
D02Queen's pawn game, Krause variation86033.6%51.5%
D05Queen's pawn game, Rubinstein (Colle-Zukertort) variation79232.4%55.7%
D05Queen's pawn game, Zukertort variation4332.6%55.8%
A45Queen's pawn, Bronstein gambit1711.8%47.1%
A40Queen's pawn, Charlick (Englund) gambit812.5%68.8%
D00Queen's pawn, Chigorin variation157022.2%51.7%
A40Queen's pawn, English defence68621.7%56.6%
A40Queen's pawn, Franco-Indian (Keres) defence388228.2%55.5%
A40Queen's pawn, Keres defence407327.3%55.7%
A40Queen's pawn, Lundin (Kevitz-Mikenas) defence87226.9%56.6%
D00Queen's pawn, Mason variation210925.4%52.0%
D00Queen's pawn, Mason variation, Steinitz counter-gambit63830.3%50.2%
E60Queen's pawn, Mengarini attack14124.8%50.7%
A46Queen's pawn, Torre attack144426.8%52.1%
A46Queen's pawn, Torre attack, Wagner gambit2920.7%37.9%
A46Queen's pawn, Yusupov-Rubinstein system133730.5%51.2%
D00Queen's pawn, stonewall attack10627.4%48.6%
A09Reti accepted134727.5%53.2%
A09Reti accepted, Keres variation12523.2%59.6%
A04Reti opening1602728.3%53.0%
A05Reti opening1039328.9%52.5%
A06Reti opening353927.1%53.2%
A09Reti opening108527.0%53.5%
A04Reti v Dutch250126.6%56.9%
A05Reti, King's Indian attack237629.5%55.6%
A07Reti, King's Indian attack345933.9%52.9%
A08Reti, King's Indian attack121530.5%54.7%
A07Reti, King's Indian attack (Barcza system)1074129.9%53.0%
A07Reti, King's Indian attack (with ...c5)43825.3%48.5%
A08Reti, King's Indian attack, French variation117030.9%50.9%
A07Reti, King's Indian attack, Keres variation78930.9%52.2%
A07Reti, King's Indian attack, Pachman system25423.2%52.2%
A05Reti, King's Indian attack, Reti-Smyslov variation15127.8%50.3%
A05Reti, King's Indian attack, Spassky's variation86729.5%53.1%
A07Reti, King's Indian attack, Yugoslav variation515831.2%53.8%
A04Reti, Lisitsin gambit deferred6020.0%43.3%
A06Reti, Nimzovich-Larsen attack424531.3%51.2%
A04Reti, Pirc-Lisitsin gambit16422.0%59.8%
A04Reti, Wade defence540.0%80.0%
A09Reti, advance variation170225.4%47.5%
A06Reti, old Indian attack32824.4%52.1%
B00Reversed Grob (Borg/Basman defence/macho Grob)18816.5%54.5%
D01Richter-Veresov attack132026.7%46.3%
D01Richter-Veresov attack, Richter variation7040.0%42.9%
D01Richter-Veresov attack, Veresov variation5819.0%54.3%
B06Robatsch (modern) defence1056729.3%56.4%
B06Robatsch defence137328.6%58.8%
B07Robatsch defence, Geller's system157629.9%57.0%
B06Robatsch defence, Gurgenidze variation93923.1%63.4%
B06Robatsch defence, Pseudo-Austrian attack103425.0%59.0%
A41Robatsch defence, Rossolimo variation18627.4%54.0%
B06Robatsch defence, Two knights variation60630.4%58.1%
B06Robatsch defence, Two knights, Suttles variation249134.3%58.3%
B06Robatsch defence, three pawns attack10016.0%55.0%
C50Rousseau gambit50.0%60.0%
C70Ruy Lopez7828.2%53.8%
C60Ruy Lopez (Spanish opening)16422.6%52.7%
C78Ruy Lopez, ...b5 & ...d610027.0%47.5%
C78Ruy Lopez, 5.O-O295131.3%54.7%
C70Ruy Lopez, Alapin's defence deferred70.0%42.9%
C77Ruy Lopez, Anderssen variation143130.1%49.9%
C78Ruy Lopez, Archangelsk (counterthrust) variation395529.1%54.1%
C65Ruy Lopez, Berlin defence547829.5%51.5%
C65Ruy Lopez, Berlin defence, 4.O-O22426.8%62.5%
C66Ruy Lopez, Berlin defence, 4.O-O, d611140.5%54.5%
C65Ruy Lopez, Berlin defence, Anderssen variation616.7%8.3%
C65Ruy Lopez, Berlin defence, Beverwijk variation59429.6%53.9%
C67Ruy Lopez, Berlin defence, Cordel variation4637.0%59.8%
C65Ruy Lopez, Berlin defence, Duras variation3234.4%45.3%
C65Ruy Lopez, Berlin defence, Kaufmann variation1118.2%45.5%
C67Ruy Lopez, Berlin defence, Minckwitz variation5738.6%63.2%
C65Ruy Lopez, Berlin defence, Mortimer variation1811.1%66.7%
C65Ruy Lopez, Berlin defence, Nyholm attack9335.5%53.2%
C67Ruy Lopez, Berlin defence, Pillsbury variation366.7%33.3%
C67Ruy Lopez, Berlin defence, Rio de Janeiro variation850.0%75.0%
C67Ruy Lopez, Berlin defence, Rosenthal variation4440.9%56.8%
C67Ruy Lopez, Berlin defence, Trifunovic variation30.0%100.0%
C67Ruy Lopez, Berlin defence, Winawer attack1070.0%45.0%
C67Ruy Lopez, Berlin defence, Zukertort variation1560.0%43.3%
C66Ruy Lopez, Berlin defence, hedgehog variation16539.4%53.0%
C67Ruy Lopez, Berlin defence, open variation902334.5%52.7%
C61Ruy Lopez, Bird's defence40130.7%57.5%
C61Ruy Lopez, Bird's defence, Paulsen variation1631.3%46.9%
C60Ruy Lopez, Brentano defence616.7%58.3%
C70Ruy Lopez, Caro variation9228.3%53.3%
C70Ruy Lopez, Classical defence deferred53026.2%51.8%
C64Ruy Lopez, Cordel gambit5827.6%70.7%
C60Ruy Lopez, Cozio defence43628.7%57.5%
C70Ruy Lopez, Cozio defence deferred17034.7%52.6%
C60Ruy Lopez, Cozio defence, Paulsen variation3737.8%54.1%
C85Ruy Lopez, Exchange variation doubly deferred (DERLD)166331.3%53.2%
C70Ruy Lopez, Graz variation1136.4%54.5%
C60Ruy Lopez, Lucena defence2520.0%46.0%
C89Ruy Lopez, Marshall counter-attack415334.2%51.8%
C89Ruy Lopez, Marshall counter-attack, 11...c6118635.2%48.3%
C89Ruy Lopez, Marshall, Herman Steiner variation385.3%52.6%
C89Ruy Lopez, Marshall, Kevitz variation1428.6%42.9%
C89Ruy Lopez, Marshall, main line, 12.d2d4139427.4%55.7%
C89Ruy Lopez, Marshall, main line, 14...Qh3103440.5%48.3%
C89Ruy Lopez, Marshall, main line, Spassky variation1100.0%50.0%
C78Ruy Lopez, Moeller defence80430.5%52.1%
C77Ruy Lopez, Morphy defence41433.3%54.6%
C77Ruy Lopez, Morphy defence, Duras variation10932.1%48.2%
C88Ruy Lopez, Noah's ark trap50.0%60.0%
C60Ruy Lopez, Nuernberg variation1936.8%44.7%
C78Ruy Lopez, Rabinovich variation10.0%100.0%
C63Ruy Lopez, Schliemann defence41227.4%57.2%
C70Ruy Lopez, Schliemann defence deferred4918.4%56.1%
C63Ruy Lopez, Schliemann defence, Berger variation75134.2%56.3%
C74Ruy Lopez, Siesta, Kopayev variation13527.4%53.0%
C79Ruy Lopez, Steinitz defence deferred (Russian defence)36332.8%52.5%
C79Ruy Lopez, Steinitz defence deferred, Lipnitsky variation1844.4%50.0%
C79Ruy Lopez, Steinitz defence deferred, Rubinstein variation1421.4%67.9%
C70Ruy Lopez, Taimanov (chase/wing/accelerated counterthrust) variation26026.5%54.8%
C88Ruy Lopez, Trajkovic counter-attack29126.8%53.3%
C77Ruy Lopez, Treybal (Bayreuth) variation (exchange var. deferred)19631.1%51.3%
C60Ruy Lopez, Vinogradov variation933.3%50.0%
C78Ruy Lopez, Wing attack2045.0%62.5%
C77Ruy Lopez, Wormald (Alapin) attack67133.2%50.4%
C77Ruy Lopez, Wormald attack, Gruenfeld variation450.0%75.0%
C86Ruy Lopez, Worrall attack9726.8%57.7%
C86Ruy Lopez, Worrall attack, sharp line28032.9%50.0%
C86Ruy Lopez, Worrall attack, solid line25630.9%51.0%
C64Ruy Lopez, classical (Cordel) defence71231.7%52.0%
C64Ruy Lopez, classical defence, 4.c345628.3%52.7%
C64Ruy Lopez, classical defence, Benelux variation 59333.4%51.1%
C64Ruy Lopez, classical defence, Boden variation1100.0%50.0%
C64Ruy Lopez, classical defence, Charousek variation2123.8%64.3%
C64Ruy Lopez, classical defence, Zaitsev variation250.0%75.0%
C88Ruy Lopez, closed421127.5%48.3%
C96Ruy Lopez, closed (10...c5)126629.9%59.5%
C96Ruy Lopez, closed (8...Na5)5626.8%52.7%
C90Ruy Lopez, closed (with ...d6)246127.8%49.4%
C66Ruy Lopez, closed Berlin defence, Bernstein variation3438.2%45.6%
C66Ruy Lopez, closed Berlin defence, Chigorin variation40.0%75.0%
C66Ruy Lopez, closed Berlin defence, Showalter variation6747.8%61.2%
C66Ruy Lopez, closed Berlin defence, Wolf variation13141.2%55.7%
C84Ruy Lopez, closed defence124532.4%51.9%
C88Ruy Lopez, closed, 7...O-O909929.9%51.9%
C88Ruy Lopez, closed, 7...d6, 8.d413124.4%38.2%
C88Ruy Lopez, closed, 8.c34825.0%50.0%
C91Ruy Lopez, closed, 9.d4397927.3%56.0%
C92Ruy Lopez, closed, 9.h357427.4%55.3%
C87Ruy Lopez, closed, Averbach variation39230.1%57.4%
C88Ruy Lopez, closed, Balla variation2937.9%63.8%
C91Ruy Lopez, closed, Bogolyubov variation645732.2%51.8%
C96Ruy Lopez, closed, Borisenko defence8228.0%57.9%
C94Ruy Lopez, closed, Breyer defence12237.7%53.3%
C95Ruy Lopez, closed, Breyer, Borisenko variation237830.5%56.3%
C95Ruy Lopez, closed, Breyer, Gligoric variation7719.5%65.6%
C95Ruy Lopez, closed, Breyer, Simagin variation7944.3%62.7%
C97Ruy Lopez, closed, Chigorin defence176522.9%60.1%
C98Ruy Lopez, closed, Chigorin, 12...Nc626426.9%63.8%
C99Ruy Lopez, closed, Chigorin, 12...c5d4207334.2%59.0%
C98Ruy Lopez, closed, Chigorin, Rauzer attack10.0%0.0%
C92Ruy Lopez, closed, Flohr-Zaitsev system (Lenzerheide variation)363132.4%54.0%
C96Ruy Lopez, closed, Keres (...Nd7) defence33038.8%60.9%
C92Ruy Lopez, closed, Keres (9...a5) variation5022.0%59.0%
C92Ruy Lopez, closed, Kholmov variation19926.6%59.0%
C90Ruy Lopez, closed, Lutikov variation2948.3%51.7%
C90Ruy Lopez, closed, Pilnik variation314326.0%52.5%
C92Ruy Lopez, closed, Ragozin-Petrosian (`Keres') variation31333.2%64.9%
C96Ruy Lopez, closed, Rossolimo defence616.7%75.0%
C93Ruy Lopez, closed, Smyslov defence25333.6%57.9%
C90Ruy Lopez, closed, Suetin variation5724.6%50.9%
C88Ruy Lopez, closed, anti-Marshall 8.a4166229.1%52.3%
C84Ruy Lopez, closed, centre attack22432.6%50.2%
C68Ruy Lopez, exchange variation34225.1%56.7%
C69Ruy Lopez, exchange variation, 5.O-O81630.3%54.5%
C69Ruy Lopez, exchange variation, Alapin gambit15932.1%53.1%
C68Ruy Lopez, exchange, Alekhine variation7732.5%43.5%
C69Ruy Lopez, exchange, Bronstein variation56730.3%51.7%
C69Ruy Lopez, exchange, Gligoric variation63735.3%54.4%
C68Ruy Lopez, exchange, Keres variation30435.5%51.3%
C68Ruy Lopez, exchange, Romanovsky variation1323.1%50.0%
C60Ruy Lopez, fianchetto (Smyslov/Barnes) defence51935.3%53.1%
C70Ruy Lopez, fianchetto defence deferred2748.1%61.1%
C77Ruy Lopez, four knights (Tarrasch) variation30631.0%56.0%
C71Ruy Lopez, modern Steinitz defence14628.8%52.1%
C74Ruy Lopez, modern Steinitz defence7338.4%57.5%
C75Ruy Lopez, modern Steinitz defence32727.8%57.6%
C72Ruy Lopez, modern Steinitz defence, 5.O-O55230.1%56.5%
C73Ruy Lopez, modern Steinitz defence, Alapin variation32727.2%54.6%
C71Ruy Lopez, modern Steinitz defence, Duras (Keres) variation20131.8%53.2%
C73Ruy Lopez, modern Steinitz defence, Richter variation24932.9%51.4%
C75Ruy Lopez, modern Steinitz defence, Rubinstein variation14933.6%59.1%
C71Ruy Lopez, modern Steinitz defence, Three knights variation2825.0%58.9%
C76Ruy Lopez, modern Steinitz defence, fianchetto (Bronstein) variation62628.3%51.4%
C74Ruy Lopez, modern Steinitz defence, siesta variation5429.6%50.0%
C62Ruy Lopez, old Steinitz defence66128.3%54.4%
C62Ruy Lopez, old Steinitz defence, Nimzovich attack2817.9%69.6%
C62Ruy Lopez, old Steinitz defence, semi-Duras variation742.9%78.6%
C80Ruy Lopez, open (Tarrasch) defence12638.9%48.8%
C67Ruy Lopez, open Berlin defence, 5...Be712133.1%56.2%
C67Ruy Lopez, open Berlin defence, Showalter variation425.0%62.5%
C67Ruy Lopez, open Berlin defence, l'Hermet variation10235.3%43.1%
C80Ruy Lopez, open, 6.d44727.7%60.6%
C80Ruy Lopez, open, 7.Bb351130.5%52.1%
C80Ruy Lopez, open, 8...Be6135732.4%46.1%
C80Ruy Lopez, open, 8.de1921.1%52.6%
C83Ruy Lopez, open, 9...Be7, 10.Re12231.8%56.8%
C82Ruy Lopez, open, 9.c3616.7%58.3%
C80Ruy Lopez, open, Berger variation666.7%33.3%
C82Ruy Lopez, open, Berlin variation2030.0%60.0%
C80Ruy Lopez, open, Bernstein variation98636.5%58.1%
C80Ruy Lopez, open, Bernstein variation, Karpov gambit1163.6%68.2%
C83Ruy Lopez, open, Breslau variation50.0%80.0%
C82Ruy Lopez, open, Dilworth variation9026.7%52.2%
C80Ruy Lopez, open, Friess attack850.0%37.5%
C80Ruy Lopez, open, Harksen gambit50.0%60.0%
C81Ruy Lopez, open, Howell attack9738.1%58.2%
C81Ruy Lopez, open, Howell attack, Ekstroem variation1752.9%61.8%
C82Ruy Lopez, open, Italian variation8931.5%61.8%
C83Ruy Lopez, open, Malkin variation1330.8%69.2%
C82Ruy Lopez, open, Motzko attack8538.8%52.4%
C82Ruy Lopez, open, Motzko attack, Nenarokov variation850.0%37.5%
C80Ruy Lopez, open, Richter variation30.0%33.3%
C80Ruy Lopez, open, Riga variation4129.3%58.5%
C80Ruy Lopez, open, Schlechter defence2339.1%32.6%
C82Ruy Lopez, open, St. Petersburg variation28838.9%59.4%
C80Ruy Lopez, open, Tartakower variation1338.5%57.7%
C80Ruy Lopez, open, Zukertort variation714.3%50.0%
C83Ruy Lopez, open, classical defence19337.8%57.8%
A06Santasiere's folly14635.6%47.9%
A00Saragossa opening93719.4%50.8%
B01Scandinavian (centre counter) defence549427.6%60.2%
B01Scandinavian defence172630.0%57.6%
B01Scandinavian defence, Gruenfeld variation1540.0%53.3%
B01Scandinavian defence, Lasker variation15427.3%63.6%
B01Scandinavian gambit19731.0%45.9%
B01Scandinavian, Anderssen counter-attack250.0%75.0%
B01Scandinavian, Anderssen counter-attack, Goteborg system50.0%100.0%
B01Scandinavian, Icelandic gambit7832.1%49.4%
B01Scandinavian, Kiel variation911.1%72.2%
B01Scandinavian, Marshall variation100328.8%59.5%
B01Scandinavian, Mieses-Kotrvc gambit267.7%50.0%
B01Scandinavian, Pytel-Wade variation328732.9%60.0%
B01Scandinavian, Richter variation1926.3%71.1%
C44Scotch gambit10526.7%50.5%
C44Scotch gambit, Anderssen (Paulsen, Suhle) counter-attack1100.0%50.0%
C44Scotch gambit, Benima defence6229.0%51.6%
C44Scotch gambit, Dubois-Reti defence67231.3%49.9%
C45Scotch game365831.8%53.4%
C44Scotch opening6926.1%40.6%
C45Scotch, Blackburne attack2254.5%54.5%
C45Scotch, Blumenfeld attack1040.0%20.0%
C45Scotch, Ghulam Kassim variation560.0%70.0%
C44Scotch, Goering gambit18931.2%50.5%
C44Scotch, Goering gambit, Bardeleben variation1020.0%40.0%
C45Scotch, Horwitz attack3438.2%54.4%
C44Scotch, Lolli variation7917.7%51.9%
C45Scotch, Meitner variation4235.7%53.6%
C45Scotch, Mieses variation212233.2%51.0%
C45Scotch, Paulsen attack1735.3%35.3%
C45Scotch, Potter variation30434.2%48.4%
C45Scotch, Pulling counter-attack3122.6%56.5%
C44Scotch, Relfsson gambit ('MacLopez')4411.4%44.3%
C45Scotch, Romanishin variation3426.5%45.6%
C45Scotch, Rosenthal variation10.0%0.0%
C45Scotch, Schmidt variation103140.0%50.3%
C45Scotch, Steinitz variation5724.6%45.6%
C45Scotch, Tartakower variation1735.3%52.9%
A44Semi-Benoni (`blockade variation')129521.6%61.5%
B50Sicilian556128.2%52.5%
B54Sicilian121427.3%53.8%
B56Sicilian537226.3%54.6%
B20Sicilian defence672324.1%48.5%
B27Sicilian defence11629.3%59.5%
B30Sicilian defence464929.1%52.0%
B32Sicilian defence113229.1%52.1%
B33Sicilian defence114628.6%53.0%
B40Sicilian defence930929.0%52.7%
B44Sicilian defence43629.8%53.0%
B22Sicilian, 2.c3, Heidenfeld variation4926.5%43.9%
B27Sicilian, Acton extension1323.1%57.7%
B22Sicilian, Alapin's variation (2.c3)1865631.9%54.0%
B40Sicilian, Anderssen variation252331.8%55.4%
B21Sicilian, Andreaschek gambit1844.4%61.1%
B58Sicilian, Boleslavsky variation89133.1%49.0%
B59Sicilian, Boleslavsky variation, 7.Nb316139.8%54.0%
B58Sicilian, Boleslavsky, Louma variation4628.3%55.4%
B51Sicilian, Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack300329.9%55.9%
B52Sicilian, Canal-Sokolsky attack, 3...Bd7165834.8%50.3%
B52Sicilian, Canal-Sokolsky attack, Bronstein gambit16627.1%43.1%
B52Sicilian, Canal-Sokolsky attack, Sokolsky variation140933.6%53.4%
B53Sicilian, Chekhover variation108837.3%50.5%
B53Sicilian, Chekhover, Zaitsev variation5523.6%55.5%
B32Sicilian, Flohr variation15328.1%56.5%
B20Sicilian, Gloria variation1020.0%50.0%
B21Sicilian, Grand Prix attack237225.3%49.5%
B23Sicilian, Grand Prix attack59926.4%52.8%
B23Sicilian, Grand Prix attack, Schofman variation1827.8%30.6%
B27Sicilian, Hungarian variation1044333.7%57.2%
B41Sicilian, Kan variation28229.1%54.6%
B42Sicilian, Kan, 5.Bd3468729.5%56.9%
B43Sicilian, Kan, 5.Nc3686829.1%54.8%
B42Sicilian, Kan, Gipslis variation19528.7%56.9%
B41Sicilian, Kan, Maroczy bind (Reti variation)98729.2%54.9%
B41Sicilian, Kan, Maroczy bind - Bronstein variation5928.8%56.8%
B42Sicilian, Kan, Polugaievsky variation298126.9%54.5%
B42Sicilian, Kan, Swiss cheese variation30727.7%56.5%
B27Sicilian, Katalimov variation18425.0%54.9%
B20Sicilian, Keres variation (2.Ne2)121625.6%52.8%
B32Sicilian, Labourdonnais-Loewenthal (Kalashnikov) variation188929.7%54.0%
B32Sicilian, Labourdonnais-Loewenthal variation39330.0%54.2%
B57Sicilian, Magnus Smith trap4327.9%53.5%
B40Sicilian, Marshall variation2615.4%42.3%
B90Sicilian, Najdorf1317424.8%51.1%
B98Sicilian, Najdorf variation21424.8%49.3%
B95Sicilian, Najdorf, 6...e6176026.5%53.9%
B94Sicilian, Najdorf, 6.Bg5179225.6%53.2%
B93Sicilian, Najdorf, 6.f4259529.4%49.6%
B98Sicilian, Najdorf, 7...Be728025.0%53.6%
B99Sicilian, Najdorf, 7...Be7 main line163022.1%54.3%
B97Sicilian, Najdorf, 7...Qb6279723.7%47.2%
B96Sicilian, Najdorf, 7.f4216723.3%49.1%
B90Sicilian, Najdorf, Adams attack301024.0%52.7%
B98Sicilian, Najdorf, Browne variation9632.3%57.8%
B90Sicilian, Najdorf, Byrne (English) attack5159424.9%51.5%
B98Sicilian, Najdorf, Goteborg (Argentine) variation1435.7%46.4%
B90Sicilian, Najdorf, Lipnitzky attack240628.9%48.7%
B92Sicilian, Najdorf, Opovcensky variation1192429.8%52.5%
B97Sicilian, Najdorf, Poisoned pawn variation353827.3%44.3%
B96Sicilian, Najdorf, Polugayevsky variation13826.1%52.2%
B96Sicilian, Najdorf, Polugayevsky, Simagin variation4520.0%52.2%
B91Sicilian, Najdorf, Zagreb (fianchetto) variation146727.6%51.2%
B32Sicilian, Nimzovich variation2814.3%53.6%
B31Sicilian, Nimzovich-Rossolimo attack (with ...g6, without ...d6)437429.9%55.7%
B30Sicilian, Nimzovich-Rossolimo attack (without ...d6)723829.2%54.8%
B31Sicilian, Nimzovich-Rossolimo attack, Gurgenidze variation1931.6%47.4%
B29Sicilian, Nimzovich-Rubinstein variation61930.4%56.1%
B29Sicilian, Nimzovich-Rubinstein; Rubinstein counter-gambit7236.1%56.9%
B28Sicilian, O'Kelly variation89928.8%56.3%
B33Sicilian, Pelikan (Lasker/Sveshnikov) variation129124.6%53.8%
B33Sicilian, Pelikan, Bird variation34326.2%59.5%
B33Sicilian, Pelikan, Chelyabinsk variation600927.2%55.3%
B40Sicilian, Pin variation (Sicilian counter-attack)15122.5%54.3%
B40Sicilian, Pin, Jaffe variation50.0%80.0%
B40Sicilian, Pin, Koch variation19122.5%72.0%
B54Sicilian, Prins (Moscow) variation48230.9%52.8%
B55Sicilian, Prins variation, Venice attack12137.2%56.6%
B27Sicilian, Quinteros variation9818.4%59.2%
B60Sicilian, Richter-Rauzer162626.1%56.2%
B62Sicilian, Richter-Rauzer, 6...e618626.3%48.1%
B60Sicilian, Richter-Rauzer, Bondarevsky variation2937.9%53.4%
B62Sicilian, Richter-Rauzer, Keres variation56331.1%53.7%
B60Sicilian, Richter-Rauzer, Larsen variation35924.8%54.7%
B61Sicilian, Richter-Rauzer, Larsen variation, 7.Qd261327.9%60.4%
B62Sicilian, Richter-Rauzer, Margate (Alekhine) variation54132.9%49.9%
B62Sicilian, Richter-Rauzer, Podvebrady variation4134.1%51.2%
B63Sicilian, Richter-Rauzer, Rauzer attack50427.0%56.9%
B63Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7220128.1%52.2%
B65Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9...Nxd4155330.8%56.9%
B64Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9.f463532.9%54.4%
B66Sicilian, Richter-Rauzer, Rauzer attack, 7...a61545024.8%51.2%
B69Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 11.Bxf645023.8%57.2%
B67Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 8...Bd7742925.2%52.5%
B68Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 9...Be724828.2%56.5%
B64Sicilian, Richter-Rauzer, Rauzer attack, Geller variation273.7%75.9%
B62Sicilian, Richter-Rauzer, Richter attack10.0%0.0%
B84Sicilian, Scheveningen (Paulsen), classical variation981029.2%51.9%
B80Sicilian, Scheveningen variation144323.8%53.6%
B83Sicilian, Scheveningen, 6.Be285930.5%51.2%
B82Sicilian, Scheveningen, 6.f481329.8%55.6%
B80Sicilian, Scheveningen, English variation63825.1%51.3%
B81Sicilian, Scheveningen, Keres attack482726.0%58.8%
B82Sicilian, Scheveningen, Tal variation19919.1%59.8%
B80Sicilian, Scheveningen, Vitolins variation11619.0%44.8%
B85Sicilian, Scheveningen, classical25338.7%52.6%
B85Sicilian, Scheveningen, classical main line71739.9%54.1%
B85Sicilian, Scheveningen, classical variation with ...Qc7 and ...Nc62321.7%50.0%
B85Sicilian, Scheveningen, classical, Maroczy system6833.8%55.1%
B84Sicilian, Scheveningen, classical, Nd7 system9825.5%53.6%
B80Sicilian, Scheveningen, fianchetto variation53428.1%51.5%
B21Sicilian, Smith-Morra gambit117028.5%49.9%
B86Sicilian, Sozin attack26327.4%44.9%
B87Sicilian, Sozin with ...a6 and ...b5139227.9%48.4%
B89Sicilian, Sozin, 7.Be3437927.0%49.1%
B57Sicilian, Sozin, Benko variation523429.4%51.0%
B88Sicilian, Sozin, Fischer variation4250.0%51.2%
B88Sicilian, Sozin, Leonhardt variation72134.0%49.4%
B57Sicilian, Sozin, not Scheveningen58130.5%54.5%
B20Sicilian, Steinitz variation128025.5%54.2%
B27Sicilian, Stiletto (Althouse) variation1612.5%68.8%
B33Sicilian, Sveshnikov variation326826.9%52.9%
B44Sicilian, Szen (`anti-Taimanov') variation100731.6%51.2%
B44Sicilian, Szen variation, Dely-Kasparov gambit2441.7%54.2%
B44Sicilian, Szen, hedgehog variation41930.8%48.3%
B47Sicilian, Taimanov (Bastrikov) variation1136330.9%54.5%
B45Sicilian, Taimanov variation507727.5%54.4%
B46Sicilian, Taimanov variation575928.9%54.8%
B48Sicilian, Taimanov variation742928.0%54.1%
B49Sicilian, Taimanov variation270031.2%55.3%
B45Sicilian, Taimanov, American attack2157.1%42.9%
B89Sicilian, Velimirovic attack173024.5%51.0%
B56Sicilian, Venice attack67434.4%62.6%
B39Sicilian, accelerated fianchetto, Breyer variation152133.2%60.9%
B36Sicilian, accelerated fianchetto, Gurgenidze variation37538.4%53.9%
B36Sicilian, accelerated fianchetto, Maroczy bind145135.6%55.6%
B37Sicilian, accelerated fianchetto, Maroczy bind, 5...Bg733435.0%52.5%
B38Sicilian, accelerated fianchetto, Maroczy bind, 6.Be3295738.7%57.2%
B37Sicilian, accelerated fianchetto, Simagin variation1030.0%45.0%
B34Sicilian, accelerated fianchetto, exchange variation2733.3%42.6%
B34Sicilian, accelerated fianchetto, modern variation138832.4%51.3%
B35Sicilian, accelerated fianchetto, modern variation with Bc4504034.3%53.8%
B23Sicilian, chameleon variation143027.6%55.7%
B58Sicilian, classical75735.0%51.6%
B23Sicilian, closed623026.9%53.0%
B24Sicilian, closed63927.7%49.1%
B25Sicilian, closed26930.9%50.0%
B23Sicilian, closed, 2...Nc6375527.7%53.2%
B26Sicilian, closed, 6.Be358525.8%48.5%
B25Sicilian, closed, 6.Ne2 e5 (Botvinnik)10020.0%53.0%
B25Sicilian, closed, 6.f492728.9%50.2%
B25Sicilian, closed, 6.f4 e5 (Botvinnik)11524.3%47.8%
B23Sicilian, closed, Korchnoi variation39532.9%48.6%
B24Sicilian, closed, Smyslov variation1435.7%75.0%
B70Sicilian, dragon variation81030.4%50.1%
B72Sicilian, dragon, 6.Be328428.5%51.2%
B71Sicilian, dragon, Levenfish variation9536.8%46.8%
B71Sicilian, dragon, Levenfish; Flohr variation812.5%56.3%
B75Sicilian, dragon, Yugoslav attack41628.8%52.4%
B78Sicilian, dragon, Yugoslav attack, 10.O-O-O114724.3%54.4%
B79Sicilian, dragon, Yugoslav attack, 12.h414531.0%64.5%
B76Sicilian, dragon, Yugoslav attack, 7...O-O64229.1%52.1%
B77Sicilian, dragon, Yugoslav attack, 9...Bd746625.5%55.3%
B77Sicilian, dragon, Yugoslav attack, 9.Bc49630.2%53.6%
B77Sicilian, dragon, Yugoslav attack, Byrne variation50.0%80.0%
B76Sicilian, dragon, Yugoslav attack, Rauser variation144426.9%59.5%
B72Sicilian, dragon, classical attack11332.7%55.3%
B73Sicilian, dragon, classical, 8.O-O24638.2%56.1%
B74Sicilian, dragon, classical, 9.Nb326738.2%49.8%
B74Sicilian, dragon, classical, Alekhine variation3522.9%62.9%
B72Sicilian, dragon, classical, Amsterdam variation6338.1%44.4%
B72Sicilian, dragon, classical, Grigoriev variation1145.5%68.2%
B72Sicilian, dragon, classical, Nottingham variation8930.3%45.5%
B74Sicilian, dragon, classical, Reti-Tartakower variation20334.5%52.2%
B73Sicilian, dragon, classical, Richter variation21636.1%49.5%
B74Sicilian, dragon, classical, Spielmann variation6628.8%53.8%
B73Sicilian, dragon, classical, Zollner gambit2035.0%22.5%
B83Sicilian, modern Scheveningen87030.6%50.3%
B83Sicilian, modern Scheveningen, main line71736.0%52.6%
B83Sicilian, modern Scheveningen, main line with Nb316323.9%50.0%
B20Sicilian, wing gambit9123.1%46.7%
B50Sicilian, wing gambit deferred3619.4%45.8%
B20Sicilian, wing gambit, Carlsbad variation3218.8%59.4%
B20Sicilian, wing gambit, Marshall variation48126.8%39.6%
B20Sicilian, wing gambit, Santasiere variation250.0%75.0%
B00St. George (Baker) defence19121.5%54.2%
C00St. George defence68127.3%55.1%
C44Tayler opening728.6%28.6%
A06Tennison (Lemberg, Zukertort) gambit2317.4%60.9%
C46Three knights game29125.8%52.7%
C46Three knights, Schlechter variation1533.3%63.3%
C46Three knights, Steinitz variation17820.8%53.7%
C46Three knights, Steinitz, Rosenthal variation1560.0%56.7%
D03Torre attack (Tartakower variation)96623.3%49.9%
A45Trompovsky attack (Ruth, Opovcensky opening)804925.1%51.7%
C55Two knights defence16827.4%47.6%
C56Two knights defence7834.6%50.6%
C57Two knights defence6720.9%35.8%
C58Two knights defence25325.3%56.5%
C59Two knights defence18026.1%47.5%
C55Two knights defence (Modern bishop's opening)144730.1%56.4%
C58Two knights defence, Blackburne variation450.0%75.0%
C58Two knights defence, Bogolyubov variation7219.4%55.6%
C56Two knights defence, Canal variation2748.1%42.6%
C58Two knights defence, Colman variation100.0%80.0%
C57Two knights defence, Fegatello attack7936.7%46.2%
C57Two knights defence, Fegatello attack, Leonhardt variation30.0%0.0%
C57Two knights defence, Fegatello attack, Polerio defence10.0%0.0%
C57Two knights defence, Fritz variation1233.3%50.0%
C57Two knights defence, Fritz, Gruber variation1735.3%52.9%
C59Two knights defence, Goering variation20.0%50.0%
C55Two knights defence, Keidanz variation1100.0%50.0%
C58Two knights defence, Kieseritsky variation3228.1%54.7%
C59Two knights defence, Knorre variation1100.0%50.0%
C57Two knights defence, Lolli attack2020.0%55.0%
C58Two knights defence, Paoli variation1118.2%81.8%
C55Two knights defence, Perreux variation3630.6%48.6%
C57Two knights defence, Pincus variation742.9%64.3%
C59Two knights defence, Steinitz variation19727.4%57.9%
C57Two knights defence, Ulvestad variation4025.0%57.5%
C57Two knights defence, Wilkes Barre (Traxler) variation7715.6%62.3%
C58Two knights defence, Yankovich variation540.0%40.0%
C55Two knights, Max Lange attack10922.9%48.2%
C55Two knights, Max Lange attack, Krause variation250.0%75.0%
C55Two knights, Max Lange attack, Marshall variation450.0%50.0%
C55Two knights, Max Lange attack, Schlechter variation10033.0%47.5%
C55Two knights, Max Lange attack, Steinitz variation911.1%61.1%
A00Van't Kruijs opening130827.0%52.2%
C25Vienna gambit7327.4%53.4%
C29Vienna gambit27430.7%49.3%
C29Vienna gambit, Bardeleben variation1428.6%28.6%
C29Vienna gambit, Breyer variation15134.4%55.0%
C29Vienna gambit, Heyde variation10.0%0.0%
C29Vienna gambit, Kaufmann variation1338.5%65.4%
C29Vienna gambit, Paulsen attack3737.8%56.8%
C29Vienna gambit, Steinitz variation3125.8%48.4%
C25Vienna game77225.1%52.2%
C26Vienna game36327.3%54.1%
C27Vienna game30624.8%51.0%
C28Vienna game39629.8%51.3%
C25Vienna game, Max Lange defence7623.7%48.7%
C27Vienna, Alekhine variation12826.6%44.5%
C26Vienna, Falkbeer variation14117.0%51.1%
C25Vienna, Hamppe-Allgaier gambit520.0%30.0%
C26Vienna, Mengarini variation3735.1%58.1%
C25Vienna, Paulsen variation73422.8%50.6%
C26Vienna, Paulsen-Mieses variation116230.6%51.0%
C25Vienna, Pierce gambit1816.7%36.1%
C25Vienna, Steinitz gambit540.0%60.0%
C25Vienna, Steinitz gambit, Fraser-Minckwitz variation714.3%50.0%
C25Vienna, Steinitz gambit, Zukertort defence1100.0%50.0%
C27Vienna, `Frankenstein-Dracula' variation4226.2%56.0%
A56Vulture defence30.0%33.3%
A00Ware (Meadow Hay) opening20921.5%47.1%
A43Woozle defence4015.0%50.0%
B12de Bruycker defence2638.5%50.0%

Created in 2005-2013 by CCRL team
Last games added on July 15, 2018