CCRL 40/4
Downloads and Statistics
November 16, 2017
Testing summary:
Total: 1'577'904 games
played by 1'862 programs
21074 CPU days (X2 4600+)

White wins: 617'441 (39.1%)
Black wins: 503'303 (31.9%)
Draws: 457'160 (29.0%)
White score: 53.6%

Opening statistics

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

ECOOpeningNumber
of
games
DrawsWhite
score
C20Alapin's opening10823.1%48.6%
B02Alekhine's defence54532.5%56.1%
B03Alekhine's defence75923.7%53.4%
B03Alekhine's defence, Balogh variation4119.5%61.0%
B02Alekhine's defence, Brooklyn defence6221.0%58.9%
B02Alekhine's defence, Kmoch variation60.0%50.0%
B02Alekhine's defence, Krejcik variation1631.3%34.4%
B02Alekhine's defence, Maroczy variation26822.8%47.2%
B02Alekhine's defence, Mokele Mbembe (Buecker) variation2722.2%63.0%
B03Alekhine's defence, O'Sullivan gambit166.3%59.4%
B02Alekhine's defence, Saemisch attack22621.2%57.1%
B02Alekhine's defence, Scandinavian variation33426.3%55.1%
B02Alekhine's defence, Spielmann variation1428.6%57.1%
B02Alekhine's defence, Steiner variation825.0%37.5%
B02Alekhine's defence, Two pawns' (Lasker's) attack12939.5%46.9%
B02Alekhine's defence, Welling variation2927.6%44.8%
B03Alekhine's defence, exchange variation73630.8%57.9%
B03Alekhine's defence, exchange, Karpov variation540.0%40.0%
B03Alekhine's defence, four pawns attack9131.9%57.7%
B03Alekhine's defence, four pawns attack, 6...Nc64922.4%50.0%
B03Alekhine's defence, four pawns attack, 7.Be315230.3%61.2%
B03Alekhine's defence, four pawns attack, Ilyin-Genevsky var.20.0%50.0%
B03Alekhine's defence, four pawns attack, Planinc variation20.0%100.0%
B03Alekhine's defence, four pawns attack, Tartakower variation250.0%75.0%
B03Alekhine's defence, four pawns attack, Trifunovic variation4221.4%70.2%
B03Alekhine's defence, four pawns attack, fianchetto variation4936.7%63.3%
B04Alekhine's defence, modern variation38921.3%61.3%
B05Alekhine's defence, modern variation, 4...Bg485328.7%64.3%
B05Alekhine's defence, modern, Alekhine variation560.0%50.0%
B05Alekhine's defence, modern, Flohr variation34729.4%66.0%
B04Alekhine's defence, modern, Keres variation15934.0%61.0%
B04Alekhine's defence, modern, Larsen variation121732.7%56.9%
B05Alekhine's defence, modern, Panov variation1735.3%70.6%
B04Alekhine's defence, modern, Schmid variation13129.8%65.3%
B04Alekhine's defence, modern, fianchetto variation82729.9%55.6%
A00Amar (Paris) opening7622.4%41.4%
A00Amar gambit1216.7%50.0%
A00Amsterdam attack933.3%50.0%
A00Anderssen's opening69921.5%47.5%
A00Anti-Borg (Desprez) opening2321.7%58.7%
B00Barnes defence1816.7%63.9%
A00Battambang opening933.3%27.8%
A40Beefeater defence3823.7%59.2%
A57Benko gambit112724.8%54.6%
A59Benko gambit8433.3%63.1%
A58Benko gambit accepted81430.6%55.3%
A57Benko gambit half accepted119029.3%57.9%
A59Benko gambit, 7.e4837.5%56.3%
A58Benko gambit, Nd2 variation1330.8%53.8%
A59Benko gambit, Ne2 variation1428.6%64.3%
A57Benko gambit, Nescafe Frappe attack120.0%33.3%
A57Benko gambit, Zaitsev system6823.5%50.0%
A58Benko gambit, fianchetto variation39529.4%55.2%
A59Benko gambit, main line89834.1%62.1%
A00Benko's opening1091330.6%50.7%
A00Benko's opening, reversed Alekhine9225.0%46.2%
A56Benoni defence149226.9%58.7%
A60Benoni defence19924.6%53.0%
A61Benoni defence73024.8%58.6%
A56Benoni defence, Hromodka system107121.0%58.6%
A65Benoni, 6.e418223.6%59.1%
A66Benoni, Mikenas variation450.0%50.0%
A61Benoni, Nimzovich (knight's tour) variation68027.8%57.0%
A67Benoni, Taimanov variation35718.8%59.2%
A61Benoni, Uhlmann variation10928.4%50.9%
A78Benoni, classical with ...Re8 and ...Na68535.3%52.9%
A75Benoni, classical with ...a6 and 10...Bg414928.9%53.4%
A70Benoni, classical with e4 and Nf3144527.1%59.8%
A70Benoni, classical without 9.O-O714.3%78.6%
A72Benoni, classical without 9.O-O12227.9%60.7%
A79Benoni, classical, 11.f319820.2%66.7%
A71Benoni, classical, 8.Bg512627.0%54.0%
A76Benoni, classical, 9...Re811315.0%59.7%
A77Benoni, classical, 9...Re8, 10.Nd240624.9%55.8%
A74Benoni, classical, 9...a6, 10.a42832.1%51.8%
A73Benoni, classical, 9.O-O25824.8%53.1%
A61Benoni, fianchetto variation6625.8%53.8%
A62Benoni, fianchetto variation118922.0%55.5%
A64Benoni, fianchetto, 11...Re818426.6%52.4%
A63Benoni, fianchetto, 9...Nbd79426.6%56.9%
A68Benoni, four pawns attack140.0%42.9%
A69Benoni, four pawns attack, main line8134.6%39.5%
A66Benoni, pawn storm variation560.0%70.0%
A02Bird's opening267929.2%50.0%
A03Bird's opening277523.7%48.9%
A03Bird's opening, Lasker variation1637.5%50.0%
A02Bird's opening, Swiss gambit1414.3%64.3%
A03Bird's opening, Williams gambit1816.7%58.3%
A02Bird, From gambit7428.4%46.6%
A02Bird, From gambit, Lasker variation3414.7%54.4%
A02Bird, From gambit, Lipke variation520.0%30.0%
A02Bird, Hobbs gambit425.0%62.5%
C23Bishop's opening38223.6%53.1%
C24Bishop's opening, Berlin defence132027.2%52.4%
C23Bishop's opening, Calabrese counter-gambit, Jaenisch variation1711.8%64.7%
C23Bishop's opening, Classical variation11216.1%50.9%
C23Bishop's opening, Lewis counter-gambit633.3%50.0%
C23Bishop's opening, Lewis gambit540.0%40.0%
C23Bishop's opening, Philidor counter-attack10434.6%59.6%
C23Bishop's opening, Philidor variation1926.3%55.3%
C24Bishop's opening, Ponziani gambit1625.0%43.8%
C24Bishop's opening, Urusov gambit2119.0%38.1%
C24Bishop's opening, Urusov gambit, Panov variation616.7%58.3%
D00Blackmar gambit8229.3%42.7%
A45Blackmar-Diemer gambit15725.5%54.1%
D00Blackmar-Diemer gambit3116.1%50.0%
D00Blackmar-Diemer, Euwe defence110.0%45.5%
E10Blumenfeld counter-gambit11526.1%53.9%
E10Blumenfeld counter-gambit accepted19922.6%54.0%
E10Blumenfeld counter-gambit, Dus-Chotimursky variation36328.7%55.1%
E10Blumenfeld counter-gambit, Spielmann variation8820.5%54.5%
C27Boden-Kieseritsky gambit5813.8%50.0%
C27Boden-Kieseritsky gambit, Lichtenhein defence633.3%33.3%
E11Bogo-Indian defence346332.3%55.5%
E11Bogo-Indian defence, Gruenfeld variation357930.4%55.3%
E11Bogo-Indian defence, Monticelli trap2825.0%55.4%
E11Bogo-Indian defence, Nimzovich variation262828.5%56.4%
A52Budapest defence6720.9%55.2%
A51Budapest defence declined5221.2%52.9%
A52Budapest, Adler variation58929.5%59.1%
A52Budapest, Alekhine variation5922.0%50.0%
A52Budapest, Alekhine, Abonyi variation4630.4%63.0%
A51Budapest, Fajarowicz variation11625.9%61.2%
A51Budapest, Fajarowicz, Steiner variation1100.0%50.0%
A52Budapest, Rubinstein variation68436.1%58.3%
A45Canard opening2718.5%50.0%
B10Caro-Kann defence518125.1%53.8%
B12Caro-Kann defence175321.7%56.3%
B15Caro-Kann defence57224.1%49.3%
B12Caro-Kann, 3.Nd246825.9%59.3%
B15Caro-Kann, Alekhine gambit2948.3%55.2%
B16Caro-Kann, Bronstein-Larsen variation69824.4%61.2%
B12Caro-Kann, Edinburgh variation456.7%76.7%
B15Caro-Kann, Forgacs variation10136.6%55.9%
B10Caro-Kann, Goldman (Spielmann) variation9320.4%51.1%
B15Caro-Kann, Gurgenidze counter-attack3116.1%59.7%
B15Caro-Kann, Gurgenidze system51728.2%57.6%
B10Caro-Kann, Hillbilly attack3735.1%58.1%
B13Caro-Kann, Panov-Botvinnik attack178732.2%53.6%
B14Caro-Kann, Panov-Botvinnik attack, 5...e6513233.1%55.1%
B14Caro-Kann, Panov-Botvinnik attack, 5...g644339.1%54.5%
B13Caro-Kann, Panov-Botvinnik, Czerniak variation4045.0%60.0%
B13Caro-Kann, Panov-Botvinnik, Gunderam attack933.3%38.9%
B13Caro-Kann, Panov-Botvinnik, Herzog defence2123.8%54.8%
B13Caro-Kann, Panov-Botvinnik, Reifir (Spielmann) variation425.0%87.5%
B13Caro-Kann, Panov-Botvinnik, normal variation24535.5%48.8%
B15Caro-Kann, Rasa-Studier gambit1030.0%45.0%
B17Caro-Kann, Steinitz variation525228.9%53.9%
B15Caro-Kann, Tartakower (Nimzovich) variation98731.3%53.1%
B12Caro-Kann, Tartakower (fantasy) variation94326.9%54.7%
B10Caro-Kann, Two knights variation81426.4%56.0%
B11Caro-Kann, Two knights, 3...Bg4143124.9%52.8%
B12Caro-Kann, advance variation2032024.7%53.8%
B12Caro-Kann, advance, Short variation9218.5%69.0%
B10Caro-Kann, anti-Caro-Kann defence128825.9%56.9%
B10Caro-Kann, anti-anti-Caro-Kann defence214734.1%52.0%
B18Caro-Kann, classical variation192930.4%55.3%
B18Caro-Kann, classical, 6.h4203330.5%53.4%
B19Caro-Kann, classical, 7...Nd790324.7%52.1%
B18Caro-Kann, classical, Flohr variation8439.3%58.9%
B18Caro-Kann, classical, Maroczy attack742.9%64.3%
B19Caro-Kann, classical, Spassky variation816427.6%57.5%
B10Caro-Kann, closed (Breyer) variation165524.5%50.4%
B13Caro-Kann, exchange variation104727.2%50.5%
B13Caro-Kann, exchange, Rubinstein variation20934.0%55.7%
B12Caro-Masi defence1414.3%50.0%
B00Carr's defence6524.6%53.8%
E00Catalan opening619530.4%54.2%
E01Catalan, closed48729.8%52.9%
E06Catalan, closed, 5.Nf3601034.5%54.2%
E07Catalan, closed, 6...Nbd717229.7%52.6%
E08Catalan, closed, 7.Qc223132.0%53.7%
E07Catalan, closed, Botvinnik variation14625.3%59.2%
E08Catalan, closed, Qc2 & b339728.2%51.4%
E09Catalan, closed, Sokolsky variation30.0%66.7%
E08Catalan, closed, Spassky gambit2524.0%56.0%
E08Catalan, closed, Zagoryansky variation450.0%75.0%
E09Catalan, closed, main line60328.7%57.3%
E04Catalan, open, 5.Nf31029832.5%53.2%
E02Catalan, open, 5.Qa48937.1%59.0%
E03Catalan, open, 5.Qa4 Nbd7, 6.Qxc42330.4%58.7%
E03Catalan, open, Alekhine variation156.7%43.3%
E05Catalan, open, classical line48731.2%55.9%
C21Centre game27533.1%58.7%
C22Centre game1931.6%63.2%
C22Centre game, Berger variation36925.5%53.7%
C22Centre game, Charousek variation714.3%50.0%
C22Centre game, Hall variation425.0%87.5%
C22Centre game, Paulsen attack9230.4%50.0%
A00Clemenz (Mead's, Basman's or de Klerk's) opening442123.4%49.4%
D05Colle system79030.4%52.4%
B00Corn stalk defence1136.4%81.8%
A56Czech Benoni defence75425.2%61.5%
A56Czech Benoni, King's Indian system30318.8%59.2%
C40Damiano's defence2927.6%55.2%
C21Danish gambit5827.6%55.2%
C21Danish gambit, Collijn defence30.0%33.3%
C21Danish gambit, Soerensen defence2821.4%53.6%
A46Doery defence250.0%25.0%
E10Doery defence10823.1%45.8%
C44Dresden opening5820.7%46.6%
A00Dunst (Sleipner, Heinrichsen) opening185023.2%52.0%
A00Durkin's attack6717.9%53.7%
A80Dutch743826.3%54.0%
A81Dutch defence708928.5%56.1%
A84Dutch defence159225.9%57.2%
A90Dutch defence202025.9%55.8%
A91Dutch defence19632.1%52.8%
A92Dutch defence11232.1%60.7%
A92Dutch defence, Alekhine variation11631.0%59.5%
A81Dutch defence, Blackburne variation7131.0%62.0%
A90Dutch defence, Dutch-Indian (Nimzo-Dutch) variation48028.3%60.4%
A84Dutch defence, Rubinstein variation64328.1%56.8%
A85Dutch with c4 & Nc350932.6%55.6%
A86Dutch with c4 & g319126.2%62.8%
A80Dutch, 2.Bg5 variation226223.0%53.1%
A82Dutch, Balogh defence50.0%60.0%
A86Dutch, Hort-Antoshin system20.0%50.0%
A97Dutch, Ilyin-Genevsky variation4431.8%61.4%
A98Dutch, Ilyin-Genevsky variation with Qc217026.5%60.9%
A99Dutch, Ilyin-Genevsky variation with b349724.9%59.2%
A97Dutch, Ilyin-Genevsky, Winter variation17936.3%64.5%
A80Dutch, Korchnoi attack9831.6%52.6%
A80Dutch, Krejcik gambit14734.7%46.6%
A86Dutch, Leningrad variation17731.6%60.5%
A81Dutch, Leningrad, Karlsbad variation742.9%64.3%
A87Dutch, Leningrad, main variation77228.6%59.5%
A89Dutch, Leningrad, main variation with Nc6132328.4%57.9%
A88Dutch, Leningrad, main variation with c6211331.1%56.9%
A80Dutch, Manhattan (Alapin, Ulvestad) variation11821.2%54.7%
A80Dutch, Spielmann gambit333.3%16.7%
A82Dutch, Staunton gambit14530.3%39.3%
A84Dutch, Staunton gambit deferred1625.0%37.5%
A83Dutch, Staunton gambit, Alekhine variation1931.6%63.2%
A83Dutch, Staunton gambit, Chigorin variation5131.4%68.6%
A83Dutch, Staunton gambit, Lasker variation1127.3%50.0%
A83Dutch, Staunton gambit, Nimzovich variation714.3%50.0%
A83Dutch, Staunton gambit, Staunton's line22226.6%46.6%
A82Dutch, Staunton gambit, Tartakower variation1618.8%53.1%
A80Dutch, Von Pretzel gambit1100.0%50.0%
A96Dutch, classical variation52330.2%62.1%
A92Dutch, stonewall variation32727.2%58.9%
A94Dutch, stonewall with Ba317836.0%53.4%
A92Dutch, stonewall with Nc35619.6%61.6%
A95Dutch, stonewall with Nc344726.2%54.0%
A93Dutch, stonewall, Botwinnik variation24427.9%59.8%
A95Dutch, stonewall: Chekhover variation5036.0%56.0%
A90Dutch-Indian, Alekhine variation11030.9%48.2%
E10Dzindzikhashvili defence19027.9%59.7%
A10English opening452925.0%53.2%
A13English opening462325.3%53.0%
A15English opening1236632.8%54.0%
A16English opening116026.8%53.9%
A17English opening36330.9%52.6%
A20English opening1076428.4%52.2%
A21English opening323627.1%54.0%
A22English opening103325.4%50.4%
A13English opening, Agincourt variation276027.4%52.1%
A15English, 1...Nf6 (Anglo-Indian defense)159326.3%52.5%
A10English, Adorjan defence52536.0%51.3%
A10English, Anglo-Dutch defense126424.6%55.3%
A16English, Anglo-Gruenfeld defense30530.2%51.8%
A16English, Anglo-Gruenfeld defense, Korchnoi variation1136.4%63.6%
A16English, Anglo-Gruenfeld, Czech defense12531.2%66.8%
A16English, Anglo-Gruenfeld, Smyslov defense7437.8%59.5%
A22English, Bellon gambit1612.5%43.8%
A12English, Bled variation4332.6%58.1%
A26English, Botvinnik system40524.4%47.5%
A28English, Bradley Beach variation18230.2%43.1%
A24English, Bremen system with ...g66825.0%59.6%
A23English, Bremen system, Keres variation43032.6%48.4%
A22English, Bremen, Smyslov system258428.1%49.0%
A22English, Bremen, reverse dragon159134.1%53.1%
A12English, Capablanca's variation7327.4%47.9%
A22English, Carls' Bremen system78724.5%54.7%
A11English, Caro-Kann defensive system137127.1%55.7%
A12English, Caro-Kann defensive system27127.7%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 counterattack351228.2%52.6%
A13English, Kurajica defence11825.4%50.8%
A12English, London defensive system35232.1%49.3%
A18English, Mikenas-Carls variation9126.4%56.0%
A18English, Mikenas-Carls, Flohr variation15128.5%60.6%
A18English, Mikenas-Carls, Kevitz variation4617.4%54.3%
A19English, Mikenas-Carls, Sicilian variation23928.9%55.0%
A28English, Nenarokov variation7035.7%46.4%
A13English, Neo-Catalan157229.5%53.3%
A13English, Neo-Catalan accepted221433.5%54.4%
A14English, Neo-Catalan declined106035.8%52.6%
A12English, New York (London) defensive system4533.3%45.6%
A17English, Nimzo-English opening246030.7%54.7%
A20English, Nimzovich variation28326.1%55.1%
A20English, Nimzovich, Flohr variation64528.5%46.2%
A17English, Queens Indian formation21425.7%54.4%
A17English, Queens Indian, Romanishin variation4637.0%46.7%
A13English, Romanishin gambit68431.1%54.2%
A25English, Sicilian reversed104726.1%51.5%
A21English, Smyslov defence5326.4%56.6%
A14English, Symmetrical, Keres defence88536.3%54.9%
A12English, Torre defensive system35634.3%52.0%
A21English, Troeger defence16728.1%54.8%
A13English, Wimpey system29029.7%45.9%
A25English, closed system133628.1%53.1%
A26English, closed system33823.1%50.9%
A25English, closed system (without ...d6)9824.5%48.0%
A25English, closed, 5.Rb165028.8%51.8%
A25English, closed, 5.Rb1 Taimanov variation425.0%37.5%
A25English, closed, Hort variation4131.7%50.0%
A25English, closed, Taimanov variation2737.0%44.4%
A28English, four knights system62025.2%52.4%
A28English, four knights, 4.e3133927.8%51.5%
A28English, four knights, Capablanca variation48428.9%53.3%
A28English, four knights, Marini variation136931.2%53.8%
A28English, four knights, Nimzovich variation113329.0%51.8%
A28English, four knights, Romanishin variation115634.0%50.6%
A28English, four knights, Stean variation17524.6%56.3%
A29English, four knights, kingside fianchetto1590630.6%51.5%
A30English, symmetrical variation826328.9%53.6%
A32English, symmetrical variation76429.1%53.0%
A33English, symmetrical variation371835.1%52.5%
A34English, symmetrical variation181126.2%50.7%
A35English, symmetrical variation34727.1%57.6%
A36English, symmetrical variation16225.9%48.8%
A37English, symmetrical variation90728.4%53.0%
A38English, symmetrical variation71228.9%52.5%
A31English, symmetrical, Benoni formation217828.1%54.5%
A36English, symmetrical, Botvinnik system60328.4%56.1%
A36English, symmetrical, Botvinnik system reversed14126.2%50.0%
A37English, symmetrical, Botvinnik system reversed67626.8%51.0%
A33English, symmetrical, Geller variation266630.0%52.6%
A34English, symmetrical, Rubinstein system35232.7%53.8%
A35English, symmetrical, four knights system379130.1%53.0%
A30English, symmetrical, hedgehog system735131.8%55.8%
A30English, symmetrical, hedgehog, flexible formation58036.2%56.9%
A38English, symmetrical, main line with b31136.4%36.4%
A38English, symmetrical, main line with d315435.7%51.0%
A39English, symmetrical, main line with d4110737.9%55.3%
A34English, symmetrical, three knights system229734.8%52.3%
A27English, three knights system45826.9%53.2%
A36English, ultra-symmetrical variation190328.7%49.1%
C51Evans gambit60.0%0.0%
C52Evans gambit23227.2%39.9%
C51Evans gambit declined2138.1%42.9%
C51Evans gambit declined, 5.a410529.5%47.1%
C51Evans gambit declined, Cordel variation1330.8%30.8%
C51Evans gambit declined, Showalter variation1020.0%50.0%
C51Evans gambit, 5...Be7771.4%35.7%
C52Evans gambit, Alapin-Steinitz variation450.0%75.0%
C51Evans gambit, Cordel variation10026.0%46.0%
C51Evans gambit, Goering attack1127.3%59.1%
C52Evans gambit, Lasker defence1040.0%50.0%
C52Evans gambit, Levenfish variation250.0%25.0%
C51Evans gambit, Morphy attack1233.3%58.3%
C51Evans gambit, Paulsen variation3611.1%44.4%
C52Evans gambit, Richardson attack616.7%25.0%
C51Evans gambit, Steinitz variation10.0%100.0%
C51Evans gambit, Stone-Ware variation5722.8%44.7%
C52Evans gambit, Tartakower attack9621.9%51.6%
C52Evans gambit, Waller attack616.7%41.7%
C52Evans gambit, compromised defence2611.5%51.9%
C52Evans gambit, compromised defence, Paulsen variation1625.0%68.8%
C51Evans gambit, normal variation1233.3%41.7%
C49Four knights13135.1%50.4%
C46Four knights game88428.5%50.0%
C48Four knights, Bardeleben variation728.6%57.1%
C47Four knights, Belgrade gambit23626.7%42.6%
C49Four knights, Gunsberg counter-attack1100.0%50.0%
C46Four knights, Gunsberg variation11729.1%42.7%
C46Four knights, Italian variation37829.4%48.0%
C49Four knights, Janowski variation2138.1%38.1%
C48Four knights, Marshall variation1118.2%63.6%
C49Four knights, Nimzovich (Paulsen) variation7145.1%54.9%
C48Four knights, Ranken variation2825.0%44.6%
C48Four knights, Rubinstein counter-gambit146326.0%53.9%
C48Four knights, Rubinstein counter-gambit, 5.Be21323.1%57.7%
C48Four knights, Rubinstein counter-gambit, Bogolyubov variation1533.3%56.7%
C48Four knights, Rubinstein counter-gambit, Henneberger variation4634.8%63.0%
C48Four knights, Rubinstein counter-gambit, exchange variation12840.6%48.4%
C46Four knights, Schultze-Mueller gambit2429.2%39.6%
C47Four knights, Scotch variation4436.4%61.4%
C47Four knights, Scotch, 4...exd477436.0%50.8%
C47Four knights, Scotch, Krause variation17733.3%55.1%
C48Four knights, Spanish variation32127.1%51.2%
C48Four knights, Spanish, classical defence15227.6%52.0%
C48Four knights, Spielmann variation633.3%50.0%
C49Four knights, Svenonius variation30.0%66.7%
C49Four knights, double Ruy Lopez31142.1%56.4%
C49Four knights, symmetrical variation48031.7%49.8%
C49Four knights, symmetrical, Blake variation475.0%62.5%
C49Four knights, symmetrical, Capablanca variation3342.4%57.6%
C49Four knights, symmetrical, Maroczy system8739.1%51.7%
C49Four knights, symmetrical, Metger unpin49035.1%52.4%
C49Four knights, symmetrical, Pillsbury variation4725.5%42.6%
C49Four knights, symmetrical, Tarrasch variation540.0%60.0%
B00Fred80.0%87.5%
C00French defence361222.9%55.2%
C11French defence58225.1%48.8%
C00French defence, Steiner variation109027.6%49.7%
C00French, Alapin variation4515.6%45.6%
C13French, Albin-Alekhine-Chatard attack35722.7%57.3%
C13French, Albin-Alekhine-Chatard attack, Breyer variation9027.8%55.0%
C13French, Albin-Alekhine-Chatard attack, Maroczy variation540.0%20.0%
C13French, Albin-Alekhine-Chatard attack, Spielmann variation5326.4%56.6%
C13French, Albin-Alekhine-Chatard attack, Teichmann variation922.2%88.9%
C11French, Burn variation898530.6%52.0%
C00French, Chigorin variation305924.5%50.9%
C10French, Fort Knox variation45633.6%54.1%
C10French, Frere (Becker) variation4126.8%52.4%
C11French, Henneberger variation3138.7%32.3%
C00French, King's Indian attack726628.5%50.9%
C00French, Labourdonnais variation63125.8%49.0%
C12French, MacCutcheon variation28629.4%51.7%
C12French, MacCutcheon, Bernstein variation185.6%52.8%
C12French, MacCutcheon, Bogolyubov variation616.7%75.0%
C12French, MacCutcheon, Chigorin variation4131.7%54.9%
C12French, MacCutcheon, Dr. Olland (Dutch) variation3228.1%57.8%
C12French, MacCutcheon, Duras variation366.7%66.7%
C12French, MacCutcheon, Grigoriev variation862.5%56.3%
C12French, MacCutcheon, Janowski variation17524.6%59.1%
C12French, MacCutcheon, Lasker variation44719.5%52.0%
C12French, MacCutcheon, Lasker variation, 8...g674424.7%54.6%
C12French, MacCutcheon, Tartakower variation450.0%50.0%
C12French, MacCutcheon, advance variation1241.7%54.2%
C10French, Marshall variation1435.7%67.9%
C10French, Paulsen variation149627.2%56.5%
C00French, Pelikan variation8427.4%50.6%
C00French, Reti (Spielmann) variation28026.4%54.6%
C00French, Reversed Philidor formation8229.3%40.2%
C10French, Rubinstein variation700032.4%53.3%
C10French, Rubinstein, Capablanca line1931.6%52.6%
C00French, Schlechter variation46431.5%50.9%
C00French, Steinitz attack5036.0%52.0%
C11French, Steinitz variation175127.0%53.7%
C11French, Steinitz, Boleslavsky variation631626.3%54.8%
C11French, Steinitz, Bradford attack30.0%33.3%
C11French, Steinitz, Gledhill attack4942.9%54.1%
C11French, Swiss variation13127.5%43.5%
C03French, Tarrasch278329.7%56.2%
C05French, Tarrasch, Botvinnik variation14924.2%57.0%
C07French, Tarrasch, Eliskases variation6633.3%47.0%
C04French, Tarrasch, Guimard main line42326.7%56.1%
C03French, Tarrasch, Guimard variation22622.6%60.8%
C03French, Tarrasch, Haberditz variation1513.3%66.7%
C06French, Tarrasch, Leningrad variation5117.6%53.9%
C05French, Tarrasch, closed variation189324.1%56.7%
C06French, Tarrasch, closed variation, main line266332.3%55.3%
C07French, Tarrasch, open variation612732.5%52.9%
C09French, Tarrasch, open variation, main line216136.8%55.9%
C08French, Tarrasch, open, 4.ed ed293936.9%53.1%
C00French, Two knights variation79823.7%50.6%
C15French, Winawer (Nimzovich) variation125930.7%53.5%
C15French, Winawer, Alekhine (Maroczy) gambit36430.8%56.0%
C15French, Winawer, Alekhine gambit70.0%71.4%
C15French, Winawer, Alekhine gambit, Alatortsev variation1100.0%50.0%
C15French, Winawer, Alekhine gambit, Kan variation20034.0%49.0%
C15French, Winawer, Kondratiyev variation1241.7%62.5%
C16French, Winawer, Petrosian variation34022.9%53.8%
C16French, Winawer, advance variation105423.0%56.5%
C17French, Winawer, advance variation9024.4%60.0%
C18French, Winawer, advance variation73220.4%57.2%
C17French, Winawer, advance, 5.a374624.7%57.2%
C19French, Winawer, advance, 6...Ne774526.0%60.0%
C17French, Winawer, advance, Bogolyubov variation29428.9%56.6%
C17French, Winawer, advance, Rauzer variation540.0%40.0%
C17French, Winawer, advance, Russian variation6524.6%49.2%
C19French, Winawer, advance, Smyslov variation26225.2%58.8%
C19French, Winawer, advance, poisoned pawn variation505124.4%58.8%
C19French, Winawer, advance, poisoned pawn, Euwe-Gligoric variation1450.0%53.6%
C19French, Winawer, advance, poisoned pawn, Konstantinopolsky variation120325.9%60.1%
C19French, Winawer, advance, positional main line279723.2%57.5%
C18French, Winawer, classical variation76921.1%56.7%
C15French, Winawer, fingerslip variation3721.6%59.5%
C00French, Wing gambit4610.9%40.2%
C02French, advance variation201524.9%53.7%
C02French, advance, Euwe variation274125.6%52.0%
C02French, advance, Milner-Barry gambit12525.6%53.6%
C02French, advance, Nimzovich system31618.7%46.7%
C02French, advance, Nimzovich variation4325.6%22.1%
C02French, advance, Paulsen attack205624.5%53.6%
C02French, advance, Steinitz variation66428.5%49.8%
C02French, advance, Wade variation38427.3%54.8%
C13French, classical2412.5%52.1%
C14French, classical variation2114.3%21.4%
C14French, classical, Alapin variation7634.2%60.5%
C13French, classical, Anderssen variation4621.7%39.1%
C13French, classical, Anderssen-Richter variation1315.4%30.8%
C13French, classical, Frankfurt variation1618.8%84.4%
C14French, classical, Pollock variation120.0%41.7%
C14French, classical, Rubinstein variation4719.1%54.3%
C14French, classical, Stahlberg variation450.0%75.0%
C14French, classical, Steinitz variation89326.1%57.5%
C14French, classical, Tarrasch variation650.0%75.0%
C13French, classical, Tartakower variation2626.9%55.8%
C13French, classical, Vistaneckis (Nimzovich) variation40.0%75.0%
C01French, exchange variation202830.7%53.4%
C01French, exchange, Bogolyubov variation922.2%33.3%
C01French, exchange, Svenonius variation6137.7%58.2%
A00Gedult's opening3116.1%40.3%
C50Giuoco Pianissimo186229.6%52.1%
C50Giuoco Pianissimo, Canal variation23230.2%51.3%
C50Giuoco Pianissimo, Italian four knights variation49828.1%55.4%
C50Giuoco Piano102628.3%49.8%
C53Giuoco Piano399327.9%52.9%
C54Giuoco Piano14125.5%53.9%
C53Giuoco Piano, Anderssen variation2152.4%54.8%
C53Giuoco Piano, Bird's attack12925.6%51.6%
C54Giuoco Piano, Greco variation1100.0%50.0%
C54Giuoco Piano, Greco's attack425.0%37.5%
C53Giuoco Piano, LaBourdonnais variation1338.5%57.7%
C53Giuoco Piano, Mestel variation250.0%75.0%
C54Giuoco Piano, Moeller (Therkatz) attack2544.0%38.0%
C53Giuoco Piano, Tarrasch variation425.0%62.5%
C53Giuoco Piano, centre-holding variation2722.2%63.0%
C53Giuoco Piano, close variation3823.7%51.3%
C50Giuoco Piano, four knights variation13126.0%51.1%
C55Giuoco piano1100.0%50.0%
A00Global opening1618.8%71.9%
C40Greco defence9017.8%64.4%
A00Grob's attack23222.0%49.4%
A00Grob, Fritz gambit3910.3%20.5%
D80Gruenfeld defence79641.5%53.5%
D99Gruenfeld defence, Smyslov, Yugoslav variation5149.0%59.8%
D99Gruenfeld defence, Smyslov, main line38230.6%61.6%
D93Gruenfeld with Bf4 e366138.1%52.8%
D94Gruenfeld with e3 Bd33040.0%60.0%
D95Gruenfeld with e3 & Qb36939.1%50.0%
D82Gruenfeld, 4.Bf453731.3%53.8%
D92Gruenfeld, 5.Bf4108332.7%55.1%
D91Gruenfeld, 5.Bg5203331.7%49.6%
D94Gruenfeld, 5.e372834.5%58.0%
D95Gruenfeld, Botvinnik variation11130.6%44.1%
D94Gruenfeld, Flohr defence6624.2%54.5%
D90Gruenfeld, Flohr variation27934.4%50.5%
D83Gruenfeld, Gruenfeld gambit4626.1%52.2%
D84Gruenfeld, Gruenfeld gambit accepted8124.7%67.9%
D83Gruenfeld, Gruenfeld gambit, Botvinnik variation1963.2%42.1%
D83Gruenfeld, Gruenfeld gambit, Capablanca variation8334.9%57.2%
D94Gruenfeld, Makogonov variation22031.8%50.9%
D94Gruenfeld, Opovcensky variation20238.1%50.2%
D81Gruenfeld, Russian variation36333.9%55.5%
D96Gruenfeld, Russian variation50530.5%53.7%
D97Gruenfeld, Russian variation with e45731.6%52.6%
D97Gruenfeld, Russian, Alekhine (Hungarian) variation389931.5%51.3%
D97Gruenfeld, Russian, Byrne (Simagin) variation32626.4%50.6%
D98Gruenfeld, Russian, Keres variation1225.0%70.8%
D97Gruenfeld, Russian, Levenfish variation728.6%42.9%
D97Gruenfeld, Russian, Prins variation112334.2%54.9%
D98Gruenfeld, Russian, Smyslov variation58527.4%53.8%
D97Gruenfeld, Russian, Szabo (Boleslavsky) variation32428.4%59.9%
D90Gruenfeld, Schlechter variation1428.6%64.3%
D94Gruenfeld, Smyslov defence25236.1%53.0%
D88Gruenfeld, Spassky variation, main line, 10...cd, 11.cd32740.4%52.3%
D89Gruenfeld, Spassky variation, main line, 13.Bd310333.0%52.4%
D80Gruenfeld, Stockholm variation56333.7%49.7%
D90Gruenfeld, Three knights variation68034.4%53.7%
D85Gruenfeld, exchange variation269735.7%52.6%
D86Gruenfeld, exchange, Larsen variation1926.3%60.5%
D87Gruenfeld, exchange, Seville variation17738.4%65.5%
D86Gruenfeld, exchange, Simagin's improved variation11230.4%58.0%
D86Gruenfeld, exchange, Simagin's lesser variation5527.3%62.7%
D89Gruenfeld, exchange, Sokolsky variation6434.4%39.1%
D87Gruenfeld, exchange, Spassky variation64333.7%57.5%
D86Gruenfeld, exchange, classical variation127531.4%54.5%
D85Gruenfeld, modern exchange variation724936.9%53.4%
B00Guatemala defence10.0%100.0%
C40Gunderam defence23521.7%63.6%
C21Halasz gambit4528.9%41.1%
A43Hawk (Habichd) defence425.0%37.5%
C50Hungarian defence11935.3%54.6%
C44Inverted Hanham4524.4%50.0%
C44Inverted Hungarian4928.6%49.0%
C36KGA, Abbazia defence (classical defence, modern defence[!])2520.0%54.0%
C36KGA, Abbazia defence, Botvinnik variation20.0%100.0%
C36KGA, Abbazia defence, modern variation17130.4%43.9%
C39KGA, Allgaier gambit10.0%100.0%
C34KGA, Becker defence4520.0%41.1%
C37KGA, Blachly gambit1717.6%38.2%
C34KGA, Bonsch-Osmolovsky variation4425.0%42.0%
C33KGA, Breyer gambit2040.0%30.0%
C33KGA, Carrera (Basman) gambit3531.4%41.4%
C35KGA, Cunningham defence9219.6%48.9%
C35KGA, Cunningham, Bertin gambit20.0%50.0%
C35KGA, Cunningham, Euwe defence6127.9%50.0%
C34KGA, Fischer defence20020.5%48.8%
C34KGA, Gianutio counter-gambit10.0%0.0%
C38KGA, Hanstein gambit2119.0%38.1%
C33KGA, Keres (Mason-Steinitz) gambit439.3%44.2%
C39KGA, Kieseritsky, Berlin defence5313.2%36.8%
C39KGA, Kieseritsky, Berlin defence, 6.Bc44928.6%49.0%
C39KGA, Kieseritsky, Brentano (Campbell) defence10.0%100.0%
C39KGA, Kieseritsky, Kolisch defence10433.7%50.5%
C39KGA, Kieseritsky, Neumann defence425.0%62.5%
C39KGA, Kieseritsky, Paulsen defence540.0%40.0%
C39KGA, Kieseritsky, Rice gambit1952.6%26.3%
C39KGA, Kieseritsky, Salvio (Rosenthal) defence1346.2%61.5%
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 gambit128.3%12.5%
C37KGA, Rosentreter gambit333.3%83.3%
C37KGA, Salvio gambit922.2%44.4%
C37KGA, Salvio gambit, Anderssen counter-attack20.0%50.0%
C34KGA, Schallop defence9318.3%52.2%
C37KGA, Silberschmidt gambit20.0%0.0%
C33KGA, Villemson (Steinitz) gambit728.6%42.9%
C33KGA, bishop's gambit11112.6%52.3%
C33KGA, bishop's gambit, Anderssen variation616.7%75.0%
C33KGA, bishop's gambit, Bledow variation3627.8%41.7%
C33KGA, bishop's gambit, Boden defence714.3%35.7%
C33KGA, bishop's gambit, Bogolyubov variation319.7%46.8%
C33KGA, bishop's gambit, Boren-Svenonius variation30.0%66.7%
C33KGA, bishop's gambit, Cozio (Morphy) defence2240.9%38.6%
C33KGA, bishop's gambit, Jaenisch variation9724.7%51.5%
C33KGA, bishop's gambit, Lopez-Gianutio counter-gambit3125.8%29.0%
C33KGA, bishop's gambit, Maurian defence1915.8%55.3%
C33KGA, bishop's gambit, McDonnell attack250.0%75.0%
C33KGA, bishop's gambit, Morphy variation3525.7%44.3%
C33KGA, bishop's gambit, Paulsen attack812.5%43.8%
C33KGA, bishop's gambit, Ruy Lopez defence540.0%40.0%
C33KGA, bishop's gambit, Steinitz defence7429.7%44.6%
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-gambit6221.0%47.6%
C31KGD, Falkbeer, 3...e4540.0%60.0%
C31KGD, Falkbeer, 4.d31533.3%63.3%
C32KGD, Falkbeer, 5.de3129.0%53.2%
C32KGD, Falkbeer, Charousek gambit10.0%100.0%
C32KGD, Falkbeer, Keres variation1100.0%50.0%
C31KGD, Falkbeer, Morphy gambit540.0%60.0%
C31KGD, Falkbeer, Nimzovich variation70.0%42.9%
C32KGD, Falkbeer, Reti variation366.7%33.3%
C31KGD, Falkbeer, Rubinstein variation450.0%50.0%
C32KGD, Falkbeer, Tarrasch variation10.0%100.0%
C31KGD, Falkbeer, Tartakower variation128.3%87.5%
C32KGD, Falkbeer, main line, 7...Bf5977.8%38.9%
C30KGD, Keene's defence3718.9%50.0%
C30KGD, Mafia defence10825.9%59.3%
C31KGD, Nimzovich counter-gambit4818.8%44.8%
C30KGD, Norwalde variation1428.6%50.0%
C30KGD, classical counter-gambit616.7%58.3%
C30KGD, classical variation22320.2%46.9%
C30KGD, classical, 4.c312625.4%61.9%
C30KGD, classical, Heath variation366.7%33.3%
C30KGD, classical, Marshall attack1020.0%50.0%
C30KGD, classical, Reti variation616.7%75.0%
C30KGD, classical, Soldatenkov variation1020.0%60.0%
C30KGD, classical, Svenonius variation520.0%50.0%
B00KP, Colorado counter1631.3%59.4%
C20KP, Indian opening23426.9%50.2%
C20KP, King's head opening1631.3%59.4%
C20KP, Lopez opening6235.5%45.2%
C20KP, Mengarini's opening7817.9%56.4%
C20KP, Napoleon's opening1540.0%53.3%
B00KP, Nimzovich defence240423.4%57.8%
B00KP, Nimzovich defence, Bogolyubov variation25817.1%54.7%
B00KP, Nimzovich defence, Marshall gambit616.7%41.7%
C20KP, Patzer opening2330.4%58.7%
A50Kevitz-Trajkovich defence106927.6%53.3%
E60King's Indian defence148823.7%53.4%
E61King's Indian defence, 3.Nc3126127.8%53.8%
E72King's Indian with e4 & g34228.6%54.8%
E60King's Indian, 3.Nf3452829.0%55.6%
E60King's Indian, 3.g3206431.3%56.0%
E60King's Indian, 3.g3, counterthrust variation1421.4%46.4%
E70King's Indian, 4.e479925.7%54.3%
E73King's Indian, 5.Be210222.5%48.5%
E90King's Indian, 5.Nf3115123.4%54.3%
E91King's Indian, 6.Be285824.9%59.7%
E92King's Indian, Andersson variation37337.8%53.2%
E60King's Indian, Anti-Gruenfeld13721.9%45.3%
E73King's Indian, Averbakh system81027.7%52.0%
E74King's Indian, Averbakh, 6...c523322.3%63.9%
E75King's Indian, Averbakh, main line3633.3%44.4%
E60King's Indian, Danube gambit1631.3%53.1%
A48King's Indian, East Indian defence159328.5%53.5%
E76King's Indian, Four pawns attack28030.4%58.4%
E77King's Indian, Four pawns attack23031.7%52.4%
E77King's Indian, Four pawns attack, 6.Be250.0%40.0%
E77King's Indian, Four pawns attack, Florentine gambit3930.8%41.0%
E76King's Indian, Four pawns attack, dynamic line13732.1%51.8%
E79King's Indian, Four pawns attack, main line12644.4%57.1%
E78King's Indian, Four pawns attack, with Be2 and Nf31942.1%57.9%
E92King's Indian, Gligoric-Taimanov system238224.6%57.2%
E91King's Indian, Kazakh variation69729.4%57.5%
E70King's Indian, Kramer system22722.0%53.3%
E90King's Indian, Larsen variation11030.0%54.1%
A48King's Indian, London system104928.4%51.7%
E71King's Indian, Makagonov system (5.h3)78425.3%55.1%
E92King's Indian, Petrosian system18117.7%56.4%
E93King's Indian, Petrosian system, Keres variation2828.6%50.0%
E92King's Indian, Petrosian system, Stein variation119627.2%53.0%
E93King's Indian, Petrosian system, main line22123.1%54.5%
E72King's Indian, Pomar system1353.8%57.7%
E80King's Indian, Saemisch variation47125.5%55.4%
E81King's Indian, Saemisch, 5...O-O220324.9%53.9%
E83King's Indian, Saemisch, 6...Nc68016.3%54.4%
E81King's Indian, Saemisch, Byrne variation8731.0%51.1%
E83King's Indian, Saemisch, Panno formation18520.5%54.6%
E84King's Indian, Saemisch, Panno main line83621.9%52.1%
E83King's Indian, Saemisch, Ruban variation812.5%56.3%
E82King's Indian, Saemisch, double fianchetto variation15328.8%60.8%
E89King's Indian, Saemisch, orthodox main line8026.3%61.9%
E85King's Indian, Saemisch, orthodox variation4337.2%62.8%
E86King's Indian, Saemisch, orthodox, 7.Nge2 c654022.2%55.0%
E87King's Indian, Saemisch, orthodox, 7.d545020.7%62.1%
E88King's Indian, Saemisch, orthodox, 7.d5 c650731.0%55.1%
E87King's Indian, Saemisch, orthodox, Bronstein variation1127.3%59.1%
E73King's Indian, Semi-Averbakh system3116.1%56.5%
E61King's Indian, Smyslov system13023.8%51.2%
A48King's Indian, Torre attack180329.5%50.0%
E90King's Indian, Zinnowitz variation9430.9%52.7%
E70King's Indian, accelerated Averbakh system12526.4%50.0%
E92King's Indian, classical variation1717.6%44.1%
E62King's Indian, fianchetto variation13327.1%54.9%
E62King's Indian, fianchetto with ...Nc633424.6%57.2%
E67King's Indian, fianchetto with ...Nd717226.7%62.8%
A49King's Indian, fianchetto without c4202227.9%54.2%
E62King's Indian, fianchetto, Kavalek (Bronstein) variation114729.7%58.2%
E62King's Indian, fianchetto, Larsen system30328.7%55.3%
E63King's Indian, fianchetto, Panno variation324028.7%57.0%
E62King's Indian, fianchetto, Simagin variation16328.2%68.1%
E62King's Indian, fianchetto, Uhlmann (Szabo) variation49229.5%58.2%
E66King's Indian, fianchetto, Yugoslav Panno45627.2%55.7%
E64King's Indian, fianchetto, Yugoslav system17423.0%56.9%
E65King's Indian, fianchetto, Yugoslav, 7.O-O22431.3%55.8%
E69King's Indian, fianchetto, classical main line125530.3%60.0%
E67King's Indian, fianchetto, classical variation95331.4%54.8%
E68King's Indian, fianchetto, classical variation, 8.e4210729.0%58.7%
E62King's Indian, fianchetto, lesser Simagin (Spassky) variation41623.3%58.5%
E94King's Indian, orthodox variation186031.2%57.0%
E94King's Indian, orthodox, 7...Nbd7256126.3%56.9%
E95King's Indian, orthodox, 7...Nbd7, 8.Re197026.5%56.0%
E96King's Indian, orthodox, 7...Nbd7, main line21533.0%59.3%
E97King's Indian, orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation)842624.9%55.5%
E98King's Indian, orthodox, Aronin-Taimanov, 9.Ne1311721.3%58.9%
E99King's Indian, orthodox, Aronin-Taimanov, Benko attack4231.0%44.0%
E97King's Indian, orthodox, Aronin-Taimanov, bayonet attack308928.6%57.7%
E99King's Indian, orthodox, Aronin-Taimanov, main line13222.7%53.8%
E94King's Indian, orthodox, Donner variation22526.2%55.8%
C30King's gambit16924.3%55.9%
C33King's gambit accepted922.2%44.4%
C40King's knight opening616.7%41.7%
C34King's knight's gambit6114.8%48.4%
C38King's knight's gambit911.1%50.0%
C39King's knight's gambit10.0%100.0%
C20King's pawn game28920.4%52.1%
C44King's pawn game6926.1%47.8%
C50King's pawn game36422.5%54.9%
B00King's pawn opening273225.0%53.4%
C44Konstantinopolsky opening2213.6%43.2%
A00Lasker simul special14027.9%46.8%
C40Latvian counter-gambit15125.2%60.9%
C40Latvian gambit, 3.Bc4633.3%66.7%
C40Latvian, Fraser defence128.3%62.5%
C40Latvian, Polerio variation60.0%33.3%
C00Lengfellner system10827.8%61.1%
D00Levitsky attack (Queen's bishop attack)254624.5%49.8%
A00Mieses opening49118.1%52.9%
A40Modern defence200524.4%55.7%
A41Modern defence8927.0%56.2%
A42Modern defence, Averbakh system86528.9%58.0%
A42Modern defence, Averbakh system, Kotov variation60925.3%57.6%
A42Modern defence, Averbakh system, Randspringer variation728.6%28.6%
A03Mujannah opening70.0%42.9%
D70Neo-Gruenfeld (Kemeri) defence12241.0%54.9%
D70Neo-Gruenfeld defence34923.5%53.3%
D73Neo-Gruenfeld, 5.Nf3120140.5%53.0%
D71Neo-Gruenfeld, 5.cd19841.4%56.1%
D72Neo-Gruenfeld, 5.cd, main line32131.8%51.4%
D77Neo-Gruenfeld, 6.O-O161733.9%52.7%
D78Neo-Gruenfeld, 6.O-O c6152533.0%54.4%
D79Neo-Gruenfeld, 6.O-O, main line76936.7%51.8%
D74Neo-Gruenfeld, 6.cd Nxd5, 7.O-O51832.8%56.9%
D76Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb6109234.2%55.7%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc333344.1%54.5%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.dc4231.0%63.1%
E00Neo-Indian (Seirawan) attack55923.6%49.7%
E20Nimzo-Indian defence23225.4%44.6%
E40Nimzo-Indian, 4.e321026.7%53.8%
E46Nimzo-Indian, 4.e3 O-O18336.1%52.5%
E47Nimzo-Indian, 4.e3 O-O, 5.Bd381237.2%54.6%
E48Nimzo-Indian, 4.e3 O-O, 5.Bd3 d564930.8%51.5%
E41Nimzo-Indian, 4.e3 c578633.0%49.8%
E42Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein)200730.7%55.4%
E51Nimzo-Indian, 4.e3 e8g8, 5.Nf3 d7d524931.3%52.2%
E50Nimzo-Indian, 4.e3 e8g8, 5.Nf3, without ...d512031.7%55.0%
E49Nimzo-Indian, 4.e3, Botvinnik system42629.1%47.9%
E45Nimzo-Indian, 4.e3, Bronstein (Byrne) variation66230.7%54.8%
E53Nimzo-Indian, 4.e3, Gligoric system with 7...Nbd712239.3%55.7%
E54Nimzo-Indian, 4.e3, Gligoric system with 7...dc202535.6%53.8%
E55Nimzo-Indian, 4.e3, Gligoric system, Bronstein variation293934.7%53.5%
E54Nimzo-Indian, 4.e3, Gligoric system, Smyslov variation4334.9%54.7%
E53Nimzo-Indian, 4.e3, Keres variation10232.4%45.6%
E51Nimzo-Indian, 4.e3, Ragozin variation4751.1%57.4%
E40Nimzo-Indian, 4.e3, Taimanov variation10122.8%52.0%
E59Nimzo-Indian, 4.e3, main line204030.5%54.2%
E52Nimzo-Indian, 4.e3, main line with ...b669732.6%52.6%
E53Nimzo-Indian, 4.e3, main line with ...c5147336.9%51.6%
E56Nimzo-Indian, 4.e3, main line with 7...Nc6120029.3%54.9%
E58Nimzo-Indian, 4.e3, main line with 8...Bxc3283828.6%48.6%
E57Nimzo-Indian, 4.e3, main line with 8...dc and 9...cd2729.6%70.4%
E43Nimzo-Indian, Fischer variation62229.3%54.7%
E44Nimzo-Indian, Fischer variation, 5.Ne286424.2%56.8%
E20Nimzo-Indian, Kmoch variation101124.0%54.4%
E30Nimzo-Indian, Leningrad variation44830.4%51.1%
E30Nimzo-Indian, Leningrad, ...b5 gambit3240.6%42.2%
E31Nimzo-Indian, Leningrad, main line20120.9%46.3%
E20Nimzo-Indian, Mikenas attack1631.3%34.4%
E46Nimzo-Indian, Reshevsky variation140128.0%52.2%
E20Nimzo-Indian, Romanishin-Kasparov (Steiner) system72529.5%49.7%
E24Nimzo-Indian, Saemisch variation18131.5%50.6%
E25Nimzo-Indian, Saemisch variation11535.7%52.6%
E26Nimzo-Indian, Saemisch variation10329.1%46.6%
E27Nimzo-Indian, Saemisch variation4032.5%48.8%
E28Nimzo-Indian, Saemisch variation9028.9%53.3%
E24Nimzo-Indian, Saemisch, Botvinnik variation2626.9%44.2%
E29Nimzo-Indian, Saemisch, Capablanca variation12940.3%50.4%
E25Nimzo-Indian, Saemisch, Keres variation38330.8%50.7%
E26Nimzo-Indian, Saemisch, O'Kelly variation3622.2%36.1%
E25Nimzo-Indian, Saemisch, Romanovsky variation14042.1%50.4%
E29Nimzo-Indian, Saemisch, main line12930.2%59.3%
E46Nimzo-Indian, Simagin variation9329.0%46.8%
E22Nimzo-Indian, Spielmann variation12431.5%51.2%
E23Nimzo-Indian, Spielmann, 4...c5, 5.dc Nc62722.2%40.7%
E23Nimzo-Indian, Spielmann, Karlsbad variation1428.6%35.7%
E23Nimzo-Indian, Spielmann, San Remo variation475.0%62.5%
E32Nimzo-Indian, classical variation860732.3%53.1%
E33Nimzo-Indian, classical, 4...Nc612824.2%62.9%
E38Nimzo-Indian, classical, 4...c575530.1%57.5%
E32Nimzo-Indian, classical, Adorjan gambit18327.9%58.2%
E36Nimzo-Indian, classical, Botvinnik variation1533.3%56.7%
E33Nimzo-Indian, classical, Milner-Barry (Zurich) variation55427.3%52.6%
E34Nimzo-Indian, classical, Noa variation78232.7%52.7%
E36Nimzo-Indian, classical, Noa variation, 5.a340032.8%55.4%
E35Nimzo-Indian, classical, Noa variation, 5.cd ed94232.5%49.8%
E36Nimzo-Indian, classical, Noa variation, main line50.0%20.0%
E37Nimzo-Indian, classical, Noa variation, main line, 7.Qc215031.3%59.0%
E39Nimzo-Indian, classical, Pirc variation133531.8%56.6%
E37Nimzo-Indian, classical, San Remo variation1241.7%54.2%
E41Nimzo-Indian, e3, Huebner variation92425.8%49.1%
E21Nimzo-Indian, three knights variation316328.9%51.6%
E21Nimzo-Indian, three knights, Euwe variation837.5%56.3%
E21Nimzo-Indian, three knights, Korchnoi variation4334.9%61.6%
A01Nimzovich-Larsen attack91426.3%51.4%
A01Nimzovich-Larsen attack, Dutch variation16721.0%50.6%
A01Nimzovich-Larsen attack, English variation38927.2%50.9%
A01Nimzovich-Larsen attack, Indian variation58924.3%55.1%
A01Nimzovich-Larsen attack, Polish variation2634.6%51.9%
A01Nimzovich-Larsen attack, classical variation166826.7%48.6%
A01Nimzovich-Larsen attack, modern variation274831.1%50.0%
A01Nimzovich-Larsen attack, symmetrical variation61130.1%49.9%
A00Novosibirsk opening258.0%48.0%
A43Old Benoni defence242125.1%55.3%
A44Old Benoni defence6225.8%66.1%
A43Old Benoni, Franco-Benoni defence15125.2%61.6%
A43Old Benoni, Mujannah formation11921.0%60.9%
A43Old Benoni, Schmid's system2429.2%52.1%
A41Old Indian defence280425.5%50.9%
A53Old Indian defence174429.2%55.2%
A54Old Indian, Dus-Khotimirsky variation50.0%60.0%
A53Old Indian, Janowski variation58219.4%57.8%
A41Old Indian, Tartakower (Wade) variation317224.7%58.4%
A54Old Indian, Ukrainian variation18130.4%48.9%
A54Old Indian, Ukrainian variation, 4.Nf328926.0%54.5%
A55Old Indian, main line111727.0%62.1%
B00Owen defence71024.9%55.7%
A45Paleface attack19119.9%41.4%
C42Petrov three knights game49927.3%54.1%
C42Petrov's defence93124.7%53.8%
C42Petrov, Cochrane gambit4314.0%46.5%
C42Petrov, Cozio (Lasker) attack27932.3%51.6%
C42Petrov, Damiano variation3930.8%53.8%
C42Petrov, French attack1315.4%69.2%
C42Petrov, Italian variation15519.4%51.0%
C42Petrov, Kaufmann attack28032.5%58.4%
C42Petrov, Nimzovich attack71733.5%54.5%
C42Petrov, Paulsen attack24527.3%45.9%
C43Petrov, Urusov gambit468.7%45.7%
C42Petrov, classical attack182130.5%57.1%
C42Petrov, classical attack, Berger variation1936.8%55.3%
C42Petrov, classical attack, Chigorin variation96434.2%53.5%
C42Petrov, classical attack, Jaenisch variation325835.1%56.4%
C42Petrov, classical attack, Krause variation1100.0%50.0%
C42Petrov, classical attack, Marshall variation240029.4%55.3%
C42Petrov, classical attack, Mason variation8739.1%62.1%
C42Petrov, classical attack, Tarrasch variation933.3%83.3%
C42Petrov, classical attack, close variation20329.6%55.2%
C43Petrov, modern (Steinitz) attack15125.2%60.3%
C43Petrov, modern attack, Bardeleben variation1421.4%67.9%
C43Petrov, modern attack, Steinitz variation1127.3%59.1%
C43Petrov, modern attack, Symmetrical variation406131.2%53.6%
C43Petrov, modern attack, Trifunovic variation8534.1%51.2%
C43Petrov, modern attack, main line46631.8%58.6%
C41Philidor's defence52329.4%56.6%
C41Philidor, Boden variation1910.5%52.6%
C41Philidor, Hanham variation6535.4%65.4%
C41Philidor, Hanham, Delmar variation850.0%75.0%
C41Philidor, Hanham, Kmoch variation10.0%0.0%
C41Philidor, Hanham, Krause variation2623.1%69.2%
C41Philidor, Hanham, Schlechter variation6325.4%61.9%
C41Philidor, Hanham, Steiner variation3330.3%66.7%
C41Philidor, Improved Hanham variation124027.2%57.1%
C41Philidor, Larsen variation7724.7%68.2%
C41Philidor, Lopez counter-gambit1513.3%80.0%
C41Philidor, Nimzovich (Jaenisch) variation8733.3%47.7%
C41Philidor, Nimzovich variation2128.6%57.1%
C41Philidor, Nimzovich, Klein variation128.3%62.5%
C41Philidor, Nimzovich, Larobok variation5040.0%34.0%
C41Philidor, Nimzovich, Rellstab variation9033.3%64.4%
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 variation119625.1%57.9%
B07Pirc defence254626.2%54.8%
B07Pirc, 150 attack53830.5%51.9%
B09Pirc, Austrian attack74027.8%57.7%
B09Pirc, Austrian attack, 6.Bd3386630.8%58.0%
B09Pirc, Austrian attack, 6.Be373025.6%55.4%
B09Pirc, Austrian attack, 6.e530628.4%59.6%
B09Pirc, Austrian attack, Ljubojevic variation1323.1%73.1%
B09Pirc, Austrian attack, dragon formation113431.5%54.1%
B07Pirc, Byrne variation42725.1%55.6%
B07Pirc, Holmov system4233.3%50.0%
B07Pirc, Sveshnikov system94627.2%52.6%
B07Pirc, Ufimtsev-Pytel variation81523.9%55.9%
B07Pirc, bayonet (Mariotti) attack4515.6%52.2%
B08Pirc, classical (two knights) system85727.5%56.4%
B08Pirc, classical system, 5.Be2464430.9%58.3%
B08Pirc, classical, h3 system66129.7%56.3%
A00Polish (Sokolsky) opening143928.0%50.7%
A40Polish defence35324.9%57.2%
A00Polish, Outflank variation26425.4%49.4%
A00Polish, Tuebingen variation7321.9%52.1%
C44Ponziani counter-gambit18221.4%52.5%
C44Ponziani counter-gambit, Cordel variation10.0%100.0%
C44Ponziani counter-gambit, Schmidt attack10.0%0.0%
C44Ponziani opening16325.8%52.8%
C44Ponziani, Caro variation10738.3%48.1%
C44Ponziani, Jaenisch counter-attack66331.5%46.5%
C44Ponziani, Leonhardt variation5440.7%50.0%
C44Ponziani, Reti variation166.3%53.1%
C44Ponziani, Romanishin variation1060.0%60.0%
C44Ponziani, Steinitz variation9437.2%53.7%
A42Pterodactyl defence110827.1%61.6%
D21QGA, 3.Nf3111225.7%55.2%
D20QGA, 3.e4382628.7%55.9%
D26QGA, 4...e683432.3%52.9%
D24QGA, 4.Nc330832.1%54.7%
D25QGA, 4.e354428.9%57.3%
D22QGA, Alekhine defence34334.4%56.0%
D22QGA, Alekhine defence, Alatortsev variation1050.0%65.0%
D21QGA, Alekhine defense, Borisenko-Furman variation3330.3%39.4%
D24QGA, Bogolyubov variation22916.6%48.0%
D21QGA, Ericson variation2842.9%53.6%
D25QGA, Flohr variation6627.3%59.1%
D22QGA, Haberditz variation19732.5%59.9%
D25QGA, Janowsky-Larsen variation69028.8%56.6%
D20QGA, Linares variation6529.2%51.5%
D23QGA, Mannheim variation47330.7%54.7%
D25QGA, Smyslov variation19930.7%58.0%
D26QGA, classical variation127133.9%54.6%
D26QGA, classical variation, 6.O-O38735.4%57.8%
D27QGA, classical, 6...a6471535.7%53.8%
D28QGA, classical, 7...b526734.1%54.9%
D28QGA, classical, 7.Qe213042.3%55.8%
D29QGA, classical, 8...Bb777531.4%47.4%
D26QGA, classical, Furman variation475.0%37.5%
D27QGA, classical, Geller variation7829.5%44.2%
D27QGA, classical, Rubinstein variation376834.0%55.1%
D29QGA, classical, Smyslov variation9528.4%55.3%
D26QGA, classical, Steinitz variation9549.5%60.5%
D30QGD228232.2%52.3%
D51QGD2412.5%68.8%
D52QGD30030.3%55.5%
D30QGD Slav86530.8%53.2%
D15QGD Slav accepted27229.8%52.8%
D16QGD Slav accepted, Alapin variation22822.4%68.6%
D10QGD Slav defence484029.7%54.5%
D10QGD Slav defence, Alekhine variation36820.7%54.9%
D10QGD Slav defence, exchange variation230331.0%51.4%
D11QGD Slav, 3.Nf3461928.1%54.1%
D15QGD Slav, 4.Nc3384928.5%52.6%
D11QGD Slav, 4.e3432529.9%55.2%
D12QGD Slav, 4.e3 Bf5764628.1%54.3%
D15QGD Slav, 5.e3 (Alekhine variation)27626.1%50.0%
D12QGD Slav, Amsterdam variation7335.6%47.9%
D11QGD Slav, Breyer variation24327.2%52.3%
D17QGD Slav, Carlsbad variation67932.5%52.4%
D17QGD Slav, Czech defence86835.0%53.9%
D18QGD Slav, Dutch variation86031.9%57.9%
D19QGD Slav, Dutch variation265429.0%56.4%
D19QGD Slav, Dutch variation, main line47634.7%52.0%
D18QGD Slav, Dutch, Lasker variation2810.7%66.1%
D17QGD Slav, Krause attack82626.2%58.2%
D12QGD Slav, Landau variation1100.0%50.0%
D15QGD Slav, Schlechter variation29928.4%55.4%
D30QGD Slav, Semmering variation15232.9%48.0%
D15QGD Slav, Slav gambit25926.6%47.3%
D16QGD Slav, Smyslov variation12227.0%58.6%
D16QGD Slav, Soultanbeieff variation24239.3%56.4%
D16QGD Slav, Steiner variation35229.3%58.7%
D15QGD Slav, Suechting variation8220.7%54.3%
D15QGD Slav, Tolush-Geller gambit29028.3%44.5%
D17QGD Slav, Wiesbaden variation65827.5%58.4%
D10QGD Slav, Winawer counter-gambit29126.8%57.4%
D12QGD Slav, exchange variation41224.5%53.0%
D13QGD Slav, exchange variation131031.7%53.4%
D14QGD Slav, exchange variation, 6.Bf4 Bf571631.0%51.1%
D14QGD Slav, exchange, Trifunovic variation19239.6%50.0%
D43QGD semi-Slav1807029.1%53.4%
D45QGD semi-Slav, 5...Nd7126226.6%51.3%
D44QGD semi-Slav, 5.Bg5 dc38233.5%49.0%
D45QGD semi-Slav, 5.e3136328.2%57.2%
D46QGD semi-Slav, 6.Bd310528.6%50.5%
D47QGD semi-Slav, 7.Bc478526.8%57.6%
D46QGD semi-Slav, Bogolyubov variation44130.4%56.5%
D44QGD semi-Slav, Botvinnik system (anti-Meran)35024.6%48.0%
D46QGD semi-Slav, Chigorin defence84732.8%53.4%
D44QGD semi-Slav, Ekstrom variation5320.8%38.7%
D43QGD semi-Slav, Hastings variation825.0%25.0%
D48QGD semi-Slav, Meran33222.9%48.2%
D47QGD semi-Slav, Meran variation307131.4%53.0%
D48QGD semi-Slav, Meran, 8...a6617931.0%48.5%
D49QGD semi-Slav, Meran, Blumenfeld variation52029.8%51.3%
D48QGD semi-Slav, Meran, Pirc variation2437.5%52.1%
D49QGD semi-Slav, Meran, Rabinovich variation11340.7%61.1%
D49QGD semi-Slav, Meran, Rellstab attack3633.3%50.0%
D48QGD semi-Slav, Meran, Reynolds' variation132528.5%55.8%
D49QGD semi-Slav, Meran, Sozin variation40239.8%49.5%
D49QGD semi-Slav, Meran, Stahlberg variation8833.0%51.7%
D47QGD semi-Slav, Meran, Wade variation2070029.2%53.0%
D48QGD semi-Slav, Meran, old main line19733.5%57.9%
D46QGD semi-Slav, Romih variation22728.6%63.7%
D45QGD semi-Slav, Rubinstein (anti-Meran) system3135.5%59.7%
D45QGD semi-Slav, Stoltz variation3657130.5%52.3%
D45QGD semi-Slav, accelerated Meran (Alekhine variation)323333.0%53.0%
D44QGD semi-Slav, anti-Meran gambit186826.0%59.8%
D44QGD semi-Slav, anti-Meran, Alatortsev system5111.8%60.8%
D44QGD semi-Slav, anti-Meran, Lilienthal variation48121.4%58.9%
D44QGD semi-Slav, anti-Meran, Szabo variation21020.5%41.2%
D47QGD semi-Slav, neo-Meran (Lundin variation)70931.3%56.3%
D45QGD semi-Slav, stonewall defence2619.2%67.3%
D35QGD, 3...Nf618731.0%43.9%
D31QGD, 3.Nc387027.8%54.8%
D50QGD, 4.Bg530628.4%57.0%
D53QGD, 4.Bg5 Be758535.4%56.3%
D53QGD, 4.Bg5 Be7, 5.e3 O-O2138.1%52.4%
D51QGD, 4.Bg5 Nbd711631.0%56.0%
D37QGD, 4.Nf3625231.9%53.2%
D51QGD, 5...c66421.9%60.9%
D55QGD, 6.Nf333332.4%59.2%
D31QGD, Alapin variation4216.7%41.7%
D08QGD, Albin counter-gambit17636.4%55.7%
D09QGD, Albin counter-gambit, 5.g38528.2%54.1%
D08QGD, Albin counter-gambit, Alapin variation2334.8%60.9%
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 variation2821.4%53.6%
D50QGD, Been-Koomen variation1428.6%42.9%
D52QGD, Cambridge Springs defence7147.9%47.9%
D52QGD, Cambridge Springs defence, 7.cd38231.4%57.3%
D52QGD, Cambridge Springs defence, Argentine variation3119.4%48.4%
D52QGD, Cambridge Springs defence, Bogoljubow variation68529.3%54.2%
D52QGD, Cambridge Springs defence, Capablanca variation3834.2%48.7%
D52QGD, Cambridge Springs defence, Rubinstein variation22431.3%55.4%
D52QGD, Cambridge Springs defence, Yugoslav variation94728.0%58.3%
D50QGD, Canal (Venice) variation30.0%33.3%
D51QGD, Capablanca anti-Cambridge Springs variation1216.7%58.3%
D30QGD, Capablanca variation6020.0%46.7%
D30QGD, Capablanca-Duras variation81628.3%52.4%
D31QGD, Charousek (Petrosian) variation167827.7%53.4%
D07QGD, Chigorin defence216227.6%57.4%
D07QGD, Chigorin defence, Janowski variation53224.4%61.5%
D06QGD, Grau (Sahovic) defence123724.6%56.3%
D35QGD, Harrwitz attack7829.5%51.9%
D30QGD, Hastings variation74635.4%50.5%
D31QGD, Janowski variation17638.1%56.5%
D56QGD, Lasker defence51829.9%51.6%
D57QGD, Lasker defence, Bernstein variation2937.9%50.0%
D56QGD, Lasker defence, Teichmann variation14432.6%60.1%
D57QGD, Lasker defence, main line4831.3%57.3%
D53QGD, Lasker variation520.0%50.0%
D51QGD, Manhattan variation2025.0%52.5%
D06QGD, Marshall defence31727.1%59.0%
D55QGD, Neo-orthodox variation757.1%57.1%
D55QGD, Neo-orthodox variation, 7.Bh450331.4%53.9%
D55QGD, Neo-orthodox variation, 7.Bxf628736.2%51.6%
D60QGD, Orthodox defence28229.8%57.1%
D63QGD, Orthodox defence10725.2%57.5%
D62QGD, Orthodox defence, 7.Qc2 c5, 8.cd (Rubinstein)26441.7%50.8%
D63QGD, Orthodox defence, 7.Rc132933.4%55.0%
D66QGD, Orthodox defence, Bd3 line36430.2%55.5%
D67QGD, Orthodox defence, Bd3 line5843.1%50.9%
D67QGD, Orthodox defence, Bd3 line, 11.O-O18231.3%62.4%
D67QGD, Orthodox defence, Bd3 line, Alekhine variation11348.7%63.3%
D67QGD, Orthodox defence, Bd3 line, Capablanca freeing manoevre10.0%100.0%
D67QGD, Orthodox defence, Bd3 line, Janowski variation757.1%42.9%
D66QGD, Orthodox defence, Bd3 line, fianchetto variation3727.0%64.9%
D60QGD, Orthodox defence, Botvinnik variation23036.5%53.5%
D63QGD, Orthodox defence, Capablanca variation40.0%75.0%
D63QGD, Orthodox defence, Pillsbury attack2240.9%43.2%
D60QGD, Orthodox defence, Rauzer variation2326.1%56.5%
D64QGD, Orthodox defence, Rubinstein attack (with Rc1)16539.4%57.9%
D64QGD, Orthodox defence, Rubinstein attack, Gruenfeld variation10636.8%49.5%
D64QGD, Orthodox defence, Rubinstein attack, Karlsbad variation3036.7%41.7%
D64QGD, Orthodox defence, Rubinstein attack, Wolf variation3441.2%52.9%
D65QGD, Orthodox defence, Rubinstein attack, main line1827.8%41.7%
D61QGD, Orthodox defence, Rubinstein variation50730.2%53.6%
D63QGD, Orthodox defence, Swiss (Henneberger) variation21729.0%50.9%
D63QGD, Orthodox defence, Swiss, Karlsbad variation29929.1%52.3%
D68QGD, Orthodox defence, classical variation13836.2%54.3%
D68QGD, Orthodox defence, classical, 13.d1b1 (Maroczy)771.4%64.3%
D68QGD, Orthodox defence, classical, 13.d1c2 (Vidmar)8236.6%59.8%
D69QGD, Orthodox defence, classical, 13.de2458.3%50.0%
D55QGD, Petrosian variation46138.4%52.8%
D55QGD, Pillsbury attack10.0%0.0%
D38QGD, Ragozin variation708232.4%53.6%
D39QGD, Ragozin, Vienna variation143636.0%50.8%
D50QGD, Semi-Tarrasch2347.8%58.7%
D40QGD, Semi-Tarrasch defence99333.4%51.8%
D40QGD, Semi-Tarrasch defence, Pillsbury variation4537.8%52.2%
D41QGD, Semi-Tarrasch with e334035.6%54.9%
D41QGD, Semi-Tarrasch, 5.cd89734.6%57.5%
D42QGD, Semi-Tarrasch, 7.Bd360936.8%57.8%
D41QGD, Semi-Tarrasch, Kmoch variation2748.1%61.1%
D50QGD, Semi-Tarrasch, Krause variation250.0%25.0%
D50QGD, Semi-Tarrasch, Primitive Pillsbury variation2528.0%38.0%
D41QGD, Semi-Tarrasch, San Sebastian variation7925.3%68.4%
D40QGD, Semi-Tarrasch, symmetrical variation5933.9%49.2%
D30QGD, Spielmann variation450.0%75.0%
D30QGD, Stonewall variation333.3%83.3%
D32QGD, Tarrasch defence41431.2%54.5%
D32QGD, Tarrasch defence, 4.cd ed2828.6%46.4%
D32QGD, Tarrasch defence, Marshall gambit1936.8%50.0%
D32QGD, Tarrasch defence, Tarrasch gambit728.6%42.9%
D34QGD, Tarrasch, Bogolyubov variation540.0%20.0%
D33QGD, Tarrasch, Folkestone (Swedish) variation5334.0%58.5%
D33QGD, Tarrasch, Prague variation12334.1%61.0%
D34QGD, Tarrasch, Prague variation, 7...Be736930.6%59.2%
D34QGD, Tarrasch, Prague variation, 9.Bg5109338.5%57.9%
D34QGD, Tarrasch, Prague variation, Normal position109834.1%58.5%
D34QGD, Tarrasch, Reti variation6038.3%54.2%
D33QGD, Tarrasch, Schlechter-Rubinstein system1323.1%50.0%
D33QGD, Tarrasch, Schlechter-Rubinstein system, Rey Ardid variation1100.0%50.0%
D34QGD, Tarrasch, Stoltz variation20.0%100.0%
D33QGD, Tarrasch, Wagner variation2429.2%60.4%
D32QGD, Tarrasch, von Hennig-Schara gambit8330.1%59.6%
D58QGD, Tartakower (Makagonov-Bondarevsky) system1239032.5%52.6%
D59QGD, Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd554637.4%51.1%
D59QGD, Tartakower variation18946.6%41.3%
D30QGD, Vienna variation97740.2%51.9%
D37QGD, classical variation (5.Bf4)744533.1%53.3%
D35QGD, exchange variation35731.1%55.6%
D35QGD, exchange, Saemisch variation28528.1%53.0%
D35QGD, exchange, chameleon variation1827.8%63.9%
D35QGD, exchange, positional line223128.1%53.1%
D35QGD, exchange, positional line, 5...c6159528.2%55.7%
D36QGD, exchange, positional line, 6.Qc234333.5%50.9%
D31QGD, semi-Slav125730.3%54.1%
D31QGD, semi-Slav, Abrahams variation64830.4%44.5%
D31QGD, semi-Slav, Junge variation2817.9%62.5%
D31QGD, semi-Slav, Koomen variation450.0%50.0%
D31QGD, semi-Slav, Marshall gambit249428.7%54.5%
D31QGD, semi-Slav, Noteboom variation67728.2%52.2%
D06QGD, symmetrical (Austrian) defence9427.7%54.3%
C40QP counter-gambit (elephant gambit)17117.5%62.0%
C40QP counter-gambit, Maroczy gambit6123.0%62.3%
D06Queen's Gambit2119.0%57.1%
A50Queen's Indian accelerated28431.7%54.2%
A47Queen's Indian defence92028.0%53.5%
E12Queen's Indian defence49628.6%51.2%
E12Queen's Indian, 4.Nc3667129.0%52.6%
E12Queen's Indian, 4.Nc3, Botvinnik variation10829.6%50.9%
E13Queen's Indian, 4.Nc3, main line35425.7%55.8%
E14Queen's Indian, 4.e3268029.7%52.1%
E15Queen's Indian, 4.g3178041.0%55.3%
E15Queen's Indian, 4.g3 Bb724030.8%52.9%
E17Queen's Indian, 5.Bg2 Be79333.3%48.9%
E14Queen's Indian, Averbakh variation728.6%28.6%
E15Queen's Indian, Buerger variation2722.2%51.9%
E16Queen's Indian, Capablanca variation40032.8%57.4%
E17Queen's Indian, Euwe variation10436.5%60.6%
A47Queen's Indian, Marienbad system13530.4%49.3%
A47Queen's Indian, Marienbad system, Berg variation922.2%55.6%
E12Queen's Indian, Miles variation136630.9%53.1%
E15Queen's Indian, Nimzovich variation (exaggerated fianchetto)3087629.3%54.8%
E17Queen's Indian, Opovcensky variation127829.8%58.0%
E12Queen's Indian, Petrosian system1119631.8%53.3%
E16Queen's Indian, Riumin variation40932.0%55.9%
E15Queen's Indian, Rubinstein variation11422.8%50.9%
E16Queen's Indian, Yates variation75031.2%58.7%
E17Queen's Indian, anti-Queen's Indian system27433.2%53.5%
E17Queen's Indian, old main line, 6.O-O84430.0%56.3%
E18Queen's Indian, old main line, 7.Nc3293232.7%55.8%
E19Queen's Indian, old main line, 9.Qxc3165532.9%54.7%
A41Queen's Pawn478523.1%56.1%
D02Queen's bishop game335227.7%50.9%
D20Queen's gambit accepted192130.3%55.2%
D23Queen's gambit accepted18129.8%49.7%
D30Queen's gambit declined604530.2%53.4%
A40Queen's pawn542425.7%53.6%
A45Queen's pawn game501026.0%51.3%
A46Queen's pawn game590827.1%54.1%
A50Queen's pawn game187527.6%55.9%
D00Queen's pawn game193024.8%51.5%
D02Queen's pawn game1361027.3%53.0%
D04Queen's pawn game204729.8%52.8%
D05Queen's pawn game180628.3%53.7%
E00Queen's pawn game144927.3%53.8%
E10Queen's pawn game623131.4%54.0%
D02Queen's pawn game, Chigorin variation156623.9%54.6%
D02Queen's pawn game, Krause variation82333.4%51.7%
D05Queen's pawn game, Rubinstein (Colle-Zukertort) variation75432.0%55.6%
D05Queen's pawn game, Zukertort variation3327.3%59.1%
A45Queen's pawn, Bronstein gambit1711.8%47.1%
A40Queen's pawn, Charlick (Englund) gambit60.0%83.3%
D00Queen's pawn, Chigorin variation146921.5%51.9%
A40Queen's pawn, English defence52021.0%54.9%
A40Queen's pawn, Franco-Indian (Keres) defence303928.1%55.8%
A40Queen's pawn, Keres defence334827.7%55.4%
A40Queen's pawn, Lundin (Kevitz-Mikenas) defence66126.8%56.5%
D00Queen's pawn, Mason variation183323.8%51.9%
D00Queen's pawn, Mason variation, Steinitz counter-gambit55230.1%50.2%
E60Queen's pawn, Mengarini attack14024.3%50.7%
A46Queen's pawn, Torre attack128326.2%51.6%
A46Queen's pawn, Torre attack, Wagner gambit2718.5%38.9%
A46Queen's pawn, Yusupov-Rubinstein system123929.9%51.2%
D00Queen's pawn, stonewall attack10025.0%49.5%
A09Reti accepted123927.6%53.1%
A09Reti accepted, Keres variation12021.7%59.2%
A04Reti opening1440827.5%52.8%
A05Reti opening909328.3%52.6%
A06Reti opening308126.0%53.5%
A09Reti opening98227.1%53.3%
A04Reti v Dutch222325.4%56.3%
A05Reti, King's Indian attack212129.6%55.7%
A07Reti, King's Indian attack317233.9%53.0%
A08Reti, King's Indian attack110729.2%54.8%
A07Reti, King's Indian attack (Barcza system)961629.3%52.9%
A07Reti, King's Indian attack (with ...c5)42626.1%48.2%
A08Reti, King's Indian attack, French variation111130.8%50.7%
A07Reti, King's Indian attack, Keres variation73030.5%52.3%
A07Reti, King's Indian attack, Pachman system25023.2%52.4%
A05Reti, King's Indian attack, Reti-Smyslov variation14427.8%50.7%
A05Reti, King's Indian attack, Spassky's variation78429.8%53.1%
A07Reti, King's Indian attack, Yugoslav variation466831.2%53.6%
A04Reti, Lisitsin gambit deferred5820.7%43.1%
A06Reti, Nimzovich-Larsen attack392531.2%50.9%
A04Reti, Pirc-Lisitsin gambit15822.2%58.5%
A04Reti, Wade defence540.0%80.0%
A09Reti, advance variation147725.4%48.1%
A06Reti, old Indian attack31923.5%52.5%
B00Reversed Grob (Borg/Basman defence/macho Grob)16917.2%51.8%
D01Richter-Veresov attack116726.2%46.7%
D01Richter-Veresov attack, Richter variation5334.0%37.7%
D01Richter-Veresov attack, Veresov variation5520.0%55.5%
B06Robatsch (modern) defence959329.5%56.3%
B06Robatsch defence120027.6%58.7%
B07Robatsch defence, Geller's system153830.0%56.9%
B06Robatsch defence, Gurgenidze variation69123.6%63.0%
B06Robatsch defence, Pseudo-Austrian attack91825.5%58.8%
A41Robatsch defence, Rossolimo variation16527.9%54.5%
B06Robatsch defence, Two knights variation57929.9%58.1%
B06Robatsch defence, Two knights, Suttles variation244834.3%58.3%
B06Robatsch defence, three pawns attack9316.1%52.2%
C50Rousseau gambit50.0%60.0%
C70Ruy Lopez7628.9%52.6%
C60Ruy Lopez (Spanish opening)15122.5%51.7%
C78Ruy Lopez, ...b5 & ...d68327.7%47.6%
C78Ruy Lopez, 5.O-O243831.5%55.0%
C70Ruy Lopez, Alapin's defence deferred70.0%42.9%
C77Ruy Lopez, Anderssen variation132929.5%49.5%
C78Ruy Lopez, Archangelsk (counterthrust) variation325829.5%54.1%
C65Ruy Lopez, Berlin defence408929.3%51.6%
C65Ruy Lopez, Berlin defence, 4.O-O17323.7%61.0%
C66Ruy Lopez, Berlin defence, 4.O-O, d610041.0%52.5%
C65Ruy Lopez, Berlin defence, Anderssen variation616.7%8.3%
C65Ruy Lopez, Berlin defence, Beverwijk variation53130.1%52.7%
C67Ruy Lopez, Berlin defence, Cordel variation3743.2%51.4%
C65Ruy Lopez, Berlin defence, Duras variation2931.0%46.6%
C65Ruy Lopez, Berlin defence, Kaufmann variation1118.2%45.5%
C67Ruy Lopez, Berlin defence, Minckwitz variation5339.6%63.2%
C65Ruy Lopez, Berlin defence, Mortimer variation175.9%67.6%
C65Ruy Lopez, Berlin defence, Nyholm attack8835.2%54.0%
C67Ruy Lopez, Berlin defence, Pillsbury variation366.7%33.3%
C67Ruy Lopez, Berlin defence, Rio de Janeiro variation850.0%75.0%
C67Ruy Lopez, Berlin defence, Rosenthal variation3542.9%55.7%
C67Ruy Lopez, Berlin defence, Trifunovic variation30.0%100.0%
C67Ruy Lopez, Berlin defence, Winawer attack1070.0%45.0%
C67Ruy Lopez, Berlin defence, Zukertort variation1457.1%42.9%
C66Ruy Lopez, Berlin defence, hedgehog variation15238.2%53.3%
C67Ruy Lopez, Berlin defence, open variation722134.3%52.5%
C61Ruy Lopez, Bird's defence29426.5%58.5%
C61Ruy Lopez, Bird's defence, Paulsen variation1428.6%50.0%
C60Ruy Lopez, Brentano defence616.7%58.3%
C70Ruy Lopez, Caro variation8129.6%53.1%
C70Ruy Lopez, Classical defence deferred52026.3%51.8%
C64Ruy Lopez, Cordel gambit4727.7%73.4%
C60Ruy Lopez, Cozio defence36725.9%56.8%
C70Ruy Lopez, Cozio defence deferred12931.8%51.6%
C60Ruy Lopez, Cozio defence, Paulsen variation2934.5%51.7%
C85Ruy Lopez, Exchange variation doubly deferred (DERLD)151830.8%53.2%
C70Ruy Lopez, Graz variation933.3%61.1%
C60Ruy Lopez, Lucena defence2321.7%45.7%
C89Ruy Lopez, Marshall counter-attack263033.9%51.0%
C89Ruy Lopez, Marshall counter-attack, 11...c685635.7%49.5%
C89Ruy Lopez, Marshall, Herman Steiner variation296.9%48.3%
C89Ruy Lopez, Marshall, Kevitz variation1428.6%42.9%
C89Ruy Lopez, Marshall, main line, 12.d2d4100726.7%56.1%
C89Ruy Lopez, Marshall, main line, 14...Qh374541.9%49.0%
C89Ruy Lopez, Marshall, main line, Spassky variation1100.0%50.0%
C78Ruy Lopez, Moeller defence77730.0%51.9%
C77Ruy Lopez, Morphy defence40232.6%54.6%
C77Ruy Lopez, Morphy defence, Duras variation9331.2%47.8%
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 defence34126.1%57.3%
C70Ruy Lopez, Schliemann defence deferred4316.3%54.7%
C63Ruy Lopez, Schliemann defence, Berger variation64433.2%55.9%
C74Ruy Lopez, Siesta, Kopayev variation12227.9%51.6%
C79Ruy Lopez, Steinitz defence deferred (Russian defence)34232.5%52.2%
C79Ruy Lopez, Steinitz defence deferred, Lipnitsky variation1844.4%50.0%
C79Ruy Lopez, Steinitz defence deferred, Rubinstein variation1216.7%66.7%
C70Ruy Lopez, Taimanov (chase/wing/accelerated counterthrust) variation25226.6%54.6%
C88Ruy Lopez, Trajkovic counter-attack28627.3%53.1%
C77Ruy Lopez, Treybal (Bayreuth) variation (exchange var. deferred)19031.1%50.8%
C60Ruy Lopez, Vinogradov variation933.3%50.0%
C78Ruy Lopez, Wing attack1947.4%60.5%
C77Ruy Lopez, Wormald (Alapin) attack63932.6%51.0%
C77Ruy Lopez, Wormald attack, Gruenfeld variation366.7%66.7%
C86Ruy Lopez, Worrall attack9228.3%58.7%
C86Ruy Lopez, Worrall attack, sharp line27432.5%49.5%
C86Ruy Lopez, Worrall attack, solid line24830.2%51.0%
C64Ruy Lopez, classical (Cordel) defence66631.8%51.2%
C64Ruy Lopez, classical defence, 4.c342027.1%51.9%
C64Ruy Lopez, classical defence, Benelux variation 56133.3%50.9%
C64Ruy Lopez, classical defence, Boden variation1100.0%50.0%
C64Ruy Lopez, classical defence, Charousek variation1717.6%67.6%
C88Ruy Lopez, closed404827.3%48.3%
C96Ruy Lopez, closed (10...c5)118629.7%58.3%
C96Ruy Lopez, closed (8...Na5)5225.0%52.9%
C90Ruy Lopez, closed (with ...d6)238527.6%49.2%
C66Ruy Lopez, closed Berlin defence, Bernstein variation3438.2%45.6%
C66Ruy Lopez, closed Berlin defence, Chigorin variation40.0%75.0%
C66Ruy Lopez, closed Berlin defence, Showalter variation6349.2%59.5%
C66Ruy Lopez, closed Berlin defence, Wolf variation12541.6%55.2%
C84Ruy Lopez, closed defence115131.8%51.9%
C88Ruy Lopez, closed, 7...O-O689830.1%51.8%
C88Ruy Lopez, closed, 7...d6, 8.d412623.8%38.1%
C88Ruy Lopez, closed, 8.c34427.3%50.0%
C91Ruy Lopez, closed, 9.d4372926.8%55.7%
C92Ruy Lopez, closed, 9.h355426.7%56.0%
C87Ruy Lopez, closed, Averbach variation38729.7%57.2%
C88Ruy Lopez, closed, Balla variation2937.9%63.8%
C91Ruy Lopez, closed, Bogolyubov variation607531.9%51.8%
C96Ruy Lopez, closed, Borisenko defence8127.2%58.0%
C94Ruy Lopez, closed, Breyer defence12237.7%53.3%
C95Ruy Lopez, closed, Breyer, Borisenko variation231330.2%56.4%
C95Ruy Lopez, closed, Breyer, Gligoric variation6819.1%65.4%
C95Ruy Lopez, closed, Breyer, Simagin variation7742.9%63.0%
C97Ruy Lopez, closed, Chigorin defence169822.7%60.0%
C98Ruy Lopez, closed, Chigorin, 12...Nc625925.9%63.9%
C99Ruy Lopez, closed, Chigorin, 12...c5d4206434.3%59.0%
C98Ruy Lopez, closed, Chigorin, Rauzer attack10.0%0.0%
C92Ruy Lopez, closed, Flohr-Zaitsev system (Lenzerheide variation)346232.4%53.6%
C96Ruy Lopez, closed, Keres (...Nd7) defence32137.7%61.2%
C92Ruy Lopez, closed, Keres (9...a5) variation4723.4%58.5%
C92Ruy Lopez, closed, Kholmov variation19126.7%59.4%
C90Ruy Lopez, closed, Lutikov variation2650.0%51.9%
C90Ruy Lopez, closed, Pilnik variation304226.0%52.3%
C92Ruy Lopez, closed, Ragozin-Petrosian (`Keres') variation30733.2%64.5%
C96Ruy Lopez, closed, Rossolimo defence520.0%70.0%
C93Ruy Lopez, closed, Smyslov defence24433.6%57.0%
C90Ruy Lopez, closed, Suetin variation5326.4%47.2%
C88Ruy Lopez, closed, anti-Marshall 8.a4155828.3%51.8%
C84Ruy Lopez, closed, centre attack21831.7%50.2%
C68Ruy Lopez, exchange variation32025.6%56.9%
C69Ruy Lopez, exchange variation, 5.O-O58528.0%52.3%
C69Ruy Lopez, exchange variation, Alapin gambit14331.5%51.4%
C68Ruy Lopez, exchange, Alekhine variation7431.1%43.9%
C69Ruy Lopez, exchange, Bronstein variation49931.1%51.6%
C69Ruy Lopez, exchange, Gligoric variation57033.7%53.9%
C68Ruy Lopez, exchange, Keres variation24337.0%51.4%
C68Ruy Lopez, exchange, Romanovsky variation1118.2%45.5%
C60Ruy Lopez, fianchetto (Smyslov/Barnes) defence44534.4%52.2%
C70Ruy Lopez, fianchetto defence deferred1338.5%73.1%
C77Ruy Lopez, four knights (Tarrasch) variation29330.0%55.3%
C71Ruy Lopez, modern Steinitz defence13729.2%51.1%
C74Ruy Lopez, modern Steinitz defence6541.5%56.2%
C75Ruy Lopez, modern Steinitz defence28028.2%58.0%
C72Ruy Lopez, modern Steinitz defence, 5.O-O47629.6%55.4%
C73Ruy Lopez, modern Steinitz defence, Alapin variation27625.4%55.4%
C71Ruy Lopez, modern Steinitz defence, Duras (Keres) variation17331.8%51.7%
C73Ruy Lopez, modern Steinitz defence, Richter variation22830.7%50.4%
C75Ruy Lopez, modern Steinitz defence, Rubinstein variation14132.6%58.9%
C71Ruy Lopez, modern Steinitz defence, Three knights variation2825.0%58.9%
C76Ruy Lopez, modern Steinitz defence, fianchetto (Bronstein) variation57527.8%51.0%
C74Ruy Lopez, modern Steinitz defence, siesta variation4425.0%48.9%
C62Ruy Lopez, old Steinitz defence61527.6%54.6%
C62Ruy Lopez, old Steinitz defence, Nimzovich attack2817.9%69.6%
C62Ruy Lopez, old Steinitz defence, semi-Duras variation30.0%100.0%
C80Ruy Lopez, open (Tarrasch) defence12339.0%49.6%
C67Ruy Lopez, open Berlin defence, 5...Be711333.6%55.8%
C67Ruy Lopez, open Berlin defence, Showalter variation425.0%62.5%
C67Ruy Lopez, open Berlin defence, l'Hermet variation8932.6%44.4%
C80Ruy Lopez, open, 6.d44727.7%60.6%
C80Ruy Lopez, open, 7.Bb348930.7%51.7%
C80Ruy Lopez, open, 8...Be6131231.8%46.2%
C80Ruy Lopez, open, 8.de1520.0%56.7%
C83Ruy Lopez, open, 9...Be7, 10.Re12030.0%55.0%
C82Ruy Lopez, open, 9.c3616.7%58.3%
C80Ruy Lopez, open, Berger variation666.7%33.3%
C82Ruy Lopez, open, Berlin variation1833.3%61.1%
C80Ruy Lopez, open, Bernstein variation94635.6%58.1%
C80Ruy Lopez, open, Bernstein variation, Karpov gambit1163.6%68.2%
C83Ruy Lopez, open, Breslau variation50.0%80.0%
C82Ruy Lopez, open, Dilworth variation7728.6%54.5%
C80Ruy Lopez, open, Friess attack850.0%37.5%
C80Ruy Lopez, open, Harksen gambit50.0%60.0%
C81Ruy Lopez, open, Howell attack9537.9%57.9%
C81Ruy Lopez, open, Howell attack, Ekstroem variation1752.9%61.8%
C82Ruy Lopez, open, Italian variation8831.8%61.4%
C83Ruy Lopez, open, Malkin variation1330.8%69.2%
C82Ruy Lopez, open, Motzko attack8036.3%51.9%
C82Ruy Lopez, open, Motzko attack, Nenarokov variation520.0%30.0%
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 variation27638.0%59.6%
C80Ruy Lopez, open, Tartakower variation1136.4%63.6%
C80Ruy Lopez, open, Zukertort variation714.3%50.0%
C83Ruy Lopez, open, classical defence18039.4%57.5%
A06Santasiere's folly13335.3%45.5%
A00Saragossa opening90218.8%50.7%
B01Scandinavian (centre counter) defence462627.0%60.0%
B01Scandinavian defence140529.3%57.8%
B01Scandinavian defence, Gruenfeld variation1435.7%53.6%
B01Scandinavian defence, Lasker variation14528.3%63.8%
B01Scandinavian gambit18530.3%47.0%
B01Scandinavian, Anderssen counter-attack250.0%75.0%
B01Scandinavian, Anderssen counter-attack, Goteborg system50.0%100.0%
B01Scandinavian, Icelandic gambit7530.7%50.0%
B01Scandinavian, Kiel variation520.0%90.0%
B01Scandinavian, Marshall variation84827.8%59.9%
B01Scandinavian, Mieses-Kotrvc gambit267.7%50.0%
B01Scandinavian, Pytel-Wade variation270634.2%59.9%
B01Scandinavian, Richter variation1822.2%72.2%
C44Scotch gambit9526.3%46.8%
C44Scotch gambit, Anderssen (Paulsen, Suhle) counter-attack1100.0%50.0%
C44Scotch gambit, Benima defence5927.1%52.5%
C44Scotch gambit, Dubois-Reti defence60731.3%50.1%
C45Scotch game343231.4%53.2%
C44Scotch opening4526.7%42.2%
C45Scotch, Blackburne attack1957.9%50.0%
C45Scotch, Blumenfeld attack1040.0%20.0%
C45Scotch, Ghulam Kassim variation333.3%83.3%
C44Scotch, Goering gambit17430.5%49.7%
C44Scotch, Goering gambit, Bardeleben variation1020.0%40.0%
C45Scotch, Horwitz attack3036.7%55.0%
C44Scotch, Lolli variation7718.2%53.2%
C45Scotch, Meitner variation4235.7%53.6%
C45Scotch, Mieses variation202733.1%51.0%
C45Scotch, Paulsen attack1428.6%28.6%
C45Scotch, Potter variation26735.2%47.6%
C45Scotch, Pulling counter-attack2520.0%58.0%
C44Scotch, Relfsson gambit ('MacLopez')4012.5%46.3%
C45Scotch, Romanishin variation2931.0%43.1%
C45Scotch, Rosenthal variation10.0%0.0%
C45Scotch, Schmidt variation97139.8%50.7%
C45Scotch, Steinitz variation5223.1%48.1%
C45Scotch, Tartakower variation1540.0%60.0%
A44Semi-Benoni (`blockade variation')98320.9%61.0%
B50Sicilian495427.5%52.5%
B54Sicilian95825.5%54.2%
B56Sicilian506426.0%54.4%
B20Sicilian defence583124.0%48.6%
B27Sicilian defence10828.7%59.7%
B30Sicilian defence401128.2%52.4%
B32Sicilian defence97727.8%52.3%
B33Sicilian defence93029.2%52.6%
B40Sicilian defence823928.5%52.5%
B44Sicilian defence42329.8%53.0%
B22Sicilian, 2.c3, Heidenfeld variation4228.6%42.9%
B27Sicilian, Acton extension1323.1%57.7%
B22Sicilian, Alapin's variation (2.c3)1617931.5%53.9%
B40Sicilian, Anderssen variation208431.5%55.6%
B21Sicilian, Andreaschek gambit1747.1%64.7%
B58Sicilian, Boleslavsky variation87233.0%49.0%
B59Sicilian, Boleslavsky variation, 7.Nb314938.9%53.7%
B58Sicilian, Boleslavsky, Louma variation3727.0%62.2%
B51Sicilian, Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack250330.1%55.4%
B52Sicilian, Canal-Sokolsky attack, 3...Bd7144334.3%50.6%
B52Sicilian, Canal-Sokolsky attack, Bronstein gambit16627.1%43.1%
B52Sicilian, Canal-Sokolsky attack, Sokolsky variation104533.7%54.4%
B53Sicilian, Chekhover variation85935.7%49.5%
B53Sicilian, Chekhover, Zaitsev variation3917.9%52.6%
B32Sicilian, Flohr variation14027.9%56.1%
B20Sicilian, Gloria variation922.2%55.6%
B21Sicilian, Grand Prix attack201425.1%49.4%
B23Sicilian, Grand Prix attack54725.8%52.6%
B23Sicilian, Grand Prix attack, Schofman variation1827.8%30.6%
B27Sicilian, Hungarian variation1020533.7%57.2%
B41Sicilian, Kan variation26929.0%53.9%
B42Sicilian, Kan, 5.Bd3427629.1%56.7%
B43Sicilian, Kan, 5.Nc3567329.0%55.2%
B42Sicilian, Kan, Gipslis variation19329.0%57.0%
B41Sicilian, Kan, Maroczy bind (Reti variation)73128.6%54.0%
B41Sicilian, Kan, Maroczy bind - Bronstein variation5928.8%56.8%
B42Sicilian, Kan, Polugaievsky variation279926.5%54.2%
B42Sicilian, Kan, Swiss cheese variation29527.5%56.4%
B27Sicilian, Katalimov variation16025.6%53.4%
B20Sicilian, Keres variation (2.Ne2)111525.6%53.0%
B32Sicilian, Labourdonnais-Loewenthal (Kalashnikov) variation157729.2%53.6%
B32Sicilian, Labourdonnais-Loewenthal variation28825.7%55.2%
B57Sicilian, Magnus Smith trap4129.3%53.7%
B40Sicilian, Marshall variation2416.7%41.7%
B90Sicilian, Najdorf1145324.8%51.0%
B98Sicilian, Najdorf variation20724.2%48.8%
B95Sicilian, Najdorf, 6...e6123527.2%52.7%
B94Sicilian, Najdorf, 6.Bg5147124.7%53.0%
B93Sicilian, Najdorf, 6.f4247029.4%49.4%
B98Sicilian, Najdorf, 7...Be725924.7%52.5%
B99Sicilian, Najdorf, 7...Be7 main line158022.0%54.6%
B97Sicilian, Najdorf, 7...Qb6236623.6%46.7%
B96Sicilian, Najdorf, 7.f4179622.9%49.2%
B90Sicilian, Najdorf, Adams attack238422.9%53.4%
B98Sicilian, Najdorf, Browne variation9632.3%57.8%
B90Sicilian, Najdorf, Byrne (English) attack4748724.7%51.5%
B98Sicilian, Najdorf, Goteborg (Argentine) variation1435.7%46.4%
B90Sicilian, Najdorf, Lipnitzky attack218628.7%48.8%
B92Sicilian, Najdorf, Opovcensky variation1069829.7%52.6%
B97Sicilian, Najdorf, Poisoned pawn variation326927.0%44.4%
B96Sicilian, Najdorf, Polugayevsky variation13324.8%52.3%
B96Sicilian, Najdorf, Polugayevsky, Simagin variation4520.0%52.2%
B91Sicilian, Najdorf, Zagreb (fianchetto) variation136927.0%51.2%
B32Sicilian, Nimzovich variation2814.3%53.6%
B31Sicilian, Nimzovich-Rossolimo attack (with ...g6, without ...d6)384530.1%55.6%
B30Sicilian, Nimzovich-Rossolimo attack (without ...d6)631228.8%54.5%
B31Sicilian, Nimzovich-Rossolimo attack, Gurgenidze variation1040.0%40.0%
B29Sicilian, Nimzovich-Rubinstein variation48427.3%56.6%
B29Sicilian, Nimzovich-Rubinstein; Rubinstein counter-gambit6434.4%56.3%
B28Sicilian, O'Kelly variation77426.9%57.4%
B33Sicilian, Pelikan (Lasker/Sveshnikov) variation110023.8%53.0%
B33Sicilian, Pelikan, Bird variation23828.6%58.0%
B33Sicilian, Pelikan, Chelyabinsk variation560326.9%55.3%
B40Sicilian, Pin variation (Sicilian counter-attack)9119.8%54.9%
B40Sicilian, Pin, Jaffe variation30.0%100.0%
B40Sicilian, Pin, Koch variation12223.8%70.1%
B54Sicilian, Prins (Moscow) variation45531.0%52.0%
B55Sicilian, Prins variation, Venice attack11735.9%56.4%
B27Sicilian, Quinteros variation9818.4%59.2%
B60Sicilian, Richter-Rauzer124225.3%57.4%
B62Sicilian, Richter-Rauzer, 6...e617525.7%48.3%
B60Sicilian, Richter-Rauzer, Bondarevsky variation2433.3%54.2%
B62Sicilian, Richter-Rauzer, Keres variation53530.5%53.7%
B60Sicilian, Richter-Rauzer, Larsen variation32823.5%54.7%
B61Sicilian, Richter-Rauzer, Larsen variation, 7.Qd258027.6%60.2%
B62Sicilian, Richter-Rauzer, Margate (Alekhine) variation51032.4%49.5%
B62Sicilian, Richter-Rauzer, Podvebrady variation3228.1%51.6%
B63Sicilian, Richter-Rauzer, Rauzer attack43027.0%55.6%
B63Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7200727.5%52.2%
B65Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9...Nxd4149930.7%56.6%
B64Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9.f461232.7%54.6%
B66Sicilian, Richter-Rauzer, Rauzer attack, 7...a61469124.9%51.2%
B69Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 11.Bxf644823.9%57.3%
B67Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 8...Bd7697725.1%52.6%
B68Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 9...Be724027.9%56.0%
B64Sicilian, Richter-Rauzer, Rauzer attack, Geller variation205.0%77.5%
B84Sicilian, Scheveningen (Paulsen), classical variation887928.9%51.7%
B80Sicilian, Scheveningen variation140124.0%53.6%
B83Sicilian, Scheveningen, 6.Be281031.2%51.0%
B82Sicilian, Scheveningen, 6.f476629.9%55.7%
B80Sicilian, Scheveningen, English variation57325.0%50.9%
B81Sicilian, Scheveningen, Keres attack464225.8%58.9%
B82Sicilian, Scheveningen, Tal variation18717.1%59.9%
B80Sicilian, Scheveningen, Vitolins variation11019.1%44.1%
B85Sicilian, Scheveningen, classical24639.0%52.8%
B85Sicilian, Scheveningen, classical main line69840.0%54.2%
B85Sicilian, Scheveningen, classical variation with ...Qc7 and ...Nc62321.7%50.0%
B85Sicilian, Scheveningen, classical, Maroczy system6633.3%54.5%
B84Sicilian, Scheveningen, classical, Nd7 system8223.2%53.0%
B80Sicilian, Scheveningen, fianchetto variation52328.3%51.6%
B21Sicilian, Smith-Morra gambit95128.0%50.4%
B86Sicilian, Sozin attack23124.7%44.4%
B87Sicilian, Sozin with ...a6 and ...b5137427.7%48.3%
B89Sicilian, Sozin, 7.Be3423426.8%49.0%
B57Sicilian, Sozin, Benko variation509029.4%50.9%
B88Sicilian, Sozin, Fischer variation4250.0%51.2%
B88Sicilian, Sozin, Leonhardt variation63632.5%49.6%
B57Sicilian, Sozin, not Scheveningen54128.8%55.3%
B20Sicilian, Steinitz variation116525.4%53.8%
B27Sicilian, Stiletto (Althouse) variation1414.3%71.4%
B33Sicilian, Sveshnikov variation304826.2%52.8%
B44Sicilian, Szen (`anti-Taimanov') variation96531.3%51.4%
B44Sicilian, Szen variation, Dely-Kasparov gambit2236.4%54.5%
B44Sicilian, Szen, hedgehog variation41229.9%48.2%
B47Sicilian, Taimanov (Bastrikov) variation1080330.7%54.2%
B45Sicilian, Taimanov variation428727.5%54.3%
B46Sicilian, Taimanov variation554628.8%54.7%
B48Sicilian, Taimanov variation684127.9%54.0%
B49Sicilian, Taimanov variation207031.0%55.0%
B45Sicilian, Taimanov, American attack1747.1%41.2%
B89Sicilian, Velimirovic attack168224.5%51.0%
B56Sicilian, Venice attack64434.5%63.0%
B39Sicilian, accelerated fianchetto, Breyer variation148332.6%61.0%
B36Sicilian, accelerated fianchetto, Gurgenidze variation35337.7%53.1%
B36Sicilian, accelerated fianchetto, Maroczy bind141135.8%55.8%
B37Sicilian, accelerated fianchetto, Maroczy bind, 5...Bg732434.6%52.5%
B38Sicilian, accelerated fianchetto, Maroczy bind, 6.Be3289638.8%57.0%
B37Sicilian, accelerated fianchetto, Simagin variation1030.0%45.0%
B34Sicilian, accelerated fianchetto, exchange variation2231.8%47.7%
B34Sicilian, accelerated fianchetto, modern variation104032.0%52.2%
B35Sicilian, accelerated fianchetto, modern variation with Bc4436534.1%53.8%
B23Sicilian, chameleon variation106228.2%55.0%
B58Sicilian, classical73235.2%52.2%
B23Sicilian, closed545026.6%52.9%
B24Sicilian, closed57527.5%49.4%
B25Sicilian, closed24829.0%50.0%
B23Sicilian, closed, 2...Nc6318327.6%53.0%
B26Sicilian, closed, 6.Be351824.9%47.6%
B25Sicilian, closed, 6.Ne2 e5 (Botvinnik)9113.2%52.7%
B25Sicilian, closed, 6.f481428.6%49.4%
B25Sicilian, closed, 6.f4 e5 (Botvinnik)8923.6%46.6%
B23Sicilian, closed, Korchnoi variation33232.8%48.0%
B24Sicilian, closed, Smyslov variation837.5%68.8%
B70Sicilian, dragon variation75529.7%49.7%
B72Sicilian, dragon, 6.Be322726.9%50.4%
B71Sicilian, dragon, Levenfish variation7133.8%49.3%
B71Sicilian, dragon, Levenfish; Flohr variation425.0%62.5%
B75Sicilian, dragon, Yugoslav attack37628.7%51.9%
B78Sicilian, dragon, Yugoslav attack, 10.O-O-O104024.1%54.2%
B79Sicilian, dragon, Yugoslav attack, 12.h414531.0%64.5%
B76Sicilian, dragon, Yugoslav attack, 7...O-O58029.7%50.3%
B77Sicilian, dragon, Yugoslav attack, 9...Bd746525.6%55.2%
B77Sicilian, dragon, Yugoslav attack, 9.Bc49329.0%53.2%
B77Sicilian, dragon, Yugoslav attack, Byrne variation50.0%80.0%
B76Sicilian, dragon, Yugoslav attack, Rauser variation130625.7%59.2%
B72Sicilian, dragon, classical attack6929.0%58.0%
B73Sicilian, dragon, classical, 8.O-O21234.4%55.4%
B74Sicilian, dragon, classical, 9.Nb322533.8%49.8%
B74Sicilian, dragon, classical, Alekhine variation3522.9%62.9%
B72Sicilian, dragon, classical, Amsterdam variation6338.1%44.4%
B72Sicilian, dragon, classical, Grigoriev variation850.0%62.5%
B72Sicilian, dragon, classical, Nottingham variation8328.9%45.8%
B74Sicilian, dragon, classical, Reti-Tartakower variation20034.0%52.5%
B73Sicilian, dragon, classical, Richter variation19536.9%48.7%
B74Sicilian, dragon, classical, Spielmann variation6628.8%53.8%
B73Sicilian, dragon, classical, Zollner gambit1637.5%25.0%
B83Sicilian, modern Scheveningen82029.6%49.8%
B83Sicilian, modern Scheveningen, main line69635.9%52.9%
B83Sicilian, modern Scheveningen, main line with Nb316023.1%49.7%
B20Sicilian, wing gambit8023.8%45.6%
B50Sicilian, wing gambit deferred3619.4%45.8%
B20Sicilian, wing gambit, Carlsbad variation2416.7%58.3%
B20Sicilian, wing gambit, Marshall variation36726.4%40.7%
B20Sicilian, wing gambit, Santasiere variation250.0%75.0%
B00St. George (Baker) defence18721.9%53.7%
C00St. George defence62026.1%55.5%
C44Tayler opening728.6%28.6%
A06Tennison (Lemberg, Zukertort) gambit1717.6%61.8%
C46Three knights game25523.9%52.4%
C46Three knights, Schlechter variation1338.5%65.4%
C46Three knights, Steinitz variation15518.7%53.2%
C46Three knights, Steinitz, Rosenthal variation1361.5%61.5%
D03Torre attack (Tartakower variation)91623.3%50.6%
A45Trompovsky attack (Ruth, Opovcensky opening)681524.5%51.7%
C55Two knights defence14827.7%48.3%
C56Two knights defence7634.2%50.0%
C57Two knights defence5922.0%38.1%
C58Two knights defence20223.3%55.7%
C59Two knights defence17726.6%46.6%
C55Two knights defence (Modern bishop's opening)132029.5%56.5%
C58Two knights defence, Blackburne variation450.0%75.0%
C58Two knights defence, Bogolyubov variation6521.5%56.9%
C56Two knights defence, Canal variation2748.1%42.6%
C58Two knights defence, Colman variation90.0%77.8%
C57Two knights defence, Fegatello attack7436.5%46.6%
C57Two knights defence, Fegatello attack, Leonhardt variation30.0%0.0%
C57Two knights defence, Fegatello attack, Polerio defence10.0%0.0%
C57Two knights defence, Fritz variation616.7%58.3%
C57Two knights defence, Fritz, Gruber variation1735.3%52.9%
C59Two knights defence, Goering variation20.0%50.0%
C55Two knights defence, Keidanz variation1100.0%50.0%
C58Two knights defence, Kieseritsky variation3228.1%54.7%
C59Two knights defence, Knorre variation1100.0%50.0%
C57Two knights defence, Lolli attack1921.1%57.9%
C58Two knights defence, Paoli variation1118.2%81.8%
C55Two knights defence, Perreux variation3129.0%50.0%
C57Two knights defence, Pincus variation742.9%64.3%
C59Two knights defence, Steinitz variation16425.6%59.8%
C57Two knights defence, Ulvestad variation3321.2%56.1%
C57Two knights defence, Wilkes Barre (Traxler) variation7516.0%62.7%
C58Two knights defence, Yankovich variation540.0%40.0%
C55Two knights, Max Lange attack7723.4%46.8%
C55Two knights, Max Lange attack, Marshall variation450.0%50.0%
C55Two knights, Max Lange attack, Schlechter variation6930.4%47.1%
C55Two knights, Max Lange attack, Steinitz variation812.5%56.3%
A00Van't Kruijs opening126426.2%52.2%
C25Vienna gambit6325.4%52.4%
C29Vienna gambit21828.4%48.6%
C29Vienna gambit, Bardeleben variation1020.0%30.0%
C29Vienna gambit, Breyer variation12437.1%56.5%
C29Vienna gambit, Kaufmann variation1241.7%62.5%
C29Vienna gambit, Paulsen attack2326.1%52.2%
C29Vienna gambit, Steinitz variation3125.8%48.4%
C25Vienna game74025.5%52.0%
C26Vienna game32525.2%53.8%
C27Vienna game25225.8%49.0%
C28Vienna game34329.7%52.5%
C25Vienna game, Max Lange defence6923.2%44.9%
C27Vienna, Alekhine variation9022.2%43.3%
C26Vienna, Falkbeer variation14117.0%51.1%
C25Vienna, Hamppe-Allgaier gambit425.0%37.5%
C26Vienna, Mengarini variation3735.1%58.1%
C25Vienna, Paulsen variation56122.3%50.2%
C26Vienna, Paulsen-Mieses variation88630.4%50.6%
C25Vienna, Pierce gambit147.1%32.1%
C25Vienna, Steinitz gambit540.0%60.0%
C25Vienna, Steinitz gambit, Fraser-Minckwitz variation714.3%50.0%
C25Vienna, Steinitz gambit, Zukertort defence1100.0%50.0%
C27Vienna, `Frankenstein-Dracula' variation4226.2%56.0%
A56Vulture defence30.0%33.3%
A00Ware (Meadow Hay) opening20521.5%47.3%
A43Woozle defence3915.4%48.7%
B12de Bruycker defence2330.4%50.0%

Created in 2005-2013 by CCRL team
Last games added on November 16, 2017