CCRL 40/40
Downloads and Statistics
June 23, 2018
Testing summary:
Total: 851'868 games
played by 2'199 programs
119167 CPU days (X2 4600+)

White wins: 292'748 (34.4%)
Black wins: 216'649 (25.4%)
Draws: 342'471 (40.2%)
White score: 54.5%

Opening statistics

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

ECOOpeningNumber
of
games
DrawsWhite
score
Commented
PGN
A00Amar (Paris) opening1844.4%33.3%
A00Amar gambit10.0%0.0%
A00Amsterdam attack10.0%100.0%
A00Anderssen's opening41742.0%50.5%
A00Anti-Borg (Desprez) opening30.0%33.3%
A00Battambang opening1631.3%46.9%
A00Benko's opening689442.1%52.3%
A00Benko's opening, reversed Alekhine11542.6%48.3%
A00Clemenz (Mead's, Basman's or de Klerk's) opening4136.6%40.2%
A00Dunst (Sleipner, Heinrichsen) opening180635.9%49.2%
A00Durkin's attack837.5%31.3%
A00Global opening425.0%62.5%
A00Grob's attack18643.5%34.7%
A00Grob, Fritz gambit5143.1%27.5%
A00Grob, Romford counter-gambit425.0%62.5%
A00Grob, spike attack633.3%33.3%
A00Lasker simul special333.3%50.0%
A00Mieses opening16732.3%50.9%
A00Novosibirsk opening2133.3%50.0%
A00Polish (Sokolsky) opening182539.2%48.9%
A00Polish, Outflank variation14144.0%48.9%
A00Saragossa opening36230.4%50.6%
A00Van't Kruijs opening50740.8%51.2%
A00Ware (Meadow Hay) opening540.0%60.0%
A01Nimzovich-Larsen attack71336.7%53.4%
A01Nimzovich-Larsen attack, Dutch variation1526.7%46.7%
A01Nimzovich-Larsen attack, English variation26133.3%51.1%
A01Nimzovich-Larsen attack, Indian variation30934.6%48.7%
A01Nimzovich-Larsen attack, Polish variation425.0%62.5%
A01Nimzovich-Larsen attack, classical variation123935.8%49.4%
A01Nimzovich-Larsen attack, modern variation319540.2%50.8%
A01Nimzovich-Larsen attack, symmetrical variation70341.8%49.6%
A02Bird's opening317036.3%49.1%
A02Bird's opening, Swiss gambit250.0%75.0%
A02Bird, From gambit16336.2%50.6%
A02Bird, From gambit, Lasker variation2955.2%58.6%
A02Bird, From gambit, Lipke variation10.0%0.0%
A02Bird, Hobbs gambit560.0%70.0%
A03Bird's opening310435.9%47.7%
A03Bird's opening, Lasker variation11029.1%46.4%
A03Bird's opening, Williams gambit2937.9%63.8%
A03Mujannah opening450.0%25.0%
A04Reti opening783138.3%54.2%
A04Reti v Dutch106434.8%58.7%
A04Reti, Herrstroem gambit20.0%100.0%
A04Reti, Lisitsin gambit deferred2429.2%68.8%
A04Reti, Pirc-Lisitsin gambit12927.9%49.6%
A04Reti, Wade defence20.0%50.0%
A05Reti opening366437.1%53.4%
A05Reti, King's Indian attack122739.9%53.6%
A05Reti, King's Indian attack, Reti-Smyslov variation6137.7%54.9%
A05Reti, King's Indian attack, Spassky's variation35243.8%53.1%
A06Reti opening62937.4%53.0%
A06Reti, Nimzovich-Larsen attack340641.7%49.5%
A06Reti, old Indian attack10228.4%48.5%
A06Santasiere's folly12840.6%42.2%
A06Tennison (Lemberg, Zukertort) gambit2254.5%40.9%
A07Reti, King's Indian attack243041.5%52.9%
A07Reti, King's Indian attack (Barcza system)478041.3%53.5%
A07Reti, King's Indian attack (with ...c5)18942.9%48.4%
A07Reti, King's Indian attack, Keres variation72934.4%54.7%
A07Reti, King's Indian attack, Pachman system11937.0%52.9%
A07Reti, King's Indian attack, Yugoslav variation167640.0%53.0%
A08Reti, King's Indian attack55742.4%52.6%
A08Reti, King's Indian attack, French variation26437.1%48.9%
A09Reti accepted26939.4%53.2%
A09Reti accepted, Keres variation4231.0%67.9%
A09Reti opening64539.1%53.5%
A09Reti, advance variation91939.2%48.5%
A10English opening275638.0%54.8%
A10English, Adorjan defence48638.3%53.5%
A10English, Anglo-Dutch defense71233.7%52.4%
A10English, Jaenisch gambit20.0%100.0%
A11English, Caro-Kann defensive system137540.1%53.8%
A12English, Bled variation1741.2%61.8%
A12English, Capablanca's variation7634.2%47.4%
A12English, Caro-Kann defensive system22437.1%48.4%
A12English, Caro-Kann defensive system, Bogolyubov variation8646.5%53.5%
A12English, London defensive system12642.1%52.0%
A12English, New York (London) defensive system3452.9%44.1%
A12English, Torre defensive system4438.6%58.0%
A13English opening198736.7%52.1%
A13English opening, Agincourt variation132640.0%53.9%
A13English, Kurajica defence7834.6%57.1%
A13English, Neo-Catalan73840.9%53.1%
A13English, Neo-Catalan accepted113945.9%56.2%
A13English, Romanishin gambit26740.8%56.4%
A13English, Wimpey system12642.1%51.2%
A14English, Neo-Catalan declined81843.4%54.2%
A14English, Symmetrical, Keres defence52947.6%57.1%
A15English opening1138243.1%53.4%
A15English, 1...Nf6 (Anglo-Indian defense)116040.3%54.5%
A16English opening131735.7%53.5%
A16English, Anglo-Gruenfeld defense25442.5%53.5%
A16English, Anglo-Gruenfeld defense, Korchnoi variation8836.4%58.0%
A16English, Anglo-Gruenfeld, Czech defense17433.9%63.5%
A16English, Anglo-Gruenfeld, Smyslov defense15832.3%56.0%
A17English opening22138.5%52.7%
A17English, Nimzo-English opening183139.4%53.5%
A17English, Queens Indian formation24236.8%60.5%
A17English, Queens Indian, Romanishin variation6227.4%60.5%
A18English, Mikenas-Carls variation18737.4%57.8%
A18English, Mikenas-Carls, Flohr variation33940.1%58.7%
A18English, Mikenas-Carls, Kevitz variation2429.2%47.9%
A19English, Mikenas-Carls, Sicilian variation37441.7%54.5%
A20English opening570738.2%54.3%
A20English, Nimzovich variation7038.6%59.3%
A20English, Nimzovich, Flohr variation16436.6%46.3%
A21English opening150133.1%55.5%
A21English, Keres variation1225.0%45.8%
A21English, Kramnik-Shirov counterattack213640.4%52.3%
A21English, Smyslov defence3630.6%59.7%
A21English, Troeger defence13328.6%53.4%
A22English opening74137.5%51.0%
A22English, Bellon gambit1338.5%57.7%
A22English, Bremen, Smyslov system154139.0%48.8%
A22English, Bremen, reverse dragon66840.1%50.6%
A22English, Carls' Bremen system42740.0%54.0%
A23English, Bremen system, Keres variation62040.2%48.3%
A24English, Bremen system with ...g616639.8%48.2%
A25English, Sicilian reversed81734.6%52.8%
A25English, closed system75934.4%54.3%
A25English, closed system (without ...d6)11927.7%55.0%
A25English, closed, 5.Rb144840.4%52.8%
A25English, closed, 5.Rb1 Taimanov variation825.0%50.0%
A25English, closed, Hort variation3636.1%54.2%
A25English, closed, Taimanov variation2412.5%64.6%
A26English, Botvinnik system32937.1%52.3%
A26English, closed system31237.2%51.6%
A27English, three knights system64435.7%53.1%
A28English, Bradley Beach variation5221.2%37.5%
A28English, Nenarokov variation12040.0%51.7%
A28English, four knights system35943.7%51.4%
A28English, four knights, 4.e3100837.0%51.8%
A28English, four knights, Capablanca variation46636.3%54.0%
A28English, four knights, Marini variation83339.3%51.1%
A28English, four knights, Nimzovich variation55133.2%54.7%
A28English, four knights, Romanishin variation45550.1%52.3%
A28English, four knights, Stean variation8342.2%59.6%
A29English, four knights, kingside fianchetto617240.8%51.9%
A30English, symmetrical variation308839.7%54.8%
A30English, symmetrical, hedgehog system263546.8%55.7%
A30English, symmetrical, hedgehog, flexible formation17643.2%54.5%
A31English, symmetrical, Benoni formation99740.4%56.0%
A32English, symmetrical variation40543.2%57.9%
A33English, symmetrical variation156547.0%54.3%
A33English, symmetrical, Geller variation62838.5%53.8%
A34English, symmetrical variation105639.8%54.5%
A34English, symmetrical, Rubinstein system38738.2%52.5%
A34English, symmetrical, three knights system124043.3%54.4%
A35English, symmetrical variation23835.7%51.5%
A35English, symmetrical, four knights system210243.6%53.5%
A36English, symmetrical variation11735.9%53.8%
A36English, symmetrical, Botvinnik system15935.8%51.3%
A36English, symmetrical, Botvinnik system reversed8341.0%54.2%
A36English, ultra-symmetrical variation136138.1%52.7%
A37English, symmetrical variation99841.2%50.5%
A37English, symmetrical, Botvinnik system reversed75037.6%50.9%
A38English, symmetrical variation52945.0%55.2%
A38English, symmetrical, main line with b31100.0%50.0%
A38English, symmetrical, main line with d315446.8%53.2%
A39English, symmetrical, main line with d443541.4%57.0%
A40Beefeater defence3627.8%66.7%
A40Modern defence100837.2%57.3%
A40Polish defence6442.2%53.9%
A40Queen's pawn221737.0%55.1%
A40Queen's pawn, Charlick (Englund) gambit2642.3%59.6%
A40Queen's pawn, English defence20142.8%60.7%
A40Queen's pawn, Franco-Indian (Keres) defence114238.6%56.2%
A40Queen's pawn, Keres defence181843.7%56.0%
A40Queen's pawn, Lundin (Kevitz-Mikenas) defence16929.0%56.5%
A41Modern defence8531.8%58.2%
A41Old Indian defence85432.0%54.5%
A41Old Indian, Tartakower (Wade) variation101934.5%61.2%
A41Queen's Pawn200735.7%54.7%
A41Robatsch defence, Rossolimo variation14436.8%50.3%
A42Modern defence, Averbakh system43832.9%58.7%
A42Modern defence, Averbakh system, Kotov variation11924.4%66.0%
A42Modern defence, Averbakh system, Randspringer variation119.1%77.3%
A42Pterodactyl defence32036.9%63.8%
A43Hawk (Habichd) defence366.7%33.3%
A43Old Benoni defence155335.1%58.2%
A43Old Benoni, Franco-Benoni defence12339.8%58.9%
A43Old Benoni, Mujannah formation4139.0%65.9%
A43Old Benoni, Schmid's system2520.0%58.0%
A44Old Benoni defence2638.5%61.5%
A44Semi-Benoni (`blockade variation')14628.1%59.2%
A45Blackmar-Diemer gambit20128.4%51.0%
A45Canard opening1338.5%26.9%
A45Paleface attack3435.3%47.1%
A45Queen's pawn game240238.6%54.0%
A45Queen's pawn, Bronstein gambit1233.3%50.0%
A45Trompovsky attack (Ruth, Opovcensky opening)408835.9%52.5%
A46Queen's pawn game315840.6%54.7%
A46Queen's pawn, Torre attack138336.6%52.2%
A46Queen's pawn, Torre attack, Wagner gambit825.0%62.5%
A46Queen's pawn, Yusupov-Rubinstein system79640.8%52.8%
A47Queen's Indian defence52238.5%52.2%
A47Queen's Indian, Marienbad system8237.8%54.3%
A47Queen's Indian, Marienbad system, Berg variation1560.0%56.7%
A48King's Indian, East Indian defence86838.0%51.7%
A48King's Indian, London system112138.4%53.9%
A48King's Indian, Torre attack164439.2%49.6%
A49King's Indian, fianchetto without c4118839.7%57.0%
A50Kevitz-Trajkovich defence39435.8%56.0%
A50Queen's Indian accelerated20347.8%57.9%
A50Queen's pawn game65937.8%55.8%
A51Budapest defence declined933.3%72.2%
A51Budapest, Fajarowicz variation5933.9%62.7%
A51Budapest, Fajarowicz, Steiner variation560.0%50.0%
A52Budapest defence3836.8%52.6%
A52Budapest, Adler variation18144.8%53.3%
A52Budapest, Alekhine variation1625.0%68.8%
A52Budapest, Alekhine variation, Balogh gambit1100.0%50.0%
A52Budapest, Alekhine, Abonyi variation6229.0%62.9%
A52Budapest, Rubinstein variation37141.2%60.2%
A53Old Indian defence103439.2%56.8%
A53Old Indian, Janowski variation15034.0%55.7%
A54Old Indian, Dus-Khotimirsky variation1020.0%40.0%
A54Old Indian, Ukrainian variation12045.8%57.9%
A54Old Indian, Ukrainian variation, 4.Nf323236.6%57.5%
A55Old Indian, main line43038.1%58.4%
A56Benoni defence64533.3%59.9%
A56Benoni defence, Hromodka system40524.4%64.3%
A56Czech Benoni defence30926.9%67.5%
A56Czech Benoni, King's Indian system4916.3%67.3%
A56Vulture defence1100.0%50.0%
A57Benko gambit69335.9%56.2%
A57Benko gambit half accepted83039.4%58.1%
A57Benko gambit, Zaitsev system8341.0%47.0%
A58Benko gambit accepted71233.7%59.3%
A58Benko gambit, Nd2 variation1241.7%62.5%
A58Benko gambit, fianchetto variation15444.8%60.7%
A59Benko gambit4143.9%63.4%
A59Benko gambit, 7.e4850.0%50.0%
A59Benko gambit, Ne2 variation520.0%30.0%
A59Benko gambit, main line11841.5%66.5%
A60Benoni defence14425.0%62.5%
A61Benoni defence50332.2%62.0%
A61Benoni, Nimzovich (knight's tour) variation37128.0%58.5%
A61Benoni, Uhlmann variation19822.2%39.9%
A61Benoni, fianchetto variation1414.3%78.6%
A62Benoni, fianchetto variation80834.5%56.0%
A63Benoni, fianchetto, 9...Nbd78933.7%67.4%
A64Benoni, fianchetto, 11...Re813241.7%45.1%
A65Benoni, 6.e434128.4%56.5%
A66Benoni, Mikenas variation1921.1%52.6%
A66Benoni, pawn storm variation540.0%60.0%
A67Benoni, Taimanov variation23426.5%63.2%
A68Benoni, four pawns attack7932.9%58.2%
A69Benoni, four pawns attack, main line8338.6%47.0%
A70Benoni, classical with e4 and Nf359039.7%59.5%
A70Benoni, classical without 9.O-O1020.0%50.0%
A71Benoni, classical, 8.Bg59829.6%56.6%
A72Benoni, classical without 9.O-O6445.3%61.7%
A73Benoni, classical, 9.O-O5728.1%59.6%
A74Benoni, classical, 9...a6, 10.a42142.9%73.8%
A75Benoni, classical with ...a6 and 10...Bg45527.3%68.2%
A76Benoni, classical, 9...Re810041.0%63.5%
A77Benoni, classical, 9...Re8, 10.Nd213227.3%68.2%
A78Benoni, classical with ...Re8 and ...Na65038.0%61.0%
A79Benoni, classical, 11.f35831.0%60.3%
A80Dutch221035.2%54.8%
A80Dutch, 2.Bg5 variation102133.1%54.5%
A80Dutch, Korchnoi attack3426.5%54.4%
A80Dutch, Krejcik gambit26734.5%53.9%
A80Dutch, Manhattan (Alapin, Ulvestad) variation2339.1%58.7%
A81Dutch defence333137.8%56.6%
A81Dutch defence, Blackburne variation5431.5%52.8%
A81Dutch, Leningrad, Basman system666.7%66.7%
A81Dutch, Leningrad, Karlsbad variation650.0%58.3%
A82Dutch, Balogh defence1428.6%78.6%
A82Dutch, Staunton gambit11936.1%36.6%
A82Dutch, Staunton gambit, Tartakower variation616.7%41.7%
A83Dutch, Staunton gambit, Alekhine variation333.3%50.0%
A83Dutch, Staunton gambit, Chigorin variation7532.0%52.0%
A83Dutch, Staunton gambit, Lasker variation1546.7%43.3%
A83Dutch, Staunton gambit, Nimzovich variation20.0%0.0%
A83Dutch, Staunton gambit, Staunton's line14337.8%50.3%
A84Dutch defence58438.9%57.1%
A84Dutch defence, Rubinstein variation29835.6%58.4%
A84Dutch, Staunton gambit deferred955.6%27.8%
A85Dutch with c4 & Nc367835.5%54.6%
A86Dutch with c4 & g310738.3%64.0%
A86Dutch, Hort-Antoshin system475.0%62.5%
A86Dutch, Leningrad variation18133.7%58.3%
A87Dutch, Leningrad, main variation34440.1%55.2%
A88Dutch, Leningrad, main variation with c689139.5%58.0%
A89Dutch, Leningrad, main variation with Nc638136.0%63.6%
A90Dutch defence103139.1%60.9%
A90Dutch defence, Dutch-Indian (Nimzo-Dutch) variation21535.3%61.4%
A90Dutch-Indian, Alekhine variation5538.2%60.9%
A91Dutch defence10833.3%52.8%
A92Dutch defence7347.9%59.6%
A92Dutch defence, Alekhine variation3540.0%62.9%
A92Dutch, stonewall variation8447.6%58.3%
A92Dutch, stonewall with Nc32040.0%45.0%
A93Dutch, stonewall, Botwinnik variation12035.0%61.7%
A94Dutch, stonewall with Ba35350.9%57.5%
A95Dutch, stonewall with Nc323630.9%58.7%
A95Dutch, stonewall: Chekhover variation1100.0%50.0%
A96Dutch, classical variation24437.3%59.6%
A97Dutch, Ilyin-Genevsky variation5335.8%55.7%
A97Dutch, Ilyin-Genevsky, Winter variation8637.2%65.1%
A98Dutch, Ilyin-Genevsky variation with Qc26232.3%54.8%
A99Dutch, Ilyin-Genevsky variation with b313438.1%62.3%
B00Barnes defence250.0%75.0%
B00Carr's defence450.0%50.0%
B00Corn stalk defence250.0%25.0%
B00Fred20.0%100.0%
B00KP, Colorado counter425.0%62.5%
B00KP, Nimzovich defence55732.5%59.2%
B00KP, Nimzovich defence, Bogolyubov variation11629.3%60.3%
B00KP, Nimzovich defence, Marshall gambit20.0%50.0%
B00King's pawn opening154936.7%57.3%
B00Lemming defence837.5%56.3%
B00Owen defence30034.0%61.7%
B00Reversed Grob (Borg/Basman defence/macho Grob)2222.7%75.0%
B00St. George (Baker) defence4037.5%61.3%
B01Scandinavian (centre counter) defence260741.6%57.1%
B01Scandinavian defence104140.6%59.4%
B01Scandinavian defence, Gruenfeld variation40.0%75.0%
B01Scandinavian defence, Lasker variation11833.1%64.0%
B01Scandinavian gambit15541.9%53.2%
B01Scandinavian, Anderssen counter-attack orthodox attack10.0%100.0%
B01Scandinavian, Anderssen counter-attack, Collijn variation10.0%100.0%
B01Scandinavian, Icelandic gambit6043.3%55.0%
B01Scandinavian, Kiel variation728.6%85.7%
B01Scandinavian, Marshall variation56445.2%60.0%
B01Scandinavian, Mieses-Kotrvc gambit862.5%43.8%
B01Scandinavian, Pytel-Wade variation273043.8%58.2%
B01Scandinavian, Richter variation450.0%75.0%
B02Alekhine's defence59235.8%54.9%
B02Alekhine's defence, Brooklyn defence714.3%35.7%
B02Alekhine's defence, Kmoch variation1020.0%20.0%
B02Alekhine's defence, Krejcik variation425.0%12.5%
B02Alekhine's defence, Maroczy variation9035.6%57.8%
B02Alekhine's defence, Saemisch attack27138.0%49.6%
B02Alekhine's defence, Scandinavian variation24641.5%52.8%
B02Alekhine's defence, Spielmann variation1729.4%44.1%
B02Alekhine's defence, Steiner variation944.4%55.6%
B02Alekhine's defence, Two pawns' (Lasker's) attack30342.9%54.5%
B03Alekhine's defence10933.0%61.5%
B03Alekhine's defence, Balogh variation1833.3%61.1%
B03Alekhine's defence, exchange variation66339.7%57.8%
B03Alekhine's defence, exchange, Karpov variation955.6%50.0%
B03Alekhine's defence, four pawns attack24631.3%65.2%
B03Alekhine's defence, four pawns attack, 6...Nc61330.8%46.2%
B03Alekhine's defence, four pawns attack, 7.Be311736.8%67.9%
B03Alekhine's defence, four pawns attack, Ilyin-Genevsky var.742.9%21.4%
B03Alekhine's defence, four pawns attack, Planinc variation728.6%28.6%
B03Alekhine's defence, four pawns attack, Trifunovic variation6735.8%68.7%
B03Alekhine's defence, four pawns attack, fianchetto variation12032.5%59.6%
B04Alekhine's defence, modern variation25036.0%60.8%
B04Alekhine's defence, modern, Keres variation4734.0%72.3%
B04Alekhine's defence, modern, Larsen variation82542.7%60.1%
B04Alekhine's defence, modern, Schmid variation15038.7%60.7%
B04Alekhine's defence, modern, fianchetto variation70834.3%57.1%
B05Alekhine's defence, modern variation, 4...Bg462133.0%64.0%
B05Alekhine's defence, modern, Alekhine variation742.9%50.0%
B05Alekhine's defence, modern, Flohr variation14037.1%62.9%
B05Alekhine's defence, modern, Panov variation1526.7%60.0%
B05Alekhine's defence, modern, Vitolins attack1050.0%45.0%
B06Norwegian defence250.0%25.0%
B06Robatsch (modern) defence610936.2%56.3%
B06Robatsch defence71435.7%58.2%
B06Robatsch defence, Gurgenidze variation5837.9%62.1%
B06Robatsch defence, Pseudo-Austrian attack51334.1%54.7%
B06Robatsch defence, Two knights variation33633.9%60.4%
B06Robatsch defence, Two knights, Suttles variation101238.1%58.4%
B06Robatsch defence, three pawns attack15129.1%60.9%
B07Pirc defence175236.9%55.7%
B07Pirc, 150 attack24237.2%60.7%
B07Pirc, Byrne variation38632.6%57.0%
B07Pirc, Chinese variation250.0%25.0%
B07Pirc, Holmov system3847.4%60.5%
B07Pirc, Sveshnikov system30435.5%52.6%
B07Pirc, Ufimtsev-Pytel variation40339.2%59.3%
B07Pirc, bayonet (Mariotti) attack3154.8%56.5%
B07Robatsch defence, Geller's system60837.2%57.4%
B08Pirc, classical (two knights) system60137.3%58.6%
B08Pirc, classical system, 5.Be2235938.2%57.4%
B08Pirc, classical, h3 system41337.3%58.8%
B09Pirc, Austrian attack18340.4%61.2%
B09Pirc, Austrian attack, 6.Bd3115639.4%59.7%
B09Pirc, Austrian attack, 6.Be331131.8%58.4%
B09Pirc, Austrian attack, 6.e58744.8%56.9%
B09Pirc, Austrian attack, Ljubojevic variation1442.9%50.0%
B09Pirc, Austrian attack, dragon formation77838.8%58.4%
B10Caro-Kann defence224835.4%52.9%
B10Caro-Kann, Goldman (Spielmann) variation10039.0%50.5%
B10Caro-Kann, Hillbilly attack20.0%50.0%
B10Caro-Kann, Two knights variation38037.4%59.7%
B10Caro-Kann, anti-Caro-Kann defence56133.0%60.3%
B10Caro-Kann, anti-anti-Caro-Kann defence136447.7%51.8%
B10Caro-Kann, closed (Breyer) variation74438.4%52.7%
B11Caro-Kann, Two knights, 3...Bg490239.9%56.2%
B12Caro-Kann defence22435.3%53.8%
B12Caro-Kann, 3.Nd217239.5%61.0%
B12Caro-Kann, Edinburgh variation4146.3%57.3%
B12Caro-Kann, Tartakower (fantasy) variation67738.0%55.9%
B12Caro-Kann, advance variation1027738.0%56.2%
B12Caro-Kann, advance, Short variation4833.3%52.1%
B12Caro-Masi defence1100.0%50.0%
B12de Bruycker defence119.1%59.1%
B13Caro-Kann, Panov-Botvinnik attack103347.8%52.7%
B13Caro-Kann, Panov-Botvinnik, Czerniak variation3438.2%48.5%
B13Caro-Kann, Panov-Botvinnik, Gunderam attack1428.6%50.0%
B13Caro-Kann, Panov-Botvinnik, Herzog defence1631.3%53.1%
B13Caro-Kann, Panov-Botvinnik, Reifir (Spielmann) variation366.7%66.7%
B13Caro-Kann, Panov-Botvinnik, normal variation9652.1%57.3%
B13Caro-Kann, exchange variation84440.3%51.7%
B13Caro-Kann, exchange, Rubinstein variation13736.5%53.3%
B14Caro-Kann, Panov-Botvinnik attack, 5...e6183646.4%55.4%
B14Caro-Kann, Panov-Botvinnik attack, 5...g631850.0%53.3%
B15Caro-Kann defence22332.3%52.0%
B15Caro-Kann, Alekhine gambit2339.1%50.0%
B15Caro-Kann, Forgacs variation22441.5%55.6%
B15Caro-Kann, Gurgenidze counter-attack366.7%66.7%
B15Caro-Kann, Gurgenidze system32138.3%58.1%
B15Caro-Kann, Rasa-Studier gambit1216.7%33.3%
B15Caro-Kann, Tartakower (Nimzovich) variation34040.9%55.4%
B16Caro-Kann, Bronstein-Larsen variation48532.2%61.6%
B17Caro-Kann, Steinitz variation374943.2%53.6%
B18Caro-Kann, classical variation158544.5%54.3%
B18Caro-Kann, classical, 6.h456841.5%53.9%
B18Caro-Kann, classical, Flohr variation9254.3%50.0%
B18Caro-Kann, classical, Maroczy attack1216.7%41.7%
B19Caro-Kann, classical, 7...Nd738350.1%53.0%
B19Caro-Kann, classical, Spassky variation269239.7%56.6%
B20Sicilian defence217735.8%50.3%
B20Sicilian, Gloria variation40.0%50.0%
B20Sicilian, Keres variation (2.Ne2)64140.9%52.4%
B20Sicilian, Steinitz variation40942.8%50.2%
B20Sicilian, wing gambit5950.8%40.7%
B20Sicilian, wing gambit, Carlsbad variation1540.0%46.7%
B20Sicilian, wing gambit, Marienbad variation10.0%0.0%
B20Sicilian, wing gambit, Marshall variation6431.3%54.7%
B21Sicilian, Andreaschek gambit1442.9%57.1%
B21Sicilian, Grand Prix attack153835.6%52.4%
B21Sicilian, Smith-Morra gambit77441.7%47.5%
B22Sicilian, 2.c3, Heidenfeld variation5825.9%45.7%
B22Sicilian, Alapin's variation (2.c3)609043.5%54.7%
B23Sicilian, Grand Prix attack74536.6%50.0%
B23Sicilian, Grand Prix attack, Schofman variation15240.8%52.6%
B23Sicilian, chameleon variation62634.3%57.7%
B23Sicilian, closed321938.1%51.6%
B23Sicilian, closed, 2...Nc6180640.5%51.6%
B23Sicilian, closed, Korchnoi variation15248.7%52.0%
B24Sicilian, closed46236.1%50.8%
B24Sicilian, closed, Smyslov variation2133.3%54.8%
B25Sicilian, closed26937.5%49.3%
B25Sicilian, closed, 6.Ne2 e5 (Botvinnik)5131.4%51.0%
B25Sicilian, closed, 6.f443339.7%51.0%
B25Sicilian, closed, 6.f4 e5 (Botvinnik)2846.4%55.4%
B26Sicilian, closed, 6.Be360332.5%49.8%
B27Sicilian defence1833.3%55.6%
B27Sicilian, Hungarian variation340740.7%57.5%
B27Sicilian, Katalimov variation13644.1%61.0%
B27Sicilian, Quinteros variation4337.2%60.5%
B28Sicilian, O'Kelly variation40939.4%57.3%
B29Sicilian, Nimzovich-Rubinstein variation79042.2%59.1%
B29Sicilian, Nimzovich-Rubinstein; Rubinstein counter-gambit3253.1%48.4%
B30Sicilian defence269640.2%54.7%
B30Sicilian, Nimzovich-Rossolimo attack (without ...d6)455938.2%56.3%
B31Sicilian, Nimzovich-Rossolimo attack (with ...g6, without ...d6)289440.9%56.0%
B31Sicilian, Nimzovich-Rossolimo attack, Gurgenidze variation2556.0%56.0%
B32Sicilian defence84038.9%55.8%
B32Sicilian, Flohr variation23633.1%60.2%
B32Sicilian, Labourdonnais-Loewenthal (Kalashnikov) variation121740.0%56.5%
B32Sicilian, Labourdonnais-Loewenthal variation23540.9%59.1%
B32Sicilian, Nimzovich variation2339.1%54.3%
B33Sicilian defence45636.0%54.2%
B33Sicilian, Pelikan (Lasker/Sveshnikov) variation99735.5%55.0%
B33Sicilian, Pelikan, Bird variation23437.6%62.8%
B33Sicilian, Pelikan, Chelyabinsk variation211336.0%57.1%
B33Sicilian, Sveshnikov variation138838.5%50.8%
B34Sicilian, accelerated fianchetto, exchange variation1947.4%65.8%
B34Sicilian, accelerated fianchetto, modern variation35936.5%51.4%
B35Sicilian, accelerated fianchetto, modern variation with Bc4198343.3%53.5%
B36Sicilian, accelerated fianchetto, Gurgenidze variation27444.2%60.0%
B36Sicilian, accelerated fianchetto, Maroczy bind95144.9%58.0%
B37Sicilian, accelerated fianchetto, Maroczy bind, 5...Bg714646.6%55.5%
B37Sicilian, accelerated fianchetto, Simagin variation2100.0%50.0%
B38Sicilian, accelerated fianchetto, Maroczy bind, 6.Be3107843.9%57.7%
B39Sicilian, accelerated fianchetto, Breyer variation64140.7%58.3%
B40Sicilian defence519138.9%53.9%
B40Sicilian, Anderssen variation80340.2%57.3%
B40Sicilian, Marshall variation10.0%100.0%
B40Sicilian, Pin variation (Sicilian counter-attack)1931.6%73.7%
B40Sicilian, Pin, Koch variation4825.0%79.2%
B41Sicilian, Kan variation21341.8%55.6%
B41Sicilian, Kan, Maroczy bind (Reti variation)48035.6%58.0%
B41Sicilian, Kan, Maroczy bind - Bronstein variation2330.4%32.6%
B42Sicilian, Kan, 5.Bd3189437.8%58.2%
B42Sicilian, Kan, Gipslis variation8038.8%63.1%
B42Sicilian, Kan, Polugaievsky variation143336.4%54.2%
B42Sicilian, Kan, Swiss cheese variation26735.6%61.2%
B43Sicilian, Kan, 5.Nc3296338.7%56.4%
B44Sicilian defence31243.9%52.1%
B44Sicilian, Szen (`anti-Taimanov') variation82240.0%53.7%
B44Sicilian, Szen variation, Dely-Kasparov gambit2161.9%59.5%
B44Sicilian, Szen, hedgehog variation22839.5%50.9%
B45Sicilian, Taimanov variation195438.1%56.4%
B45Sicilian, Taimanov, American attack1942.1%42.1%
B46Sicilian, Taimanov variation314338.5%55.2%
B47Sicilian, Taimanov (Bastrikov) variation382441.2%54.2%
B48Sicilian, Taimanov variation329937.1%56.2%
B49Sicilian, Taimanov variation65644.2%58.1%
B50Sicilian398040.4%53.2%
B50Sicilian, wing gambit deferred2123.8%35.7%
B51Sicilian, Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack171138.1%55.5%
B52Sicilian, Canal-Sokolsky attack, 3...Bd7169242.8%50.0%
B52Sicilian, Canal-Sokolsky attack, Bronstein gambit20040.0%57.5%
B52Sicilian, Canal-Sokolsky attack, Sokolsky variation82243.7%55.5%
B53Sicilian, Chekhover variation128942.7%50.7%
B53Sicilian, Chekhover, Zaitsev variation6426.6%55.5%
B54Sicilian85037.6%55.3%
B54Sicilian, Prins (Moscow) variation45038.0%58.1%
B55Sicilian, Prins variation, Venice attack5246.2%51.9%
B56Sicilian162539.7%53.4%
B56Sicilian, Venice attack5536.4%65.5%
B57Sicilian, Magnus Smith trap1050.0%35.0%
B57Sicilian, Sozin, Benko variation129839.3%51.6%
B57Sicilian, Sozin, not Scheveningen24143.6%55.8%
B58Sicilian, Boleslavsky variation43536.8%48.0%
B58Sicilian, Boleslavsky, Louma variation4637.0%57.6%
B58Sicilian, classical21546.5%47.0%
B59Sicilian, Boleslavsky variation, 7.Nb313046.9%51.9%
B60Sicilian, Richter-Rauzer70335.7%58.5%
B60Sicilian, Richter-Rauzer, Bondarevsky variation3354.5%60.6%
B60Sicilian, Richter-Rauzer, Larsen variation15430.5%59.4%
B61Sicilian, Richter-Rauzer, Larsen variation, 7.Qd242438.9%61.2%
B62Sicilian, Richter-Rauzer, 6...e64639.1%58.7%
B62Sicilian, Richter-Rauzer, Keres variation7634.2%50.0%
B62Sicilian, Richter-Rauzer, Margate (Alekhine) variation6038.3%50.8%
B62Sicilian, Richter-Rauzer, Podvebrady variation1850.0%36.1%
B62Sicilian, Richter-Rauzer, Richter attack10.0%100.0%
B63Sicilian, Richter-Rauzer, Rauzer attack14936.9%57.4%
B63Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7111937.7%55.9%
B64Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9.f426739.3%54.1%
B64Sicilian, Richter-Rauzer, Rauzer attack, Geller variation1136.4%63.6%
B65Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9...Nxd455340.5%55.7%
B66Sicilian, Richter-Rauzer, Rauzer attack, 7...a6569333.6%51.5%
B67Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 8...Bd7279333.2%55.5%
B68Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 9...Be710729.9%57.0%
B69Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 11.Bxf68132.1%60.5%
B70Sicilian, dragon variation72741.8%51.6%
B71Sicilian, dragon, Levenfish variation7834.6%55.8%
B71Sicilian, dragon, Levenfish; Flohr variation1040.0%60.0%
B72Sicilian, dragon, 6.Be310036.0%54.0%
B72Sicilian, dragon, classical attack9938.4%52.5%
B72Sicilian, dragon, classical, Amsterdam variation4425.0%46.6%
B72Sicilian, dragon, classical, Grigoriev variation3844.7%46.1%
B72Sicilian, dragon, classical, Nottingham variation2245.5%54.5%
B73Sicilian, dragon, classical, 8.O-O36746.0%52.2%
B73Sicilian, dragon, classical, Richter variation11145.9%57.2%
B73Sicilian, dragon, classical, Zollner gambit944.4%44.4%
B74Sicilian, dragon, classical, 9.Nb337252.7%48.1%
B74Sicilian, dragon, classical, Alekhine variation2347.8%67.4%
B74Sicilian, dragon, classical, Reti-Tartakower variation8547.1%55.3%
B74Sicilian, dragon, classical, Spielmann variation837.5%56.3%
B75Sicilian, dragon, Yugoslav attack32531.1%57.7%
B76Sicilian, dragon, Yugoslav attack, 7...O-O32534.5%52.9%
B76Sicilian, dragon, Yugoslav attack, Rauser variation92633.4%64.6%
B77Sicilian, dragon, Yugoslav attack, 9...Bd720341.9%55.4%
B77Sicilian, dragon, Yugoslav attack, 9.Bc410833.3%50.9%
B77Sicilian, dragon, Yugoslav attack, Byrne variation475.0%62.5%
B78Sicilian, dragon, Yugoslav attack, 10.O-O-O38428.6%56.0%
B79Sicilian, dragon, Yugoslav attack, 12.h41030.0%65.0%
B80Sicilian, Scheveningen variation124130.9%54.1%
B80Sicilian, Scheveningen, English variation14732.0%53.4%
B80Sicilian, Scheveningen, Vitolins variation4949.0%51.0%
B80Sicilian, Scheveningen, fianchetto variation19634.2%51.3%
B81Sicilian, Scheveningen, Keres attack222034.5%59.6%
B82Sicilian, Scheveningen, 6.f450732.7%57.4%
B82Sicilian, Scheveningen, Tal variation11735.9%62.4%
B83Sicilian, Scheveningen, 6.Be254340.0%52.8%
B83Sicilian, modern Scheveningen43841.6%49.1%
B83Sicilian, modern Scheveningen, main line52344.2%53.1%
B83Sicilian, modern Scheveningen, main line with Nb39036.7%56.1%
B84Sicilian, Scheveningen (Paulsen), classical variation367738.7%52.1%
B84Sicilian, Scheveningen, classical, Nd7 system8235.4%50.6%
B85Sicilian, Scheveningen, classical13441.0%51.9%
B85Sicilian, Scheveningen, classical main line35446.0%55.5%
B85Sicilian, Scheveningen, classical variation with ...Qc7 and ...Nc6366.7%66.7%
B85Sicilian, Scheveningen, classical, Maroczy system2634.6%55.8%
B86Sicilian, Sozin attack19142.9%52.9%
B87Sicilian, Sozin with ...a6 and ...b577436.6%51.1%
B88Sicilian, Sozin, Fischer variation1650.0%50.0%
B88Sicilian, Sozin, Leonhardt variation58740.2%54.5%
B89Sicilian, Sozin, 7.Be3103437.2%50.6%
B89Sicilian, Velimirovic attack74533.8%51.5%
B90Sicilian, Najdorf276136.1%53.9%
B90Sicilian, Najdorf, Adams attack122438.1%52.4%
B90Sicilian, Najdorf, Byrne (English) attack1951335.3%53.1%
B90Sicilian, Najdorf, Lipnitzky attack97535.9%49.6%
B91Sicilian, Najdorf, Zagreb (fianchetto) variation73837.9%53.7%
B92Sicilian, Najdorf, Opovcensky variation512239.9%53.3%
B93Sicilian, Najdorf, 6.f4158739.6%50.7%
B94Sicilian, Najdorf, 6.Bg579935.3%52.9%
B95Sicilian, Najdorf, 6...e6108538.8%49.3%
B96Sicilian, Najdorf, 7.f4135734.7%51.5%
B96Sicilian, Najdorf, Polugayevsky variation9938.4%52.5%
B96Sicilian, Najdorf, Polugayevsky, Simagin variation3122.6%56.5%
B97Sicilian, Najdorf, 7...Qb6158933.3%46.5%
B97Sicilian, Najdorf, Poisoned pawn variation110145.0%49.7%
B98Sicilian, Najdorf variation33230.1%57.5%
B98Sicilian, Najdorf, 7...Be712632.5%54.4%
B98Sicilian, Najdorf, Browne variation4327.9%60.5%
B98Sicilian, Najdorf, Goteborg (Argentine) variation2250.0%47.7%
B99Sicilian, Najdorf, 7...Be7 main line61128.6%53.1%
C00French defence59134.9%57.2%
C00French defence, Steiner variation76843.2%51.4%
C00French, Alapin variation650.0%75.0%
C00French, Chigorin variation87332.5%49.9%
C00French, King's Indian attack220737.3%51.5%
C00French, Labourdonnais variation23031.3%45.2%
C00French, Pelikan variation6636.4%53.0%
C00French, Reti (Spielmann) variation17839.3%50.6%
C00French, Reversed Philidor formation1233.3%58.3%
C00French, Schlechter variation17842.1%49.2%
C00French, Steinitz attack911.1%27.8%
C00French, Two knights variation24738.1%51.8%
C00French, Wing gambit4242.9%59.5%
C00Lengfellner system922.2%77.8%
C00St. George defence12649.2%63.5%
C01French, exchange variation147944.7%53.4%
C01French, exchange, Bogolyubov variation333.3%50.0%
C01French, exchange, Svenonius variation3938.5%57.7%
C02French, advance variation121532.4%56.0%
C02French, advance, Euwe variation135336.0%54.1%
C02French, advance, Milner-Barry gambit10034.0%47.0%
C02French, advance, Nimzovich system9831.6%45.4%
C02French, advance, Nimzovich variation1136.4%45.5%
C02French, advance, Paulsen attack178433.6%54.7%
C02French, advance, Steinitz variation38434.1%54.6%
C02French, advance, Wade variation34339.4%57.3%
C03French, Tarrasch221144.3%56.8%
C03French, Tarrasch, Guimard variation7230.6%65.3%
C04French, Tarrasch, Guimard main line35030.0%59.6%
C05French, Tarrasch, Botvinnik variation5733.3%64.0%
C05French, Tarrasch, closed variation113331.5%60.4%
C06French, Tarrasch, Leningrad variation1717.6%85.3%
C06French, Tarrasch, closed variation, main line100637.5%59.8%
C07French, Tarrasch, Eliskases variation12846.1%53.5%
C07French, Tarrasch, open variation362747.6%53.6%
C08French, Tarrasch, open, 4.ed ed129749.8%54.5%
C09French, Tarrasch, open variation, main line108549.6%56.8%
C10French, Fort Knox variation60340.1%57.2%
C10French, Frere (Becker) variation2540.0%60.0%
C10French, Marshall variation250.0%25.0%
C10French, Paulsen variation70733.0%59.1%
C10French, Rubinstein variation228348.4%55.3%
C10French, Rubinstein, Capablanca line771.4%50.0%
C11French defence16239.5%56.2%
C11French, Burn variation516044.1%53.0%
C11French, Henneberger variation1338.5%50.0%
C11French, Steinitz variation101138.1%54.6%
C11French, Steinitz, Boleslavsky variation343535.5%57.3%
C11French, Steinitz, Bradford attack1100.0%50.0%
C11French, Steinitz, Gledhill attack11833.1%54.7%
C11French, Swiss variation4650.0%55.4%
C12French, MacCutcheon variation12540.8%49.2%
C12French, MacCutcheon, Bernstein variation2123.8%59.5%
C12French, MacCutcheon, Bogolyubov variation1100.0%50.0%
C12French, MacCutcheon, Chigorin variation6338.1%47.6%
C12French, MacCutcheon, Dr. Olland (Dutch) variation8433.3%60.7%
C12French, MacCutcheon, Duras variation425.0%62.5%
C12French, MacCutcheon, Grigoriev variation2650.0%55.8%
C12French, MacCutcheon, Janowski variation13937.4%57.6%
C12French, MacCutcheon, Lasker variation20527.8%59.3%
C12French, MacCutcheon, Lasker variation, 8...g638235.6%59.2%
C12French, MacCutcheon, Tartakower variation20.0%100.0%
C12French, MacCutcheon, advance variation1526.7%20.0%
C13French, Albin-Alekhine-Chatard attack27530.2%55.1%
C13French, Albin-Alekhine-Chatard attack, Breyer variation8638.4%63.4%
C13French, Albin-Alekhine-Chatard attack, Maroczy variation1625.0%68.8%
C13French, Albin-Alekhine-Chatard attack, Spielmann variation6139.3%67.2%
C13French, Albin-Alekhine-Chatard attack, Teichmann variation250.0%75.0%
C13French, classical2842.9%42.9%
C13French, classical, Anderssen variation1330.8%38.5%
C13French, classical, Anderssen-Richter variation1030.0%55.0%
C13French, classical, Frankfurt variation837.5%81.3%
C13French, classical, Tartakower variation2437.5%47.9%
C13French, classical, Vistaneckis (Nimzovich) variation90.0%66.7%
C14French, classical variation616.7%41.7%
C14French, classical, Alapin variation9245.7%55.4%
C14French, classical, Pollock variation1136.4%45.5%
C14French, classical, Rubinstein variation3735.1%58.1%
C14French, classical, Stahlberg variation650.0%58.3%
C14French, classical, Steinitz variation74335.4%58.1%
C14French, classical, Tarrasch variation1216.7%50.0%
C15French, Winawer (Nimzovich) variation79742.4%55.5%
C15French, Winawer, Alekhine (Maroczy) gambit18738.5%55.1%
C15French, Winawer, Alekhine gambit425.0%37.5%
C15French, Winawer, Alekhine gambit, Kan variation5046.0%47.0%
C15French, Winawer, Kondratiyev variation1100.0%50.0%
C15French, Winawer, fingerslip variation3438.2%33.8%
C16French, Winawer, Petrosian variation21232.1%56.1%
C16French, Winawer, advance variation81234.4%57.5%
C17French, Winawer, advance variation5641.1%59.8%
C17French, Winawer, advance, 5.a339032.8%63.3%
C17French, Winawer, advance, Bogolyubov variation35939.8%51.1%
C17French, Winawer, advance, Rauzer variation1421.4%67.9%
C17French, Winawer, advance, Russian variation5538.2%53.6%
C18French, Winawer, advance variation48726.1%63.1%
C18French, Winawer, classical variation33533.1%58.1%
C19French, Winawer, advance, 6...Ne735536.6%57.5%
C19French, Winawer, advance, Smyslov variation15525.8%61.3%
C19French, Winawer, advance, poisoned pawn variation257833.4%61.1%
C19French, Winawer, advance, poisoned pawn, Euwe-Gligoric variation30.0%33.3%
C19French, Winawer, advance, poisoned pawn, Konstantinopolsky variation67231.1%62.4%
C19French, Winawer, advance, positional main line105931.0%57.6%
C20Alapin's opening2128.6%61.9%
C20KP, Indian opening6637.9%44.7%
C20KP, King's head opening250.0%25.0%
C20KP, Lopez opening1442.9%35.7%
C20KP, Mengarini's opening2040.0%25.0%
C20KP, Napoleon's opening633.3%50.0%
C20KP, Patzer opening3627.8%33.3%
C20King's pawn game2634.6%48.1%
C21Centre game16444.5%57.6%
C21Danish gambit12740.9%48.8%
C21Danish gambit, Collijn defence475.0%37.5%
C21Danish gambit, Schlechter defence714.3%50.0%
C21Danish gambit, Soerensen defence3959.0%57.7%
C21Halasz gambit825.0%37.5%
C22Centre game40537.5%46.2%
C22Centre game, Berger variation36437.9%53.8%
C22Centre game, Charousek variation650.0%58.3%
C22Centre game, Hall variation1752.9%38.2%
C22Centre game, Paulsen attack21538.1%50.7%
C23Bishop's opening17936.9%54.2%
C23Bishop's opening, Calabrese counter-gambit, Jaenisch variation30.0%100.0%
C23Bishop's opening, Classical variation5639.3%53.6%
C23Bishop's opening, Lisitsyn variation10.0%0.0%
C23Bishop's opening, Lopez gambit20.0%0.0%
C23Bishop's opening, MacDonnell double gambit250.0%25.0%
C23Bishop's opening, Philidor counter-attack15756.1%48.4%
C23Bishop's opening, Philidor variation944.4%55.6%
C23Bishop's opening, Wing gambit250.0%75.0%
C24Bishop's opening, Berlin defence111040.6%53.1%
C24Bishop's opening, Ponziani gambit1323.1%26.9%
C24Bishop's opening, Urusov gambit5431.5%36.1%
C25Vienna gambit4630.4%56.5%
C25Vienna game27437.2%59.5%
C25Vienna game, Max Lange defence2343.5%52.2%
C25Vienna, Paulsen variation9232.6%58.7%
C25Vienna, Pierce gambit1145.5%59.1%
C25Vienna, Steinitz gambit250.0%25.0%
C25Vienna, Steinitz gambit, Fraser-Minckwitz variation10.0%100.0%
C26Vienna game28743.9%54.0%
C26Vienna, Falkbeer variation5945.8%58.5%
C26Vienna, Mengarini variation1266.7%41.7%
C26Vienna, Paulsen-Mieses variation53341.3%52.5%
C27Boden-Kieseritsky gambit4032.5%31.3%
C27Boden-Kieseritsky gambit, Lichtenhein defence560.0%30.0%
C27Vienna game12944.2%54.7%
C27Vienna, Alekhine variation1442.9%50.0%
C27Vienna, `Frankenstein-Dracula' variation20.0%100.0%
C28Vienna game37442.2%53.2%
C29Vienna gambit21239.6%45.8%
C29Vienna gambit, Bardeleben variation742.9%35.7%
C29Vienna gambit, Breyer variation10233.3%52.9%
C29Vienna gambit, Kaufmann variation837.5%68.8%
C29Vienna gambit, Paulsen attack1154.5%54.5%
C29Vienna gambit, Steinitz variation633.3%33.3%
C29Vienna gambit, Wurzburger trap20.0%100.0%
C30KGD, 2...Nf63426.5%66.2%
C30KGD, Keene's defence2142.9%69.0%
C30KGD, Mafia defence837.5%68.8%
C30KGD, Norwalde variation2015.0%77.5%
C30KGD, classical counter-gambit10.0%0.0%
C30KGD, classical variation7929.1%52.5%
C30KGD, classical, 4.c36532.3%65.4%
C30KGD, classical, Heath variation20.0%50.0%
C30KGD, classical, Marshall attack5100.0%50.0%
C30KGD, classical, Reti variation1100.0%50.0%
C30KGD, classical, Soldatenkov variation10.0%0.0%
C30KGD, classical, Svenonius variation1100.0%50.0%
C30King's gambit12142.1%60.7%
C31KGD, Falkbeer counter-gambit5848.3%53.4%
C31KGD, Falkbeer, 3...e4862.5%56.3%
C31KGD, Falkbeer, 4.d32055.0%62.5%
C31KGD, Falkbeer, Milner-Barry variation20.0%50.0%
C31KGD, Falkbeer, Morphy gambit10.0%100.0%
C31KGD, Falkbeer, Nimzovich variation560.0%70.0%
C31KGD, Falkbeer, Rubinstein variation520.0%70.0%
C31KGD, Falkbeer, Tartakower variation1656.3%40.6%
C31KGD, Nimzovich counter-gambit6334.9%50.8%
C32KGD, Falkbeer, 5.de1338.5%34.6%
C32KGD, Falkbeer, Charousek gambit2100.0%50.0%
C32KGD, Falkbeer, Keres variation333.3%83.3%
C32KGD, Falkbeer, Reti variation450.0%50.0%
C32KGD, Falkbeer, main line, 7...Bf5714.3%92.9%
C33KGA, Breyer gambit333.3%50.0%
C33KGA, Carrera (Basman) gambit10.0%100.0%
C33KGA, Keres (Mason-Steinitz) gambit1656.3%34.4%
C33KGA, Lesser bishop's (Petroff-Jaenisch-Tartakower) gambit333.3%50.0%
C33KGA, bishop's gambit9034.4%52.8%
C33KGA, bishop's gambit, Anderssen variation450.0%50.0%
C33KGA, bishop's gambit, Bledow variation5226.9%30.8%
C33KGA, bishop's gambit, Boden defence450.0%25.0%
C33KGA, bishop's gambit, Bogolyubov variation2437.5%43.8%
C33KGA, bishop's gambit, Cozio (Morphy) defence922.2%44.4%
C33KGA, bishop's gambit, Gifford variation333.3%50.0%
C33KGA, bishop's gambit, Jaenisch variation11341.6%48.2%
C33KGA, bishop's gambit, Lopez-Gianutio counter-gambit425.0%62.5%
C33KGA, bishop's gambit, Maurian defence1931.6%52.6%
C33KGA, bishop's gambit, Morphy variation2536.0%54.0%
C33KGA, bishop's gambit, Paulsen attack666.7%50.0%
C33KGA, bishop's gambit, Ruy Lopez defence1650.0%50.0%
C33KGA, bishop's gambit, Steinitz defence2944.8%50.0%
C33KGA, bishop's gambit, classical defence30.0%33.3%
C33King's gambit accepted333.3%16.7%
C34KGA, Becker defence3342.4%45.5%
C34KGA, Bonsch-Osmolovsky variation4045.0%55.0%
C34KGA, Fischer defence14230.3%46.1%
C34KGA, Gianutio counter-gambit2100.0%50.0%
C34KGA, Schallop defence3933.3%62.8%
C34King's knight's gambit1729.4%32.4%
C35KGA, Cunningham defence6835.3%50.0%
C35KGA, Cunningham, Euwe defence2227.3%54.5%
C36KGA, Abbazia defence (classical defence, modern defence[!])5238.5%67.3%
C36KGA, Abbazia defence, modern variation27342.1%44.5%
C37KGA, Blachly gambit2835.7%28.6%
C37KGA, Cochrane gambit333.3%50.0%
C37KGA, King's knight's gambit1861.1%63.9%
C37KGA, Muzio gambit944.4%33.3%
C37KGA, Muzio gambit, Brentano defence425.0%62.5%
C37KGA, Muzio gambit, From defence1100.0%50.0%
C37KGA, Quaade gambit933.3%27.8%
C37KGA, Rosentreter gambit1250.0%33.3%
C37KGA, Salvio gambit250.0%75.0%
C37KGA, Salvio gambit, Anderssen counter-attack50.0%60.0%
C37KGA, Silberschmidt gambit333.3%50.0%
C38KGA, Hanstein gambit837.5%43.8%
C38KGA, Philidor gambit1612.5%31.3%
C38King's knight's gambit2339.1%28.3%
C39KGA, Allgaier, Thorold variation10.0%0.0%
C39KGA, Allgaier, Walker attack10.0%0.0%
C39KGA, Kieseritsky, Berlin defence6237.1%42.7%
C39KGA, Kieseritsky, Berlin defence, 6.Bc44334.9%36.0%
C39KGA, Kieseritsky, Brentano (Campbell) defence10.0%100.0%
C39KGA, Kieseritsky, Brentano defence10.0%100.0%
C39KGA, Kieseritsky, Brentano defence, Caro variation2100.0%50.0%
C39KGA, Kieseritsky, Kolisch defence8145.7%45.1%
C39KGA, Kieseritsky, Neumann defence1353.8%65.4%
C39KGA, Kieseritsky, Paulsen defence825.0%37.5%
C39KGA, Kieseritsky, Rice gambit1723.5%29.4%
C39KGA, Kieseritsky, Salvio (Rosenthal) defence5547.3%38.2%
C39KGA, Kieseritsky, long whip (Stockwhip, classical) defence633.3%33.3%
C40Greco defence1030.0%45.0%
C40Gunderam defence7929.1%67.7%
C40King's knight opening20.0%50.0%
C40Latvian counter-gambit8631.4%61.0%
C40Latvian gambit, 3.Bc4966.7%44.4%
C40Latvian, Fraser defence1118.2%54.5%
C40Latvian, Polerio variation2227.3%40.9%
C40QP counter-gambit (elephant gambit)1560.0%63.3%
C40QP counter-gambit, Maroczy gambit366.7%66.7%
C41Philidor's defence26936.8%60.4%
C41Philidor, Hanham variation4134.1%61.0%
C41Philidor, Hanham, Delmar variation450.0%75.0%
C41Philidor, Hanham, Krause variation1457.1%42.9%
C41Philidor, Hanham, Schlechter variation2128.6%71.4%
C41Philidor, Hanham, Steiner variation2138.1%66.7%
C41Philidor, Improved Hanham variation102538.4%57.2%
C41Philidor, Larsen variation3622.2%69.4%
C41Philidor, Lopez counter-gambit20.0%50.0%
C41Philidor, Nimzovich (Jaenisch) variation2040.0%45.0%
C41Philidor, Nimzovich variation4946.9%56.1%
C41Philidor, Nimzovich, Klein variation785.7%57.1%
C41Philidor, Nimzovich, Larobok variation5947.5%33.9%
C41Philidor, Nimzovich, Rellstab variation3641.7%65.3%
C41Philidor, Nimzovich, Sokolsky variation862.5%68.8%
C41Philidor, Nimzovich, Sozin variation742.9%50.0%
C41Philidor, Paulsen attack250.0%25.0%
C41Philidor, Philidor counter-gambit1421.4%67.9%
C41Philidor, Philidor counter-gambit, Zukertort variation862.5%68.8%
C41Philidor, Philidor counter-gambit, del Rio attack30.0%66.7%
C41Philidor, Steinitz variation20.0%0.0%
C41Philidor, exchange variation75737.9%58.9%
C42Petrov three knights game26538.1%57.2%
C42Petrov's defence28643.0%53.3%
C42Petrov, Cochrane gambit6518.5%32.3%
C42Petrov, Cozio (Lasker) attack50548.7%52.7%
C42Petrov, Damiano variation2441.7%50.0%
C42Petrov, French attack966.7%66.7%
C42Petrov, Italian variation6327.0%50.0%
C42Petrov, Kaufmann attack19948.7%50.5%
C42Petrov, Nimzovich attack115645.2%55.2%
C42Petrov, Paulsen attack15740.8%52.2%
C42Petrov, classical attack79047.3%56.8%
C42Petrov, classical attack, Berger variation1275.0%54.2%
C42Petrov, classical attack, Chigorin variation57740.9%57.0%
C42Petrov, classical attack, Jaenisch variation166445.6%58.3%
C42Petrov, classical attack, Krause variation944.4%33.3%
C42Petrov, classical attack, Marshall variation96943.6%57.1%
C42Petrov, classical attack, Mason variation11842.4%57.6%
C42Petrov, classical attack, Tarrasch variation250.0%75.0%
C42Petrov, classical attack, close variation14246.5%59.2%
C43Petrov, Urusov gambit633.3%83.3%
C43Petrov, modern (Steinitz) attack3545.7%60.0%
C43Petrov, modern attack, Bardeleben variation425.0%62.5%
C43Petrov, modern attack, Steinitz variation1100.0%50.0%
C43Petrov, modern attack, Symmetrical variation245445.0%53.3%
C43Petrov, modern attack, Trifunovic variation5545.5%48.2%
C43Petrov, modern attack, main line20047.0%58.5%
C44Dresden opening40.0%25.0%
C44Inverted Hanham3030.0%45.0%
C44Inverted Hungarian2245.5%59.1%
C44King's pawn game8537.6%51.8%
C44Konstantinopolsky opening1250.0%58.3%
C44Ponziani counter-gambit10843.5%57.9%
C44Ponziani counter-gambit, Cordel variation10.0%0.0%
C44Ponziani opening32233.9%45.2%
C44Ponziani, Caro variation22744.9%49.3%
C44Ponziani, Fraser defence5639.3%66.1%
C44Ponziani, Jaenisch counter-attack213145.8%52.7%
C44Ponziani, Leonhardt variation10035.0%48.5%
C44Ponziani, Reti variation2832.1%58.9%
C44Ponziani, Romanishin variation1631.3%46.9%
C44Ponziani, Steinitz variation47141.6%45.9%
C44Scotch gambit5236.5%62.5%
C44Scotch gambit, Anderssen (Paulsen, Suhle) counter-attack666.7%33.3%
C44Scotch gambit, Benima defence5335.8%55.7%
C44Scotch gambit, Dubois-Reti defence30041.7%51.5%
C44Scotch gambit, Hanneken variation10.0%100.0%
C44Scotch opening475.0%37.5%
C44Scotch, Goering gambit19044.7%57.1%
C44Scotch, Goering gambit, Bardeleben variation1050.0%45.0%
C44Scotch, Lolli variation1637.5%56.3%
C44Scotch, Relfsson gambit ('MacLopez')666.7%66.7%
C45Scotch game243642.8%53.6%
C45Scotch, Blackburne attack1741.2%50.0%
C45Scotch, Blumenfeld attack1637.5%31.3%
C45Scotch, Ghulam Kassim variation4100.0%50.0%
C45Scotch, Horwitz attack2536.0%66.0%
C45Scotch, Meitner variation3554.3%55.7%
C45Scotch, Mieses variation139341.2%54.2%
C45Scotch, Paulsen attack333.3%83.3%
C45Scotch, Potter variation52939.7%51.6%
C45Scotch, Pulling counter-attack520.0%70.0%
C45Scotch, Romanishin variation5743.9%60.5%
C45Scotch, Schmidt variation66349.6%46.7%
C45Scotch, Steinitz variation4233.3%54.8%
C45Scotch, Tartakower variation1637.5%43.8%
C46Four knights game61944.1%50.2%
C46Four knights, Gunsberg variation9946.5%50.5%
C46Four knights, Italian variation17642.0%47.2%
C46Four knights, Schultze-Mueller gambit30.0%33.3%
C46Three knights game14738.1%54.4%
C46Three knights, Schlechter variation2035.0%52.5%
C46Three knights, Steinitz variation6041.7%54.2%
C46Three knights, Steinitz, Rosenthal variation742.9%35.7%
C46Three knights, Winawer defence (Gothic defence)10.0%100.0%
C47Four knights, Belgrade gambit10946.8%54.6%
C47Four knights, Scotch variation1520.0%56.7%
C47Four knights, Scotch, 4...exd447649.2%53.8%
C47Four knights, Scotch, Krause variation3537.1%64.3%
C48Four knights, Bardeleben variation850.0%50.0%
C48Four knights, Marshall variation616.7%41.7%
C48Four knights, Ranken variation1952.6%63.2%
C48Four knights, Rubinstein counter-gambit107339.6%52.5%
C48Four knights, Rubinstein counter-gambit, 5.Be22100.0%50.0%
C48Four knights, Rubinstein counter-gambit, Bogolyubov variation1752.9%44.1%
C48Four knights, Rubinstein counter-gambit, Henneberger variation6543.1%52.3%
C48Four knights, Rubinstein counter-gambit, exchange variation14965.8%52.3%
C48Four knights, Spanish variation24651.2%56.5%
C48Four knights, Spanish, classical defence18645.2%50.0%
C48Four knights, Spielmann variation475.0%37.5%
C49Four knights6852.9%48.5%
C49Four knights, Gunsberg counter-attack1100.0%50.0%
C49Four knights, Janowski variation1540.0%60.0%
C49Four knights, Nimzovich (Paulsen) variation5457.4%58.3%
C49Four knights, Svenonius variation366.7%66.7%
C49Four knights, double Ruy Lopez8846.6%61.9%
C49Four knights, symmetrical variation19742.6%55.3%
C49Four knights, symmetrical, Blake variation475.0%62.5%
C49Four knights, symmetrical, Capablanca variation2259.1%61.4%
C49Four knights, symmetrical, Maroczy system5745.6%50.9%
C49Four knights, symmetrical, Metger unpin33336.0%51.1%
C49Four knights, symmetrical, Pillsbury variation4856.3%44.8%
C49Four knights, symmetrical, Tarrasch variation1650.0%50.0%
C50Giuoco Pianissimo176338.3%53.2%
C50Giuoco Pianissimo, Canal variation18843.1%52.9%
C50Giuoco Pianissimo, Italian four knights variation41037.6%51.5%
C50Giuoco Piano81038.4%52.3%
C50Giuoco Piano, four knights variation6336.5%53.2%
C50Hungarian defence17940.2%49.7%
C50King's pawn game22635.8%60.0%
C50Rousseau gambit333.3%50.0%
C51Evans counter-gambit650.0%58.3%
C51Evans gambit450.0%75.0%
C51Evans gambit declined3023.3%58.3%
C51Evans gambit declined, 5.a417242.4%46.2%
C51Evans gambit declined, Lange variation20.0%0.0%
C51Evans gambit declined, Showalter variation3447.1%52.9%
C51Evans gambit, 5...Be74436.4%59.1%
C51Evans gambit, Cordel variation8749.4%46.6%
C51Evans gambit, Fraser attack20.0%100.0%
C51Evans gambit, Goering attack10.0%100.0%
C51Evans gambit, Morphy attack2142.9%54.8%
C51Evans gambit, Paulsen variation1827.8%69.4%
C51Evans gambit, Stone-Ware variation21033.8%49.8%
C51Evans gambit, normal variation2020.0%50.0%
C52Evans gambit30538.4%46.4%
C52Evans gambit, Alapin-Steinitz variation250.0%25.0%
C52Evans gambit, Lasker defence825.0%25.0%
C52Evans gambit, Leonhardt variation450.0%50.0%
C52Evans gambit, Levenfish variation616.7%25.0%
C52Evans gambit, Richardson attack1936.8%28.9%
C52Evans gambit, Sanders-Alapin variation20.0%100.0%
C52Evans gambit, Tartakower attack7245.8%43.8%
C52Evans gambit, Waller attack60.0%100.0%
C52Evans gambit, compromised defence4420.5%73.9%
C52Evans gambit, compromised defence, Paulsen variation1625.0%62.5%
C53Giuoco Piano211838.1%52.7%
C53Giuoco Piano, Anderssen variation2060.0%40.0%
C53Giuoco Piano, Bird's attack15429.9%49.4%
C53Giuoco Piano, LaBourdonnais variation2152.4%50.0%
C53Giuoco Piano, Mestel variation333.3%83.3%
C53Giuoco Piano, centre-holding variation5036.0%62.0%
C53Giuoco Piano, close variation4837.5%60.4%
C54Giuoco Piano18053.3%52.8%
C54Giuoco Piano, Moeller (Therkatz) attack3745.9%47.3%
C54Giuoco Piano, Moeller, bayonet attack10.0%100.0%
C54Giuoco Piano, Therkatz-Herzog variation10.0%0.0%
C55Giuoco piano20.0%50.0%
C55Two knights defence6744.8%52.2%
C55Two knights defence (Modern bishop's opening)135538.5%56.2%
C55Two knights defence, Keidanz variation1100.0%50.0%
C55Two knights defence, Perreux variation2744.4%55.6%
C55Two knights, Max Lange attack2138.1%52.4%
C55Two knights, Max Lange attack, Loman defence10.0%100.0%
C55Two knights, Max Lange attack, Marshall variation825.0%62.5%
C55Two knights, Max Lange attack, Schlechter variation2250.0%52.3%
C55Two knights, Max Lange attack, Steinitz variation1241.7%62.5%
C56Two knights defence13943.9%49.3%
C56Two knights defence, Canal variation540.0%40.0%
C57Two knights defence1216.7%41.7%
C57Two knights defence, Fegatello attack6826.5%52.9%
C57Two knights defence, Fegatello attack, Leonhardt variation825.0%50.0%
C57Two knights defence, Fegatello attack, Polerio defence40.0%100.0%
C57Two knights defence, Fritz variation2556.0%48.0%
C57Two knights defence, Fritz, Gruber variation633.3%50.0%
C57Two knights defence, Lolli attack1936.8%55.3%
C57Two knights defence, Ulvestad variation3259.4%45.3%
C57Two knights defence, Wilkes Barre (Traxler) variation5637.5%56.3%
C58Two knights defence19535.9%56.4%
C58Two knights defence, Blackburne variation30.0%66.7%
C58Two knights defence, Bogolyubov variation6031.7%45.8%
C58Two knights defence, Colman variation4231.0%39.3%
C58Two knights defence, Kieseritsky variation850.0%62.5%
C58Two knights defence, Paoli variation933.3%72.2%
C58Two knights defence, Yankovich variation1241.7%20.8%
C59Two knights defence19238.0%49.2%
C59Two knights defence, Goering variation425.0%12.5%
C59Two knights defence, Steinitz variation34529.3%48.0%
C60Ruy Lopez (Spanish opening)3923.1%62.8%
C60Ruy Lopez, Cozio defence30342.6%51.3%
C60Ruy Lopez, Cozio defence, Paulsen variation3727.0%70.3%
C60Ruy Lopez, Lucena defence425.0%62.5%
C60Ruy Lopez, Vinogradov variation250.0%75.0%
C60Ruy Lopez, fianchetto (Smyslov/Barnes) defence35241.8%51.3%
C61Ruy Lopez, Bird's defence21641.2%58.6%
C61Ruy Lopez, Bird's defence, Paulsen variation650.0%58.3%
C62Ruy Lopez, old Steinitz defence28239.4%54.8%
C62Ruy Lopez, old Steinitz defence, Nimzovich attack520.0%50.0%
C63Ruy Lopez, Schliemann defence33843.5%57.8%
C63Ruy Lopez, Schliemann defence, Berger variation38843.0%56.6%
C64Ruy Lopez, Cordel gambit7342.5%56.8%
C64Ruy Lopez, classical (Cordel) defence23641.9%53.6%
C64Ruy Lopez, classical defence, 4.c326741.9%55.8%
C64Ruy Lopez, classical defence, Benelux variation 40139.9%56.4%
C64Ruy Lopez, classical defence, Charousek variation540.0%80.0%
C64Ruy Lopez, classical defence, Zaitsev variation2100.0%50.0%
C65Ruy Lopez, Berlin defence303839.6%51.2%
C65Ruy Lopez, Berlin defence, 4.O-O18241.2%58.5%
C65Ruy Lopez, Berlin defence, Anderssen variation1100.0%50.0%
C65Ruy Lopez, Berlin defence, Beverwijk variation51837.1%57.5%
C65Ruy Lopez, Berlin defence, Duras variation1435.7%53.6%
C65Ruy Lopez, Berlin defence, Kaufmann variation3246.9%54.7%
C65Ruy Lopez, Berlin defence, Mortimer variation1560.0%30.0%
C65Ruy Lopez, Berlin defence, Nyholm attack7755.8%53.9%
C66Ruy Lopez, Berlin defence, 4.O-O, d69649.0%55.7%
C66Ruy Lopez, Berlin defence, hedgehog variation10351.5%58.7%
C66Ruy Lopez, closed Berlin defence, Bernstein variation1435.7%53.6%
C66Ruy Lopez, closed Berlin defence, Chigorin variation40.0%50.0%
C66Ruy Lopez, closed Berlin defence, Showalter variation5547.3%56.4%
C66Ruy Lopez, closed Berlin defence, Wolf variation6157.4%56.6%
C67Ruy Lopez, Berlin defence, Cordel variation5935.6%58.5%
C67Ruy Lopez, Berlin defence, Minckwitz variation4348.8%61.6%
C67Ruy Lopez, Berlin defence, Pillsbury variation10.0%0.0%
C67Ruy Lopez, Berlin defence, Rosenthal variation2548.0%64.0%
C67Ruy Lopez, Berlin defence, Trifunovic variation520.0%90.0%
C67Ruy Lopez, Berlin defence, Winawer attack2934.5%69.0%
C67Ruy Lopez, Berlin defence, Zukertort variation1553.3%60.0%
C67Ruy Lopez, Berlin defence, open variation371946.3%54.0%
C67Ruy Lopez, open Berlin defence, 5...Be77437.8%52.7%
C67Ruy Lopez, open Berlin defence, Showalter variation1625.0%50.0%
C67Ruy Lopez, open Berlin defence, l'Hermet variation8356.6%50.0%
C68Ruy Lopez, exchange variation8240.2%53.0%
C68Ruy Lopez, exchange, Alekhine variation1637.5%43.8%
C68Ruy Lopez, exchange, Keres variation9851.0%52.0%
C68Ruy Lopez, exchange, Romanovsky variation1631.3%53.1%
C69Ruy Lopez, exchange variation, 5.O-O71042.1%53.9%
C69Ruy Lopez, exchange variation, Alapin gambit28642.0%51.0%
C69Ruy Lopez, exchange, Bronstein variation50734.1%50.6%
C69Ruy Lopez, exchange, Gligoric variation74242.9%55.0%
C70Ruy Lopez6440.6%56.3%
C70Ruy Lopez, Alapin's defence deferred1533.3%76.7%
C70Ruy Lopez, Caro variation8641.9%59.3%
C70Ruy Lopez, Classical defence deferred9744.3%60.3%
C70Ruy Lopez, Cozio defence deferred31744.8%52.7%
C70Ruy Lopez, Graz variation6100.0%50.0%
C70Ruy Lopez, Schliemann defence deferred2128.6%71.4%
C70Ruy Lopez, Taimanov (chase/wing/accelerated counterthrust) variation13338.3%64.3%
C70Ruy Lopez, fianchetto defence deferred5855.2%53.4%
C71Ruy Lopez, modern Steinitz defence11242.9%55.4%
C71Ruy Lopez, modern Steinitz defence, Duras (Keres) variation12543.2%57.6%
C71Ruy Lopez, modern Steinitz defence, Three knights variation1741.2%50.0%
C72Ruy Lopez, modern Steinitz defence, 5.O-O46644.8%57.4%
C73Ruy Lopez, modern Steinitz defence, Alapin variation10636.8%51.4%
C73Ruy Lopez, modern Steinitz defence, Richter variation14651.4%53.8%
C74Ruy Lopez, Siesta, Kopayev variation14532.4%55.5%
C74Ruy Lopez, modern Steinitz defence6734.3%56.0%
C74Ruy Lopez, modern Steinitz defence, siesta variation2638.5%50.0%
C75Ruy Lopez, modern Steinitz defence16243.2%54.3%
C75Ruy Lopez, modern Steinitz defence, Rubinstein variation8538.8%55.9%
C76Ruy Lopez, modern Steinitz defence, fianchetto (Bronstein) variation34334.7%51.5%
C77Ruy Lopez, Anderssen variation94041.5%51.5%
C77Ruy Lopez, Morphy defence20839.4%56.3%
C77Ruy Lopez, Morphy defence, Duras variation5240.4%56.7%
C77Ruy Lopez, Treybal (Bayreuth) variation (exchange var. deferred)7443.2%44.6%
C77Ruy Lopez, Wormald (Alapin) attack36042.8%54.4%
C77Ruy Lopez, Wormald attack, Gruenfeld variation2100.0%50.0%
C77Ruy Lopez, four knights (Tarrasch) variation15547.1%55.8%
C78Ruy Lopez, ...b5 & ...d65236.5%52.9%
C78Ruy Lopez, 5.O-O112546.3%54.5%
C78Ruy Lopez, Archangelsk (counterthrust) variation158141.9%54.6%
C78Ruy Lopez, Moeller defence58242.3%53.3%
C78Ruy Lopez, Wing attack850.0%50.0%
C79Ruy Lopez, Steinitz defence deferred (Russian defence)25741.2%54.5%
C79Ruy Lopez, Steinitz defence deferred, Lipnitsky variation1172.7%54.5%
C79Ruy Lopez, Steinitz defence deferred, Rubinstein variation1435.7%60.7%
C80Ruy Lopez, open (Tarrasch) defence5745.6%59.6%
C80Ruy Lopez, open, 6.d44537.8%45.6%
C80Ruy Lopez, open, 7.Bb348541.0%52.9%
C80Ruy Lopez, open, 8...Be6124238.5%43.2%
C80Ruy Lopez, open, Berger variation366.7%33.3%
C80Ruy Lopez, open, Bernstein variation89648.3%62.9%
C80Ruy Lopez, open, Bernstein variation, Karpov gambit2646.2%42.3%
C80Ruy Lopez, open, Friess attack1020.0%60.0%
C80Ruy Lopez, open, Harksen gambit10.0%100.0%
C80Ruy Lopez, open, Riga variation1050.0%65.0%
C80Ruy Lopez, open, Schlechter defence1931.6%26.3%
C80Ruy Lopez, open, Tartakower variation1154.5%45.5%
C80Ruy Lopez, open, Zukertort variation333.3%50.0%
C81Ruy Lopez, open, Howell attack14650.7%52.1%
C81Ruy Lopez, open, Howell attack, Adam variation20.0%0.0%
C81Ruy Lopez, open, Howell attack, Ekstroem variation1040.0%60.0%
C82Ruy Lopez, open, 9.c3728.6%71.4%
C82Ruy Lopez, open, Berlin variation2429.2%72.9%
C82Ruy Lopez, open, Dilworth variation16041.9%60.9%
C82Ruy Lopez, open, Italian variation9350.5%65.1%
C82Ruy Lopez, open, Motzko attack6746.3%59.0%
C82Ruy Lopez, open, Motzko attack, Nenarokov variation1060.0%70.0%
C82Ruy Lopez, open, St. Petersburg variation19141.4%65.7%
C83Ruy Lopez, open, 9...Be7, 10.Re14334.9%54.7%
C83Ruy Lopez, open, Breslau variation250.0%75.0%
C83Ruy Lopez, open, Malkin variation1662.5%56.3%
C83Ruy Lopez, open, classical defence18147.5%60.8%
C84Ruy Lopez, closed defence135040.7%52.1%
C84Ruy Lopez, closed, Basque gambit (North Spanish variation)250.0%25.0%
C84Ruy Lopez, closed, centre attack17348.6%46.2%
C85Ruy Lopez, Exchange variation doubly deferred (DERLD)128139.7%49.1%
C86Ruy Lopez, Worrall attack2454.2%56.3%
C86Ruy Lopez, Worrall attack, sharp line22638.1%53.1%
C86Ruy Lopez, Worrall attack, solid line8040.0%47.5%
C87Ruy Lopez, closed, Averbach variation26440.9%59.8%
C88Ruy Lopez, Trajkovic counter-attack65141.6%52.0%
C88Ruy Lopez, closed124841.4%52.7%
C88Ruy Lopez, closed, 7...O-O288040.3%52.2%
C88Ruy Lopez, closed, 7...d6, 8.d42133.3%21.4%
C88Ruy Lopez, closed, 8.c32737.0%63.0%
C88Ruy Lopez, closed, Balla variation4436.4%54.5%
C88Ruy Lopez, closed, anti-Marshall 8.a4156339.5%53.7%
C89Ruy Lopez, Marshall counter-attack52052.5%54.5%
C89Ruy Lopez, Marshall counter-attack, 11...c617646.0%56.0%
C89Ruy Lopez, Marshall, Herman Steiner variation333.3%83.3%
C89Ruy Lopez, Marshall, Kevitz variation2100.0%50.0%
C89Ruy Lopez, Marshall, main line, 12.d2d421342.3%62.9%
C89Ruy Lopez, Marshall, main line, 14...Qh342750.4%50.9%
C89Ruy Lopez, Marshall, main line, Spassky variation10.0%0.0%
C90Ruy Lopez, closed (with ...d6)119436.9%51.5%
C90Ruy Lopez, closed, Lutikov variation3748.6%56.8%
C90Ruy Lopez, closed, Pilnik variation82535.5%51.7%
C90Ruy Lopez, closed, Suetin variation7735.1%56.5%
C91Ruy Lopez, closed, 9.d4121939.0%57.8%
C91Ruy Lopez, closed, Bogolyubov variation379943.2%53.8%
C92Ruy Lopez, closed, 9.h338642.7%52.2%
C92Ruy Lopez, closed, Flohr-Zaitsev system (Lenzerheide variation)188138.6%56.3%
C92Ruy Lopez, closed, Keres (9...a5) variation1850.0%47.2%
C92Ruy Lopez, closed, Kholmov variation12230.3%66.0%
C92Ruy Lopez, closed, Ragozin-Petrosian (`Keres') variation32042.5%63.8%
C93Ruy Lopez, closed, Smyslov defence16540.6%57.9%
C94Ruy Lopez, closed, Breyer defence6139.3%57.4%
C95Ruy Lopez, closed, Breyer, 10.d410.0%0.0%
C95Ruy Lopez, closed, Breyer, Borisenko variation73740.2%56.4%
C95Ruy Lopez, closed, Breyer, Gligoric variation4845.8%54.2%
C95Ruy Lopez, closed, Breyer, Simagin variation2035.0%57.5%
C96Ruy Lopez, closed (10...c5)64433.1%64.7%
C96Ruy Lopez, closed (8...Na5)2254.5%63.6%
C96Ruy Lopez, closed, Borisenko defence4040.0%57.5%
C96Ruy Lopez, closed, Keres (...Nd7) defence21137.4%65.6%
C96Ruy Lopez, closed, Rossolimo defence30.0%33.3%
C97Ruy Lopez, closed, Chigorin defence76930.6%63.5%
C98Ruy Lopez, closed, Chigorin, 12...Nc613831.9%61.6%
C99Ruy Lopez, closed, Chigorin, 12...c5d490940.3%62.7%
D00Blackmar gambit21240.1%40.8%
D00Blackmar-Diemer gambit3020.0%40.0%
D00Blackmar-Diemer, Euwe defence2821.4%46.4%
D00Levitsky attack (Queen's bishop attack)197236.7%52.0%
D00Queen's pawn game66737.6%50.3%
D00Queen's pawn, Anti-Veresov366.7%33.3%
D00Queen's pawn, Chigorin variation34134.0%51.6%
D00Queen's pawn, Mason variation100339.1%52.8%
D00Queen's pawn, Mason variation, Steinitz counter-gambit50437.1%50.5%
D00Queen's pawn, stonewall attack5937.3%44.1%
D01Richter-Veresov attack47736.3%45.8%
D01Richter-Veresov attack, Richter variation1723.5%52.9%
D01Richter-Veresov attack, Veresov variation2250.0%47.7%
D02Queen's bishop game137038.2%53.6%
D02Queen's pawn game502341.0%52.7%
D02Queen's pawn game, Chigorin variation42740.3%57.1%
D02Queen's pawn game, Krause variation39045.6%54.1%
D03Torre attack (Tartakower variation)66839.4%51.0%
D04Queen's pawn game81340.7%51.2%
D05Colle system18747.1%54.5%
D05Queen's pawn game61535.4%52.7%
D05Queen's pawn game, Rubinstein (Colle-Zukertort) variation25739.3%54.3%
D05Queen's pawn game, Zukertort variation2857.1%57.1%
D06QGD, Grau (Sahovic) defence12736.2%61.4%
D06QGD, Marshall defence15843.7%58.5%
D06QGD, symmetrical (Austrian) defence4748.9%58.5%
D07QGD, Chigorin defence77135.9%57.0%
D07QGD, Chigorin defence, Janowski variation9334.4%63.4%
D08QGD, Albin counter-gambit16741.9%57.5%
D08QGD, Albin counter-gambit, Alapin variation3050.0%61.7%
D08QGD, Albin counter-gambit, Balogh variation911.1%83.3%
D08QGD, Albin counter-gambit, Janowski variation650.0%58.3%
D08QGD, Albin counter-gambit, Lasker trap50.0%60.0%
D09QGD, Albin counter-gambit, 5.g314443.8%56.6%
D10QGD Slav defence389541.0%54.1%
D10QGD Slav defence, Alekhine variation26238.9%55.0%
D10QGD Slav defence, exchange variation150644.4%55.5%
D10QGD Slav, Winawer counter-gambit16633.1%55.1%
D11QGD Slav, 3.Nf3244141.0%55.7%
D11QGD Slav, 4.e3426741.8%55.4%
D11QGD Slav, Breyer variation13345.1%59.4%
D12QGD Slav, 4.e3 Bf5307540.0%54.4%
D12QGD Slav, Amsterdam variation2152.4%45.2%
D12QGD Slav, exchange variation9237.0%50.0%
D13QGD Slav, exchange variation72246.3%55.4%
D14QGD Slav, exchange variation, 6.Bf4 Bf567949.5%51.0%
D14QGD Slav, exchange, Trifunovic variation21149.3%52.6%
D15QGD Slav accepted9642.7%51.6%
D15QGD Slav, 4.Nc3401739.6%54.7%
D15QGD Slav, 5.e3 (Alekhine variation)16630.7%55.1%
D15QGD Slav, Schlechter variation29143.0%59.3%
D15QGD Slav, Slav gambit2420.8%56.3%
D15QGD Slav, Suechting variation14430.6%59.0%
D15QGD Slav, Tolush-Geller gambit12227.9%41.0%
D16QGD Slav accepted, Alapin variation17738.4%65.5%
D16QGD Slav, Smyslov variation7332.9%58.9%
D16QGD Slav, Soultanbeieff variation42749.2%53.6%
D16QGD Slav, Steiner variation22637.2%62.8%
D17QGD Slav, Carlsbad variation47936.7%60.5%
D17QGD Slav, Czech defence38948.1%54.9%
D17QGD Slav, Krause attack71339.1%58.3%
D17QGD Slav, Wiesbaden variation63542.2%57.0%
D18QGD Slav, Dutch variation28140.9%60.3%
D18QGD Slav, Dutch, Lasker variation425.0%87.5%
D19QGD Slav, Dutch variation133939.2%57.2%
D19QGD Slav, Dutch variation, main line22140.7%56.6%
D19QGD Slav, Dutch, Saemisch variation250.0%25.0%
D20QGA, 3.e4296039.7%56.4%
D20QGA, Linares variation8434.5%62.5%
D20Queen's gambit accepted93346.1%55.3%
D21QGA, 3.Nf328140.9%57.5%
D21QGA, Alekhine defense, Borisenko-Furman variation3026.7%46.7%
D21QGA, Ericson variation60.0%33.3%
D22QGA, Alekhine defence24740.5%54.7%
D22QGA, Alekhine defence, Alatortsev variation1250.0%41.7%
D22QGA, Haberditz variation12357.7%52.4%
D23QGA, Mannheim variation32846.6%52.6%
D23Queen's gambit accepted3935.9%53.8%
D24QGA, 4.Nc320541.0%50.7%
D24QGA, Bogolyubov variation15848.1%56.3%
D25QGA, 4.e312739.4%57.5%
D25QGA, Flohr variation7431.1%66.9%
D25QGA, Janowsky-Larsen variation36739.8%57.5%
D25QGA, Smyslov variation9553.7%58.4%
D26QGA, 4...e627045.2%52.6%
D26QGA, classical variation69751.9%53.1%
D26QGA, classical variation, 6.O-O15947.2%58.2%
D26QGA, classical, Furman variation10.0%0.0%
D26QGA, classical, Steinitz variation6256.5%65.3%
D27QGA, classical, 6...a6395150.9%55.2%
D27QGA, classical, Geller variation7652.6%53.9%
D27QGA, classical, Rubinstein variation146647.5%56.1%
D28QGA, classical, 7...b520151.7%56.2%
D28QGA, classical, 7.Qe26450.0%60.9%
D29QGA, classical, 8...Bb730941.4%47.9%
D29QGA, classical, Smyslov variation4153.7%46.3%
D30QGD82947.4%51.8%
D30QGD Slav32843.0%54.1%
D30QGD Slav, Semmering variation2729.6%51.9%
D30QGD, Capablanca variation3531.4%58.6%
D30QGD, Capablanca-Duras variation35545.4%53.7%
D30QGD, Hastings variation58647.3%52.5%
D30QGD, Vienna variation76853.1%52.5%
D30Queen's gambit declined608245.4%55.5%
D31QGD, 3.Nc385041.4%55.2%
D31QGD, Alapin variation742.9%64.3%
D31QGD, Charousek (Petrosian) variation154345.2%53.3%
D31QGD, Janowski variation17041.8%56.2%
D31QGD, semi-Slav105640.0%54.9%
D31QGD, semi-Slav, Abrahams variation13735.8%44.2%
D31QGD, semi-Slav, Junge variation1030.0%35.0%
D31QGD, semi-Slav, Koomen variation955.6%38.9%
D31QGD, semi-Slav, Marshall gambit88243.3%54.2%
D31QGD, semi-Slav, Noteboom variation26237.8%51.7%
D32QGD, Tarrasch defence34446.8%53.6%
D32QGD, Tarrasch defence, 4.cd ed2638.5%50.0%
D32QGD, Tarrasch defence, Marshall gambit633.3%50.0%
D32QGD, Tarrasch defence, Tarrasch gambit944.4%33.3%
D32QGD, Tarrasch, von Hennig-Schara gambit6943.5%62.3%
D33QGD, Tarrasch, Folkestone (Swedish) variation5650.0%60.7%
D33QGD, Tarrasch, Prague variation8137.0%53.1%
D33QGD, Tarrasch, Schlechter-Rubinstein system2040.0%55.0%
D33QGD, Tarrasch, Wagner variation1338.5%57.7%
D34QGD, Tarrasch, Prague variation, 7...Be718042.2%56.1%
D34QGD, Tarrasch, Prague variation, 9.Bg554547.5%57.5%
D34QGD, Tarrasch, Prague variation, Normal position67047.9%56.2%
D34QGD, Tarrasch, Reti variation3060.0%60.0%
D35QGD, 3...Nf69138.5%48.9%
D35QGD, Harrwitz attack21553.0%55.3%
D35QGD, exchange variation38143.0%55.9%
D35QGD, exchange, Saemisch variation30846.8%54.2%
D35QGD, exchange, positional line101840.4%54.4%
D35QGD, exchange, positional line, 5...c679542.4%55.4%
D36QGD, exchange, positional line, 6.Qc227743.0%52.9%
D37QGD, 4.Nf3556046.4%52.9%
D37QGD, classical variation (5.Bf4)418944.9%55.3%
D38QGD, Ragozin variation423246.1%52.4%
D39QGD, Ragozin, Vienna variation159250.1%51.1%
D40QGD, Semi-Tarrasch defence42242.2%54.7%
D40QGD, Semi-Tarrasch defence, Pillsbury variation3036.7%58.3%
D40QGD, Semi-Tarrasch, Levenfish variation10.0%100.0%
D40QGD, Semi-Tarrasch, symmetrical variation1145.5%50.0%
D41QGD, Semi-Tarrasch with e318246.7%57.4%
D41QGD, Semi-Tarrasch, 5.cd62448.2%57.1%
D41QGD, Semi-Tarrasch, Kmoch variation875.0%50.0%
D41QGD, Semi-Tarrasch, San Sebastian variation2437.5%77.1%
D42QGD, Semi-Tarrasch, 7.Bd326543.4%55.7%
D43QGD semi-Slav701141.1%52.9%
D43QGD semi-Slav, Hastings variation520.0%90.0%
D44QGD semi-Slav, 5.Bg5 dc15346.4%49.3%
D44QGD semi-Slav, Botvinnik system (anti-Meran)7737.7%56.5%
D44QGD semi-Slav, Ekstrom variation2646.2%38.5%
D44QGD semi-Slav, anti-Meran gambit76634.9%58.2%
D44QGD semi-Slav, anti-Meran, Alatortsev system1100.0%50.0%
D44QGD semi-Slav, anti-Meran, Lilienthal variation16530.3%66.7%
D44QGD semi-Slav, anti-Meran, Szabo variation2420.8%35.4%
D45QGD semi-Slav, 5...Nd754538.3%53.1%
D45QGD semi-Slav, 5.e341140.4%56.2%
D45QGD semi-Slav, Rubinstein (anti-Meran) system1533.3%43.3%
D45QGD semi-Slav, Stoltz variation1174143.4%53.2%
D45QGD semi-Slav, accelerated Meran (Alekhine variation)207243.5%53.9%
D45QGD semi-Slav, stonewall defence1154.5%54.5%
D46QGD semi-Slav, 6.Bd33938.5%62.8%
D46QGD semi-Slav, Bogolyubov variation16642.8%56.3%
D46QGD semi-Slav, Chigorin defence43345.0%53.9%
D46QGD semi-Slav, Romih variation17436.8%63.8%
D47QGD semi-Slav, 7.Bc46437.5%53.1%
D47QGD semi-Slav, Meran variation128349.0%54.8%
D47QGD semi-Slav, Meran, Wade variation692739.5%53.6%
D47QGD semi-Slav, neo-Meran (Lundin variation)30547.5%54.6%
D48QGD semi-Slav, Meran214.8%40.5%
D48QGD semi-Slav, Meran, 8...a6140449.4%48.9%
D48QGD semi-Slav, Meran, Pirc variation955.6%72.2%
D48QGD semi-Slav, Meran, Reynolds' variation75739.9%56.3%
D48QGD semi-Slav, Meran, old main line11235.7%52.7%
D49QGD semi-Slav, Meran, Blumenfeld variation17446.6%51.4%
D49QGD semi-Slav, Meran, Rabinovich variation6225.8%43.5%
D49QGD semi-Slav, Meran, Rellstab attack1637.5%62.5%
D49QGD semi-Slav, Meran, Sozin variation15744.6%45.9%
D49QGD semi-Slav, Meran, Stahlberg variation8041.3%45.6%
D50QGD, 4.Bg59544.2%53.7%
D50QGD, Been-Koomen variation650.0%25.0%
D50QGD, Canal (Venice) variation425.0%62.5%
D50QGD, Semi-Tarrasch1435.7%53.6%
D50QGD, Semi-Tarrasch, Krause variation1100.0%50.0%
D50QGD, Semi-Tarrasch, Primitive Pillsbury variation1241.7%54.2%
D51QGD2365.2%63.0%
D51QGD, 4.Bg5 Nbd77741.6%53.2%
D51QGD, 5...c68855.7%52.8%
D51QGD, Alekhine variation40.0%50.0%
D51QGD, Capablanca anti-Cambridge Springs variation1963.2%68.4%
D51QGD, Manhattan variation1442.9%64.3%
D52QGD14841.2%59.1%
D52QGD, Cambridge Springs defence3842.1%47.4%
D52QGD, Cambridge Springs defence, 7.cd4537.8%54.4%
D52QGD, Cambridge Springs defence, Argentine variation1931.6%42.1%
D52QGD, Cambridge Springs defence, Bogoljubow variation42647.7%56.0%
D52QGD, Cambridge Springs defence, Capablanca variation3636.1%59.7%
D52QGD, Cambridge Springs defence, Rubinstein variation16538.8%54.5%
D52QGD, Cambridge Springs defence, Yugoslav variation41037.6%56.1%
D53QGD, 4.Bg5 Be799045.9%54.6%
D53QGD, 4.Bg5 Be7, 5.e3 O-O4748.9%50.0%
D53QGD, Lasker variation425.0%87.5%
D54QGD, Anti-neo-orthodox variation5044.0%50.0%
D55QGD, 6.Nf313135.9%57.6%
D55QGD, Neo-orthodox variation633.3%50.0%
D55QGD, Neo-orthodox variation, 7.Bh413744.5%58.0%
D55QGD, Neo-orthodox variation, 7.Bxf635645.2%51.3%
D55QGD, Petrosian variation36551.8%53.8%
D56QGD, Lasker defence34046.2%53.7%
D56QGD, Lasker defence, Teichmann variation9651.0%49.5%
D57QGD, Lasker defence, Bernstein variation1070.0%45.0%
D57QGD, Lasker defence, main line5356.6%50.9%
D58QGD, Tartakower (Makagonov-Bondarevsky) system498746.4%52.0%
D59QGD, Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd518848.9%46.8%
D59QGD, Tartakower variation11446.5%46.1%
D60QGD, Orthodox defence10436.5%55.8%
D60QGD, Orthodox defence, Botvinnik variation7133.8%50.7%
D60QGD, Orthodox defence, Rauzer variation4643.5%63.0%
D61QGD, Orthodox defence, Rubinstein variation24245.9%52.3%
D62QGD, Orthodox defence, 7.Qc2 c5, 8.cd (Rubinstein)15650.0%56.4%
D63QGD, Orthodox defence10747.7%59.3%
D63QGD, Orthodox defence, 7.Rc123037.8%57.6%
D63QGD, Orthodox defence, Capablanca variation1100.0%50.0%
D63QGD, Orthodox defence, Pillsbury attack2552.0%58.0%
D63QGD, Orthodox defence, Swiss (Henneberger) variation9443.6%62.2%
D63QGD, Orthodox defence, Swiss, Karlsbad variation17343.4%53.5%
D64QGD, Orthodox defence, Rubinstein attack (with Rc1)9644.8%56.8%
D64QGD, Orthodox defence, Rubinstein attack, Gruenfeld variation1625.0%50.0%
D64QGD, Orthodox defence, Rubinstein attack, Karlsbad variation2040.0%35.0%
D64QGD, Orthodox defence, Rubinstein attack, Wolf variation1346.2%46.2%
D65QGD, Orthodox defence, Rubinstein attack, main line1361.5%69.2%
D66QGD, Orthodox defence, Bd3 line25047.6%59.4%
D66QGD, Orthodox defence, Bd3 line, fianchetto variation1145.5%77.3%
D67QGD, Orthodox defence, Bd3 line1957.9%44.7%
D67QGD, Orthodox defence, Bd3 line, 11.O-O4936.7%65.3%
D67QGD, Orthodox defence, Bd3 line, Alekhine variation3756.8%55.4%
D68QGD, Orthodox defence, classical variation7248.6%56.3%
D68QGD, Orthodox defence, classical, 13.d1b1 (Maroczy)366.7%33.3%
D68QGD, Orthodox defence, classical, 13.d1c2 (Vidmar)4854.2%58.3%
D69QGD, Orthodox defence, classical, 13.de1553.3%53.3%
D70Neo-Gruenfeld (Kemeri) defence6443.8%53.1%
D70Neo-Gruenfeld defence21639.4%55.3%
D71Neo-Gruenfeld, 5.cd30147.5%56.6%
D72Neo-Gruenfeld, 5.cd, main line19533.8%60.5%
D73Neo-Gruenfeld, 5.Nf382550.9%55.2%
D74Neo-Gruenfeld, 6.cd Nxd5, 7.O-O22143.9%56.8%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc310951.4%58.7%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.dc1735.3%70.6%
D76Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb654043.5%57.7%
D77Neo-Gruenfeld, 6.O-O70246.7%54.3%
D78Neo-Gruenfeld, 6.O-O c677742.0%54.7%
D79Neo-Gruenfeld, 6.O-O, main line51748.4%54.4%
D80Gruenfeld defence89147.5%54.7%
D80Gruenfeld, Lundin variation10.0%0.0%
D80Gruenfeld, Stockholm variation70143.7%54.4%
D81Gruenfeld, Russian variation40543.5%61.7%
D82Gruenfeld, 4.Bf454345.5%53.1%
D83Gruenfeld, Gruenfeld gambit2748.1%61.1%
D83Gruenfeld, Gruenfeld gambit, Botvinnik variation1573.3%63.3%
D83Gruenfeld, Gruenfeld gambit, Capablanca variation26942.4%57.6%
D84Gruenfeld, Gruenfeld gambit accepted6250.0%55.6%
D85Gruenfeld, exchange variation299347.7%56.4%
D85Gruenfeld, modern exchange variation320046.6%55.8%
D86Gruenfeld, exchange, Larsen variation30.0%66.7%
D86Gruenfeld, exchange, Simagin's improved variation12339.8%52.4%
D86Gruenfeld, exchange, Simagin's lesser variation5541.8%59.1%
D86Gruenfeld, exchange, classical variation107845.7%55.6%
D87Gruenfeld, exchange, Seville variation7754.5%62.3%
D87Gruenfeld, exchange, Spassky variation53141.8%55.6%
D88Gruenfeld, Spassky variation, main line, 10...cd, 11.cd20841.8%60.8%
D89Gruenfeld, Spassky variation, main line, 13.Bd37038.6%49.3%
D89Gruenfeld, exchange, Sokolsky variation850.0%37.5%
D90Gruenfeld, Flohr variation29937.8%56.0%
D90Gruenfeld, Schlechter variation2532.0%40.0%
D90Gruenfeld, Three knights variation59749.9%54.1%
D91Gruenfeld, 5.Bg590639.6%48.2%
D92Gruenfeld, 5.Bf468144.6%56.7%
D93Gruenfeld with Bf4 e328250.0%52.3%
D94Gruenfeld with e3 Bd32138.1%52.4%
D94Gruenfeld, 5.e342744.7%57.5%
D94Gruenfeld, Flohr defence2050.0%60.0%
D94Gruenfeld, Makogonov variation9246.7%47.3%
D94Gruenfeld, Opovcensky variation15842.4%54.1%
D94Gruenfeld, Smyslov defence16146.0%57.8%
D95Gruenfeld with e3 & Qb31844.4%61.1%
D95Gruenfeld, Botvinnik variation7544.0%51.3%
D96Gruenfeld, Russian variation24842.7%54.8%
D97Gruenfeld, Russian variation with e43732.4%62.2%
D97Gruenfeld, Russian, Alekhine (Hungarian) variation168444.4%51.2%
D97Gruenfeld, Russian, Byrne (Simagin) variation12437.9%59.3%
D97Gruenfeld, Russian, Levenfish variation1225.0%70.8%
D97Gruenfeld, Russian, Prins variation44943.7%57.0%
D97Gruenfeld, Russian, Szabo (Boleslavsky) variation22943.2%58.7%
D98Gruenfeld, Russian, Keres variation1540.0%46.7%
D98Gruenfeld, Russian, Smyslov variation25741.2%60.3%
D99Gruenfeld defence, Smyslov, Yugoslav variation1330.8%46.2%
D99Gruenfeld defence, Smyslov, main line17041.2%58.2%
E00Catalan opening328142.6%54.9%
E00Neo-Indian (Seirawan) attack18431.5%51.6%
E00Queen's pawn game42441.0%56.4%
E01Catalan, closed52149.1%52.8%
E02Catalan, open, 5.Qa414945.6%58.4%
E03Catalan, open, 5.Qa4 Nbd7, 6.Qxc48560.0%42.9%
E03Catalan, open, Alekhine variation1822.2%38.9%
E04Catalan, open, 5.Nf3439043.5%53.6%
E05Catalan, open, classical line10654.7%53.8%
E06Catalan, closed, 5.Nf3298348.3%54.0%
E07Catalan, closed, 6...Nbd77136.6%52.1%
E07Catalan, closed, Botvinnik variation7243.1%43.8%
E08Catalan, closed, 7.Qc29439.4%61.2%
E08Catalan, closed, Qc2 & b321643.5%51.4%
E08Catalan, closed, Spassky gambit728.6%57.1%
E08Catalan, closed, Zagoryansky variation475.0%37.5%
E09Catalan, closed, main line23033.9%61.3%
E10Blumenfeld counter-gambit31941.4%55.2%
E10Blumenfeld counter-gambit accepted12540.8%53.2%
E10Blumenfeld counter-gambit, Dus-Chotimursky variation17435.1%57.2%
E10Blumenfeld counter-gambit, Spielmann variation10433.7%58.2%
E10Doery defence2445.8%56.3%
E10Dzindzikhashvili defence8752.9%58.6%
E10Queen's pawn game422544.7%55.7%
E11Bogo-Indian defence156039.3%54.6%
E11Bogo-Indian defence, Gruenfeld variation206740.4%56.1%
E11Bogo-Indian defence, Monticelli trap1546.7%43.3%
E11Bogo-Indian defence, Nimzovich variation149238.8%57.5%
E12Queen's Indian defence67742.7%54.0%
E12Queen's Indian, 4.Nc3461540.3%53.1%
E12Queen's Indian, 4.Nc3, Botvinnik variation4022.5%46.3%
E12Queen's Indian, Miles variation147143.7%53.6%
E12Queen's Indian, Petrosian system669043.1%54.0%
E13Queen's Indian, 4.Nc3, main line21634.7%53.0%
E14Queen's Indian, 4.e3174440.0%53.6%
E14Queen's Indian, Averbakh variation20.0%50.0%
E15Queen's Indian, 4.g3252646.6%55.4%
E15Queen's Indian, 4.g3 Bb728439.8%54.0%
E15Queen's Indian, Buerger variation4339.5%61.6%
E15Queen's Indian, Nimzovich variation (exaggerated fianchetto)1476940.6%56.4%
E15Queen's Indian, Rubinstein variation14036.4%58.9%
E16Queen's Indian, Capablanca variation42642.0%56.9%
E16Queen's Indian, Riumin variation22339.5%56.1%
E16Queen's Indian, Yates variation38337.1%58.5%
E17Queen's Indian, 5.Bg2 Be73225.0%43.8%
E17Queen's Indian, Euwe variation6352.4%54.8%
E17Queen's Indian, Opovcensky variation69739.5%54.9%
E17Queen's Indian, anti-Queen's Indian system33738.0%52.5%
E17Queen's Indian, old main line, 6.O-O97242.1%58.8%
E18Queen's Indian, old main line, 7.Nc3165043.3%56.9%
E19Queen's Indian, old main line, 9.Qxc3137646.4%58.4%
E20Nimzo-Indian defence15450.0%52.9%
E20Nimzo-Indian, Kmoch variation76938.5%53.8%
E20Nimzo-Indian, Mikenas attack666.7%50.0%
E20Nimzo-Indian, Romanishin-Kasparov (Steiner) system44345.1%54.0%
E21Nimzo-Indian, three knights variation248541.2%54.3%
E21Nimzo-Indian, three knights, Euwe variation475.0%62.5%
E21Nimzo-Indian, three knights, Korchnoi variation40.0%50.0%
E22Nimzo-Indian, Spielmann variation14545.5%51.7%
E23Nimzo-Indian, Spielmann, 4...c5, 5.dc Nc64740.4%52.1%
E23Nimzo-Indian, Spielmann, Karlsbad variation1735.3%41.2%
E23Nimzo-Indian, Spielmann, San Remo variation757.1%71.4%
E23Nimzo-Indian, Spielmann, Staahlberg variation20.0%100.0%
E24Nimzo-Indian, Saemisch variation18348.1%48.6%
E24Nimzo-Indian, Saemisch, Botvinnik variation4835.4%40.6%
E25Nimzo-Indian, Saemisch variation14642.5%52.1%
E25Nimzo-Indian, Saemisch, Keres variation29346.1%54.1%
E25Nimzo-Indian, Saemisch, Romanovsky variation10250.0%51.5%
E26Nimzo-Indian, Saemisch variation8640.7%57.6%
E26Nimzo-Indian, Saemisch, O'Kelly variation2941.4%51.7%
E27Nimzo-Indian, Saemisch variation5347.2%44.3%
E28Nimzo-Indian, Saemisch variation13130.5%54.2%
E29Nimzo-Indian, Saemisch, Capablanca variation2839.3%41.1%
E29Nimzo-Indian, Saemisch, main line8638.4%56.4%
E30Nimzo-Indian, Leningrad variation63436.6%48.3%
E30Nimzo-Indian, Leningrad, ...b5 gambit7432.4%47.3%
E31Nimzo-Indian, Leningrad, main line23131.6%51.3%
E32Nimzo-Indian, classical variation639242.3%53.7%
E32Nimzo-Indian, classical, Adorjan gambit10343.7%51.0%
E33Nimzo-Indian, classical, 4...Nc610347.6%59.7%
E33Nimzo-Indian, classical, Milner-Barry (Zurich) variation31341.2%58.9%
E34Nimzo-Indian, classical, Noa variation79252.5%54.0%
E35Nimzo-Indian, classical, Noa variation, 5.cd ed56846.7%50.4%
E36Nimzo-Indian, classical, Botvinnik variation1442.9%57.1%
E36Nimzo-Indian, classical, Noa variation, 5.a329643.9%53.0%
E37Nimzo-Indian, classical, Noa variation, main line, 7.Qc237246.0%62.5%
E37Nimzo-Indian, classical, San Remo variation50.0%60.0%
E38Nimzo-Indian, classical, 4...c560837.7%60.1%
E39Nimzo-Indian, classical, Pirc variation96139.6%55.1%
E40Nimzo-Indian, 4.e314230.3%58.8%
E40Nimzo-Indian, 4.e3, Taimanov variation9736.1%63.4%
E41Nimzo-Indian, 4.e3 c574745.0%54.6%
E41Nimzo-Indian, e3, Huebner variation48533.2%51.9%
E42Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein)64845.7%54.2%
E43Nimzo-Indian, Fischer variation58936.5%54.1%
E44Nimzo-Indian, Fischer variation, 5.Ne242337.8%55.6%
E45Nimzo-Indian, 4.e3, Bronstein (Byrne) variation22349.8%56.3%
E46Nimzo-Indian, 4.e3 O-O7334.2%56.8%
E46Nimzo-Indian, Reshevsky variation94444.4%51.5%
E46Nimzo-Indian, Simagin variation14341.3%50.0%
E47Nimzo-Indian, 4.e3 O-O, 5.Bd358746.8%52.0%
E48Nimzo-Indian, 4.e3 O-O, 5.Bd3 d549642.7%49.2%
E49Nimzo-Indian, 4.e3, Botvinnik system20644.7%56.8%
E50Nimzo-Indian, 4.e3 e8g8, 5.Nf3, without ...d519142.4%51.0%
E51Nimzo-Indian, 4.e3 e8g8, 5.Nf3 d7d516151.6%50.0%
E51Nimzo-Indian, 4.e3, Ragozin variation2339.1%67.4%
E52Nimzo-Indian, 4.e3, main line with ...b647339.7%53.5%
E53Nimzo-Indian, 4.e3, Gligoric system with 7...Nbd76855.9%51.5%
E53Nimzo-Indian, 4.e3, Keres variation10436.5%47.1%
E53Nimzo-Indian, 4.e3, main line with ...c539740.6%54.3%
E54Nimzo-Indian, 4.e3, Gligoric system with 7...dc122648.7%55.8%
E54Nimzo-Indian, 4.e3, Gligoric system, Smyslov variation2564.0%68.0%
E55Nimzo-Indian, 4.e3, Gligoric system, Bronstein variation187548.2%55.7%
E56Nimzo-Indian, 4.e3, main line with 7...Nc635151.0%56.0%
E57Nimzo-Indian, 4.e3, main line with 8...dc and 9...cd333.3%16.7%
E58Nimzo-Indian, 4.e3, main line with 8...Bxc3146044.7%52.9%
E59Nimzo-Indian, 4.e3, main line74643.4%53.5%
E60King's Indian defence76535.7%55.8%
E60King's Indian, 3.Nf3285039.5%57.6%
E60King's Indian, 3.g3166342.4%56.2%
E60King's Indian, 3.g3, counterthrust variation1330.8%30.8%
E60King's Indian, Anti-Gruenfeld5431.5%60.2%
E60King's Indian, Danube gambit666.7%66.7%
E60Queen's pawn, Mengarini attack3735.1%60.8%
E61King's Indian defence, 3.Nc387736.1%55.4%
E61King's Indian, Smyslov system8737.9%54.6%
E62King's Indian, fianchetto variation6934.8%52.2%
E62King's Indian, fianchetto with ...Nc623833.2%54.8%
E62King's Indian, fianchetto, Kavalek (Bronstein) variation56633.0%60.5%
E62King's Indian, fianchetto, Larsen system29040.7%62.4%
E62King's Indian, fianchetto, Simagin variation8435.7%64.3%
E62King's Indian, fianchetto, Uhlmann (Szabo) variation29533.6%58.5%
E62King's Indian, fianchetto, lesser Simagin (Spassky) variation30636.3%61.3%
E63King's Indian, fianchetto, Panno variation217737.9%57.1%
E64King's Indian, fianchetto, Yugoslav system10337.9%59.7%
E65King's Indian, fianchetto, Yugoslav, 7.O-O18452.7%52.4%
E66King's Indian, fianchetto, Yugoslav Panno31834.6%56.9%
E67King's Indian, fianchetto with ...Nd710136.6%56.9%
E67King's Indian, fianchetto, classical variation51941.0%55.6%
E68King's Indian, fianchetto, classical variation, 8.e4125838.7%59.7%
E69King's Indian, fianchetto, classical main line44533.5%62.1%
E70King's Indian, 4.e497533.3%58.3%
E70King's Indian, Kramer system35832.4%58.1%
E70King's Indian, accelerated Averbakh system12334.1%56.1%
E71King's Indian, Makagonov system (5.h3)76035.0%59.6%
E72King's Indian with e4 & g35834.5%56.9%
E72King's Indian, Pomar system1844.4%50.0%
E73King's Indian, 5.Be23735.1%58.1%
E73King's Indian, Averbakh system102233.8%55.1%
E73King's Indian, Semi-Averbakh system6142.6%55.7%
E74King's Indian, Averbakh, 6...c527736.8%56.0%
E75King's Indian, Averbakh, main line7623.7%60.5%
E76King's Indian, Four pawns attack22838.2%59.4%
E76King's Indian, Four pawns attack, dynamic line17238.4%52.3%
E77King's Indian, Four pawns attack11431.6%57.9%
E77King's Indian, Four pawns attack, 6.Be22356.5%54.3%
E77King's Indian, Four pawns attack, Florentine gambit650.0%41.7%
E78King's Indian, Four pawns attack, with Be2 and Nf32147.6%57.1%
E79King's Indian, Four pawns attack, main line1442.9%57.1%
E80King's Indian, Saemisch variation37033.5%58.9%
E81King's Indian, Saemisch, 5...O-O214933.8%55.4%
E81King's Indian, Saemisch, Byrne variation7939.2%53.8%
E82King's Indian, Saemisch, double fianchetto variation11034.5%57.3%
E83King's Indian, Saemisch, 6...Nc68127.2%43.2%
E83King's Indian, Saemisch, Panno formation22741.0%57.0%
E83King's Indian, Saemisch, Ruban variation1136.4%45.5%
E84King's Indian, Saemisch, Panno main line43037.9%52.7%
E85King's Indian, Saemisch, orthodox variation7337.0%52.7%
E86King's Indian, Saemisch, orthodox, 7.Nge2 c638029.5%54.5%
E87King's Indian, Saemisch, orthodox, 7.d528126.7%57.8%
E87King's Indian, Saemisch, orthodox, Bronstein variation1100.0%50.0%
E88King's Indian, Saemisch, orthodox, 7.d5 c632831.7%57.6%
E89King's Indian, Saemisch, orthodox main line3033.3%60.0%
E90King's Indian, 5.Nf386433.0%57.2%
E90King's Indian, Larsen variation9238.0%61.4%
E90King's Indian, Zinnowitz variation4045.0%57.5%
E91King's Indian, 6.Be260833.7%64.7%
E91King's Indian, Kazakh variation30036.7%56.0%
E92King's Indian, Andersson variation29854.4%49.3%
E92King's Indian, Gligoric-Taimanov system148934.3%58.5%
E92King's Indian, Petrosian system11228.6%51.8%
E92King's Indian, Petrosian system, Stein variation59533.1%54.0%
E92King's Indian, classical variation2934.5%41.4%
E93King's Indian, Petrosian system, main line8535.3%50.6%
E94King's Indian, orthodox variation100937.3%54.0%
E94King's Indian, orthodox, 7...Nbd792334.3%59.8%
E94King's Indian, orthodox, Donner variation20235.1%60.1%
E95King's Indian, orthodox, 7...Nbd7, 8.Re135135.6%56.0%
E96King's Indian, orthodox, 7...Nbd7, main line4738.3%59.6%
E97King's Indian, orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation)401433.1%55.9%
E97King's Indian, orthodox, Aronin-Taimanov, bayonet attack127335.3%58.2%
E98King's Indian, orthodox, Aronin-Taimanov, 9.Ne186726.4%60.7%
E99King's Indian, orthodox, Aronin-Taimanov, Benko attack6124.6%68.0%
E99King's Indian, orthodox, Aronin-Taimanov, main line2532.0%60.0%

Created in 2005-2013 by CCRL team
Last games added on June 23, 2018