CCRL 40/4
Downloads and Statistics
April 15, 2018
Testing summary:
Total: 1'713'036 games
played by 2'011 programs
23129 CPU days (X2 4600+)

White wins: 669'108 (39.1%)
Black wins: 543'275 (31.7%)
Draws: 500'653 (29.2%)
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 defence59532.6%55.3%
B03Alekhine's defence78924.1%53.7%
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 variation27023.0%47.4%
B02Alekhine's defence, Mokele Mbembe (Buecker) variation2722.2%63.0%
B03Alekhine's defence, O'Sullivan gambit166.3%59.4%
B02Alekhine's defence, Saemisch attack27023.0%59.3%
B02Alekhine's defence, Scandinavian variation41027.8%56.3%
B02Alekhine's defence, Spielmann variation1631.3%59.4%
B02Alekhine's defence, Steiner variation825.0%37.5%
B02Alekhine's defence, Two pawns' (Lasker's) attack15241.4%47.0%
B02Alekhine's defence, Two pawns' attack, Mikenas variation250.0%75.0%
B02Alekhine's defence, Welling variation3030.0%45.0%
B03Alekhine's defence, exchange variation82831.9%58.5%
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...Nc67220.8%52.1%
B03Alekhine's defence, four pawns attack, 7.Be317828.7%63.8%
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 variation7223.6%66.0%
B03Alekhine's defence, four pawns attack, fianchetto variation5236.5%64.4%
B04Alekhine's defence, modern variation41923.2%61.5%
B05Alekhine's defence, modern variation, 4...Bg494829.1%64.3%
B05Alekhine's defence, modern, Alekhine variation650.0%58.3%
B05Alekhine's defence, modern, Flohr variation40729.5%65.1%
B04Alekhine's defence, modern, Keres variation18033.3%62.8%
B04Alekhine's defence, modern, Larsen variation137932.2%57.2%
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 variation94030.7%55.1%
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 gambit121725.1%54.5%
A59Benko gambit8632.6%64.0%
A58Benko gambit accepted85631.1%55.4%
A57Benko gambit half accepted124929.4%57.8%
A59Benko gambit, 7.e41435.7%67.9%
A58Benko gambit, Nd2 variation1533.3%50.0%
A59Benko gambit, Ne2 variation1428.6%64.3%
A57Benko gambit, Nescafe Frappe attack120.0%33.3%
A57Benko gambit, Zaitsev system7625.0%52.0%
A58Benko gambit, fianchetto variation39829.9%55.2%
A59Benko gambit, main line96434.0%62.4%
A00Benko's opening1161830.9%51.0%
A00Benko's opening, reversed Alekhine11326.5%48.7%
A56Benoni defence159626.7%59.0%
A60Benoni defence23827.3%53.2%
A61Benoni defence74724.8%58.6%
A56Benoni defence, Hromodka system112421.1%58.6%
A65Benoni, 6.e419823.2%59.6%
A66Benoni, Mikenas variation450.0%50.0%
A61Benoni, Nimzovich (knight's tour) variation71427.5%57.3%
A67Benoni, Taimanov variation41419.3%58.9%
A61Benoni, Uhlmann variation10928.4%50.9%
A78Benoni, classical with ...Re8 and ...Na68634.9%53.5%
A75Benoni, classical with ...a6 and 10...Bg415529.0%53.2%
A70Benoni, classical with e4 and Nf3158726.6%59.2%
A70Benoni, classical without 9.O-O922.2%77.8%
A72Benoni, classical without 9.O-O12528.0%60.4%
A79Benoni, classical, 11.f320120.4%66.9%
A71Benoni, classical, 8.Bg513325.6%54.1%
A76Benoni, classical, 9...Re813215.9%59.5%
A77Benoni, classical, 9...Re8, 10.Nd241024.9%56.1%
A74Benoni, classical, 9...a6, 10.a43033.3%53.3%
A73Benoni, classical, 9.O-O27824.5%53.6%
A61Benoni, fianchetto variation6825.0%53.7%
A62Benoni, fianchetto variation147422.9%55.2%
A64Benoni, fianchetto, 11...Re818926.5%52.9%
A63Benoni, fianchetto, 9...Nbd712025.8%58.8%
A68Benoni, four pawns attack140.0%42.9%
A69Benoni, four pawns attack, main line9532.6%42.6%
A66Benoni, pawn storm variation560.0%70.0%
A02Bird's opening287829.5%49.8%
A03Bird's opening304824.4%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 gambit8826.1%47.2%
A02Bird, From gambit, Lasker variation3414.7%54.4%
A02Bird, From gambit, Lipke variation520.0%30.0%
A02Bird, Hobbs gambit425.0%62.5%
C23Bishop's opening39124.0%52.9%
C24Bishop's opening, Berlin defence146127.7%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 variation11619.0%50.9%
C23Bishop's opening, Lewis counter-gambit633.3%50.0%
C23Bishop's opening, Lewis gambit540.0%40.0%
C23Bishop's opening, Philidor counter-attack10634.9%59.0%
C23Bishop's opening, Philidor variation1926.3%55.3%
C24Bishop's opening, Ponziani gambit2128.6%38.1%
C24Bishop's opening, Urusov gambit3026.7%43.3%
C24Bishop's opening, Urusov gambit, Panov variation616.7%58.3%
D00Blackmar gambit8330.1%42.8%
A45Blackmar-Diemer gambit16927.2%54.4%
D00Blackmar-Diemer gambit3215.6%51.6%
D00Blackmar-Diemer, Euwe defence110.0%45.5%
D00Blackmar-Diemer, Lemberg counter-gambit250.0%75.0%
E10Blumenfeld counter-gambit13027.7%54.6%
E10Blumenfeld counter-gambit accepted20523.4%53.7%
E10Blumenfeld counter-gambit, Dus-Chotimursky variation38928.3%55.3%
E10Blumenfeld counter-gambit, Spielmann variation10119.8%53.5%
C27Boden-Kieseritsky gambit6016.7%50.0%
C27Boden-Kieseritsky gambit, Lichtenhein defence633.3%33.3%
E11Bogo-Indian defence367332.8%55.4%
E11Bogo-Indian defence, Gruenfeld variation379531.0%55.5%
E11Bogo-Indian defence, Monticelli trap2825.0%55.4%
E11Bogo-Indian defence, Nimzovich variation272228.6%56.5%
A52Budapest defence7625.0%55.9%
A51Budapest defence declined5623.2%52.7%
A52Budapest, Adler variation67929.9%59.6%
A52Budapest, Alekhine variation6822.1%47.8%
A52Budapest, Alekhine, Abonyi variation5028.0%60.0%
A51Budapest, Fajarowicz variation13126.7%62.2%
A51Budapest, Fajarowicz, Steiner variation3100.0%50.0%
A52Budapest, Rubinstein variation77236.7%58.6%
A45Canard opening2718.5%50.0%
B10Caro-Kann defence582725.1%53.7%
B12Caro-Kann defence193822.1%57.2%
B15Caro-Kann defence61925.0%49.8%
B12Caro-Kann, 3.Nd248626.7%59.5%
B15Caro-Kann, Alekhine gambit3250.0%53.1%
B16Caro-Kann, Bronstein-Larsen variation75324.6%61.2%
B12Caro-Kann, Edinburgh variation5318.9%71.7%
B15Caro-Kann, Forgacs variation11936.1%55.0%
B10Caro-Kann, Goldman (Spielmann) variation11422.8%48.2%
B15Caro-Kann, Gurgenidze counter-attack3116.1%59.7%
B15Caro-Kann, Gurgenidze system53828.8%57.3%
B10Caro-Kann, Hillbilly attack3735.1%58.1%
B13Caro-Kann, Panov-Botvinnik attack189732.5%53.7%
B14Caro-Kann, Panov-Botvinnik attack, 5...e6622433.4%55.1%
B14Caro-Kann, Panov-Botvinnik attack, 5...g647538.5%53.8%
B13Caro-Kann, Panov-Botvinnik, Czerniak variation4045.0%60.0%
B13Caro-Kann, Panov-Botvinnik, Gunderam attack933.3%38.9%
B13Caro-Kann, Panov-Botvinnik, Herzog defence2227.3%54.5%
B13Caro-Kann, Panov-Botvinnik, Reifir (Spielmann) variation425.0%87.5%
B13Caro-Kann, Panov-Botvinnik, normal variation25736.2%48.8%
B15Caro-Kann, Rasa-Studier gambit1330.8%38.5%
B17Caro-Kann, Steinitz variation549529.0%53.8%
B15Caro-Kann, Tartakower (Nimzovich) variation138332.5%53.1%
B12Caro-Kann, Tartakower (fantasy) variation102127.4%55.0%
B10Caro-Kann, Two knights variation92227.3%55.6%
B11Caro-Kann, Two knights, 3...Bg4159725.4%53.1%
B12Caro-Kann, advance variation2296124.7%54.2%
B12Caro-Kann, advance, Short variation9718.6%66.0%
B10Caro-Kann, anti-Caro-Kann defence133026.5%56.5%
B10Caro-Kann, anti-anti-Caro-Kann defence226933.9%51.7%
B18Caro-Kann, classical variation206130.4%54.9%
B18Caro-Kann, classical, 6.h4248430.8%53.5%
B19Caro-Kann, classical, 7...Nd792625.1%52.1%
B18Caro-Kann, classical, Flohr variation10437.5%59.1%
B18Caro-Kann, classical, Maroczy attack742.9%64.3%
B19Caro-Kann, classical, Spassky variation893127.7%57.5%
B10Caro-Kann, closed (Breyer) variation181924.7%50.4%
B13Caro-Kann, exchange variation111827.2%50.8%
B13Caro-Kann, exchange, Rubinstein variation21932.9%55.7%
B12Caro-Masi defence1414.3%50.0%
B00Carr's defence6524.6%53.8%
E00Catalan opening675230.7%54.2%
E01Catalan, closed54230.6%53.7%
E06Catalan, closed, 5.Nf3677134.4%54.2%
E07Catalan, closed, 6...Nbd719129.3%52.9%
E08Catalan, closed, 7.Qc223931.4%54.2%
E07Catalan, closed, Botvinnik variation15324.2%60.5%
E08Catalan, closed, Qc2 & b343228.0%52.4%
E09Catalan, closed, Sokolsky variation540.0%60.0%
E08Catalan, closed, Spassky gambit2722.2%59.3%
E08Catalan, closed, Zagoryansky variation450.0%75.0%
E09Catalan, closed, main line68528.3%56.8%
E04Catalan, open, 5.Nf31131632.4%53.5%
E02Catalan, open, 5.Qa49838.8%59.2%
E03Catalan, open, 5.Qa4 Nbd7, 6.Qxc43641.7%56.9%
E03Catalan, open, Alekhine variation156.7%43.3%
E05Catalan, open, classical line51331.4%56.0%
C21Centre game29733.3%57.1%
C22Centre game2626.9%55.8%
C22Centre game, Berger variation40226.4%53.5%
C22Centre game, Charousek variation714.3%50.0%
C22Centre game, Hall variation1533.3%43.3%
C22Centre game, Paulsen attack11335.4%49.6%
A00Clemenz (Mead's, Basman's or de Klerk's) opening514523.1%49.8%
D05Colle system80830.6%52.3%
B00Corn stalk defence1136.4%81.8%
A56Czech Benoni defence80424.8%61.8%
A56Czech Benoni, King's Indian system35419.5%60.3%
C40Damiano's defence2927.6%55.2%
C21Danish gambit6428.1%54.7%
C21Danish gambit, Collijn defence30.0%33.3%
C21Danish gambit, Soerensen defence3627.8%52.8%
A46Doery defence250.0%25.0%
E10Doery defence10823.1%45.8%
C44Dresden opening5820.7%46.6%
A00Dunst (Sleipner, Heinrichsen) opening193123.4%52.0%
A00Durkin's attack6717.9%53.7%
A80Dutch813926.5%54.1%
A81Dutch defence733928.6%56.1%
A84Dutch defence173426.0%56.5%
A90Dutch defence206526.0%55.9%
A91Dutch defence21233.0%52.8%
A92Dutch defence11932.8%59.2%
A92Dutch defence, Alekhine variation12130.6%58.3%
A81Dutch defence, Blackburne variation8332.5%62.0%
A90Dutch defence, Dutch-Indian (Nimzo-Dutch) variation49028.4%60.7%
A84Dutch defence, Rubinstein variation66728.2%56.8%
A85Dutch with c4 & Nc358233.2%56.1%
A86Dutch with c4 & g320927.3%62.4%
A80Dutch, 2.Bg5 variation244623.1%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 Qc219627.0%60.5%
A99Dutch, Ilyin-Genevsky variation with b350725.0%59.3%
A97Dutch, Ilyin-Genevsky, Winter variation19135.1%64.7%
A80Dutch, Korchnoi attack10631.1%53.3%
A80Dutch, Krejcik gambit18132.6%46.7%
A86Dutch, Leningrad variation20931.6%60.3%
A81Dutch, Leningrad, Karlsbad variation742.9%64.3%
A87Dutch, Leningrad, main variation82628.2%59.6%
A89Dutch, Leningrad, main variation with Nc6145328.4%57.9%
A88Dutch, Leningrad, main variation with c6223131.2%56.6%
A80Dutch, Manhattan (Alapin, Ulvestad) variation12122.3%55.0%
A80Dutch, Spielmann gambit333.3%16.7%
A82Dutch, Staunton gambit16530.9%40.9%
A84Dutch, Staunton gambit deferred1625.0%37.5%
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 line24526.1%46.9%
A82Dutch, Staunton gambit, Tartakower variation1618.8%53.1%
A80Dutch, Von Pretzel gambit333.3%16.7%
A96Dutch, classical variation56930.9%61.5%
A92Dutch, stonewall variation35426.6%58.8%
A94Dutch, stonewall with Ba318835.6%54.0%
A92Dutch, stonewall with Nc39028.9%60.0%
A95Dutch, stonewall with Nc347426.4%54.3%
A93Dutch, stonewall, Botwinnik variation27428.5%60.2%
A95Dutch, stonewall: Chekhover variation5036.0%56.0%
A90Dutch-Indian, Alekhine variation11230.4%49.1%
E10Dzindzikhashvili defence20227.7%59.9%
A10English opening496125.6%53.5%
A13English opening493325.5%52.9%
A15English opening1300433.1%54.1%
A16English opening123528.1%53.8%
A17English opening36931.2%53.0%
A20English opening1116228.5%52.2%
A21English opening338927.3%54.1%
A22English opening105525.8%50.4%
A13English opening, Agincourt variation288728.0%52.3%
A15English, 1...Nf6 (Anglo-Indian defense)166727.1%52.5%
A10English, Adorjan defence53936.5%51.7%
A10English, Anglo-Dutch defense138725.2%55.5%
A16English, Anglo-Gruenfeld defense32330.7%52.5%
A16English, Anglo-Gruenfeld defense, Korchnoi variation1631.3%65.6%
A16English, Anglo-Gruenfeld, Czech defense13130.5%67.2%
A16English, Anglo-Gruenfeld, Smyslov defense7739.0%59.7%
A22English, Bellon gambit2015.0%42.5%
A12English, Bled variation4431.8%59.1%
A26English, Botvinnik system42224.6%48.6%
A28English, Bradley Beach variation19229.2%43.8%
A24English, Bremen system with ...g69025.6%59.4%
A23English, Bremen system, Keres variation46332.8%49.0%
A22English, Bremen, Smyslov system271228.1%48.8%
A22English, Bremen, reverse dragon166034.7%53.2%
A12English, Capablanca's variation7427.0%48.6%
A22English, Carls' Bremen system87026.3%55.1%
A11English, Caro-Kann defensive system154027.9%56.3%
A12English, Caro-Kann defensive system28127.8%55.5%
A12English, Caro-Kann defensive system, Bogolyubov variation13822.5%51.1%
A10English, Jaenisch gambit1921.1%68.4%
A21English, Keres variation2634.6%44.2%
A21English, Kramnik-Shirov counterattack370128.6%52.5%
A13English, Kurajica defence12025.0%51.7%
A12English, London defensive system40430.4%50.1%
A18English, Mikenas-Carls variation10825.0%56.9%
A18English, Mikenas-Carls, Flohr variation17531.4%59.7%
A18English, Mikenas-Carls, Kevitz variation4717.0%55.3%
A19English, Mikenas-Carls, Sicilian variation26628.6%55.3%
A28English, Nenarokov variation7833.3%46.2%
A13English, Neo-Catalan187730.6%53.8%
A13English, Neo-Catalan accepted234233.4%54.3%
A14English, Neo-Catalan declined115735.6%52.8%
A12English, New York (London) defensive system4934.7%43.9%
A17English, Nimzo-English opening259231.1%54.6%
A20English, Nimzovich variation29926.4%54.0%
A20English, Nimzovich, Flohr variation66729.7%46.5%
A17English, Queens Indian formation23326.2%54.3%
A17English, Queens Indian, Romanishin variation4835.4%46.9%
A13English, Romanishin gambit80030.4%54.3%
A25English, Sicilian reversed110926.5%51.8%
A21English, Smyslov defence5527.3%57.3%
A14English, Symmetrical, Keres defence89836.2%54.8%
A12English, Torre defensive system41034.1%52.2%
A21English, Troeger defence17828.7%54.2%
A13English, Wimpey system34231.6%46.8%
A25English, closed system141127.9%53.3%
A26English, closed system34824.1%51.1%
A25English, closed system (without ...d6)10223.5%49.0%
A25English, closed, 5.Rb171128.4%52.3%
A25English, closed, 5.Rb1 Taimanov variation425.0%37.5%
A25English, closed, Hort variation4332.6%51.2%
A25English, closed, Taimanov variation3336.4%45.5%
A28English, four knights system65425.7%52.6%
A28English, four knights, 4.e3145228.2%51.5%
A28English, four knights, Capablanca variation50629.4%52.5%
A28English, four knights, Marini variation144831.6%53.9%
A28English, four knights, Nimzovich variation149930.6%52.0%
A28English, four knights, Romanishin variation118534.3%50.5%
A28English, four knights, Stean variation17624.4%56.0%
A29English, four knights, kingside fianchetto1753230.8%51.5%
A30English, symmetrical variation873029.3%53.9%
A32English, symmetrical variation89928.6%52.7%
A33English, symmetrical variation452635.0%52.3%
A34English, symmetrical variation191926.7%50.7%
A35English, symmetrical variation38628.5%57.3%
A36English, symmetrical variation17526.3%49.7%
A37English, symmetrical variation98829.4%52.8%
A38English, symmetrical variation75329.2%53.1%
A31English, symmetrical, Benoni formation230628.2%54.5%
A36English, symmetrical, Botvinnik system68527.9%56.0%
A36English, symmetrical, Botvinnik system reversed15927.7%50.3%
A37English, symmetrical, Botvinnik system reversed73327.6%51.3%
A33English, symmetrical, Geller variation313330.6%52.5%
A34English, symmetrical, Rubinstein system36733.0%53.5%
A35English, symmetrical, four knights system422730.3%52.9%
A30English, symmetrical, hedgehog system796031.9%55.6%
A30English, symmetrical, hedgehog, flexible formation58836.2%57.2%
A38English, symmetrical, main line with b31136.4%36.4%
A38English, symmetrical, main line with d316535.2%50.9%
A39English, symmetrical, main line with d4125837.0%54.9%
A34English, symmetrical, three knights system248634.8%52.4%
A27English, three knights system54127.9%53.1%
A36English, ultra-symmetrical variation223127.9%48.8%
C51Evans gambit60.0%0.0%
C52Evans gambit26626.3%39.1%
C51Evans gambit declined2334.8%39.1%
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 variation12231.1%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 variation6123.0%44.3%
C52Evans gambit, Tartakower attack10322.3%51.0%
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 game95029.6%50.2%
C48Four knights, Bardeleben variation728.6%57.1%
C47Four knights, Belgrade gambit25326.1%43.5%
C49Four knights, Gunsberg counter-attack1100.0%50.0%
C46Four knights, Gunsberg variation12729.9%42.5%
C46Four knights, Italian variation40828.9%48.5%
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 variation2825.0%44.6%
C48Four knights, Rubinstein counter-gambit155726.5%54.0%
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 variation4936.7%61.2%
C48Four knights, Rubinstein counter-gambit, exchange variation13342.1%48.9%
C46Four knights, Schultze-Mueller gambit2528.0%38.0%
C47Four knights, Scotch variation5038.0%59.0%
C47Four knights, Scotch, 4...exd479036.5%50.9%
C47Four knights, Scotch, Krause variation19633.2%53.8%
C48Four knights, Spanish variation34927.2%52.3%
C48Four knights, Spanish, classical defence17127.5%52.3%
C48Four knights, Spielmann variation633.3%50.0%
C49Four knights, Svenonius variation30.0%66.7%
C49Four knights, double Ruy Lopez34141.9%57.3%
C49Four knights, symmetrical variation52131.5%49.5%
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 unpin49135.0%52.3%
C49Four knights, symmetrical, Pillsbury variation4725.5%42.6%
C49Four knights, symmetrical, Tarrasch variation540.0%60.0%
B00Fred80.0%87.5%
C00French defence389924.0%54.4%
C11French defence63025.9%49.6%
C00French defence, Steiner variation112128.1%49.7%
C00French, Alapin variation4714.9%47.9%
C13French, Albin-Alekhine-Chatard attack42722.0%56.9%
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 variation6229.0%58.1%
C13French, Albin-Alekhine-Chatard attack, Teichmann variation922.2%88.9%
C11French, Burn variation954531.1%52.0%
C00French, Chigorin variation321224.8%50.6%
C10French, Fort Knox variation46934.3%54.3%
C10French, Frere (Becker) variation4822.9%55.2%
C11French, Henneberger variation3138.7%32.3%
C00French, King's Indian attack745728.6%50.9%
C00French, Labourdonnais variation64625.5%49.1%
C12French, MacCutcheon variation30530.5%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 variation46919.8%52.1%
C12French, MacCutcheon, Lasker variation, 8...g676124.4%54.5%
C12French, MacCutcheon, Tartakower variation450.0%50.0%
C12French, MacCutcheon, advance variation1241.7%54.2%
C10French, Marshall variation1435.7%67.9%
C10French, Paulsen variation159527.2%56.5%
C00French, Pelikan variation8726.4%48.9%
C00French, Reti (Spielmann) variation29027.2%55.0%
C00French, Reversed Philidor formation8229.3%40.2%
C10French, Rubinstein variation825032.8%53.5%
C10French, Rubinstein, Capablanca line2236.4%54.5%
C00French, Schlechter variation47331.7%50.7%
C00French, Steinitz attack5036.0%52.0%
C11French, Steinitz variation183526.9%54.0%
C11French, Steinitz, Boleslavsky variation736726.2%54.6%
C11French, Steinitz, Bradford attack30.0%33.3%
C11French, Steinitz, Gledhill attack5339.6%53.8%
C11French, Swiss variation13730.7%43.8%
C03French, Tarrasch295630.0%56.2%
C05French, Tarrasch, Botvinnik variation15324.2%57.8%
C07French, Tarrasch, Eliskases variation11235.7%50.9%
C04French, Tarrasch, Guimard main line46026.3%56.4%
C03French, Tarrasch, Guimard variation24023.8%60.6%
C03French, Tarrasch, Haberditz variation1513.3%66.7%
C06French, Tarrasch, Leningrad variation5117.6%53.9%
C05French, Tarrasch, closed variation199824.4%57.1%
C06French, Tarrasch, closed variation, main line276232.2%55.2%
C07French, Tarrasch, open variation649532.6%52.8%
C09French, Tarrasch, open variation, main line222137.3%55.9%
C08French, Tarrasch, open, 4.ed ed349336.6%52.7%
C00French, Two knights variation89024.6%50.2%
C15French, Winawer (Nimzovich) variation135432.2%53.1%
C15French, Winawer, Alekhine (Maroczy) gambit39230.9%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 variation41125.1%53.9%
C16French, Winawer, advance variation116025.0%56.6%
C17French, Winawer, advance variation9925.3%60.1%
C18French, Winawer, advance variation79520.9%57.6%
C17French, Winawer, advance, 5.a377825.4%57.3%
C19French, Winawer, advance, 6...Ne784926.3%59.3%
C17French, Winawer, advance, Bogolyubov variation30728.7%56.4%
C17French, Winawer, advance, Rauzer variation955.6%50.0%
C17French, Winawer, advance, Russian variation7427.0%48.6%
C19French, Winawer, advance, Smyslov variation26625.9%58.8%
C19French, Winawer, advance, poisoned pawn variation515424.3%58.8%
C19French, Winawer, advance, poisoned pawn, Euwe-Gligoric variation1450.0%53.6%
C19French, Winawer, advance, poisoned pawn, Konstantinopolsky variation126425.7%60.4%
C19French, Winawer, advance, positional main line287623.5%57.6%
C18French, Winawer, classical variation81821.3%56.5%
C15French, Winawer, fingerslip variation3920.5%59.0%
C00French, Wing gambit5012.0%44.0%
C02French, advance variation208225.2%54.0%
C02French, advance, Euwe variation341524.8%52.4%
C02French, advance, Milner-Barry gambit12925.6%53.1%
C02French, advance, Nimzovich system32819.5%46.6%
C02French, advance, Nimzovich variation5125.5%28.4%
C02French, advance, Paulsen attack223624.2%53.4%
C02French, advance, Steinitz variation71627.7%50.0%
C02French, advance, Wade variation39527.8%54.9%
C13French, classical2512.0%54.0%
C14French, classical variation2313.0%23.9%
C14French, classical, Alapin variation9438.3%58.5%
C13French, classical, Anderssen variation4621.7%39.1%
C13French, classical, Anderssen-Richter variation1315.4%30.8%
C13French, classical, Frankfurt variation1618.8%84.4%
C14French, classical, Pollock variation1612.5%43.8%
C14French, classical, Rubinstein variation5320.8%55.7%
C14French, classical, Stahlberg variation450.0%75.0%
C14French, classical, Steinitz variation96826.4%57.9%
C14French, classical, Tarrasch variation850.0%62.5%
C13French, classical, Tartakower variation2626.9%55.8%
C13French, classical, Vistaneckis (Nimzovich) variation40.0%75.0%
C01French, exchange variation227132.6%53.3%
C01French, exchange, Bogolyubov variation922.2%33.3%
C01French, exchange, Svenonius variation6937.7%56.5%
A00Gedult's opening3116.1%40.3%
C50Giuoco Pianissimo199530.3%52.3%
C50Giuoco Pianissimo, Canal variation23830.3%51.3%
C50Giuoco Pianissimo, Italian four knights variation53429.2%55.4%
C50Giuoco Piano176229.4%51.2%
C53Giuoco Piano513827.8%52.5%
C54Giuoco Piano15827.8%55.1%
C53Giuoco Piano, Anderssen variation2250.0%52.3%
C53Giuoco Piano, Bird's attack14226.1%51.8%
C54Giuoco Piano, Greco variation1100.0%50.0%
C54Giuoco Piano, Greco's attack425.0%37.5%
C53Giuoco Piano, LaBourdonnais variation1741.2%61.8%
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 variation14128.4%51.8%
C55Giuoco piano1100.0%50.0%
A00Global opening1618.8%71.9%
C40Greco defence9017.8%64.4%
A00Grob's attack23621.6%48.9%
A00Grob, Fritz gambit3910.3%20.5%
D80Gruenfeld defence84141.4%53.5%
D99Gruenfeld defence, Smyslov, Yugoslav variation5149.0%59.8%
D99Gruenfeld defence, Smyslov, main line38930.6%61.8%
D93Gruenfeld with Bf4 e371537.6%52.8%
D94Gruenfeld with e3 Bd33040.0%60.0%
D95Gruenfeld with e3 & Qb37337.0%50.0%
D82Gruenfeld, 4.Bf458933.6%53.5%
D92Gruenfeld, 5.Bf4114033.0%55.4%
D91Gruenfeld, 5.Bg5208031.9%49.7%
D94Gruenfeld, 5.e376235.0%57.8%
D95Gruenfeld, Botvinnik variation11631.0%44.0%
D94Gruenfeld, Flohr defence6826.5%54.4%
D90Gruenfeld, Flohr variation30935.6%48.9%
D83Gruenfeld, Gruenfeld gambit6931.9%50.7%
D84Gruenfeld, Gruenfeld gambit accepted9326.9%66.1%
D83Gruenfeld, Gruenfeld gambit, Botvinnik variation2365.2%41.3%
D83Gruenfeld, Gruenfeld gambit, Capablanca variation11144.1%57.2%
D94Gruenfeld, Makogonov variation23132.0%51.1%
D94Gruenfeld, Opovcensky variation21137.9%49.8%
D81Gruenfeld, Russian variation39434.8%55.5%
D96Gruenfeld, Russian variation52830.3%53.8%
D97Gruenfeld, Russian variation with e47431.1%50.7%
D97Gruenfeld, Russian, Alekhine (Hungarian) variation412231.5%51.5%
D97Gruenfeld, Russian, Byrne (Simagin) variation35426.0%50.3%
D98Gruenfeld, Russian, Keres variation1225.0%70.8%
D97Gruenfeld, Russian, Levenfish variation2020.0%55.0%
D97Gruenfeld, Russian, Prins variation121334.0%55.6%
D98Gruenfeld, Russian, Smyslov variation60428.1%54.1%
D97Gruenfeld, Russian, Szabo (Boleslavsky) variation34829.0%60.5%
D90Gruenfeld, Schlechter variation2821.4%60.7%
D94Gruenfeld, Smyslov defence25735.8%52.9%
D88Gruenfeld, Spassky variation, main line, 10...cd, 11.cd33941.3%51.9%
D89Gruenfeld, Spassky variation, main line, 13.Bd310732.7%53.7%
D80Gruenfeld, Stockholm variation60234.9%49.8%
D90Gruenfeld, Three knights variation73934.6%53.9%
D85Gruenfeld, exchange variation302936.3%52.7%
D86Gruenfeld, exchange, Larsen variation2128.6%61.9%
D87Gruenfeld, exchange, Seville variation18338.8%65.3%
D86Gruenfeld, exchange, Simagin's improved variation13833.3%54.3%
D86Gruenfeld, exchange, Simagin's lesser variation6432.8%61.7%
D89Gruenfeld, exchange, Sokolsky variation6434.4%39.1%
D87Gruenfeld, exchange, Spassky variation70534.0%57.2%
D86Gruenfeld, exchange, classical variation135731.9%54.5%
D85Gruenfeld, modern exchange variation787036.7%53.5%
B00Guatemala defence10.0%100.0%
C40Gunderam defence24323.0%63.4%
C21Halasz gambit4528.9%41.1%
A43Hawk (Habichd) defence425.0%37.5%
C50Hungarian defence13036.9%53.8%
C44Inverted Hanham4725.5%48.9%
C44Inverted Hungarian5129.4%50.0%
C36KGA, Abbazia defence (classical defence, modern defence[!])2924.1%53.4%
C36KGA, Abbazia defence, Botvinnik variation20.0%100.0%
C36KGA, Abbazia defence, modern variation22433.0%45.1%
C39KGA, Allgaier gambit10.0%100.0%
C34KGA, Becker defence4918.4%39.8%
C37KGA, Blachly gambit2416.7%29.2%
C34KGA, Bonsch-Osmolovsky variation4725.5%42.6%
C33KGA, Breyer gambit2040.0%30.0%
C33KGA, Carrera (Basman) gambit3531.4%41.4%
C35KGA, Cunningham defence10922.0%45.9%
C35KGA, Cunningham, Bertin gambit20.0%50.0%
C35KGA, Cunningham, Euwe defence6830.9%50.7%
C34KGA, Fischer defence23722.8%47.3%
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 defence5715.8%37.7%
C39KGA, Kieseritsky, Berlin defence, 6.Bc45630.4%45.5%
C39KGA, Kieseritsky, Brentano (Campbell) defence10.0%100.0%
C39KGA, Kieseritsky, Kolisch defence10834.3%50.5%
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) defence1861.1%58.3%
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 defence11121.6%51.4%
C37KGA, Silberschmidt gambit20.0%0.0%
C33KGA, Villemson (Steinitz) gambit728.6%42.9%
C33KGA, bishop's gambit14520.0%51.4%
C33KGA, bishop's gambit, Anderssen variation616.7%75.0%
C33KGA, bishop's gambit, Bledow variation5431.5%45.4%
C33KGA, bishop's gambit, Boden defence1020.0%40.0%
C33KGA, bishop's gambit, Bogolyubov variation4214.3%45.2%
C33KGA, bishop's gambit, Boren-Svenonius variation30.0%66.7%
C33KGA, bishop's gambit, Cozio (Morphy) defence3231.3%40.6%
C33KGA, bishop's gambit, Jaenisch variation11125.2%53.2%
C33KGA, bishop's gambit, Lopez-Gianutio counter-gambit3125.8%29.0%
C33KGA, bishop's gambit, Maurian defence2927.6%48.3%
C33KGA, bishop's gambit, McDonnell attack250.0%75.0%
C33KGA, bishop's gambit, Morphy variation4623.9%46.7%
C33KGA, bishop's gambit, Paulsen attack812.5%43.8%
C33KGA, bishop's gambit, Ruy Lopez defence757.1%42.9%
C33KGA, bishop's gambit, Steinitz defence8129.6%45.7%
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-gambit7723.4%50.6%
C31KGD, Falkbeer, 3...e41020.0%50.0%
C31KGD, Falkbeer, 4.d31931.6%68.4%
C32KGD, Falkbeer, 5.de3928.2%52.6%
C32KGD, Falkbeer, Charousek gambit20.0%100.0%
C32KGD, Falkbeer, Charousek variation10.0%0.0%
C32KGD, Falkbeer, Keres variation1100.0%50.0%
C31KGD, Falkbeer, Morphy gambit742.9%64.3%
C31KGD, Falkbeer, Nimzovich variation70.0%42.9%
C32KGD, Falkbeer, Reti variation366.7%33.3%
C31KGD, Falkbeer, Rubinstein 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-gambit6023.3%48.3%
C30KGD, Norwalde variation1428.6%50.0%
C30KGD, classical counter-gambit616.7%58.3%
C30KGD, classical variation24421.7%46.5%
C30KGD, classical, 4.c316226.5%60.8%
C30KGD, classical, Heath variation366.7%33.3%
C30KGD, classical, Marshall attack1127.3%50.0%
C30KGD, classical, Reti variation616.7%75.0%
C30KGD, classical, Soldatenkov variation1225.0%54.2%
C30KGD, classical, Svenonius variation520.0%50.0%
B00KP, Colorado counter1631.3%59.4%
C20KP, Indian opening25027.2%50.4%
C20KP, King's head opening1631.3%59.4%
C20KP, Lopez opening6235.5%45.2%
C20KP, Mengarini's opening7817.9%56.4%
C20KP, Napoleon's opening1540.0%53.3%
B00KP, Nimzovich defence265124.1%57.6%
B00KP, Nimzovich defence, Bogolyubov variation27617.8%55.6%
B00KP, Nimzovich defence, Marshall gambit616.7%41.7%
C20KP, Patzer opening2931.0%56.9%
A50Kevitz-Trajkovich defence116027.2%53.6%
E60King's Indian defence168223.5%53.2%
E61King's Indian defence, 3.Nc3139628.7%54.2%
E72King's Indian with e4 & g34630.4%56.5%
E60King's Indian, 3.Nf3477329.1%55.5%
E60King's Indian, 3.g3232431.2%55.6%
E60King's Indian, 3.g3, counterthrust variation1631.3%46.9%
E70King's Indian, 4.e489526.0%54.6%
E73King's Indian, 5.Be211221.4%50.0%
E90King's Indian, 5.Nf3123823.7%54.2%
E91King's Indian, 6.Be289825.1%60.2%
E92King's Indian, Andersson variation48139.9%53.8%
E60King's Indian, Anti-Gruenfeld14122.7%46.1%
E73King's Indian, Averbakh system91529.0%52.2%
E74King's Indian, Averbakh, 6...c527425.9%62.2%
E75King's Indian, Averbakh, main line4831.3%49.0%
E60King's Indian, Danube gambit1631.3%53.1%
A48King's Indian, East Indian defence168429.3%53.4%
E76King's Indian, Four pawns attack31933.2%59.6%
E77King's Indian, Four pawns attack24332.5%53.3%
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 line16432.3%50.9%
E79King's Indian, Four pawns attack, main line12845.3%57.0%
E78King's Indian, Four pawns attack, with Be2 and Nf33036.7%51.7%
E92King's Indian, Gligoric-Taimanov system256524.8%57.5%
E91King's Indian, Kazakh variation70129.4%57.5%
E70King's Indian, Kramer system24922.5%53.4%
E90King's Indian, Larsen variation12128.1%55.4%
A48King's Indian, London system111128.8%51.8%
E71King's Indian, Makagonov system (5.h3)91726.1%55.6%
E92King's Indian, Petrosian system20319.2%57.4%
E93King's Indian, Petrosian system, Keres variation2828.6%50.0%
E92King's Indian, Petrosian system, Stein variation122327.3%53.2%
E93King's Indian, Petrosian system, main line23823.9%55.3%
E72King's Indian, Pomar system1553.3%60.0%
E80King's Indian, Saemisch variation53225.0%55.0%
E81King's Indian, Saemisch, 5...O-O237425.5%54.1%
E83King's Indian, Saemisch, 6...Nc611918.5%56.3%
E81King's Indian, Saemisch, Byrne variation8930.3%51.1%
E83King's Indian, Saemisch, Panno formation22423.7%52.9%
E84King's Indian, Saemisch, Panno main line86622.1%51.9%
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 c656322.7%55.1%
E87King's Indian, Saemisch, orthodox, 7.d551319.9%62.8%
E88King's Indian, Saemisch, orthodox, 7.d5 c653131.1%55.3%
E87King's Indian, Saemisch, orthodox, Bronstein variation1127.3%59.1%
E73King's Indian, Semi-Averbakh system5125.5%53.9%
E61King's Indian, Smyslov system14626.0%49.3%
A48King's Indian, Torre attack187029.4%50.1%
E90King's Indian, Zinnowitz variation10330.1%52.9%
E70King's Indian, accelerated Averbakh system13327.1%50.4%
E92King's Indian, classical variation2128.6%47.6%
E62King's Indian, fianchetto variation15529.0%54.5%
E62King's Indian, fianchetto with ...Nc634425.0%56.7%
E67King's Indian, fianchetto with ...Nd720329.6%63.1%
A49King's Indian, fianchetto without c4225628.3%54.1%
E62King's Indian, fianchetto, Kavalek (Bronstein) variation115929.8%58.4%
E62King's Indian, fianchetto, Larsen system32629.1%54.1%
E63King's Indian, fianchetto, Panno variation330028.6%57.1%
E62King's Indian, fianchetto, Simagin variation16928.4%68.0%
E62King's Indian, fianchetto, Uhlmann (Szabo) variation51930.3%58.3%
E66King's Indian, fianchetto, Yugoslav Panno47127.0%55.9%
E64King's Indian, fianchetto, Yugoslav system19524.1%56.7%
E65King's Indian, fianchetto, Yugoslav, 7.O-O24531.4%57.8%
E69King's Indian, fianchetto, classical main line126130.5%60.0%
E67King's Indian, fianchetto, classical variation100531.7%55.4%
E68King's Indian, fianchetto, classical variation, 8.e4213229.1%58.7%
E62King's Indian, fianchetto, lesser Simagin (Spassky) variation46324.6%58.5%
E94King's Indian, orthodox variation191531.4%57.0%
E94King's Indian, orthodox, 7...Nbd7261926.9%56.9%
E95King's Indian, orthodox, 7...Nbd7, 8.Re198826.8%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)866725.1%55.5%
E98King's Indian, orthodox, Aronin-Taimanov, 9.Ne1317121.3%59.2%
E99King's Indian, orthodox, Aronin-Taimanov, Benko attack4231.0%44.0%
E97King's Indian, orthodox, Aronin-Taimanov, bayonet attack314028.6%57.7%
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 accepted922.2%44.4%
C40King's knight opening616.7%41.7%
C34King's knight's gambit8016.3%45.6%
C38King's knight's gambit911.1%50.0%
C39King's knight's gambit20.0%50.0%
C20King's pawn game29120.3%52.1%
C44King's pawn game7126.8%47.2%
C50King's pawn game38923.1%54.2%
B00King's pawn opening300426.1%53.7%
C44Konstantinopolsky opening2416.7%45.8%
A00Lasker simul special14027.9%46.8%
C40Latvian counter-gambit15324.8%60.8%
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)267025.1%49.7%
A00Mieses opening50918.5%52.8%
A40Modern defence219024.8%56.3%
A41Modern defence10427.9%55.3%
A42Modern defence, Averbakh system100529.4%57.5%
A42Modern defence, Averbakh system, Kotov variation72724.5%58.5%
A42Modern defence, Averbakh system, Randspringer variation728.6%28.6%
A03Mujannah opening70.0%42.9%
D70Neo-Gruenfeld (Kemeri) defence19241.1%54.4%
D70Neo-Gruenfeld defence43622.7%51.3%
D73Neo-Gruenfeld, 5.Nf3125540.2%53.1%
D71Neo-Gruenfeld, 5.cd22540.4%54.9%
D72Neo-Gruenfeld, 5.cd, main line35732.2%51.7%
D77Neo-Gruenfeld, 6.O-O194934.0%53.6%
D78Neo-Gruenfeld, 6.O-O c6191932.4%53.6%
D79Neo-Gruenfeld, 6.O-O, main line90936.7%53.7%
D74Neo-Gruenfeld, 6.cd Nxd5, 7.O-O56933.7%57.6%
D76Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb6130834.1%55.7%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc342341.8%54.5%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.dc4528.9%61.1%
E00Neo-Indian (Seirawan) attack58224.2%49.6%
E20Nimzo-Indian defence28029.6%46.6%
E40Nimzo-Indian, 4.e323327.0%54.3%
E46Nimzo-Indian, 4.e3 O-O19636.2%51.3%
E47Nimzo-Indian, 4.e3 O-O, 5.Bd389137.0%55.3%
E48Nimzo-Indian, 4.e3 O-O, 5.Bd3 d570232.3%51.9%
E41Nimzo-Indian, 4.e3 c585934.0%50.9%
E42Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein)209731.7%55.3%
E51Nimzo-Indian, 4.e3 e8g8, 5.Nf3 d7d529133.7%50.5%
E50Nimzo-Indian, 4.e3 e8g8, 5.Nf3, without ...d514431.9%56.9%
E49Nimzo-Indian, 4.e3, Botvinnik system44729.3%48.2%
E45Nimzo-Indian, 4.e3, Bronstein (Byrne) variation70931.0%54.4%
E53Nimzo-Indian, 4.e3, Gligoric system with 7...Nbd713239.4%55.3%
E54Nimzo-Indian, 4.e3, Gligoric system with 7...dc226835.6%53.6%
E55Nimzo-Indian, 4.e3, Gligoric system, Bronstein variation299634.8%53.5%
E54Nimzo-Indian, 4.e3, Gligoric system, Smyslov variation5232.7%56.7%
E53Nimzo-Indian, 4.e3, Keres variation12133.9%46.7%
E51Nimzo-Indian, 4.e3, Ragozin variation5350.9%57.5%
E40Nimzo-Indian, 4.e3, Taimanov variation11826.3%52.1%
E59Nimzo-Indian, 4.e3, main line209230.8%54.2%
E52Nimzo-Indian, 4.e3, main line with ...b688832.5%52.5%
E53Nimzo-Indian, 4.e3, main line with ...c5164937.1%52.0%
E56Nimzo-Indian, 4.e3, main line with 7...Nc6131530.5%54.5%
E58Nimzo-Indian, 4.e3, main line with 8...Bxc3295828.7%48.7%
E57Nimzo-Indian, 4.e3, main line with 8...dc and 9...cd2927.6%72.4%
E43Nimzo-Indian, Fischer variation64430.3%54.9%
E44Nimzo-Indian, Fischer variation, 5.Ne292525.7%56.6%
E20Nimzo-Indian, Kmoch variation111225.4%54.0%
E30Nimzo-Indian, Leningrad variation49230.9%51.4%
E30Nimzo-Indian, Leningrad, ...b5 gambit3644.4%41.7%
E31Nimzo-Indian, Leningrad, main line21921.5%45.9%
E20Nimzo-Indian, Mikenas attack1926.3%34.2%
E46Nimzo-Indian, Reshevsky variation150828.3%52.4%
E20Nimzo-Indian, Romanishin-Kasparov (Steiner) system79528.8%49.7%
E24Nimzo-Indian, Saemisch variation21532.6%49.3%
E25Nimzo-Indian, Saemisch variation12636.5%53.2%
E26Nimzo-Indian, Saemisch variation14526.2%48.3%
E27Nimzo-Indian, Saemisch variation5131.4%51.0%
E28Nimzo-Indian, Saemisch variation10232.4%54.4%
E24Nimzo-Indian, Saemisch, Botvinnik variation3327.3%47.0%
E29Nimzo-Indian, Saemisch, Capablanca variation13040.0%50.8%
E25Nimzo-Indian, Saemisch, Keres variation41829.9%51.8%
E26Nimzo-Indian, Saemisch, O'Kelly variation4126.8%40.2%
E25Nimzo-Indian, Saemisch, Romanovsky variation16542.4%49.1%
E29Nimzo-Indian, Saemisch, main line13630.9%58.8%
E46Nimzo-Indian, Simagin variation11428.9%48.7%
E22Nimzo-Indian, Spielmann variation16035.0%53.8%
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 variation887632.5%53.1%
E33Nimzo-Indian, classical, 4...Nc614223.2%61.6%
E38Nimzo-Indian, classical, 4...c579831.0%57.0%
E32Nimzo-Indian, classical, Adorjan gambit19528.7%57.9%
E36Nimzo-Indian, classical, Botvinnik variation1533.3%56.7%
E33Nimzo-Indian, classical, Milner-Barry (Zurich) variation60127.0%53.4%
E34Nimzo-Indian, classical, Noa variation84733.9%52.5%
E36Nimzo-Indian, classical, Noa variation, 5.a347432.7%56.0%
E35Nimzo-Indian, classical, Noa variation, 5.cd ed98933.4%49.6%
E36Nimzo-Indian, classical, Noa variation, main line50.0%20.0%
E37Nimzo-Indian, classical, Noa variation, main line, 7.Qc215632.1%59.6%
E39Nimzo-Indian, classical, Pirc variation139632.6%56.3%
E37Nimzo-Indian, classical, San Remo variation1241.7%54.2%
E41Nimzo-Indian, e3, Huebner variation95025.7%49.4%
E21Nimzo-Indian, three knights variation350429.1%51.7%
E21Nimzo-Indian, three knights, Euwe variation837.5%56.3%
E21Nimzo-Indian, three knights, Korchnoi variation4334.9%61.6%
A01Nimzovich-Larsen attack94426.1%51.3%
A01Nimzovich-Larsen attack, Dutch variation16721.0%50.6%
A01Nimzovich-Larsen attack, English variation42027.9%51.3%
A01Nimzovich-Larsen attack, Indian variation77626.5%53.5%
A01Nimzovich-Larsen attack, Polish variation2835.7%53.6%
A01Nimzovich-Larsen attack, classical variation185326.9%48.5%
A01Nimzovich-Larsen attack, modern variation300030.8%49.9%
A01Nimzovich-Larsen attack, symmetrical variation61730.3%49.8%
B06Norwegian defence250.0%75.0%
A00Novosibirsk opening258.0%48.0%
A43Old Benoni defence264726.2%55.5%
A44Old Benoni defence6225.8%66.1%
A43Old Benoni, Franco-Benoni defence17025.9%62.4%
A43Old Benoni, Mujannah formation13721.2%63.9%
A43Old Benoni, Schmid's system2429.2%52.1%
A41Old Indian defence332525.7%50.8%
A53Old Indian defence184129.2%55.4%
A54Old Indian, Dus-Khotimirsky variation812.5%68.8%
A53Old Indian, Janowski variation66120.1%58.3%
A41Old Indian, Tartakower (Wade) variation335324.8%58.5%
A54Old Indian, Ukrainian variation20130.3%50.5%
A54Old Indian, Ukrainian variation, 4.Nf332326.3%54.6%
A55Old Indian, main line120927.0%62.5%
B00Owen defence87426.4%56.5%
A45Paleface attack19119.9%41.4%
C42Petrov three knights game54628.4%53.9%
C42Petrov's defence94324.9%53.9%
C42Petrov, Cochrane gambit4314.0%46.5%
C42Petrov, Cozio (Lasker) attack28832.3%51.6%
C42Petrov, Damiano variation3930.8%53.8%
C42Petrov, French attack1513.3%66.7%
C42Petrov, Italian variation15519.4%51.0%
C42Petrov, Kaufmann attack30232.5%57.3%
C42Petrov, Nimzovich attack72933.5%54.2%
C42Petrov, Paulsen attack26727.3%45.9%
C43Petrov, Urusov gambit468.7%45.7%
C42Petrov, classical attack217930.8%56.8%
C42Petrov, classical attack, Berger variation1936.8%55.3%
C42Petrov, classical attack, Chigorin variation111834.2%54.4%
C42Petrov, classical attack, Jaenisch variation368735.0%56.6%
C42Petrov, classical attack, Krause variation1100.0%50.0%
C42Petrov, classical attack, Marshall variation244129.4%55.2%
C42Petrov, classical attack, Mason variation9639.6%63.5%
C42Petrov, classical attack, Tarrasch variation933.3%83.3%
C42Petrov, classical attack, close variation20829.8%54.8%
C43Petrov, modern (Steinitz) attack15524.5%60.6%
C43Petrov, modern attack, Bardeleben variation1717.6%67.6%
C43Petrov, modern attack, Steinitz variation1127.3%59.1%
C43Petrov, modern attack, Symmetrical variation492931.3%53.8%
C43Petrov, modern attack, Trifunovic variation8534.1%51.2%
C43Petrov, modern attack, main line50531.5%57.9%
C41Philidor's defence57129.4%56.2%
C41Philidor, Boden variation1910.5%52.6%
C41Philidor, Hanham variation8337.3%60.8%
C41Philidor, Hanham, Delmar variation850.0%75.0%
C41Philidor, Hanham, Kmoch variation20.0%50.0%
C41Philidor, Hanham, Krause variation3030.0%68.3%
C41Philidor, Hanham, Schlechter variation6726.9%62.7%
C41Philidor, Hanham, Steiner variation3330.3%66.7%
C41Philidor, Improved Hanham variation129827.3%56.5%
C41Philidor, Larsen variation7724.7%68.2%
C41Philidor, Lopez counter-gambit1513.3%80.0%
C41Philidor, Nimzovich (Jaenisch) variation9131.9%48.9%
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 variation1833.3%55.6%
C41Philidor, Philidor counter-gambit, del Rio attack540.0%60.0%
C41Philidor, Steinitz variation1421.4%53.6%
C41Philidor, exchange variation135226.1%58.2%
B07Pirc defence292126.1%54.7%
B07Pirc, 150 attack60129.3%53.1%
B09Pirc, Austrian attack78328.2%58.3%
B09Pirc, Austrian attack, 6.Bd3414730.6%57.7%
B09Pirc, Austrian attack, 6.Be377725.6%55.3%
B09Pirc, Austrian attack, 6.e531228.8%59.3%
B09Pirc, Austrian attack, Ljubojevic variation1723.5%70.6%
B09Pirc, Austrian attack, dragon formation119531.5%53.7%
B07Pirc, Byrne variation45124.6%55.5%
B07Pirc, Chinese variation20.0%50.0%
B07Pirc, Holmov system4729.8%53.2%
B07Pirc, Sveshnikov system107027.2%52.2%
B07Pirc, Ufimtsev-Pytel variation86523.9%56.0%
B07Pirc, bayonet (Mariotti) attack5320.8%53.8%
B08Pirc, classical (two knights) system95328.8%56.2%
B08Pirc, classical system, 5.Be2504931.4%58.3%
B08Pirc, classical, h3 system69130.1%56.2%
A00Polish (Sokolsky) opening152028.3%50.6%
A40Polish defence35525.4%57.2%
A00Polish, Outflank variation27824.5%49.3%
A00Polish, Tuebingen variation7321.9%52.1%
C44Ponziani counter-gambit20520.0%52.4%
C44Ponziani counter-gambit, Cordel variation10.0%100.0%
C44Ponziani counter-gambit, Schmidt attack10.0%0.0%
C44Ponziani opening17425.9%53.7%
C44Ponziani, Caro variation11935.3%49.6%
C44Ponziani, Jaenisch counter-attack70932.2%46.7%
C44Ponziani, Leonhardt variation5937.3%49.2%
C44Ponziani, Reti variation166.3%53.1%
C44Ponziani, Romanishin variation1060.0%60.0%
C44Ponziani, Steinitz variation10740.2%52.8%
A42Pterodactyl defence111327.1%61.6%
D21QGA, 3.Nf3120225.9%55.2%
D20QGA, 3.e4405829.1%56.1%
D26QGA, 4...e685532.2%53.2%
D24QGA, 4.Nc332931.9%54.3%
D25QGA, 4.e356829.0%57.7%
D22QGA, Alekhine defence39834.7%57.5%
D22QGA, Alekhine defence, Alatortsev variation1050.0%65.0%
D21QGA, Alekhine defense, Borisenko-Furman variation4126.8%35.4%
D24QGA, Bogolyubov variation25416.5%46.9%
D21QGA, Ericson variation2842.9%53.6%
D25QGA, Flohr variation8030.0%62.5%
D22QGA, Haberditz variation23135.1%58.2%
D25QGA, Janowsky-Larsen variation74029.1%55.9%
D20QGA, Linares variation6829.4%51.5%
D23QGA, Mannheim variation52332.3%54.4%
D25QGA, Smyslov variation20531.2%57.6%
D26QGA, classical variation135834.5%54.6%
D26QGA, classical variation, 6.O-O43935.8%58.2%
D27QGA, classical, 6...a6526136.2%53.6%
D28QGA, classical, 7...b527634.4%54.9%
D28QGA, classical, 7.Qe213641.2%55.9%
D29QGA, classical, 8...Bb779031.6%47.8%
D26QGA, classical, Furman variation560.0%50.0%
D27QGA, classical, Geller variation8632.6%43.0%
D27QGA, classical, Rubinstein variation406534.1%55.3%
D29QGA, classical, Smyslov variation9628.1%54.7%
D26QGA, classical, Steinitz variation13647.1%58.8%
D30QGD278832.1%51.8%
D51QGD3818.4%64.5%
D52QGD39930.1%55.9%
D30QGD Slav109131.6%52.5%
D15QGD Slav accepted33228.3%51.2%
D16QGD Slav accepted, Alapin variation27121.8%69.9%
D10QGD Slav defence530930.0%54.3%
D10QGD Slav defence, Alekhine variation42621.4%56.2%
D10QGD Slav defence, exchange variation294030.9%52.0%
D11QGD Slav, 3.Nf3532528.7%54.2%
D15QGD Slav, 4.Nc3409628.8%52.7%
D11QGD Slav, 4.e3525829.6%55.3%
D12QGD Slav, 4.e3 Bf5868928.1%54.3%
D15QGD Slav, 5.e3 (Alekhine variation)33225.3%49.1%
D12QGD Slav, Amsterdam variation7335.6%47.9%
D11QGD Slav, Breyer variation27629.0%53.6%
D17QGD Slav, Carlsbad variation68832.6%52.3%
D17QGD Slav, Czech defence90835.2%53.9%
D18QGD Slav, Dutch variation91831.6%57.5%
D19QGD Slav, Dutch variation270929.3%56.5%
D19QGD Slav, Dutch variation, main line50234.7%52.0%
D18QGD Slav, Dutch, Lasker variation2913.8%65.5%
D17QGD Slav, Krause attack85426.6%58.1%
D12QGD Slav, Landau variation1100.0%50.0%
D15QGD Slav, Schlechter variation33630.4%55.7%
D30QGD Slav, Semmering variation22831.6%50.4%
D15QGD Slav, Slav gambit34726.2%46.8%
D16QGD Slav, Smyslov variation13127.5%58.8%
D16QGD Slav, Soultanbeieff variation26138.7%56.9%
D16QGD Slav, Steiner variation37428.3%59.1%
D15QGD Slav, Suechting variation9020.0%53.3%
D15QGD Slav, Tolush-Geller gambit32926.4%44.8%
D17QGD Slav, Wiesbaden variation68127.9%58.1%
D10QGD Slav, Winawer counter-gambit31227.9%56.6%
D12QGD Slav, exchange variation44024.8%53.1%
D13QGD Slav, exchange variation140332.4%53.4%
D14QGD Slav, exchange variation, 6.Bf4 Bf579531.6%51.3%
D14QGD Slav, exchange, Trifunovic variation21840.8%50.7%
D43QGD semi-Slav2094029.1%53.5%
D45QGD semi-Slav, 5...Nd7132726.8%51.3%
D44QGD semi-Slav, 5.Bg5 dc42333.6%48.7%
D45QGD semi-Slav, 5.e3144328.6%56.9%
D46QGD semi-Slav, 6.Bd310828.7%51.4%
D47QGD semi-Slav, 7.Bc484827.2%58.1%
D46QGD semi-Slav, Bogolyubov variation44630.3%56.4%
D44QGD semi-Slav, Botvinnik system (anti-Meran)37124.0%47.8%
D46QGD semi-Slav, Chigorin defence85532.7%53.7%
D44QGD semi-Slav, Ekstrom variation5320.8%38.7%
D43QGD semi-Slav, Hastings variation825.0%25.0%
D48QGD semi-Slav, Meran36323.1%47.9%
D47QGD semi-Slav, Meran variation320431.3%53.0%
D48QGD semi-Slav, Meran, 8...a6680630.8%48.9%
D49QGD semi-Slav, Meran, Blumenfeld variation55529.9%51.4%
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' variation136129.0%56.0%
D49QGD semi-Slav, Meran, Sozin variation41639.9%49.0%
D49QGD semi-Slav, Meran, Stahlberg variation9032.2%51.7%
D47QGD semi-Slav, Meran, Wade variation2154729.3%52.9%
D48QGD semi-Slav, Meran, old main line20133.3%57.0%
D46QGD semi-Slav, Romih variation23328.3%63.9%
D45QGD semi-Slav, Rubinstein (anti-Meran) system3135.5%59.7%
D45QGD semi-Slav, Stoltz variation3967130.5%52.4%
D45QGD semi-Slav, accelerated Meran (Alekhine variation)367632.7%53.7%
D44QGD semi-Slav, anti-Meran gambit198826.2%60.1%
D44QGD semi-Slav, anti-Meran, Alatortsev system5111.8%60.8%
D44QGD semi-Slav, anti-Meran, Lilienthal variation48321.3%58.7%
D44QGD semi-Slav, anti-Meran, Szabo variation22119.9%41.2%
D47QGD semi-Slav, neo-Meran (Lundin variation)72831.2%56.4%
D45QGD semi-Slav, stonewall defence2619.2%67.3%
D35QGD, 3...Nf620133.3%44.0%
D31QGD, 3.Nc3100028.5%55.3%
D50QGD, 4.Bg532630.7%56.4%
D53QGD, 4.Bg5 Be768736.0%56.0%
D53QGD, 4.Bg5 Be7, 5.e3 O-O3237.5%56.3%
D51QGD, 4.Bg5 Nbd712829.7%56.3%
D37QGD, 4.Nf3660932.4%53.3%
D51QGD, 5...c68928.1%59.0%
D55QGD, 6.Nf336532.6%58.8%
D31QGD, Alapin variation4216.7%41.7%
D08QGD, Albin counter-gambit24736.4%53.0%
D09QGD, Albin counter-gambit, 5.g314333.6%56.6%
D08QGD, Albin counter-gambit, Alapin variation3138.7%61.3%
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 defence8648.8%47.7%
D52QGD, Cambridge Springs defence, 7.cd44732.4%57.4%
D52QGD, Cambridge Springs defence, Argentine variation3324.2%48.5%
D52QGD, Cambridge Springs defence, Bogoljubow variation69529.9%54.4%
D52QGD, Cambridge Springs defence, Capablanca variation4337.2%51.2%
D52QGD, Cambridge Springs defence, Rubinstein variation22531.6%55.3%
D52QGD, Cambridge Springs defence, Yugoslav variation119826.8%58.2%
D50QGD, Canal (Venice) variation30.0%33.3%
D51QGD, Capablanca anti-Cambridge Springs variation1631.3%59.4%
D30QGD, Capablanca variation6020.0%46.7%
D30QGD, Capablanca-Duras variation82128.3%52.5%
D31QGD, Charousek (Petrosian) variation202728.7%53.7%
D07QGD, Chigorin defence236427.5%57.6%
D07QGD, Chigorin defence, Janowski variation58624.1%62.0%
D06QGD, Grau (Sahovic) defence143825.2%56.1%
D35QGD, Harrwitz attack11235.7%50.0%
D30QGD, Hastings variation75635.6%50.7%
D31QGD, Janowski variation21338.0%54.7%
D56QGD, Lasker defence53630.2%52.2%
D57QGD, Lasker defence, Bernstein variation2937.9%50.0%
D56QGD, Lasker defence, Teichmann variation14932.9%60.1%
D57QGD, Lasker defence, main line5435.2%58.3%
D53QGD, Lasker variation922.2%66.7%
D51QGD, Manhattan variation2429.2%56.3%
D06QGD, Marshall defence36229.0%59.8%
D55QGD, Neo-orthodox variation1457.1%64.3%
D55QGD, Neo-orthodox variation, 7.Bh455231.5%53.8%
D55QGD, Neo-orthodox variation, 7.Bxf632237.3%51.6%
D60QGD, Orthodox defence36831.3%58.0%
D63QGD, Orthodox defence11526.1%57.4%
D62QGD, Orthodox defence, 7.Qc2 c5, 8.cd (Rubinstein)28042.5%50.5%
D63QGD, Orthodox defence, 7.Rc135034.0%54.1%
D66QGD, Orthodox defence, Bd3 line38530.6%55.3%
D67QGD, Orthodox defence, Bd3 line6443.8%51.6%
D67QGD, Orthodox defence, Bd3 line, 11.O-O18530.8%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 variation24936.9%52.6%
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)18040.6%58.1%
D64QGD, Orthodox defence, Rubinstein attack, Gruenfeld variation10837.0%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 line2236.4%40.9%
D61QGD, Orthodox defence, Rubinstein variation54630.0%53.5%
D63QGD, Orthodox defence, Swiss (Henneberger) variation21729.0%50.9%
D63QGD, Orthodox defence, Swiss, Karlsbad variation30429.3%52.5%
D68QGD, Orthodox defence, classical variation13936.0%54.7%
D68QGD, Orthodox defence, classical, 13.d1b1 (Maroczy)771.4%64.3%
D68QGD, Orthodox defence, classical, 13.d1c2 (Vidmar)8436.9%58.9%
D69QGD, Orthodox defence, classical, 13.de2458.3%50.0%
D55QGD, Petrosian variation46739.0%52.7%
D55QGD, Pillsbury attack30.0%33.3%
D38QGD, Ragozin variation797932.5%53.7%
D39QGD, Ragozin, Vienna variation153036.8%50.6%
D51QGD, Rochlin variation10.0%0.0%
D50QGD, Semi-Tarrasch3452.9%61.8%
D40QGD, Semi-Tarrasch defence101133.3%51.6%
D40QGD, Semi-Tarrasch defence, Pillsbury variation4940.8%53.1%
D41QGD, Semi-Tarrasch with e336036.9%54.6%
D41QGD, Semi-Tarrasch, 5.cd99936.5%57.5%
D42QGD, Semi-Tarrasch, 7.Bd366336.0%57.7%
D41QGD, Semi-Tarrasch, Kmoch variation3053.3%60.0%
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 variation6832.4%47.1%
D30QGD, Spielmann variation540.0%80.0%
D30QGD, Stonewall variation333.3%83.3%
D32QGD, Tarrasch defence44331.6%55.1%
D32QGD, Tarrasch defence, 4.cd ed3125.8%48.4%
D32QGD, Tarrasch defence, Marshall gambit2035.0%52.5%
D32QGD, Tarrasch defence, Tarrasch gambit728.6%42.9%
D34QGD, Tarrasch, Bogolyubov variation742.9%21.4%
D33QGD, Tarrasch, Folkestone (Swedish) variation6536.9%58.5%
D33QGD, Tarrasch, Prague variation13633.1%59.2%
D34QGD, Tarrasch, Prague variation, 7...Be743731.1%58.8%
D34QGD, Tarrasch, Prague variation, 9.Bg5119537.7%57.5%
D34QGD, Tarrasch, Prague variation, Normal position121634.3%58.1%
D34QGD, Tarrasch, Reti variation6339.7%54.8%
D33QGD, Tarrasch, Schlechter-Rubinstein system1323.1%50.0%
D33QGD, Tarrasch, Schlechter-Rubinstein system, Rey Ardid variation1100.0%50.0%
D34QGD, Tarrasch, Stoltz variation20.0%100.0%
D33QGD, Tarrasch, Wagner variation2828.6%60.7%
D32QGD, Tarrasch, von Hennig-Schara gambit8630.2%58.1%
D58QGD, Tartakower (Makagonov-Bondarevsky) system1304232.7%52.6%
D59QGD, Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd556437.4%51.5%
D59QGD, Tartakower variation20345.8%41.1%
D30QGD, Vienna variation114339.7%52.3%
D37QGD, classical variation (5.Bf4)815132.8%53.6%
D35QGD, exchange variation38832.2%55.8%
D35QGD, exchange, Saemisch variation31328.8%53.7%
D35QGD, exchange, chameleon variation1827.8%63.9%
D35QGD, exchange, positional line261527.6%53.3%
D35QGD, exchange, positional line, 5...c6182228.8%55.0%
D36QGD, exchange, positional line, 6.Qc243633.5%51.4%
D31QGD, semi-Slav134031.1%54.2%
D31QGD, semi-Slav, Abrahams variation81030.7%44.8%
D31QGD, semi-Slav, Junge variation3119.4%61.3%
D31QGD, semi-Slav, Koomen variation450.0%50.0%
D31QGD, semi-Slav, Marshall gambit289928.7%55.0%
D31QGD, semi-Slav, Noteboom variation74228.4%52.8%
D06QGD, symmetrical (Austrian) defence11429.8%56.1%
C40QP counter-gambit (elephant gambit)19717.8%63.7%
C40QP counter-gambit, Maroczy gambit7125.4%62.0%
D06Queen's Gambit2119.0%57.1%
A50Queen's Indian accelerated34929.2%57.9%
A47Queen's Indian defence97828.1%53.5%
E12Queen's Indian defence52129.0%50.6%
E12Queen's Indian, 4.Nc3692529.3%52.6%
E12Queen's Indian, 4.Nc3, Botvinnik variation11228.6%49.1%
E13Queen's Indian, 4.Nc3, main line36825.5%55.7%
E14Queen's Indian, 4.e3282729.9%52.2%
E15Queen's Indian, 4.g3186441.0%55.2%
E15Queen's Indian, 4.g3 Bb726130.7%53.6%
E17Queen's Indian, 5.Bg2 Be79434.0%48.9%
E14Queen's Indian, Averbakh variation728.6%28.6%
E15Queen's Indian, Buerger variation3225.0%53.1%
E16Queen's Indian, Capablanca variation42133.0%57.4%
E17Queen's Indian, Euwe variation10436.5%60.6%
A47Queen's Indian, Marienbad system14331.5%49.3%
A47Queen's Indian, Marienbad system, Berg variation922.2%55.6%
E12Queen's Indian, Miles variation146531.5%53.3%
E15Queen's Indian, Nimzovich variation (exaggerated fianchetto)3237229.5%54.9%
E17Queen's Indian, Opovcensky variation135830.0%57.9%
E12Queen's Indian, Petrosian system1144331.9%53.4%
E16Queen's Indian, Riumin variation42332.6%56.3%
E15Queen's Indian, Rubinstein variation12923.3%51.9%
E16Queen's Indian, Yates variation81830.8%59.4%
E17Queen's Indian, anti-Queen's Indian system29334.5%54.1%
E17Queen's Indian, old main line, 6.O-O94731.4%56.4%
E18Queen's Indian, old main line, 7.Nc3313133.3%56.2%
E19Queen's Indian, old main line, 9.Qxc3172233.4%54.8%
A41Queen's Pawn494223.4%56.2%
D02Queen's bishop game359028.4%51.3%
D20Queen's gambit accepted203230.7%55.3%
D23Queen's gambit accepted18129.8%49.7%
D30Queen's gambit declined684831.0%53.3%
A40Queen's pawn564926.0%53.6%
A45Queen's pawn game541826.4%51.3%
A46Queen's pawn game628427.8%54.0%
A50Queen's pawn game202228.7%55.7%
D00Queen's pawn game204925.2%51.3%
D02Queen's pawn game1456127.7%52.9%
D04Queen's pawn game237331.1%53.2%
D05Queen's pawn game213529.3%53.0%
E00Queen's pawn game148227.7%54.0%
E10Queen's pawn game696231.6%54.6%
D02Queen's pawn game, Chigorin variation175625.0%54.9%
D02Queen's pawn game, Krause variation84433.6%51.4%
D05Queen's pawn game, Rubinstein (Colle-Zukertort) variation78732.5%55.8%
D05Queen's pawn game, Zukertort variation4129.3%56.1%
A45Queen's pawn, Bronstein gambit1711.8%47.1%
A40Queen's pawn, Charlick (Englund) gambit60.0%83.3%
D00Queen's pawn, Chigorin variation152122.3%51.8%
A40Queen's pawn, English defence67221.7%56.3%
A40Queen's pawn, Franco-Indian (Keres) defence348328.7%55.8%
A40Queen's pawn, Keres defence365627.5%55.5%
A40Queen's pawn, Lundin (Kevitz-Mikenas) defence81827.0%56.9%
D00Queen's pawn, Mason variation204025.1%52.0%
D00Queen's pawn, Mason variation, Steinitz counter-gambit60231.2%50.5%
E60Queen's pawn, Mengarini attack14124.8%50.7%
A46Queen's pawn, Torre attack140426.8%52.1%
A46Queen's pawn, Torre attack, Wagner gambit2821.4%39.3%
A46Queen's pawn, Yusupov-Rubinstein system131230.4%51.1%
D00Queen's pawn, stonewall attack10225.5%49.0%
A09Reti accepted131127.5%53.1%
A09Reti accepted, Keres variation12422.6%59.7%
A04Reti opening1564328.1%53.0%
A05Reti opening986928.8%52.5%
A06Reti opening338927.0%53.3%
A09Reti opening105127.2%53.7%
A04Reti v Dutch247226.5%56.9%
A05Reti, King's Indian attack229029.7%55.7%
A07Reti, King's Indian attack335133.8%52.8%
A08Reti, King's Indian attack120130.5%54.9%
A07Reti, King's Indian attack (Barcza system)1039329.8%53.0%
A07Reti, King's Indian attack (with ...c5)43425.6%48.5%
A08Reti, King's Indian attack, French variation114331.0%50.7%
A07Reti, King's Indian attack, Keres variation75831.1%51.8%
A07Reti, King's Indian attack, Pachman system25323.3%52.0%
A05Reti, King's Indian attack, Reti-Smyslov variation14727.9%50.7%
A05Reti, King's Indian attack, Spassky's variation81929.9%53.3%
A07Reti, King's Indian attack, Yugoslav variation498531.4%53.8%
A04Reti, Lisitsin gambit deferred5820.7%43.1%
A06Reti, Nimzovich-Larsen attack418131.3%51.2%
A04Reti, Pirc-Lisitsin gambit15822.2%58.5%
A04Reti, Wade defence540.0%80.0%
A09Reti, advance variation163925.4%47.7%
A06Reti, old Indian attack32324.5%52.5%
B00Reversed Grob (Borg/Basman defence/macho Grob)17117.0%52.3%
D01Richter-Veresov attack126326.6%46.1%
D01Richter-Veresov attack, Richter variation6741.8%43.3%
D01Richter-Veresov attack, Veresov variation5619.6%54.5%
B06Robatsch (modern) defence1023129.4%56.3%
B06Robatsch defence131128.3%58.8%
B07Robatsch defence, Geller's system156629.9%57.0%
B06Robatsch defence, Gurgenidze variation80924.1%63.7%
B06Robatsch defence, Pseudo-Austrian attack97125.7%59.1%
A41Robatsch defence, Rossolimo variation18627.4%54.0%
B06Robatsch defence, Two knights variation59730.3%57.9%
B06Robatsch defence, Two knights, Suttles variation248034.4%58.2%
B06Robatsch defence, three pawns attack10016.0%55.0%
C50Rousseau gambit50.0%60.0%
C70Ruy Lopez7628.9%52.6%
C60Ruy Lopez (Spanish opening)15822.8%53.2%
C78Ruy Lopez, ...b5 & ...d610027.0%47.5%
C78Ruy Lopez, 5.O-O277031.4%54.9%
C70Ruy Lopez, Alapin's defence deferred70.0%42.9%
C77Ruy Lopez, Anderssen variation142429.8%49.9%
C78Ruy Lopez, Archangelsk (counterthrust) variation371929.0%54.1%
C65Ruy Lopez, Berlin defence505129.6%51.4%
C65Ruy Lopez, Berlin defence, 4.O-O20927.8%63.2%
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 variation58429.6%54.0%
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 variation4341.9%55.8%
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 variation16439.0%53.0%
C67Ruy Lopez, Berlin defence, open variation838934.4%52.7%
C61Ruy Lopez, Bird's defence39031.0%57.6%
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 gambit5427.8%71.3%
C60Ruy Lopez, Cozio defence42428.3%58.0%
C70Ruy Lopez, Cozio defence deferred16434.8%52.1%
C60Ruy Lopez, Cozio defence, Paulsen variation3737.8%54.1%
C85Ruy Lopez, Exchange variation doubly deferred (DERLD)165731.3%53.1%
C70Ruy Lopez, Graz variation1136.4%54.5%
C60Ruy Lopez, Lucena defence2321.7%45.7%
C89Ruy Lopez, Marshall counter-attack364133.5%51.7%
C89Ruy Lopez, Marshall counter-attack, 11...c6107334.6%47.9%
C89Ruy Lopez, Marshall, Herman Steiner variation345.9%50.0%
C89Ruy Lopez, Marshall, Kevitz variation1428.6%42.9%
C89Ruy Lopez, Marshall, main line, 12.d2d4127327.4%55.7%
C89Ruy Lopez, Marshall, main line, 14...Qh394240.8%48.3%
C89Ruy Lopez, Marshall, main line, Spassky variation1100.0%50.0%
C78Ruy Lopez, Moeller defence79730.2%52.1%
C77Ruy Lopez, Morphy defence41133.1%54.5%
C77Ruy Lopez, Morphy defence, Duras variation10730.8%48.1%
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 defence39426.9%57.1%
C70Ruy Lopez, Schliemann defence deferred4615.2%57.6%
C63Ruy Lopez, Schliemann defence, Berger variation71133.6%56.3%
C74Ruy Lopez, Siesta, Kopayev variation12827.3%52.7%
C79Ruy Lopez, Steinitz defence deferred (Russian defence)36033.1%52.4%
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-attack29026.9%53.1%
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) attack66733.0%50.5%
C77Ruy Lopez, Wormald attack, Gruenfeld variation450.0%75.0%
C86Ruy Lopez, Worrall attack9726.8%57.7%
C86Ruy Lopez, Worrall attack, sharp line27532.4%49.6%
C86Ruy Lopez, Worrall attack, solid line25530.6%51.0%
C64Ruy Lopez, classical (Cordel) defence69931.8%51.9%
C64Ruy Lopez, classical defence, 4.c345028.2%52.3%
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, closed419827.3%48.2%
C96Ruy Lopez, closed (10...c5)124129.7%59.3%
C96Ruy Lopez, closed (8...Na5)5626.8%52.7%
C90Ruy Lopez, closed (with ...d6)242827.6%49.3%
C66Ruy Lopez, closed Berlin defence, Bernstein variation3438.2%45.6%
C66Ruy Lopez, closed Berlin defence, Chigorin variation40.0%75.0%
C66Ruy Lopez, closed Berlin defence, Showalter variation6747.8%61.2%
C66Ruy Lopez, closed Berlin defence, Wolf variation12941.1%55.4%
C84Ruy Lopez, closed defence123732.3%51.9%
C88Ruy Lopez, closed, 7...O-O837029.8%51.8%
C88Ruy Lopez, closed, 7...d6, 8.d413124.4%38.2%
C88Ruy Lopez, closed, 8.c34825.0%50.0%
C91Ruy Lopez, closed, 9.d4388827.1%56.0%
C92Ruy Lopez, closed, 9.h356626.9%55.7%
C87Ruy Lopez, closed, Averbach variation39230.1%57.4%
C88Ruy Lopez, closed, Balla variation2937.9%63.8%
C91Ruy Lopez, closed, Bogolyubov variation632632.1%51.8%
C96Ruy Lopez, closed, Borisenko defence8228.0%57.9%
C94Ruy Lopez, closed, Breyer defence12237.7%53.3%
C95Ruy Lopez, closed, Breyer, Borisenko variation235330.2%56.3%
C95Ruy Lopez, closed, Breyer, Gligoric variation7119.7%66.2%
C95Ruy Lopez, closed, Breyer, Simagin variation7944.3%62.7%
C97Ruy Lopez, closed, Chigorin defence175322.9%60.1%
C98Ruy Lopez, closed, Chigorin, 12...Nc626426.9%63.8%
C99Ruy Lopez, closed, Chigorin, 12...c5d4207234.2%59.0%
C98Ruy Lopez, closed, Chigorin, Rauzer attack10.0%0.0%
C92Ruy Lopez, closed, Flohr-Zaitsev system (Lenzerheide variation)358332.5%53.9%
C96Ruy Lopez, closed, Keres (...Nd7) defence32938.6%60.9%
C92Ruy Lopez, closed, Keres (9...a5) variation4922.4%60.2%
C92Ruy Lopez, closed, Kholmov variation19826.8%58.8%
C90Ruy Lopez, closed, Lutikov variation2948.3%51.7%
C90Ruy Lopez, closed, Pilnik variation311426.0%52.3%
C92Ruy Lopez, closed, Ragozin-Petrosian (`Keres') variation31133.1%64.8%
C96Ruy Lopez, closed, Rossolimo defence616.7%75.0%
C93Ruy Lopez, closed, Smyslov defence25033.2%57.8%
C90Ruy Lopez, closed, Suetin variation5625.0%50.0%
C88Ruy Lopez, closed, anti-Marshall 8.a4163828.9%52.1%
C84Ruy Lopez, closed, centre attack22432.6%50.2%
C68Ruy Lopez, exchange variation33825.1%56.7%
C69Ruy Lopez, exchange variation, 5.O-O77630.2%53.9%
C69Ruy Lopez, exchange variation, Alapin gambit15932.1%53.1%
C68Ruy Lopez, exchange, Alekhine variation7732.5%43.5%
C69Ruy Lopez, exchange, Bronstein variation54730.7%51.4%
C69Ruy Lopez, exchange, Gligoric variation61935.7%53.7%
C68Ruy Lopez, exchange, Keres variation28636.7%50.5%
C68Ruy Lopez, exchange, Romanovsky variation1323.1%50.0%
C60Ruy Lopez, fianchetto (Smyslov/Barnes) defence51135.2%53.0%
C70Ruy Lopez, fianchetto defence deferred2748.1%61.1%
C77Ruy Lopez, four knights (Tarrasch) variation30331.0%55.8%
C71Ruy Lopez, modern Steinitz defence14529.0%51.7%
C74Ruy Lopez, modern Steinitz defence7139.4%56.3%
C75Ruy Lopez, modern Steinitz defence31327.5%57.2%
C72Ruy Lopez, modern Steinitz defence, 5.O-O54730.0%56.5%
C73Ruy Lopez, modern Steinitz defence, Alapin variation32727.2%54.6%
C71Ruy Lopez, modern Steinitz defence, Duras (Keres) variation19931.7%53.0%
C73Ruy Lopez, modern Steinitz defence, Richter variation24732.4%51.4%
C75Ruy Lopez, modern Steinitz defence, Rubinstein variation14833.8%58.8%
C71Ruy Lopez, modern Steinitz defence, Three knights variation2825.0%58.9%
C76Ruy Lopez, modern Steinitz defence, fianchetto (Bronstein) variation61628.2%51.1%
C74Ruy Lopez, modern Steinitz defence, siesta variation5328.3%50.0%
C62Ruy Lopez, old Steinitz defence64928.2%54.3%
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) defence12438.7%49.2%
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 variation10135.6%43.6%
C80Ruy Lopez, open, 6.d44727.7%60.6%
C80Ruy Lopez, open, 7.Bb350630.2%52.1%
C80Ruy Lopez, open, 8...Be6134532.3%46.0%
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 variation97336.4%58.2%
C80Ruy Lopez, open, Bernstein variation, Karpov gambit1163.6%68.2%
C83Ruy Lopez, open, Breslau variation50.0%80.0%
C82Ruy Lopez, open, Dilworth variation8827.3%52.3%
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 variation4030.0%57.5%
C80Ruy Lopez, open, Schlechter defence2339.1%32.6%
C82Ruy Lopez, open, St. Petersburg variation28338.2%59.4%
C80Ruy Lopez, open, Tartakower variation1136.4%63.6%
C80Ruy Lopez, open, Zukertort variation714.3%50.0%
C83Ruy Lopez, open, classical defence18938.1%57.1%
A06Santasiere's folly13736.5%46.0%
A00Saragossa opening93719.4%50.8%
B01Scandinavian (centre counter) defence511827.5%59.9%
B01Scandinavian defence163730.2%57.5%
B01Scandinavian defence, Gruenfeld variation1435.7%53.6%
B01Scandinavian defence, Lasker variation15127.2%64.6%
B01Scandinavian gambit19531.3%46.4%
B01Scandinavian, Anderssen counter-attack250.0%75.0%
B01Scandinavian, Anderssen counter-attack, Goteborg system50.0%100.0%
B01Scandinavian, Icelandic gambit7631.6%50.0%
B01Scandinavian, Kiel variation520.0%90.0%
B01Scandinavian, Marshall variation95128.2%60.3%
B01Scandinavian, Mieses-Kotrvc gambit267.7%50.0%
B01Scandinavian, Pytel-Wade variation299233.6%59.5%
B01Scandinavian, Richter variation1926.3%71.1%
C44Scotch gambit10526.7%50.5%
C44Scotch gambit, Anderssen (Paulsen, Suhle) counter-attack1100.0%50.0%
C44Scotch gambit, Benima defence6028.3%52.5%
C44Scotch gambit, Dubois-Reti defence63631.1%49.5%
C45Scotch game361231.8%53.3%
C44Scotch opening5724.6%42.1%
C45Scotch, Blackburne attack2254.5%54.5%
C45Scotch, Blumenfeld attack1040.0%20.0%
C45Scotch, Ghulam Kassim variation560.0%70.0%
C44Scotch, Goering gambit18530.8%50.0%
C44Scotch, Goering gambit, Bardeleben variation1020.0%40.0%
C45Scotch, Horwitz attack3438.2%54.4%
C44Scotch, Lolli variation7718.2%53.2%
C45Scotch, Meitner variation4235.7%53.6%
C45Scotch, Mieses variation210233.3%51.1%
C45Scotch, Paulsen attack1631.3%34.4%
C45Scotch, Potter variation29434.4%47.8%
C45Scotch, Pulling counter-attack3122.6%56.5%
C44Scotch, Relfsson gambit ('MacLopez')4012.5%46.3%
C45Scotch, Romanishin variation3426.5%45.6%
C45Scotch, Rosenthal variation10.0%0.0%
C45Scotch, Schmidt variation102739.9%50.3%
C45Scotch, Steinitz variation5521.8%45.5%
C45Scotch, Tartakower variation1637.5%56.3%
A44Semi-Benoni (`blockade variation')117521.2%62.1%
B50Sicilian536828.0%52.6%
B54Sicilian114927.2%54.0%
B56Sicilian531326.3%54.5%
B20Sicilian defence628324.2%48.5%
B27Sicilian defence11230.4%59.8%
B30Sicilian defence442729.0%52.1%
B32Sicilian defence110828.9%52.0%
B33Sicilian defence106129.4%52.8%
B40Sicilian defence900629.0%52.6%
B44Sicilian defence43429.5%53.0%
B22Sicilian, 2.c3, Heidenfeld variation4827.1%44.8%
B27Sicilian, Acton extension1323.1%57.7%
B22Sicilian, Alapin's variation (2.c3)1778031.9%54.0%
B40Sicilian, Anderssen variation235531.5%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 variation4528.9%56.7%
B51Sicilian, Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack286230.2%55.6%
B52Sicilian, Canal-Sokolsky attack, 3...Bd7160134.7%50.1%
B52Sicilian, Canal-Sokolsky attack, Bronstein gambit16627.1%43.1%
B52Sicilian, Canal-Sokolsky attack, Sokolsky variation128133.6%54.2%
B53Sicilian, Chekhover variation105737.4%50.3%
B53Sicilian, Chekhover, Zaitsev variation5523.6%55.5%
B32Sicilian, Flohr variation15028.7%56.3%
B20Sicilian, Gloria variation922.2%55.6%
B21Sicilian, Grand Prix attack225325.8%49.6%
B23Sicilian, Grand Prix attack59626.5%52.7%
B23Sicilian, Grand Prix attack, Schofman variation1827.8%30.6%
B27Sicilian, Hungarian variation1038533.7%57.2%
B41Sicilian, Kan variation28029.3%54.6%
B42Sicilian, Kan, 5.Bd3455529.4%57.0%
B43Sicilian, Kan, 5.Nc3648529.0%54.9%
B42Sicilian, Kan, Gipslis variation19528.7%56.9%
B41Sicilian, Kan, Maroczy bind (Reti variation)90329.1%54.8%
B41Sicilian, Kan, Maroczy bind - Bronstein variation5928.8%56.8%
B42Sicilian, Kan, Polugaievsky variation294626.7%54.4%
B42Sicilian, Kan, Swiss cheese variation30727.7%56.5%
B27Sicilian, Katalimov variation18224.7%55.2%
B20Sicilian, Keres variation (2.Ne2)118725.8%52.7%
B32Sicilian, Labourdonnais-Loewenthal (Kalashnikov) variation181229.7%54.0%
B32Sicilian, Labourdonnais-Loewenthal variation36028.1%54.9%
B57Sicilian, Magnus Smith trap4228.6%54.8%
B40Sicilian, Marshall variation2416.7%41.7%
B90Sicilian, Najdorf1266124.6%51.1%
B98Sicilian, Najdorf variation21324.9%49.5%
B95Sicilian, Najdorf, 6...e6160527.1%53.4%
B94Sicilian, Najdorf, 6.Bg5173725.4%53.1%
B93Sicilian, Najdorf, 6.f4255829.3%49.6%
B98Sicilian, Najdorf, 7...Be727625.0%53.1%
B99Sicilian, Najdorf, 7...Be7 main line161421.9%54.4%
B97Sicilian, Najdorf, 7...Qb6264123.7%46.9%
B96Sicilian, Najdorf, 7.f4206123.2%49.4%
B90Sicilian, Najdorf, Adams attack282024.1%52.7%
B98Sicilian, Najdorf, Browne variation9632.3%57.8%
B90Sicilian, Najdorf, Byrne (English) attack5043724.8%51.5%
B98Sicilian, Najdorf, Goteborg (Argentine) variation1435.7%46.4%
B90Sicilian, Najdorf, Lipnitzky attack235728.8%48.7%
B92Sicilian, Najdorf, Opovcensky variation1152429.9%52.5%
B97Sicilian, Najdorf, Poisoned pawn variation345327.4%44.2%
B96Sicilian, Najdorf, Polugayevsky variation13625.0%52.2%
B96Sicilian, Najdorf, Polugayevsky, Simagin variation4520.0%52.2%
B91Sicilian, Najdorf, Zagreb (fianchetto) variation142727.3%51.3%
B32Sicilian, Nimzovich variation2814.3%53.6%
B31Sicilian, Nimzovich-Rossolimo attack (with ...g6, without ...d6)422530.0%55.7%
B30Sicilian, Nimzovich-Rossolimo attack (without ...d6)698229.2%54.7%
B31Sicilian, Nimzovich-Rossolimo attack, Gurgenidze variation1729.4%50.0%
B29Sicilian, Nimzovich-Rubinstein variation59630.5%56.0%
B29Sicilian, Nimzovich-Rubinstein; Rubinstein counter-gambit7236.1%56.9%
B28Sicilian, O'Kelly variation86528.8%56.8%
B33Sicilian, Pelikan (Lasker/Sveshnikov) variation123824.3%53.4%
B33Sicilian, Pelikan, Bird variation31225.6%59.6%
B33Sicilian, Pelikan, Chelyabinsk variation585026.9%55.4%
B40Sicilian, Pin variation (Sicilian counter-attack)12418.5%54.4%
B40Sicilian, Pin, Jaffe variation50.0%80.0%
B40Sicilian, Pin, Koch variation14825.7%68.2%
B54Sicilian, Prins (Moscow) variation47230.9%52.8%
B55Sicilian, Prins variation, Venice attack12137.2%56.6%
B27Sicilian, Quinteros variation9818.4%59.2%
B60Sicilian, Richter-Rauzer150325.8%57.1%
B62Sicilian, Richter-Rauzer, 6...e618626.3%48.1%
B60Sicilian, Richter-Rauzer, Bondarevsky variation2638.5%53.8%
B62Sicilian, Richter-Rauzer, Keres variation55930.8%53.8%
B60Sicilian, Richter-Rauzer, Larsen variation35724.9%54.8%
B61Sicilian, Richter-Rauzer, Larsen variation, 7.Qd261327.9%60.4%
B62Sicilian, Richter-Rauzer, Margate (Alekhine) variation53932.8%50.0%
B62Sicilian, Richter-Rauzer, Podvebrady variation3933.3%50.0%
B63Sicilian, Richter-Rauzer, Rauzer attack50326.8%57.0%
B63Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7216427.9%52.2%
B65Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9...Nxd4154830.8%56.9%
B64Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9.f463132.8%54.4%
B66Sicilian, Richter-Rauzer, Rauzer attack, 7...a61517424.9%51.2%
B69Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 11.Bxf644923.8%57.3%
B67Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 8...Bd7727325.1%52.5%
B68Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 9...Be724728.3%56.7%
B64Sicilian, Richter-Rauzer, Rauzer attack, Geller variation244.2%72.9%
B62Sicilian, Richter-Rauzer, Richter attack10.0%0.0%
B84Sicilian, Scheveningen (Paulsen), classical variation948729.0%51.9%
B80Sicilian, Scheveningen variation143723.8%53.7%
B83Sicilian, Scheveningen, 6.Be285130.6%51.4%
B82Sicilian, Scheveningen, 6.f480929.9%55.7%
B80Sicilian, Scheveningen, English variation61224.3%50.7%
B81Sicilian, Scheveningen, Keres attack479725.9%58.9%
B82Sicilian, Scheveningen, Tal variation19919.1%59.8%
B80Sicilian, Scheveningen, Vitolins variation11019.1%44.1%
B85Sicilian, Scheveningen, classical25238.5%52.6%
B85Sicilian, Scheveningen, classical main line71040.0%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 variation53328.1%51.6%
B21Sicilian, Smith-Morra gambit108727.9%50.1%
B86Sicilian, Sozin attack25727.2%45.1%
B87Sicilian, Sozin with ...a6 and ...b5138727.8%48.4%
B89Sicilian, Sozin, 7.Be3435726.9%49.1%
B57Sicilian, Sozin, Benko variation521529.4%51.0%
B88Sicilian, Sozin, Fischer variation4250.0%51.2%
B88Sicilian, Sozin, Leonhardt variation71134.0%49.1%
B57Sicilian, Sozin, not Scheveningen57530.6%54.6%
B20Sicilian, Steinitz variation124925.4%54.2%
B27Sicilian, Stiletto (Althouse) variation1414.3%71.4%
B33Sicilian, Sveshnikov variation317726.6%52.9%
B44Sicilian, Szen (`anti-Taimanov') variation100331.6%51.3%
B44Sicilian, Szen variation, Dely-Kasparov gambit2441.7%54.2%
B44Sicilian, Szen, hedgehog variation41830.6%48.3%
B47Sicilian, Taimanov (Bastrikov) variation1119730.8%54.5%
B45Sicilian, Taimanov variation480927.2%54.4%
B46Sicilian, Taimanov variation572028.9%54.7%
B48Sicilian, Taimanov variation726328.0%54.1%
B49Sicilian, Taimanov variation250031.4%55.6%
B45Sicilian, Taimanov, American attack2157.1%42.9%
B89Sicilian, Velimirovic attack172924.5%51.0%
B56Sicilian, Venice attack66234.3%63.2%
B39Sicilian, accelerated fianchetto, Breyer variation151933.1%60.9%
B36Sicilian, accelerated fianchetto, Gurgenidze variation37338.1%53.9%
B36Sicilian, accelerated fianchetto, Maroczy bind144735.5%55.6%
B37Sicilian, accelerated fianchetto, Maroczy bind, 5...Bg733334.8%52.6%
B38Sicilian, accelerated fianchetto, Maroczy bind, 6.Be3295338.7%57.2%
B37Sicilian, accelerated fianchetto, Simagin variation1030.0%45.0%
B34Sicilian, accelerated fianchetto, exchange variation2733.3%42.6%
B34Sicilian, accelerated fianchetto, modern variation128332.3%51.4%
B35Sicilian, accelerated fianchetto, modern variation with Bc4483434.1%53.8%
B23Sicilian, chameleon variation127828.5%55.0%
B58Sicilian, classical75635.1%51.7%
B23Sicilian, closed603026.9%52.9%
B24Sicilian, closed63227.7%49.0%
B25Sicilian, closed26531.3%50.0%
B23Sicilian, closed, 2...Nc6358627.7%53.4%
B26Sicilian, closed, 6.Be357525.6%48.1%
B25Sicilian, closed, 6.Ne2 e5 (Botvinnik)9919.2%53.0%
B25Sicilian, closed, 6.f487429.4%50.3%
B25Sicilian, closed, 6.f4 e5 (Botvinnik)10125.7%48.5%
B23Sicilian, closed, Korchnoi variation37432.6%47.9%
B24Sicilian, closed, Smyslov variation1435.7%75.0%
B70Sicilian, dragon variation80230.2%50.2%
B72Sicilian, dragon, 6.Be328428.5%51.2%
B71Sicilian, dragon, Levenfish variation9336.6%47.3%
B71Sicilian, dragon, Levenfish; Flohr variation812.5%56.3%
B75Sicilian, dragon, Yugoslav attack41329.1%52.3%
B78Sicilian, dragon, Yugoslav attack, 10.O-O-O109224.3%54.4%
B79Sicilian, dragon, Yugoslav attack, 12.h414531.0%64.5%
B76Sicilian, dragon, Yugoslav attack, 7...O-O63829.3%52.0%
B77Sicilian, dragon, Yugoslav attack, 9...Bd746525.6%55.2%
B77Sicilian, dragon, Yugoslav attack, 9.Bc49630.2%53.6%
B77Sicilian, dragon, Yugoslav attack, Byrne variation50.0%80.0%
B76Sicilian, dragon, Yugoslav attack, Rauser variation139226.4%59.3%
B72Sicilian, dragon, classical attack11332.7%55.3%
B73Sicilian, dragon, classical, 8.O-O24137.8%55.8%
B74Sicilian, dragon, classical, 9.Nb326137.2%50.0%
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 variation21236.8%49.5%
B74Sicilian, dragon, classical, Spielmann variation6628.8%53.8%
B73Sicilian, dragon, classical, Zollner gambit1936.8%23.7%
B83Sicilian, modern Scheveningen86630.6%50.3%
B83Sicilian, modern Scheveningen, main line71236.0%52.5%
B83Sicilian, modern Scheveningen, main line with Nb316323.9%50.0%
B20Sicilian, wing gambit8723.0%46.0%
B50Sicilian, wing gambit deferred3619.4%45.8%
B20Sicilian, wing gambit, Carlsbad variation2615.4%57.7%
B20Sicilian, wing gambit, Marshall variation40927.4%41.1%
B20Sicilian, wing gambit, Santasiere variation250.0%75.0%
B00St. George (Baker) defence18721.9%53.7%
C00St. George defence65826.6%55.1%
C44Tayler opening728.6%28.6%
A06Tennison (Lemberg, Zukertort) gambit2317.4%60.9%
C46Three knights game28426.1%53.2%
C46Three knights, Schlechter variation1533.3%63.3%
C46Three knights, Steinitz variation16920.1%53.8%
C46Three knights, Steinitz, Rosenthal variation1560.0%56.7%
D03Torre attack (Tartakower variation)94323.4%50.4%
A45Trompovsky attack (Ruth, Opovcensky opening)759125.0%51.6%
C55Two knights defence16627.7%47.6%
C56Two knights defence7834.6%50.6%
C57Two knights defence6720.9%35.8%
C58Two knights defence23924.7%55.4%
C59Two knights defence18026.1%47.5%
C55Two knights defence (Modern bishop's opening)142330.3%56.2%
C58Two knights defence, Blackburne variation450.0%75.0%
C58Two knights defence, Bogolyubov variation7119.7%54.9%
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 variation18326.2%58.5%
C57Two knights defence, Ulvestad variation3823.7%56.6%
C57Two knights defence, Wilkes Barre (Traxler) variation7715.6%62.3%
C58Two knights defence, Yankovich variation540.0%40.0%
C55Two knights, Max Lange attack8921.3%46.6%
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 variation8535.3%48.2%
C55Two knights, Max Lange attack, Steinitz variation911.1%61.1%
A00Van't Kruijs opening129826.7%52.1%
C25Vienna gambit7327.4%53.4%
C29Vienna gambit26830.2%49.4%
C29Vienna gambit, Bardeleben variation1225.0%29.2%
C29Vienna gambit, Breyer variation14234.5%55.3%
C29Vienna gambit, Kaufmann variation1338.5%65.4%
C29Vienna gambit, Paulsen attack3432.4%57.4%
C29Vienna gambit, Steinitz variation3125.8%48.4%
C25Vienna game75825.5%52.3%
C26Vienna game35727.2%53.9%
C27Vienna game28026.4%49.6%
C28Vienna game38629.8%51.4%
C25Vienna game, Max Lange defence7223.6%46.5%
C27Vienna, Alekhine variation10624.5%42.5%
C26Vienna, Falkbeer variation14117.0%51.1%
C25Vienna, Hamppe-Allgaier gambit520.0%30.0%
C26Vienna, Mengarini variation3735.1%58.1%
C25Vienna, Paulsen variation64323.0%50.9%
C26Vienna, Paulsen-Mieses variation107430.6%51.4%
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) opening20521.5%47.3%
A43Woozle defence4015.0%50.0%
B12de Bruycker defence2330.4%50.0%

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