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

White wins: 259'856 (34.4%)
Black wins: 192'693 (25.5%)
Draws: 303'876 (40.2%)
White score: 54.4%

Opening statistics

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

ECOOpeningNumber
of
games
DrawsWhite
score
Commented
PGN
A00Amar (Paris) opening1844.4%33.3%
A00Amar gambit10.0%0.0%
A00Amsterdam attack10.0%100.0%
A00Anderssen's opening39040.8%51.4%
A00Anti-Borg (Desprez) opening30.0%33.3%
A00Battambang opening1631.3%46.9%
A00Benko's opening574141.5%52.4%
A00Benko's opening, reversed Alekhine11342.5%48.7%
A00Clemenz (Mead's, Basman's or de Klerk's) opening2931.0%43.1%
A00Dunst (Sleipner, Heinrichsen) opening149335.8%49.6%
A00Durkin's attack650.0%41.7%
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 opening11930.3%52.9%
A00Novosibirsk opening2133.3%50.0%
A00Polish (Sokolsky) opening157738.5%48.5%
A00Polish, Outflank variation10444.2%48.1%
A00Saragossa opening28629.0%49.8%
A00Van't Kruijs opening44540.0%51.5%
A00Ware (Meadow Hay) opening425.0%62.5%
A01Nimzovich-Larsen attack57736.7%52.9%
A01Nimzovich-Larsen attack, Dutch variation1330.8%46.2%
A01Nimzovich-Larsen attack, English variation15536.1%50.3%
A01Nimzovich-Larsen attack, Indian variation23931.8%50.2%
A01Nimzovich-Larsen attack, classical variation92936.2%49.9%
A01Nimzovich-Larsen attack, modern variation274640.2%50.5%
A01Nimzovich-Larsen attack, symmetrical variation59740.4%49.2%
A02Bird's opening283736.3%48.8%
A02Bird's opening, Swiss gambit250.0%75.0%
A02Bird, From gambit14834.5%50.3%
A02Bird, From gambit, Lasker variation2955.2%58.6%
A02Bird, From gambit, Lipke variation10.0%0.0%
A02Bird, Hobbs gambit560.0%70.0%
A03Bird's opening290636.0%47.8%
A03Bird's opening, Lasker variation8428.6%42.9%
A03Bird's opening, Williams gambit2334.8%65.2%
A03Mujannah opening450.0%25.0%
A04Reti opening693638.0%54.3%
A04Reti v Dutch91334.6%58.8%
A04Reti, Herrstroem gambit20.0%100.0%
A04Reti, Lisitsin gambit deferred1816.7%75.0%
A04Reti, Pirc-Lisitsin gambit12129.8%49.6%
A04Reti, Wade defence20.0%50.0%
A05Reti opening300737.2%53.5%
A05Reti, King's Indian attack109540.5%53.4%
A05Reti, King's Indian attack, Reti-Smyslov variation5139.2%56.9%
A05Reti, King's Indian attack, Spassky's variation27741.9%52.3%
A06Reti opening56437.2%53.4%
A06Reti, Nimzovich-Larsen attack282341.1%49.7%
A06Reti, old Indian attack8924.7%48.3%
A06Santasiere's folly10840.7%41.7%
A06Tennison (Lemberg, Zukertort) gambit1656.3%40.6%
A07Reti, King's Indian attack211242.4%53.2%
A07Reti, King's Indian attack (Barcza system)399341.4%53.7%
A07Reti, King's Indian attack (with ...c5)16341.1%50.0%
A07Reti, King's Indian attack, Keres variation64134.8%54.4%
A07Reti, King's Indian attack, Pachman system10737.4%53.3%
A07Reti, King's Indian attack, Yugoslav variation158740.3%52.8%
A08Reti, King's Indian attack50341.9%52.2%
A08Reti, King's Indian attack, French variation25137.8%48.0%
A09Reti accepted22340.4%52.5%
A09Reti accepted, Keres variation4032.5%68.8%
A09Reti opening50040.4%53.0%
A09Reti, advance variation68740.3%49.3%
A10English opening238437.6%55.0%
A10English, Adorjan defence36838.3%54.5%
A10English, Anglo-Dutch defense61133.2%52.9%
A10English, Jaenisch gambit20.0%100.0%
A11English, Caro-Kann defensive system118640.2%53.9%
A12English, Bled variation1643.8%59.4%
A12English, Capablanca's variation6835.3%47.1%
A12English, Caro-Kann defensive system16738.3%49.1%
A12English, Caro-Kann defensive system, Bogolyubov variation8048.8%53.1%
A12English, London defensive system12241.8%51.2%
A12English, New York (London) defensive system3452.9%44.1%
A12English, Torre defensive system3842.1%57.9%
A13English opening177636.7%51.7%
A13English opening, Agincourt variation114640.1%54.2%
A13English, Kurajica defence6330.2%59.5%
A13English, Neo-Catalan67640.7%52.9%
A13English, Neo-Catalan accepted104545.6%56.7%
A13English, Romanishin gambit24641.1%56.3%
A13English, Wimpey system10642.5%51.4%
A14English, Neo-Catalan declined76243.6%54.2%
A14English, Symmetrical, Keres defence50247.2%57.1%
A15English opening976642.7%53.5%
A15English, 1...Nf6 (Anglo-Indian defense)103639.6%55.1%
A16English opening121335.9%53.1%
A16English, Anglo-Gruenfeld defense21541.9%53.0%
A16English, Anglo-Gruenfeld defense, Korchnoi variation8836.4%58.0%
A16English, Anglo-Gruenfeld, Czech defense15633.3%63.5%
A16English, Anglo-Gruenfeld, Smyslov defense15232.2%54.9%
A17English opening21137.9%53.6%
A17English, Nimzo-English opening161839.6%53.5%
A17English, Queens Indian formation21236.8%59.9%
A17English, Queens Indian, Romanishin variation5628.6%58.9%
A18English, Mikenas-Carls variation9245.7%57.6%
A18English, Mikenas-Carls, Flohr variation28537.5%59.8%
A18English, Mikenas-Carls, Kevitz variation2025.0%47.5%
A19English, Mikenas-Carls, Sicilian variation32242.5%54.2%
A20English opening507138.1%54.5%
A20English, Nimzovich variation6439.1%57.0%
A20English, Nimzovich, Flohr variation13538.5%42.2%
A21English opening130633.1%54.5%
A21English, Keres variation1030.0%45.0%
A21English, Kramnik-Shirov counterattack175041.0%52.5%
A21English, Smyslov defence3630.6%59.7%
A21English, Troeger defence12030.0%53.3%
A22English opening68736.8%50.7%
A22English, Bellon gambit1136.4%63.6%
A22English, Bremen, Smyslov system140538.7%48.7%
A22English, Bremen, reverse dragon61940.7%50.4%
A22English, Carls' Bremen system33339.9%54.2%
A23English, Bremen system, Keres variation53140.7%48.2%
A24English, Bremen system with ...g614441.7%48.6%
A25English, Sicilian reversed66633.6%52.0%
A25English, closed system71434.5%53.8%
A25English, closed system (without ...d6)11728.2%55.1%
A25English, closed, 5.Rb140939.9%52.2%
A25English, closed, 5.Rb1 Taimanov variation20.0%50.0%
A25English, closed, Hort variation3636.1%54.2%
A25English, closed, Taimanov variation2010.0%65.0%
A26English, Botvinnik system29237.7%52.4%
A26English, closed system28537.5%52.1%
A27English, three knights system46134.7%53.1%
A28English, Bradley Beach variation5221.2%37.5%
A28English, Nenarokov variation12040.0%51.7%
A28English, four knights system33844.1%51.0%
A28English, four knights, 4.e393936.2%52.0%
A28English, four knights, Capablanca variation40337.5%55.2%
A28English, four knights, Marini variation75339.6%51.1%
A28English, four knights, Nimzovich variation45834.3%54.0%
A28English, four knights, Romanishin variation42850.5%52.8%
A28English, four knights, Stean variation8342.2%59.6%
A29English, four knights, kingside fianchetto583941.0%51.8%
A30English, symmetrical variation277039.5%54.4%
A30English, symmetrical, hedgehog system252746.7%55.7%
A30English, symmetrical, hedgehog, flexible formation17643.2%54.5%
A31English, symmetrical, Benoni formation83640.4%55.7%
A32English, symmetrical variation32442.0%58.0%
A33English, symmetrical variation140048.4%54.4%
A33English, symmetrical, Geller variation57838.9%54.2%
A34English, symmetrical variation88139.2%54.1%
A34English, symmetrical, Rubinstein system36339.1%52.6%
A34English, symmetrical, three knights system107341.5%55.1%
A35English, symmetrical variation20834.6%51.9%
A35English, symmetrical, four knights system193243.7%53.6%
A36English, symmetrical variation10636.8%56.1%
A36English, symmetrical, Botvinnik system15133.8%52.0%
A36English, symmetrical, Botvinnik system reversed6136.1%55.7%
A36English, ultra-symmetrical variation116638.4%53.0%
A37English, symmetrical variation88640.6%50.1%
A37English, symmetrical, Botvinnik system reversed68137.3%50.7%
A38English, symmetrical variation50245.2%55.5%
A38English, symmetrical, main line with b31100.0%50.0%
A38English, symmetrical, main line with d313048.5%52.7%
A39English, symmetrical, main line with d440741.8%57.5%
A40Beefeater defence3321.2%68.2%
A40Modern defence79537.2%58.0%
A40Polish defence5046.0%51.0%
A40Queen's pawn193837.0%55.3%
A40Queen's pawn, Charlick (Englund) gambit2045.0%62.5%
A40Queen's pawn, English defence16141.0%63.4%
A40Queen's pawn, Franco-Indian (Keres) defence85237.9%55.8%
A40Queen's pawn, Keres defence152744.0%56.6%
A40Queen's pawn, Lundin (Kevitz-Mikenas) defence14930.9%59.1%
A41Modern defence6434.4%56.3%
A41Old Indian defence62731.6%54.4%
A41Old Indian, Tartakower (Wade) variation81934.7%61.3%
A41Queen's Pawn183035.7%54.2%
A41Robatsch defence, Rossolimo variation11136.0%50.5%
A42Modern defence, Averbakh system35432.8%58.5%
A42Modern defence, Averbakh system, Kotov variation10324.3%64.6%
A42Modern defence, Averbakh system, Randspringer variation90.0%77.8%
A42Pterodactyl defence32036.9%63.8%
A43Hawk (Habichd) defence366.7%33.3%
A43Old Benoni defence128835.3%59.2%
A43Old Benoni, Franco-Benoni defence9036.7%58.3%
A43Old Benoni, Mujannah formation3138.7%67.7%
A43Old Benoni, Schmid's system2317.4%56.5%
A44Old Benoni defence1643.8%65.6%
A44Semi-Benoni (`blockade variation')8631.4%62.2%
A45Blackmar-Diemer gambit15930.2%48.4%
A45Canard opening1136.4%27.3%
A45Paleface attack3234.4%45.3%
A45Queen's pawn game179239.2%53.9%
A45Queen's pawn, Bronstein gambit1030.0%55.0%
A45Trompovsky attack (Ruth, Opovcensky opening)332935.6%52.1%
A46Queen's pawn game262540.5%54.9%
A46Queen's pawn, Torre attack117936.5%51.7%
A46Queen's pawn, Torre attack, Wagner gambit333.3%83.3%
A46Queen's pawn, Yusupov-Rubinstein system68240.8%52.3%
A47Queen's Indian defence44038.6%52.3%
A47Queen's Indian, Marienbad system6735.8%53.7%
A47Queen's Indian, Marienbad system, Berg variation1250.0%58.3%
A48King's Indian, East Indian defence74438.7%51.3%
A48King's Indian, London system94839.2%53.4%
A48King's Indian, Torre attack145038.9%49.4%
A49King's Indian, fianchetto without c497140.8%56.5%
A50Kevitz-Trajkovich defence29338.2%58.0%
A50Queen's Indian accelerated14146.1%57.1%
A50Queen's pawn game53337.5%55.3%
A51Budapest defence declined742.9%64.3%
A51Budapest, Fajarowicz variation3525.7%61.4%
A51Budapest, Fajarowicz, Steiner variation366.7%33.3%
A52Budapest defence2050.0%55.0%
A52Budapest, Adler variation14347.6%55.2%
A52Budapest, Alekhine variation1323.1%65.4%
A52Budapest, Alekhine variation, Balogh gambit1100.0%50.0%
A52Budapest, Alekhine, Abonyi variation5626.8%61.6%
A52Budapest, Rubinstein variation34340.2%60.3%
A53Old Indian defence85639.0%56.0%
A53Old Indian, Janowski variation10831.5%56.5%
A54Old Indian, Dus-Khotimirsky variation728.6%42.9%
A54Old Indian, Ukrainian variation8251.2%56.1%
A54Old Indian, Ukrainian variation, 4.Nf318336.6%57.7%
A55Old Indian, main line39638.1%58.2%
A56Benoni defence55933.8%58.9%
A56Benoni defence, Hromodka system37223.9%65.7%
A56Czech Benoni defence26927.9%68.2%
A56Czech Benoni, King's Indian system3611.1%66.7%
A56Vulture defence1100.0%50.0%
A57Benko gambit59336.8%56.3%
A57Benko gambit half accepted76139.8%57.2%
A57Benko gambit, Zaitsev system6839.7%46.3%
A58Benko gambit accepted63233.1%58.9%
A58Benko gambit, Nd2 variation837.5%56.3%
A58Benko gambit, fianchetto variation14143.3%62.1%
A59Benko gambit3743.2%62.2%
A59Benko gambit, 7.e4633.3%50.0%
A59Benko gambit, Ne2 variation30.0%33.3%
A59Benko gambit, main line11641.4%66.4%
A60Benoni defence10725.2%64.0%
A61Benoni defence45931.6%62.9%
A61Benoni, Nimzovich (knight's tour) variation34228.4%59.2%
A61Benoni, Uhlmann variation19222.4%39.3%
A61Benoni, fianchetto variation1414.3%78.6%
A62Benoni, fianchetto variation66935.0%56.2%
A63Benoni, fianchetto, 9...Nbd77034.3%64.3%
A64Benoni, fianchetto, 11...Re810540.0%41.9%
A65Benoni, 6.e429325.9%56.0%
A66Benoni, Mikenas variation1723.5%47.1%
A66Benoni, pawn storm variation540.0%60.0%
A67Benoni, Taimanov variation19924.6%62.6%
A68Benoni, four pawns attack7135.2%55.6%
A69Benoni, four pawns attack, main line7639.5%46.1%
A70Benoni, classical with e4 and Nf353339.2%59.2%
A70Benoni, classical without 9.O-O425.0%37.5%
A71Benoni, classical, 8.Bg58728.7%54.6%
A72Benoni, classical without 9.O-O4641.3%62.0%
A73Benoni, classical, 9.O-O4827.1%57.3%
A74Benoni, classical, 9...a6, 10.a41942.1%73.7%
A75Benoni, classical with ...a6 and 10...Bg44725.5%72.3%
A76Benoni, classical, 9...Re88837.5%65.3%
A77Benoni, classical, 9...Re8, 10.Nd211825.4%67.8%
A78Benoni, classical with ...Re8 and ...Na63638.9%58.3%
A79Benoni, classical, 11.f35228.8%58.7%
A80Dutch174435.4%54.4%
A80Dutch, 2.Bg5 variation77133.1%54.0%
A80Dutch, Korchnoi attack837.5%43.8%
A80Dutch, Krejcik gambit26534.3%54.2%
A80Dutch, Manhattan (Alapin, Ulvestad) variation1741.2%61.8%
A81Dutch defence292738.4%56.9%
A81Dutch defence, Blackburne variation4528.9%52.2%
A81Dutch, Leningrad, Basman system450.0%75.0%
A81Dutch, Leningrad, Karlsbad variation475.0%62.5%
A82Dutch, Balogh defence633.3%83.3%
A82Dutch, Staunton gambit10135.6%34.7%
A82Dutch, Staunton gambit, Tartakower variation616.7%41.7%
A83Dutch, Staunton gambit, Alekhine variation250.0%25.0%
A83Dutch, Staunton gambit, Chigorin variation6933.3%52.9%
A83Dutch, Staunton gambit, Lasker variation1145.5%40.9%
A83Dutch, Staunton gambit, Nimzovich variation20.0%0.0%
A83Dutch, Staunton gambit, Staunton's line11536.5%50.4%
A84Dutch defence50839.4%55.5%
A84Dutch defence, Rubinstein variation25333.6%59.1%
A84Dutch, Staunton gambit deferred955.6%27.8%
A85Dutch with c4 & Nc357535.5%54.6%
A86Dutch with c4 & g38138.3%66.0%
A86Dutch, Hort-Antoshin system2100.0%50.0%
A86Dutch, Leningrad variation13234.8%56.1%
A87Dutch, Leningrad, main variation30040.3%54.5%
A88Dutch, Leningrad, main variation with c678538.5%57.2%
A89Dutch, Leningrad, main variation with Nc633536.7%63.4%
A90Dutch defence92839.1%61.2%
A90Dutch defence, Dutch-Indian (Nimzo-Dutch) variation17935.8%60.9%
A90Dutch-Indian, Alekhine variation4136.6%54.9%
A91Dutch defence8433.3%52.4%
A92Dutch defence4452.3%58.0%
A92Dutch defence, Alekhine variation3540.0%62.9%
A92Dutch, stonewall variation6048.3%57.5%
A92Dutch, stonewall with Nc31030.0%45.0%
A93Dutch, stonewall, Botwinnik variation8529.4%59.4%
A94Dutch, stonewall with Ba34151.2%57.3%
A95Dutch, stonewall with Nc320529.3%58.5%
A95Dutch, stonewall: Chekhover variation1100.0%50.0%
A96Dutch, classical variation17035.9%62.1%
A97Dutch, Ilyin-Genevsky variation2218.2%54.5%
A97Dutch, Ilyin-Genevsky, Winter variation6541.5%63.8%
A98Dutch, Ilyin-Genevsky variation with Qc23429.4%52.9%
A99Dutch, Ilyin-Genevsky variation with b38035.0%65.0%
B00Carr's defence450.0%50.0%
B00Corn stalk defence250.0%25.0%
B00KP, Colorado counter20.0%50.0%
B00KP, Nimzovich defence41533.3%61.2%
B00KP, Nimzovich defence, Bogolyubov variation8830.7%58.5%
B00King's pawn opening119936.9%57.4%
B00Lemming defence837.5%56.3%
B00Owen defence26933.1%61.5%
B00Reversed Grob (Borg/Basman defence/macho Grob)1631.3%84.4%
B00St. George (Baker) defence3839.5%59.2%
B01Scandinavian (centre counter) defence239241.7%57.0%
B01Scandinavian defence78040.9%57.9%
B01Scandinavian defence, Gruenfeld variation40.0%75.0%
B01Scandinavian defence, Lasker variation11332.7%65.0%
B01Scandinavian gambit13941.7%52.5%
B01Scandinavian, Anderssen counter-attack orthodox attack10.0%100.0%
B01Scandinavian, Anderssen counter-attack, Collijn variation10.0%100.0%
B01Scandinavian, Icelandic gambit5448.1%55.6%
B01Scandinavian, Kiel variation728.6%85.7%
B01Scandinavian, Marshall variation52044.4%60.1%
B01Scandinavian, Mieses-Kotrvc gambit862.5%43.8%
B01Scandinavian, Pytel-Wade variation250744.4%58.0%
B01Scandinavian, Richter variation250.0%75.0%
B02Alekhine's defence52035.8%55.0%
B02Alekhine's defence, Brooklyn defence714.3%35.7%
B02Alekhine's defence, Kmoch variation714.3%21.4%
B02Alekhine's defence, Krejcik variation250.0%25.0%
B02Alekhine's defence, Maroczy variation8636.0%57.6%
B02Alekhine's defence, Saemisch attack24538.0%48.8%
B02Alekhine's defence, Scandinavian variation14136.9%56.7%
B02Alekhine's defence, Spielmann variation1435.7%46.4%
B02Alekhine's defence, Steiner variation944.4%55.6%
B02Alekhine's defence, Two pawns' (Lasker's) attack26644.4%54.9%
B03Alekhine's defence7931.6%63.9%
B03Alekhine's defence, Balogh variation825.0%75.0%
B03Alekhine's defence, exchange variation56339.3%58.3%
B03Alekhine's defence, exchange, Karpov variation650.0%58.3%
B03Alekhine's defence, four pawns attack22531.6%65.6%
B03Alekhine's defence, four pawns attack, 6...Nc61225.0%45.8%
B03Alekhine's defence, four pawns attack, 7.Be310735.5%67.3%
B03Alekhine's defence, four pawns attack, Ilyin-Genevsky var.742.9%21.4%
B03Alekhine's defence, four pawns attack, Planinc variation333.3%50.0%
B03Alekhine's defence, four pawns attack, Trifunovic variation5735.1%68.4%
B03Alekhine's defence, four pawns attack, fianchetto variation10731.8%57.9%
B04Alekhine's defence, modern variation22333.6%61.2%
B04Alekhine's defence, modern, Keres variation4434.1%71.6%
B04Alekhine's defence, modern, Larsen variation75641.9%60.6%
B04Alekhine's defence, modern, Schmid variation14438.2%61.5%
B04Alekhine's defence, modern, fianchetto variation61934.4%57.8%
B05Alekhine's defence, modern variation, 4...Bg456332.3%65.2%
B05Alekhine's defence, modern, Alekhine variation742.9%50.0%
B05Alekhine's defence, modern, Flohr variation9436.2%63.8%
B05Alekhine's defence, modern, Panov variation911.1%50.0%
B05Alekhine's defence, modern, Vitolins attack450.0%50.0%
B06Robatsch (modern) defence495136.3%56.6%
B06Robatsch defence57736.6%58.5%
B06Robatsch defence, Gurgenidze variation4837.5%58.3%
B06Robatsch defence, Pseudo-Austrian attack44234.2%55.3%
B06Robatsch defence, Two knights variation30033.3%62.3%
B06Robatsch defence, Two knights, Suttles variation97538.3%58.4%
B06Robatsch defence, three pawns attack13531.1%63.7%
B07Pirc defence146137.7%56.7%
B07Pirc, 150 attack22237.4%61.0%
B07Pirc, Byrne variation31732.5%57.3%
B07Pirc, Chinese variation250.0%25.0%
B07Pirc, Holmov system1844.4%61.1%
B07Pirc, Sveshnikov system28434.5%52.8%
B07Pirc, Ufimtsev-Pytel variation32538.8%59.7%
B07Pirc, bayonet (Mariotti) attack2755.6%57.4%
B07Robatsch defence, Geller's system56537.2%57.0%
B08Pirc, classical (two knights) system46737.0%57.7%
B08Pirc, classical system, 5.Be2212738.6%56.9%
B08Pirc, classical, h3 system37238.4%59.3%
B09Pirc, Austrian attack16740.7%59.9%
B09Pirc, Austrian attack, 6.Bd3107639.7%59.9%
B09Pirc, Austrian attack, 6.Be326532.1%58.3%
B09Pirc, Austrian attack, 6.e58543.5%57.1%
B09Pirc, Austrian attack, Ljubojevic variation1442.9%50.0%
B09Pirc, Austrian attack, dragon formation74438.8%58.5%
B10Caro-Kann defence194435.8%53.0%
B10Caro-Kann, Goldman (Spielmann) variation4742.6%48.9%
B10Caro-Kann, Hillbilly attack20.0%50.0%
B10Caro-Kann, Two knights variation27937.3%60.2%
B10Caro-Kann, anti-Caro-Kann defence50133.3%60.2%
B10Caro-Kann, anti-anti-Caro-Kann defence126648.6%52.3%
B10Caro-Kann, closed (Breyer) variation58438.5%52.1%
B11Caro-Kann, Two knights, 3...Bg472639.3%55.7%
B12Caro-Kann defence18436.4%51.9%
B12Caro-Kann, 3.Nd213942.4%58.6%
B12Caro-Kann, Edinburgh variation2740.7%57.4%
B12Caro-Kann, Tartakower (fantasy) variation54337.4%54.4%
B12Caro-Kann, advance variation918838.1%56.3%
B12Caro-Kann, advance, Short variation4833.3%52.1%
B12Caro-Masi defence1100.0%50.0%
B12de Bruycker defence520.0%70.0%
B13Caro-Kann, Panov-Botvinnik attack93447.8%53.1%
B13Caro-Kann, Panov-Botvinnik, Czerniak variation2630.8%50.0%
B13Caro-Kann, Panov-Botvinnik, Gunderam attack1118.2%54.5%
B13Caro-Kann, Panov-Botvinnik, Herzog defence1435.7%46.4%
B13Caro-Kann, Panov-Botvinnik, Reifir (Spielmann) variation10.0%100.0%
B13Caro-Kann, Panov-Botvinnik, normal variation8650.0%56.4%
B13Caro-Kann, exchange variation73140.2%52.0%
B13Caro-Kann, exchange, Rubinstein variation12135.5%52.5%
B14Caro-Kann, Panov-Botvinnik attack, 5...e6170346.3%55.5%
B14Caro-Kann, Panov-Botvinnik attack, 5...g629549.8%53.7%
B15Caro-Kann defence21132.2%51.7%
B15Caro-Kann, Alekhine gambit2339.1%50.0%
B15Caro-Kann, Forgacs variation20841.3%55.3%
B15Caro-Kann, Gurgenidze counter-attack366.7%66.7%
B15Caro-Kann, Gurgenidze system28939.1%57.3%
B15Caro-Kann, Rasa-Studier gambit911.1%38.9%
B15Caro-Kann, Tartakower (Nimzovich) variation29541.0%55.1%
B16Caro-Kann, Bronstein-Larsen variation43831.3%62.2%
B17Caro-Kann, Steinitz variation356542.8%53.7%
B18Caro-Kann, classical variation142945.0%54.3%
B18Caro-Kann, classical, 6.h448540.8%54.6%
B18Caro-Kann, classical, Flohr variation7458.1%48.0%
B18Caro-Kann, classical, Maroczy attack1020.0%40.0%
B19Caro-Kann, classical, 7...Nd736850.8%52.9%
B19Caro-Kann, classical, Spassky variation260239.5%56.7%
B20Sicilian defence189035.9%50.6%
B20Sicilian, Keres variation (2.Ne2)56440.8%52.5%
B20Sicilian, Steinitz variation33444.0%49.9%
B20Sicilian, wing gambit5750.9%41.2%
B20Sicilian, wing gambit, Carlsbad variation944.4%44.4%
B20Sicilian, wing gambit, Marshall variation6129.5%55.7%
B21Sicilian, Andreaschek gambit1442.9%57.1%
B21Sicilian, Grand Prix attack141835.8%52.5%
B21Sicilian, Smith-Morra gambit66741.1%47.5%
B22Sicilian, 2.c3, Heidenfeld variation5726.3%44.7%
B22Sicilian, Alapin's variation (2.c3)552043.6%54.5%
B23Sicilian, Grand Prix attack63535.7%49.5%
B23Sicilian, Grand Prix attack, Schofman variation15040.7%53.0%
B23Sicilian, chameleon variation52435.1%58.4%
B23Sicilian, closed273338.4%51.5%
B23Sicilian, closed, 2...Nc6157341.4%52.0%
B23Sicilian, closed, Korchnoi variation11354.9%51.3%
B24Sicilian, closed37436.9%48.9%
B24Sicilian, closed, Smyslov variation2133.3%54.8%
B25Sicilian, closed21937.4%48.9%
B25Sicilian, closed, 6.Ne2 e5 (Botvinnik)3729.7%50.0%
B25Sicilian, closed, 6.f439640.7%50.9%
B25Sicilian, closed, 6.f4 e5 (Botvinnik)2646.2%53.8%
B26Sicilian, closed, 6.Be355632.9%49.6%
B27Sicilian defence1631.3%53.1%
B27Sicilian, Hungarian variation321941.0%57.7%
B27Sicilian, Katalimov variation12646.0%61.9%
B27Sicilian, Quinteros variation3537.1%64.3%
B28Sicilian, O'Kelly variation28038.9%55.2%
B29Sicilian, Nimzovich-Rubinstein variation61440.6%60.0%
B29Sicilian, Nimzovich-Rubinstein; Rubinstein counter-gambit3056.7%45.0%
B30Sicilian defence233240.8%54.5%
B30Sicilian, Nimzovich-Rossolimo attack (without ...d6)392837.7%56.1%
B31Sicilian, Nimzovich-Rossolimo attack (with ...g6, without ...d6)250941.2%55.9%
B31Sicilian, Nimzovich-Rossolimo attack, Gurgenidze variation2152.4%54.8%
B32Sicilian defence73838.5%56.2%
B32Sicilian, Flohr variation20532.2%61.0%
B32Sicilian, Labourdonnais-Loewenthal (Kalashnikov) variation108639.7%56.7%
B32Sicilian, Labourdonnais-Loewenthal variation20641.7%59.7%
B32Sicilian, Nimzovich variation2339.1%54.3%
B33Sicilian defence40434.9%53.8%
B33Sicilian, Pelikan (Lasker/Sveshnikov) variation90135.1%55.6%
B33Sicilian, Pelikan, Bird variation22138.0%64.3%
B33Sicilian, Pelikan, Chelyabinsk variation201035.7%57.3%
B33Sicilian, Sveshnikov variation130238.6%50.9%
B34Sicilian, accelerated fianchetto, exchange variation1747.1%70.6%
B34Sicilian, accelerated fianchetto, modern variation30836.0%52.4%
B35Sicilian, accelerated fianchetto, modern variation with Bc4185643.2%52.9%
B36Sicilian, accelerated fianchetto, Gurgenidze variation24344.0%60.3%
B36Sicilian, accelerated fianchetto, Maroczy bind87945.1%58.0%
B37Sicilian, accelerated fianchetto, Maroczy bind, 5...Bg712047.5%56.3%
B37Sicilian, accelerated fianchetto, Simagin variation2100.0%50.0%
B38Sicilian, accelerated fianchetto, Maroczy bind, 6.Be3105744.3%57.4%
B39Sicilian, accelerated fianchetto, Breyer variation59340.8%58.0%
B40Sicilian defence442539.1%54.1%
B40Sicilian, Anderssen variation69940.8%58.2%
B40Sicilian, Marshall variation10.0%100.0%
B40Sicilian, Pin variation (Sicilian counter-attack)1346.2%69.2%
B40Sicilian, Pin, Koch variation3625.0%79.2%
B41Sicilian, Kan variation19640.3%54.8%
B41Sicilian, Kan, Maroczy bind (Reti variation)41536.1%57.6%
B41Sicilian, Kan, Maroczy bind - Bronstein variation1936.8%28.9%
B42Sicilian, Kan, 5.Bd3164436.9%58.0%
B42Sicilian, Kan, Gipslis variation7839.7%63.5%
B42Sicilian, Kan, Polugaievsky variation123536.1%54.3%
B42Sicilian, Kan, Swiss cheese variation25135.5%61.6%
B43Sicilian, Kan, 5.Nc3257538.8%56.5%
B44Sicilian defence30443.1%52.1%
B44Sicilian, Szen (`anti-Taimanov') variation76439.1%54.3%
B44Sicilian, Szen variation, Dely-Kasparov gambit1957.9%60.5%
B44Sicilian, Szen, hedgehog variation22639.8%50.9%
B45Sicilian, Taimanov variation175838.0%56.8%
B45Sicilian, Taimanov, American attack1741.2%44.1%
B46Sicilian, Taimanov variation297638.3%55.0%
B47Sicilian, Taimanov (Bastrikov) variation359441.4%54.2%
B48Sicilian, Taimanov variation297937.1%55.9%
B49Sicilian, Taimanov variation58844.7%58.2%
B50Sicilian325940.9%53.0%
B50Sicilian, wing gambit deferred2123.8%35.7%
B51Sicilian, Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack144539.0%55.7%
B52Sicilian, Canal-Sokolsky attack, 3...Bd7151542.8%49.8%
B52Sicilian, Canal-Sokolsky attack, Bronstein gambit19139.8%57.6%
B52Sicilian, Canal-Sokolsky attack, Sokolsky variation74543.6%55.6%
B53Sicilian, Chekhover variation103042.1%49.5%
B53Sicilian, Chekhover, Zaitsev variation4221.4%58.3%
B54Sicilian62337.9%55.2%
B54Sicilian, Prins (Moscow) variation37236.8%55.8%
B55Sicilian, Prins variation, Venice attack3641.7%51.4%
B56Sicilian143839.7%53.3%
B56Sicilian, Venice attack5137.3%63.7%
B57Sicilian, Magnus Smith trap1050.0%35.0%
B57Sicilian, Sozin, Benko variation125239.1%51.7%
B57Sicilian, Sozin, not Scheveningen21441.1%56.1%
B58Sicilian, Boleslavsky variation42736.8%47.9%
B58Sicilian, Boleslavsky, Louma variation4535.6%57.8%
B58Sicilian, classical20145.3%46.5%
B59Sicilian, Boleslavsky variation, 7.Nb311947.1%52.1%
B60Sicilian, Richter-Rauzer57235.1%57.8%
B60Sicilian, Richter-Rauzer, Bondarevsky variation2552.0%58.0%
B60Sicilian, Richter-Rauzer, Larsen variation13030.8%60.8%
B61Sicilian, Richter-Rauzer, Larsen variation, 7.Qd238137.0%60.8%
B62Sicilian, Richter-Rauzer, 6...e64337.2%58.1%
B62Sicilian, Richter-Rauzer, Keres variation6131.1%51.6%
B62Sicilian, Richter-Rauzer, Margate (Alekhine) variation4634.8%52.2%
B62Sicilian, Richter-Rauzer, Podvebrady variation1656.3%34.4%
B62Sicilian, Richter-Rauzer, Richter attack10.0%100.0%
B63Sicilian, Richter-Rauzer, Rauzer attack13336.8%57.5%
B63Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7107337.1%55.8%
B64Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9.f425338.3%54.0%
B64Sicilian, Richter-Rauzer, Rauzer attack, Geller variation1136.4%63.6%
B65Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9...Nxd451140.5%55.9%
B66Sicilian, Richter-Rauzer, Rauzer attack, 7...a6559233.7%51.4%
B67Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 8...Bd7263233.4%55.6%
B68Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 9...Be79931.3%58.1%
B69Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 11.Bxf67532.0%61.3%
B70Sicilian, dragon variation66241.2%51.7%
B71Sicilian, dragon, Levenfish variation3630.6%56.9%
B71Sicilian, dragon, Levenfish; Flohr variation450.0%50.0%
B72Sicilian, dragon, 6.Be38134.6%54.3%
B72Sicilian, dragon, classical attack8038.8%51.9%
B72Sicilian, dragon, classical, Amsterdam variation4124.4%48.8%
B72Sicilian, dragon, classical, Grigoriev variation2445.8%52.1%
B72Sicilian, dragon, classical, Nottingham variation1844.4%55.6%
B73Sicilian, dragon, classical, 8.O-O34444.5%51.9%
B73Sicilian, dragon, classical, Richter variation10043.0%57.5%
B73Sicilian, dragon, classical, Zollner gambit837.5%43.8%
B74Sicilian, dragon, classical, 9.Nb334652.3%47.5%
B74Sicilian, dragon, classical, Alekhine variation2347.8%67.4%
B74Sicilian, dragon, classical, Reti-Tartakower variation8144.4%55.6%
B74Sicilian, dragon, classical, Spielmann variation837.5%56.3%
B75Sicilian, dragon, Yugoslav attack23730.0%57.2%
B76Sicilian, dragon, Yugoslav attack, 7...O-O29134.7%52.1%
B76Sicilian, dragon, Yugoslav attack, Rauser variation88433.3%64.8%
B77Sicilian, dragon, Yugoslav attack, 9...Bd719742.6%55.8%
B77Sicilian, dragon, Yugoslav attack, 9.Bc410333.0%49.5%
B78Sicilian, dragon, Yugoslav attack, 10.O-O-O29628.4%55.4%
B79Sicilian, dragon, Yugoslav attack, 12.h41030.0%65.0%
B80Sicilian, Scheveningen variation118630.9%54.4%
B80Sicilian, Scheveningen, English variation13732.1%51.8%
B80Sicilian, Scheveningen, Vitolins variation4746.8%51.1%
B80Sicilian, Scheveningen, fianchetto variation17133.9%51.5%
B81Sicilian, Scheveningen, Keres attack215934.4%59.5%
B82Sicilian, Scheveningen, 6.f443932.1%57.3%
B82Sicilian, Scheveningen, Tal variation9835.7%59.7%
B83Sicilian, Scheveningen, 6.Be251939.7%52.8%
B83Sicilian, modern Scheveningen40542.5%47.7%
B83Sicilian, modern Scheveningen, main line49344.2%53.8%
B83Sicilian, modern Scheveningen, main line with Nb38636.0%57.6%
B84Sicilian, Scheveningen (Paulsen), classical variation350538.6%51.8%
B84Sicilian, Scheveningen, classical, Nd7 system6334.9%49.2%
B85Sicilian, Scheveningen, classical13040.8%51.9%
B85Sicilian, Scheveningen, classical main line34046.8%55.4%
B85Sicilian, Scheveningen, classical variation with ...Qc7 and ...Nc6366.7%66.7%
B85Sicilian, Scheveningen, classical, Maroczy system2536.0%54.0%
B86Sicilian, Sozin attack14940.9%54.0%
B87Sicilian, Sozin with ...a6 and ...b573936.5%51.2%
B88Sicilian, Sozin, Fischer variation1346.2%53.8%
B88Sicilian, Sozin, Leonhardt variation49140.9%54.7%
B89Sicilian, Sozin, 7.Be397236.6%50.3%
B89Sicilian, Velimirovic attack70333.4%51.3%
B90Sicilian, Najdorf244636.6%53.5%
B90Sicilian, Najdorf, Adams attack101237.7%51.4%
B90Sicilian, Najdorf, Byrne (English) attack1837435.2%53.2%
B90Sicilian, Najdorf, Lipnitzky attack88135.6%49.9%
B91Sicilian, Najdorf, Zagreb (fianchetto) variation60038.0%54.0%
B92Sicilian, Najdorf, Opovcensky variation482540.1%53.1%
B93Sicilian, Najdorf, 6.f4152239.9%50.6%
B94Sicilian, Najdorf, 6.Bg568935.8%53.0%
B95Sicilian, Najdorf, 6...e698738.8%49.5%
B96Sicilian, Najdorf, 7.f4117133.9%51.3%
B96Sicilian, Najdorf, Polugayevsky variation9137.4%53.8%
B96Sicilian, Najdorf, Polugayevsky, Simagin variation3122.6%56.5%
B97Sicilian, Najdorf, 7...Qb6143833.0%46.2%
B97Sicilian, Najdorf, Poisoned pawn variation106844.8%49.7%
B98Sicilian, Najdorf variation32730.0%57.8%
B98Sicilian, Najdorf, 7...Be712233.6%54.5%
B98Sicilian, Najdorf, Browne variation4228.6%61.9%
B98Sicilian, Najdorf, Goteborg (Argentine) variation2045.0%47.5%
B99Sicilian, Najdorf, 7...Be7 main line56929.2%53.4%
C00French defence47633.6%57.4%
C00French defence, Steiner variation68643.3%51.1%
C00French, Alapin variation475.0%62.5%
C00French, Chigorin variation69231.6%50.8%
C00French, King's Indian attack196537.8%51.0%
C00French, Labourdonnais variation21432.2%45.6%
C00French, Pelikan variation6435.9%52.3%
C00French, Reti (Spielmann) variation15441.6%51.3%
C00French, Reversed Philidor formation1136.4%63.6%
C00French, Schlechter variation17041.2%49.4%
C00French, Steinitz attack911.1%27.8%
C00French, Two knights variation19435.6%51.3%
C00French, Wing gambit2850.0%57.1%
C00Lengfellner system520.0%90.0%
C00St. George defence9246.7%64.7%
C01French, exchange variation123744.0%53.6%
C01French, exchange, Bogolyubov variation333.3%50.0%
C01French, exchange, Svenonius variation3339.4%56.1%
C02French, advance variation107232.7%55.8%
C02French, advance, Euwe variation123635.9%54.2%
C02French, advance, Milner-Barry gambit9634.4%46.4%
C02French, advance, Nimzovich system9431.9%44.7%
C02French, advance, Nimzovich variation560.0%50.0%
C02French, advance, Paulsen attack168733.5%54.7%
C02French, advance, Steinitz variation34033.2%53.1%
C02French, advance, Wade variation32239.4%56.7%
C03French, Tarrasch185844.8%56.9%
C03French, Tarrasch, Guimard variation5625.0%66.1%
C04French, Tarrasch, Guimard main line30729.0%59.4%
C05French, Tarrasch, Botvinnik variation4330.2%64.0%
C05French, Tarrasch, closed variation91431.7%60.1%
C06French, Tarrasch, Leningrad variation1717.6%85.3%
C06French, Tarrasch, closed variation, main line98337.7%59.5%
C07French, Tarrasch, Eliskases variation11146.8%53.2%
C07French, Tarrasch, open variation343347.7%53.5%
C08French, Tarrasch, open, 4.ed ed121150.3%54.5%
C09French, Tarrasch, open variation, main line101748.9%56.9%
C10French, Fort Knox variation58240.4%57.3%
C10French, Frere (Becker) variation1741.2%61.8%
C10French, Marshall variation250.0%25.0%
C10French, Paulsen variation57133.5%58.2%
C10French, Rubinstein variation203949.1%55.4%
C10French, Rubinstein, Capablanca line771.4%50.0%
C11French defence14740.8%54.4%
C11French, Burn variation485244.2%52.9%
C11French, Henneberger variation1338.5%50.0%
C11French, Steinitz variation92238.8%54.4%
C11French, Steinitz, Boleslavsky variation315935.1%57.5%
C11French, Steinitz, Bradford attack1100.0%50.0%
C11French, Steinitz, Gledhill attack11233.0%54.9%
C11French, Swiss variation4247.6%57.1%
C12French, MacCutcheon variation10842.6%50.0%
C12French, MacCutcheon, Bernstein variation1729.4%61.8%
C12French, MacCutcheon, Bogolyubov variation1100.0%50.0%
C12French, MacCutcheon, Chigorin variation6038.3%45.8%
C12French, MacCutcheon, Dr. Olland (Dutch) variation4825.0%66.7%
C12French, MacCutcheon, Duras variation425.0%62.5%
C12French, MacCutcheon, Grigoriev variation2138.1%57.1%
C12French, MacCutcheon, Janowski variation12836.7%57.4%
C12French, MacCutcheon, Lasker variation20327.6%59.1%
C12French, MacCutcheon, Lasker variation, 8...g636436.0%59.5%
C12French, MacCutcheon, Tartakower variation20.0%100.0%
C12French, MacCutcheon, advance variation1428.6%21.4%
C13French, Albin-Alekhine-Chatard attack23131.2%53.7%
C13French, Albin-Alekhine-Chatard attack, Breyer variation6839.7%65.4%
C13French, Albin-Alekhine-Chatard attack, Maroczy variation1233.3%66.7%
C13French, Albin-Alekhine-Chatard attack, Spielmann variation5742.1%70.2%
C13French, Albin-Alekhine-Chatard attack, Teichmann variation250.0%75.0%
C13French, classical2842.9%42.9%
C13French, classical, Anderssen variation1127.3%40.9%
C13French, classical, Anderssen-Richter variation825.0%50.0%
C13French, classical, Frankfurt variation837.5%81.3%
C13French, classical, Tartakower variation2236.4%45.5%
C13French, classical, Vistaneckis (Nimzovich) variation90.0%66.7%
C14French, classical variation425.0%12.5%
C14French, classical, Alapin variation8446.4%54.2%
C14French, classical, Pollock variation714.3%35.7%
C14French, classical, Rubinstein variation2737.0%55.6%
C14French, classical, Stahlberg variation650.0%58.3%
C14French, classical, Steinitz variation65735.0%57.8%
C14French, classical, Tarrasch variation70.0%57.1%
C15French, Winawer (Nimzovich) variation66241.1%55.7%
C15French, Winawer, Alekhine (Maroczy) gambit15336.6%54.9%
C15French, Winawer, Alekhine gambit20.0%50.0%
C15French, Winawer, Alekhine gambit, Kan variation4445.5%45.5%
C15French, Winawer, Kondratiyev variation1100.0%50.0%
C15French, Winawer, fingerslip variation3043.3%35.0%
C16French, Winawer, Petrosian variation18731.6%54.8%
C16French, Winawer, advance variation68134.5%57.6%
C17French, Winawer, advance variation5442.6%58.3%
C17French, Winawer, advance, 5.a333931.0%63.3%
C17French, Winawer, advance, Bogolyubov variation33439.2%51.0%
C17French, Winawer, advance, Rauzer variation837.5%68.8%
C17French, Winawer, advance, Russian variation5238.5%53.8%
C18French, Winawer, advance variation42526.8%63.1%
C18French, Winawer, classical variation26832.1%58.2%
C19French, Winawer, advance, 6...Ne725934.4%56.6%
C19French, Winawer, advance, Smyslov variation14727.2%61.2%
C19French, Winawer, advance, poisoned pawn variation239233.5%60.7%
C19French, Winawer, advance, poisoned pawn, Euwe-Gligoric variation30.0%33.3%
C19French, Winawer, advance, poisoned pawn, Konstantinopolsky variation52429.2%62.7%
C19French, Winawer, advance, positional main line99430.4%57.4%
C20Alapin's opening1729.4%67.6%
C20KP, Indian opening5633.9%43.8%
C20KP, King's head opening250.0%25.0%
C20KP, Lopez opening1233.3%33.3%
C20KP, Mengarini's opening2040.0%25.0%
C20KP, Napoleon's opening633.3%50.0%
C20KP, Patzer opening2227.3%31.8%
C20King's pawn game2236.4%54.5%
C21Centre game14343.4%58.0%
C21Danish gambit10941.3%47.2%
C21Danish gambit, Collijn defence475.0%37.5%
C21Danish gambit, Schlechter defence714.3%50.0%
C21Danish gambit, Soerensen defence2860.7%55.4%
C21Halasz gambit450.0%50.0%
C22Centre game39438.3%46.3%
C22Centre game, Berger variation35237.5%54.8%
C22Centre game, Charousek variation450.0%50.0%
C22Centre game, Hall variation540.0%40.0%
C22Centre game, Paulsen attack18137.0%51.7%
C23Bishop's opening15536.8%54.5%
C23Bishop's opening, Calabrese counter-gambit, Jaenisch variation30.0%100.0%
C23Bishop's opening, Classical variation4839.6%53.1%
C23Bishop's opening, Lisitsyn variation10.0%0.0%
C23Bishop's opening, Lopez gambit20.0%0.0%
C23Bishop's opening, MacDonnell double gambit250.0%25.0%
C23Bishop's opening, Philidor counter-attack14157.4%49.3%
C23Bishop's opening, Philidor variation944.4%55.6%
C24Bishop's opening, Berlin defence91741.8%53.9%
C24Bishop's opening, Ponziani gambit250.0%25.0%
C24Bishop's opening, Urusov gambit4126.8%37.8%
C25Vienna gambit2725.9%53.7%
C25Vienna game24334.2%60.7%
C25Vienna game, Max Lange defence2142.9%50.0%
C25Vienna, Paulsen variation7233.3%56.9%
C25Vienna, Pierce gambit757.1%57.1%
C25Vienna, Steinitz gambit10.0%0.0%
C26Vienna game23645.3%54.0%
C26Vienna, Falkbeer variation4344.2%54.7%
C26Vienna, Mengarini variation1060.0%40.0%
C26Vienna, Paulsen-Mieses variation38041.6%53.4%
C27Boden-Kieseritsky gambit4032.5%31.3%
C27Boden-Kieseritsky gambit, Lichtenhein defence560.0%30.0%
C27Vienna game9245.7%54.3%
C27Vienna, Alekhine variation1338.5%50.0%
C27Vienna, `Frankenstein-Dracula' variation10.0%100.0%
C28Vienna game33541.8%53.4%
C29Vienna gambit16639.2%46.1%
C29Vienna gambit, Bardeleben variation650.0%25.0%
C29Vienna gambit, Breyer variation8630.2%55.8%
C29Vienna gambit, Kaufmann variation837.5%68.8%
C29Vienna gambit, Paulsen attack580.0%60.0%
C29Vienna gambit, Steinitz variation540.0%40.0%
C29Vienna gambit, Wurzburger trap20.0%100.0%
C30KGD, 2...Nf62626.9%59.6%
C30KGD, Keene's defence560.0%70.0%
C30KGD, Mafia defence837.5%68.8%
C30KGD, Norwalde variation147.1%82.1%
C30KGD, classical counter-gambit10.0%0.0%
C30KGD, classical variation4427.3%59.1%
C30KGD, classical, 4.c32931.0%60.3%
C30KGD, classical, Marshall attack3100.0%50.0%
C30KGD, classical, Reti variation1100.0%50.0%
C30KGD, classical, Svenonius variation1100.0%50.0%
C30King's gambit7338.4%58.9%
C31KGD, Falkbeer counter-gambit2544.0%54.0%
C31KGD, Falkbeer, 3...e4683.3%58.3%
C31KGD, Falkbeer, 4.d3862.5%68.8%
C31KGD, Falkbeer, Milner-Barry variation20.0%50.0%
C31KGD, Falkbeer, Nimzovich variation560.0%70.0%
C31KGD, Falkbeer, Rubinstein variation520.0%70.0%
C31KGD, Falkbeer, Tartakower variation475.0%62.5%
C31KGD, Nimzovich counter-gambit1553.3%73.3%
C32KGD, Falkbeer, 5.de837.5%43.8%
C32KGD, Falkbeer, Charousek gambit2100.0%50.0%
C32KGD, Falkbeer, Keres variation10.0%100.0%
C32KGD, Falkbeer, Reti variation450.0%50.0%
C32KGD, Falkbeer, main line, 7...Bf5616.7%91.7%
C33KGA, Breyer gambit333.3%50.0%
C33KGA, Carrera (Basman) gambit10.0%100.0%
C33KGA, Keres (Mason-Steinitz) gambit1450.0%32.1%
C33KGA, Lesser bishop's (Petroff-Jaenisch-Tartakower) gambit333.3%50.0%
C33KGA, bishop's gambit3836.8%47.4%
C33KGA, bishop's gambit, Bledow variation2412.5%31.3%
C33KGA, bishop's gambit, Boden defence250.0%25.0%
C33KGA, bishop's gambit, Bogolyubov variation728.6%28.6%
C33KGA, bishop's gambit, Cozio (Morphy) defence2100.0%50.0%
C33KGA, bishop's gambit, Gifford variation333.3%50.0%
C33KGA, bishop's gambit, Jaenisch variation8843.2%48.9%
C33KGA, bishop's gambit, Lopez-Gianutio counter-gambit425.0%62.5%
C33KGA, bishop's gambit, Maurian defence666.7%50.0%
C33KGA, bishop's gambit, Morphy variation1729.4%61.8%
C33KGA, bishop's gambit, Paulsen attack450.0%50.0%
C33KGA, bishop's gambit, Ruy Lopez defence1442.9%50.0%
C33KGA, bishop's gambit, Steinitz defence1741.2%38.2%
C33KGA, bishop's gambit, classical defence10.0%0.0%
C33King's gambit accepted10.0%0.0%
C34KGA, Becker defence2941.4%48.3%
C34KGA, Bonsch-Osmolovsky variation2437.5%56.3%
C34KGA, Fischer defence11630.2%44.4%
C34KGA, Gianutio counter-gambit2100.0%50.0%
C34KGA, Schallop defence1729.4%73.5%
C34King's knight's gambit944.4%33.3%
C35KGA, Cunningham defence5139.2%47.1%
C35KGA, Cunningham, Euwe defence1827.8%58.3%
C36KGA, Abbazia defence (classical defence, modern defence[!])3537.1%67.1%
C36KGA, Abbazia defence, modern variation18940.2%45.0%
C37KGA, Blachly gambit2138.1%33.3%
C37KGA, Cochrane gambit333.3%50.0%
C37KGA, King's knight's gambit1369.2%65.4%
C37KGA, Muzio gambit944.4%33.3%
C37KGA, Muzio gambit, Brentano defence425.0%62.5%
C37KGA, Muzio gambit, From defence1100.0%50.0%
C37KGA, Quaade gambit633.3%16.7%
C37KGA, Rosentreter gambit875.0%37.5%
C37KGA, Salvio gambit250.0%75.0%
C37KGA, Salvio gambit, Anderssen counter-attack40.0%50.0%
C38KGA, Hanstein gambit837.5%43.8%
C38KGA, Philidor gambit128.3%29.2%
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 defence5639.3%41.1%
C39KGA, Kieseritsky, Berlin defence, 6.Bc44030.0%35.0%
C39KGA, Kieseritsky, Brentano (Campbell) defence10.0%100.0%
C39KGA, Kieseritsky, Brentano defence10.0%100.0%
C39KGA, Kieseritsky, Kolisch defence7542.7%44.0%
C39KGA, Kieseritsky, Neumann defence1163.6%68.2%
C39KGA, Kieseritsky, Paulsen defence825.0%37.5%
C39KGA, Kieseritsky, Rice gambit1723.5%29.4%
C39KGA, Kieseritsky, Salvio (Rosenthal) defence4351.2%39.5%
C39KGA, Kieseritsky, long whip (Stockwhip, classical) defence540.0%40.0%
C40Greco defence1030.0%45.0%
C40Gunderam defence6728.4%70.9%
C40King's knight opening20.0%50.0%
C40Latvian counter-gambit7631.6%61.8%
C40Latvian gambit, 3.Bc4580.0%40.0%
C40Latvian, Fraser defence1118.2%54.5%
C40Latvian, Polerio variation2227.3%40.9%
C40QP counter-gambit (elephant gambit)1353.8%65.4%
C40QP counter-gambit, Maroczy gambit366.7%66.7%
C41Philidor's defence20836.5%59.6%
C41Philidor, Hanham variation2540.0%68.0%
C41Philidor, Hanham, Delmar variation2100.0%50.0%
C41Philidor, Hanham, Krause variation1258.3%37.5%
C41Philidor, Hanham, Schlechter variation1723.5%76.5%
C41Philidor, Hanham, Steiner variation2035.0%67.5%
C41Philidor, Improved Hanham variation89139.5%56.2%
C41Philidor, Larsen variation3023.3%65.0%
C41Philidor, Lopez counter-gambit20.0%50.0%
C41Philidor, Nimzovich (Jaenisch) variation1540.0%53.3%
C41Philidor, Nimzovich variation3441.2%61.8%
C41Philidor, Nimzovich, Klein variation580.0%60.0%
C41Philidor, Nimzovich, Larobok variation4447.7%35.2%
C41Philidor, Nimzovich, Rellstab variation2846.4%69.6%
C41Philidor, Nimzovich, Sokolsky variation666.7%66.7%
C41Philidor, Nimzovich, Sozin variation742.9%50.0%
C41Philidor, Paulsen attack250.0%25.0%
C41Philidor, Philidor counter-gambit837.5%56.3%
C41Philidor, Philidor counter-gambit, Zukertort variation650.0%75.0%
C41Philidor, Philidor counter-gambit, del Rio attack30.0%66.7%
C41Philidor, Steinitz variation20.0%0.0%
C41Philidor, exchange variation66736.7%58.4%
C42Petrov three knights game22837.3%57.7%
C42Petrov's defence24044.6%51.5%
C42Petrov, Cochrane gambit6118.0%32.0%
C42Petrov, Cozio (Lasker) attack48848.8%52.7%
C42Petrov, Damiano variation2441.7%50.0%
C42Petrov, French attack333.3%83.3%
C42Petrov, Italian variation6327.0%50.0%
C42Petrov, Kaufmann attack17848.9%48.6%
C42Petrov, Nimzovich attack106045.6%55.0%
C42Petrov, Paulsen attack13939.6%51.4%
C42Petrov, classical attack70047.4%56.6%
C42Petrov, classical attack, Berger variation1275.0%54.2%
C42Petrov, classical attack, Chigorin variation54941.0%57.1%
C42Petrov, classical attack, Jaenisch variation161246.0%58.3%
C42Petrov, classical attack, Krause variation757.1%28.6%
C42Petrov, classical attack, Marshall variation91643.1%57.0%
C42Petrov, classical attack, Mason variation11343.4%58.8%
C42Petrov, classical attack, Tarrasch variation250.0%75.0%
C42Petrov, classical attack, close variation13146.6%59.2%
C43Petrov, Urusov gambit633.3%83.3%
C43Petrov, modern (Steinitz) attack3148.4%56.5%
C43Petrov, modern attack, Bardeleben variation425.0%62.5%
C43Petrov, modern attack, Steinitz variation1100.0%50.0%
C43Petrov, modern attack, Symmetrical variation220745.1%53.3%
C43Petrov, modern attack, Trifunovic variation5345.3%49.1%
C43Petrov, modern attack, main line19446.4%58.2%
C44Dresden opening20.0%0.0%
C44Inverted Hanham2433.3%45.8%
C44Inverted Hungarian2045.0%57.5%
C44King's pawn game7735.1%51.3%
C44Konstantinopolsky opening666.7%66.7%
C44Ponziani counter-gambit10542.9%57.6%
C44Ponziani counter-gambit, Cordel variation10.0%0.0%
C44Ponziani opening29335.8%44.5%
C44Ponziani, Caro variation21042.9%49.5%
C44Ponziani, Fraser defence4837.5%66.7%
C44Ponziani, Jaenisch counter-attack200046.2%53.0%
C44Ponziani, Leonhardt variation8736.8%46.0%
C44Ponziani, Reti variation1233.3%58.3%
C44Ponziani, Romanishin variation1631.3%46.9%
C44Ponziani, Steinitz variation43741.4%45.7%
C44Scotch gambit4233.3%59.5%
C44Scotch gambit, Anderssen (Paulsen, Suhle) counter-attack666.7%33.3%
C44Scotch gambit, Benima defence4734.0%55.3%
C44Scotch gambit, Dubois-Reti defence27040.0%52.2%
C44Scotch gambit, Hanneken variation10.0%100.0%
C44Scotch opening2100.0%50.0%
C44Scotch, Goering gambit18044.4%57.2%
C44Scotch, Goering gambit, Bardeleben variation837.5%43.8%
C44Scotch, Lolli variation1435.7%53.6%
C44Scotch, Relfsson gambit ('MacLopez')666.7%66.7%
C45Scotch game223542.6%53.4%
C45Scotch, Blackburne attack1637.5%50.0%
C45Scotch, Blumenfeld attack1637.5%31.3%
C45Scotch, Ghulam Kassim variation2100.0%50.0%
C45Scotch, Horwitz attack2433.3%66.7%
C45Scotch, Meitner variation3554.3%55.7%
C45Scotch, Mieses variation131341.2%54.2%
C45Scotch, Paulsen attack10.0%100.0%
C45Scotch, Potter variation49339.8%51.5%
C45Scotch, Pulling counter-attack20.0%50.0%
C45Scotch, Romanishin variation5545.5%59.1%
C45Scotch, Schmidt variation58251.0%47.2%
C45Scotch, Steinitz variation4035.0%55.0%
C45Scotch, Tartakower variation1540.0%46.7%
C46Four knights game57943.2%50.3%
C46Four knights, Gunsberg variation7648.7%49.3%
C46Four knights, Italian variation15642.3%48.7%
C46Four knights, Schultze-Mueller gambit30.0%33.3%
C46Three knights game11637.1%53.9%
C46Three knights, Schlechter variation1428.6%42.9%
C46Three knights, Steinitz variation2839.3%55.4%
C46Three knights, Steinitz, Rosenthal variation540.0%40.0%
C46Three knights, Winawer defence (Gothic defence)10.0%100.0%
C47Four knights, Belgrade gambit10647.2%53.8%
C47Four knights, Scotch variation1315.4%61.5%
C47Four knights, Scotch, 4...exd445649.8%53.8%
C47Four knights, Scotch, Krause variation3135.5%62.9%
C48Four knights, Bardeleben variation850.0%50.0%
C48Four knights, Marshall variation20.0%0.0%
C48Four knights, Ranken variation1442.9%64.3%
C48Four knights, Rubinstein counter-gambit98039.0%52.8%
C48Four knights, Rubinstein counter-gambit, 5.Be22100.0%50.0%
C48Four knights, Rubinstein counter-gambit, Bogolyubov variation1546.7%43.3%
C48Four knights, Rubinstein counter-gambit, Henneberger variation5940.7%50.8%
C48Four knights, Rubinstein counter-gambit, exchange variation14064.3%52.9%
C48Four knights, Spanish variation20952.2%57.7%
C48Four knights, Spanish, classical defence16445.1%50.6%
C48Four knights, Spielmann variation366.7%33.3%
C49Four knights6454.7%49.2%
C49Four knights, Gunsberg counter-attack1100.0%50.0%
C49Four knights, Janowski variation1540.0%60.0%
C49Four knights, Nimzovich (Paulsen) variation5358.5%57.5%
C49Four knights, Svenonius variation10.0%100.0%
C49Four knights, double Ruy Lopez5942.4%63.6%
C49Four knights, symmetrical variation18042.8%55.3%
C49Four knights, symmetrical, Blake variation2100.0%50.0%
C49Four knights, symmetrical, Capablanca variation2259.1%61.4%
C49Four knights, symmetrical, Maroczy system5147.1%51.0%
C49Four knights, symmetrical, Metger unpin32136.8%50.8%
C49Four knights, symmetrical, Pillsbury variation4259.5%48.8%
C49Four knights, symmetrical, Tarrasch variation1650.0%50.0%
C50Giuoco Pianissimo144438.5%53.0%
C50Giuoco Pianissimo, Canal variation17843.8%52.8%
C50Giuoco Pianissimo, Italian four knights variation35038.6%51.6%
C50Giuoco Piano42441.5%52.4%
C50Giuoco Piano, four knights variation5236.5%51.0%
C50Hungarian defence15640.4%49.7%
C50King's pawn game21036.2%59.5%
C50Rousseau gambit333.3%50.0%
C51Evans counter-gambit250.0%75.0%
C51Evans gambit450.0%75.0%
C51Evans gambit declined1816.7%58.3%
C51Evans gambit declined, 5.a415941.5%45.3%
C51Evans gambit declined, Lange variation20.0%0.0%
C51Evans gambit declined, Showalter variation2441.7%50.0%
C51Evans gambit, 5...Be73636.1%56.9%
C51Evans gambit, Cordel variation6952.2%44.9%
C51Evans gambit, Fraser attack20.0%100.0%
C51Evans gambit, Goering attack10.0%100.0%
C51Evans gambit, Morphy attack2040.0%55.0%
C51Evans gambit, Paulsen variation1827.8%69.4%
C51Evans gambit, Stone-Ware variation19235.4%50.5%
C51Evans gambit, normal variation1921.1%47.4%
C52Evans gambit26740.1%47.8%
C52Evans gambit, Alapin-Steinitz variation250.0%25.0%
C52Evans gambit, Lasker defence616.7%25.0%
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 attack6844.1%44.1%
C52Evans gambit, Waller attack60.0%100.0%
C52Evans gambit, compromised defence4221.4%72.6%
C52Evans gambit, compromised defence, Paulsen variation1625.0%62.5%
C53Giuoco Piano184537.9%52.7%
C53Giuoco Piano, Anderssen variation1855.6%38.9%
C53Giuoco Piano, Bird's attack12931.8%49.2%
C53Giuoco Piano, LaBourdonnais variation911.1%61.1%
C53Giuoco Piano, Mestel variation1100.0%50.0%
C53Giuoco Piano, centre-holding variation3636.1%59.7%
C53Giuoco Piano, close variation2030.0%75.0%
C54Giuoco Piano16853.6%52.4%
C54Giuoco Piano, Moeller (Therkatz) attack3644.4%47.2%
C54Giuoco Piano, Moeller, bayonet attack10.0%100.0%
C54Giuoco Piano, Therkatz-Herzog variation10.0%0.0%
C55Giuoco piano20.0%50.0%
C55Two knights defence5141.2%50.0%
C55Two knights defence (Modern bishop's opening)118838.6%56.0%
C55Two knights defence, Perreux variation2548.0%52.0%
C55Two knights, Max Lange attack1631.3%59.4%
C55Two knights, Max Lange attack, Loman defence10.0%100.0%
C55Two knights, Max Lange attack, Marshall variation825.0%62.5%
C55Two knights, Max Lange attack, Schlechter variation1942.1%52.6%
C55Two knights, Max Lange attack, Steinitz variation1241.7%62.5%
C56Two knights defence13743.8%48.9%
C56Two knights defence, Canal variation540.0%40.0%
C57Two knights defence812.5%31.3%
C57Two knights defence, Fegatello attack5927.1%54.2%
C57Two knights defence, Fegatello attack, Leonhardt variation825.0%50.0%
C57Two knights defence, Fegatello attack, Polerio defence30.0%100.0%
C57Two knights defence, Fritz variation560.0%30.0%
C57Two knights defence, Fritz, Gruber variation425.0%37.5%
C57Two knights defence, Lolli attack1936.8%55.3%
C57Two knights defence, Ulvestad variation1866.7%44.4%
C57Two knights defence, Wilkes Barre (Traxler) variation4637.0%53.3%
C58Two knights defence16036.3%56.3%
C58Two knights defence, Blackburne variation30.0%66.7%
C58Two knights defence, Bogolyubov variation4932.7%49.0%
C58Two knights defence, Colman variation1723.5%35.3%
C58Two knights defence, Kieseritsky variation633.3%66.7%
C58Two knights defence, Paoli variation933.3%72.2%
C58Two knights defence, Yankovich variation1241.7%20.8%
C59Two knights defence19037.9%48.9%
C59Two knights defence, Goering variation425.0%12.5%
C59Two knights defence, Steinitz variation31329.7%47.4%
C60Ruy Lopez (Spanish opening)2725.9%64.8%
C60Ruy Lopez, Cozio defence23242.7%50.2%
C60Ruy Lopez, Cozio defence, Paulsen variation3327.3%68.2%
C60Ruy Lopez, Lucena defence20.0%50.0%
C60Ruy Lopez, fianchetto (Smyslov/Barnes) defence23840.8%52.7%
C61Ruy Lopez, Bird's defence14737.4%59.5%
C61Ruy Lopez, Bird's defence, Paulsen variation333.3%50.0%
C62Ruy Lopez, old Steinitz defence24037.1%54.8%
C62Ruy Lopez, old Steinitz defence, Nimzovich attack520.0%50.0%
C63Ruy Lopez, Schliemann defence26842.9%57.3%
C63Ruy Lopez, Schliemann defence, Berger variation33740.9%57.3%
C64Ruy Lopez, Cordel gambit5841.4%58.6%
C64Ruy Lopez, classical (Cordel) defence18942.3%52.4%
C64Ruy Lopez, classical defence, 4.c323240.9%55.8%
C64Ruy Lopez, classical defence, Benelux variation 37838.6%56.3%
C64Ruy Lopez, classical defence, Charousek variation333.3%83.3%
C64Ruy Lopez, classical defence, Zaitsev variation2100.0%50.0%
C65Ruy Lopez, Berlin defence251339.4%50.9%
C65Ruy Lopez, Berlin defence, 4.O-O15341.2%59.2%
C65Ruy Lopez, Berlin defence, Anderssen variation1100.0%50.0%
C65Ruy Lopez, Berlin defence, Beverwijk variation46635.8%57.6%
C65Ruy Lopez, Berlin defence, Duras variation1338.5%50.0%
C65Ruy Lopez, Berlin defence, Kaufmann variation2642.3%55.8%
C65Ruy Lopez, Berlin defence, Mortimer variation1464.3%32.1%
C65Ruy Lopez, Berlin defence, Nyholm attack6355.6%54.8%
C66Ruy Lopez, Berlin defence, 4.O-O, d68550.6%54.7%
C66Ruy Lopez, Berlin defence, hedgehog variation9952.5%57.6%
C66Ruy Lopez, closed Berlin defence, Bernstein variation1435.7%53.6%
C66Ruy Lopez, closed Berlin defence, Chigorin variation40.0%50.0%
C66Ruy Lopez, closed Berlin defence, Showalter variation5547.3%56.4%
C66Ruy Lopez, closed Berlin defence, Wolf variation5856.9%57.8%
C67Ruy Lopez, Berlin defence, Cordel variation5236.5%60.6%
C67Ruy Lopez, Berlin defence, Minckwitz variation3748.6%62.2%
C67Ruy Lopez, Berlin defence, Pillsbury variation10.0%0.0%
C67Ruy Lopez, Berlin defence, Rosenthal variation2450.0%62.5%
C67Ruy Lopez, Berlin defence, Trifunovic variation520.0%90.0%
C67Ruy Lopez, Berlin defence, Winawer attack2832.1%69.6%
C67Ruy Lopez, Berlin defence, Zukertort variation1250.0%58.3%
C67Ruy Lopez, Berlin defence, open variation338346.7%54.2%
C67Ruy Lopez, open Berlin defence, 5...Be76633.3%53.0%
C67Ruy Lopez, open Berlin defence, Showalter variation1428.6%42.9%
C67Ruy Lopez, open Berlin defence, l'Hermet variation7556.0%49.3%
C68Ruy Lopez, exchange variation7541.3%51.3%
C68Ruy Lopez, exchange, Alekhine variation1442.9%42.9%
C68Ruy Lopez, exchange, Keres variation8253.7%51.2%
C68Ruy Lopez, exchange, Romanovsky variation1233.3%50.0%
C69Ruy Lopez, exchange variation, 5.O-O60641.7%52.9%
C69Ruy Lopez, exchange variation, Alapin gambit26741.2%50.6%
C69Ruy Lopez, exchange, Bronstein variation43932.1%50.0%
C69Ruy Lopez, exchange, Gligoric variation62941.0%56.4%
C70Ruy Lopez3545.7%51.4%
C70Ruy Lopez, Alapin's defence deferred1533.3%76.7%
C70Ruy Lopez, Caro variation8341.0%59.0%
C70Ruy Lopez, Classical defence deferred8345.8%61.4%
C70Ruy Lopez, Cozio defence deferred25845.0%53.1%
C70Ruy Lopez, Graz variation6100.0%50.0%
C70Ruy Lopez, Schliemann defence deferred1926.3%71.1%
C70Ruy Lopez, Taimanov (chase/wing/accelerated counterthrust) variation12337.4%64.2%
C70Ruy Lopez, fianchetto defence deferred2466.7%58.3%
C71Ruy Lopez, modern Steinitz defence10541.9%55.2%
C71Ruy Lopez, modern Steinitz defence, Duras (Keres) variation10242.2%55.4%
C71Ruy Lopez, modern Steinitz defence, Three knights variation1741.2%50.0%
C72Ruy Lopez, modern Steinitz defence, 5.O-O35644.1%58.8%
C73Ruy Lopez, modern Steinitz defence, Alapin variation6538.5%54.6%
C73Ruy Lopez, modern Steinitz defence, Richter variation13351.9%53.8%
C74Ruy Lopez, Siesta, Kopayev variation10730.8%53.7%
C74Ruy Lopez, modern Steinitz defence5038.0%57.0%
C74Ruy Lopez, modern Steinitz defence, siesta variation2045.0%47.5%
C75Ruy Lopez, modern Steinitz defence14241.5%55.3%
C75Ruy Lopez, modern Steinitz defence, Rubinstein variation6536.9%56.9%
C76Ruy Lopez, modern Steinitz defence, fianchetto (Bronstein) variation29735.4%51.7%
C77Ruy Lopez, Anderssen variation71141.4%51.2%
C77Ruy Lopez, Morphy defence19239.1%56.5%
C77Ruy Lopez, Morphy defence, Duras variation4040.0%55.0%
C77Ruy Lopez, Treybal (Bayreuth) variation (exchange var. deferred)6041.7%45.8%
C77Ruy Lopez, Wormald (Alapin) attack30141.9%53.8%
C77Ruy Lopez, Wormald attack, Gruenfeld variation2100.0%50.0%
C77Ruy Lopez, four knights (Tarrasch) variation14745.6%56.1%
C78Ruy Lopez, ...b5 & ...d64233.3%52.4%
C78Ruy Lopez, 5.O-O105646.3%54.5%
C78Ruy Lopez, Archangelsk (counterthrust) variation147942.2%55.0%
C78Ruy Lopez, Moeller defence54042.2%53.5%
C78Ruy Lopez, Wing attack40.0%50.0%
C79Ruy Lopez, Steinitz defence deferred (Russian defence)21738.2%54.6%
C79Ruy Lopez, Steinitz defence deferred, Lipnitsky variation1172.7%54.5%
C79Ruy Lopez, Steinitz defence deferred, Rubinstein variation1241.7%54.2%
C80Ruy Lopez, open (Tarrasch) defence5745.6%59.6%
C80Ruy Lopez, open, 6.d44537.8%45.6%
C80Ruy Lopez, open, 7.Bb348340.8%52.9%
C80Ruy Lopez, open, 8...Be6121638.0%43.0%
C80Ruy Lopez, open, Berger variation366.7%33.3%
C80Ruy Lopez, open, Bernstein variation81647.2%62.7%
C80Ruy Lopez, open, Bernstein variation, Karpov gambit2245.5%45.5%
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 variation540.0%40.0%
C80Ruy Lopez, open, Zukertort variation333.3%50.0%
C81Ruy Lopez, open, Howell attack13151.9%50.4%
C81Ruy Lopez, open, Howell attack, Adam variation20.0%0.0%
C81Ruy Lopez, open, Howell attack, Ekstroem variation1040.0%60.0%
C82Ruy Lopez, open, 9.c350.0%80.0%
C82Ruy Lopez, open, Berlin variation1637.5%68.8%
C82Ruy Lopez, open, Dilworth variation15740.8%61.1%
C82Ruy Lopez, open, Italian variation8847.7%65.9%
C82Ruy Lopez, open, Motzko attack5644.6%58.0%
C82Ruy Lopez, open, Motzko attack, Nenarokov variation650.0%75.0%
C82Ruy Lopez, open, St. Petersburg variation18440.2%66.3%
C83Ruy Lopez, open, 9...Be7, 10.Re14334.9%54.7%
C83Ruy Lopez, open, Breslau variation250.0%75.0%
C83Ruy Lopez, open, Malkin variation862.5%68.8%
C83Ruy Lopez, open, classical defence16149.1%59.9%
C84Ruy Lopez, closed defence121340.5%51.5%
C84Ruy Lopez, closed, Basque gambit (North Spanish variation)250.0%25.0%
C84Ruy Lopez, closed, centre attack16748.5%46.4%
C85Ruy Lopez, Exchange variation doubly deferred (DERLD)108739.2%48.6%
C86Ruy Lopez, Worrall attack2454.2%56.3%
C86Ruy Lopez, Worrall attack, sharp line20438.7%54.7%
C86Ruy Lopez, Worrall attack, solid line6432.8%46.1%
C87Ruy Lopez, closed, Averbach variation24341.6%59.5%
C88Ruy Lopez, Trajkovic counter-attack62640.9%51.9%
C88Ruy Lopez, closed120341.5%52.6%
C88Ruy Lopez, closed, 7...O-O274040.4%52.4%
C88Ruy Lopez, closed, 7...d6, 8.d41833.3%16.7%
C88Ruy Lopez, closed, 8.c32737.0%63.0%
C88Ruy Lopez, closed, Balla variation3941.0%48.7%
C88Ruy Lopez, closed, anti-Marshall 8.a4146339.5%53.9%
C89Ruy Lopez, Marshall counter-attack48553.6%54.6%
C89Ruy Lopez, Marshall counter-attack, 11...c616846.4%54.8%
C89Ruy Lopez, Marshall, Herman Steiner variation333.3%83.3%
C89Ruy Lopez, Marshall, Kevitz variation2100.0%50.0%
C89Ruy Lopez, Marshall, main line, 12.d2d420842.3%63.0%
C89Ruy Lopez, Marshall, main line, 14...Qh340951.3%51.3%
C90Ruy Lopez, closed (with ...d6)116936.5%51.5%
C90Ruy Lopez, closed, Lutikov variation3748.6%56.8%
C90Ruy Lopez, closed, Pilnik variation79935.5%51.8%
C90Ruy Lopez, closed, Suetin variation6737.3%56.0%
C91Ruy Lopez, closed, 9.d4118838.7%57.9%
C91Ruy Lopez, closed, Bogolyubov variation369943.0%53.9%
C92Ruy Lopez, closed, 9.h338242.7%52.2%
C92Ruy Lopez, closed, Flohr-Zaitsev system (Lenzerheide variation)183838.6%56.4%
C92Ruy Lopez, closed, Keres (9...a5) variation1650.0%43.8%
C92Ruy Lopez, closed, Kholmov variation11930.3%66.4%
C92Ruy Lopez, closed, Ragozin-Petrosian (`Keres') variation28443.0%64.1%
C93Ruy Lopez, closed, Smyslov defence15139.7%58.3%
C94Ruy Lopez, closed, Breyer defence4233.3%57.1%
C95Ruy Lopez, closed, Breyer, 10.d410.0%0.0%
C95Ruy Lopez, closed, Breyer, Borisenko variation70339.7%56.4%
C95Ruy Lopez, closed, Breyer, Gligoric variation4845.8%54.2%
C95Ruy Lopez, closed, Breyer, Simagin variation2035.0%57.5%
C96Ruy Lopez, closed (10...c5)61433.2%64.0%
C96Ruy Lopez, closed (8...Na5)2254.5%63.6%
C96Ruy Lopez, closed, Borisenko defence4040.0%57.5%
C96Ruy Lopez, closed, Keres (...Nd7) defence19737.6%65.0%
C96Ruy Lopez, closed, Rossolimo defence30.0%33.3%
C97Ruy Lopez, closed, Chigorin defence72931.0%63.0%
C98Ruy Lopez, closed, Chigorin, 12...Nc613631.6%61.4%
C99Ruy Lopez, closed, Chigorin, 12...c5d490240.4%62.7%
D00Blackmar gambit19840.9%40.7%
D00Blackmar-Diemer gambit3020.0%40.0%
D00Blackmar-Diemer, Euwe defence2623.1%42.3%
D00Levitsky attack (Queen's bishop attack)171037.0%52.3%
D00Queen's pawn game44639.0%48.9%
D00Queen's pawn, Anti-Veresov366.7%33.3%
D00Queen's pawn, Chigorin variation29334.5%52.0%
D00Queen's pawn, Mason variation73940.6%50.9%
D00Queen's pawn, Mason variation, Steinitz counter-gambit35937.6%49.2%
D00Queen's pawn, stonewall attack5736.8%43.0%
D01Richter-Veresov attack39836.7%46.0%
D01Richter-Veresov attack, Richter variation1723.5%52.9%
D01Richter-Veresov attack, Veresov variation2045.0%47.5%
D02Queen's bishop game111439.7%53.0%
D02Queen's pawn game455341.1%52.7%
D02Queen's pawn game, Chigorin variation37140.7%58.4%
D02Queen's pawn game, Krause variation34044.7%54.4%
D03Torre attack (Tartakower variation)63239.6%50.6%
D04Queen's pawn game65541.5%50.2%
D05Colle system16348.5%54.9%
D05Queen's pawn game50936.7%52.2%
D05Queen's pawn game, Rubinstein (Colle-Zukertort) variation22239.2%53.4%
D05Queen's pawn game, Zukertort variation1861.1%52.8%
D06QGD, Grau (Sahovic) defence9534.7%62.6%
D06QGD, Marshall defence11242.9%58.9%
D06QGD, symmetrical (Austrian) defence3450.0%57.4%
D07QGD, Chigorin defence66235.3%57.3%
D07QGD, Chigorin defence, Janowski variation7932.9%63.3%
D08QGD, Albin counter-gambit8341.0%63.9%
D08QGD, Albin counter-gambit, Alapin variation757.1%57.1%
D08QGD, Albin counter-gambit, Balogh variation425.0%87.5%
D08QGD, Albin counter-gambit, Janowski variation425.0%62.5%
D08QGD, Albin counter-gambit, Lasker trap10.0%100.0%
D09QGD, Albin counter-gambit, 5.g37841.0%61.5%
D10QGD Slav defence353741.0%53.9%
D10QGD Slav defence, Alekhine variation23341.2%54.9%
D10QGD Slav defence, exchange variation137544.6%55.3%
D10QGD Slav, Winawer counter-gambit13031.5%53.5%
D11QGD Slav, 3.Nf3200540.1%55.9%
D11QGD Slav, 4.e3366842.3%55.4%
D11QGD Slav, Breyer variation10741.1%58.9%
D12QGD Slav, 4.e3 Bf5281440.0%54.2%
D12QGD Slav, Amsterdam variation2152.4%45.2%
D12QGD Slav, exchange variation8737.9%48.9%
D13QGD Slav, exchange variation66245.8%55.7%
D14QGD Slav, exchange variation, 6.Bf4 Bf565049.4%51.5%
D14QGD Slav, exchange, Trifunovic variation20449.5%52.7%
D15QGD Slav accepted7642.1%48.7%
D15QGD Slav, 4.Nc3349439.8%54.8%
D15QGD Slav, 5.e3 (Alekhine variation)14829.7%54.7%
D15QGD Slav, Schlechter variation27142.8%59.0%
D15QGD Slav, Slav gambit1625.0%56.3%
D15QGD Slav, Suechting variation12832.8%57.8%
D15QGD Slav, Tolush-Geller gambit11828.8%40.7%
D16QGD Slav accepted, Alapin variation15738.9%66.6%
D16QGD Slav, Smyslov variation6432.8%58.6%
D16QGD Slav, Soultanbeieff variation37949.3%53.4%
D16QGD Slav, Steiner variation20537.1%63.9%
D17QGD Slav, Carlsbad variation46737.5%60.3%
D17QGD Slav, Czech defence34248.0%54.4%
D17QGD Slav, Krause attack65039.2%58.2%
D17QGD Slav, Wiesbaden variation59642.3%57.4%
D18QGD Slav, Dutch variation24939.8%59.2%
D18QGD Slav, Dutch, Lasker variation425.0%87.5%
D19QGD Slav, Dutch variation126038.7%57.5%
D19QGD Slav, Dutch variation, main line18640.9%57.5%
D19QGD Slav, Dutch, Saemisch variation250.0%25.0%
D20QGA, 3.e4260340.0%56.9%
D20QGA, Linares variation8035.0%61.3%
D20Queen's gambit accepted84745.9%55.7%
D21QGA, 3.Nf322138.9%57.5%
D21QGA, Alekhine defense, Borisenko-Furman variation2128.6%52.4%
D21QGA, Ericson variation40.0%25.0%
D22QGA, Alekhine defence20040.0%56.5%
D22QGA, Alekhine defence, Alatortsev variation1250.0%41.7%
D22QGA, Haberditz variation9857.1%52.0%
D23QGA, Mannheim variation28345.9%52.7%
D23Queen's gambit accepted3339.4%50.0%
D24QGA, 4.Nc318841.0%50.8%
D24QGA, Bogolyubov variation14949.0%56.7%
D25QGA, 4.e38736.8%54.0%
D25QGA, Flohr variation6330.2%65.9%
D25QGA, Janowsky-Larsen variation33139.0%57.9%
D25QGA, Smyslov variation8752.9%58.6%
D26QGA, 4...e624345.7%54.5%
D26QGA, classical variation61951.5%52.6%
D26QGA, classical variation, 6.O-O14146.1%57.1%
D26QGA, classical, Furman variation10.0%0.0%
D26QGA, classical, Steinitz variation3246.9%64.1%
D27QGA, classical, 6...a6368050.4%55.1%
D27QGA, classical, Geller variation7255.6%52.8%
D27QGA, classical, Rubinstein variation141147.6%55.6%
D28QGA, classical, 7...b519351.8%56.5%
D28QGA, classical, 7.Qe26251.6%61.3%
D29QGA, classical, 8...Bb730041.0%47.8%
D29QGA, classical, Smyslov variation4055.0%45.0%
D30QGD72947.9%51.9%
D30QGD Slav27045.9%54.8%
D30QGD Slav, Semmering variation2231.8%47.7%
D30QGD, Capablanca variation3333.3%56.1%
D30QGD, Capablanca-Duras variation31245.2%54.3%
D30QGD, Hastings variation48547.0%52.8%
D30QGD, Vienna variation55354.1%52.5%
D30Queen's gambit declined549645.3%55.7%
D31QGD, 3.Nc370641.9%55.2%
D31QGD, Alapin variation742.9%64.3%
D31QGD, Charousek (Petrosian) variation131245.5%52.8%
D31QGD, Janowski variation10945.0%50.0%
D31QGD, semi-Slav85638.9%55.1%
D31QGD, semi-Slav, Abrahams variation12535.2%44.0%
D31QGD, semi-Slav, Junge variation1030.0%35.0%
D31QGD, semi-Slav, Koomen variation955.6%38.9%
D31QGD, semi-Slav, Marshall gambit65643.1%53.0%
D31QGD, semi-Slav, Noteboom variation22939.3%52.4%
D32QGD, Tarrasch defence28546.7%54.2%
D32QGD, Tarrasch defence, 4.cd ed1735.3%58.8%
D32QGD, Tarrasch defence, Marshall gambit633.3%50.0%
D32QGD, Tarrasch defence, Tarrasch gambit540.0%20.0%
D32QGD, Tarrasch, von Hennig-Schara gambit5541.8%60.9%
D33QGD, Tarrasch, Folkestone (Swedish) variation4254.8%58.3%
D33QGD, Tarrasch, Prague variation6131.1%53.3%
D33QGD, Tarrasch, Schlechter-Rubinstein system1338.5%50.0%
D33QGD, Tarrasch, Wagner variation922.2%66.7%
D34QGD, Tarrasch, Prague variation, 7...Be716943.2%55.9%
D34QGD, Tarrasch, Prague variation, 9.Bg553247.4%57.5%
D34QGD, Tarrasch, Prague variation, Normal position63447.5%56.2%
D34QGD, Tarrasch, Reti variation2661.5%61.5%
D35QGD, 3...Nf67941.8%50.0%
D35QGD, Harrwitz attack18851.1%55.3%
D35QGD, exchange variation35242.6%56.5%
D35QGD, exchange, Saemisch variation26847.0%54.5%
D35QGD, exchange, positional line89140.7%54.0%
D35QGD, exchange, positional line, 5...c671541.5%54.8%
D36QGD, exchange, positional line, 6.Qc221942.0%53.9%
D37QGD, 4.Nf3502746.5%52.7%
D37QGD, classical variation (5.Bf4)385844.9%55.2%
D38QGD, Ragozin variation356446.2%52.4%
D39QGD, Ragozin, Vienna variation151250.9%51.1%
D40QGD, Semi-Tarrasch defence41542.2%54.8%
D40QGD, Semi-Tarrasch defence, Pillsbury variation2437.5%56.3%
D40QGD, Semi-Tarrasch, symmetrical variation850.0%62.5%
D41QGD, Semi-Tarrasch with e312846.9%52.3%
D41QGD, Semi-Tarrasch, 5.cd58247.6%58.0%
D41QGD, Semi-Tarrasch, Kmoch variation875.0%50.0%
D41QGD, Semi-Tarrasch, San Sebastian variation2437.5%77.1%
D42QGD, Semi-Tarrasch, 7.Bd324642.7%56.7%
D43QGD semi-Slav627541.4%52.8%
D43QGD semi-Slav, Hastings variation520.0%90.0%
D44QGD semi-Slav, 5.Bg5 dc14243.7%49.3%
D44QGD semi-Slav, Botvinnik system (anti-Meran)7038.6%53.6%
D44QGD semi-Slav, Ekstrom variation2646.2%38.5%
D44QGD semi-Slav, anti-Meran gambit75035.2%58.3%
D44QGD semi-Slav, anti-Meran, Alatortsev system1100.0%50.0%
D44QGD semi-Slav, anti-Meran, Lilienthal variation15930.8%66.4%
D44QGD semi-Slav, anti-Meran, Szabo variation2420.8%35.4%
D45QGD semi-Slav, 5...Nd751338.4%54.1%
D45QGD semi-Slav, 5.e339240.6%56.8%
D45QGD semi-Slav, Rubinstein (anti-Meran) system1533.3%43.3%
D45QGD semi-Slav, Stoltz variation1123043.5%53.4%
D45QGD semi-Slav, accelerated Meran (Alekhine variation)179744.0%54.0%
D45QGD semi-Slav, stonewall defence1154.5%54.5%
D46QGD semi-Slav, 6.Bd33540.0%62.9%
D46QGD semi-Slav, Bogolyubov variation15843.0%57.0%
D46QGD semi-Slav, Chigorin defence41644.5%54.0%
D46QGD semi-Slav, Romih variation16737.1%64.1%
D47QGD semi-Slav, 7.Bc45536.4%52.7%
D47QGD semi-Slav, Meran variation121449.8%54.9%
D47QGD semi-Slav, Meran, Wade variation679239.4%53.5%
D47QGD semi-Slav, neo-Meran (Lundin variation)27648.2%54.5%
D48QGD semi-Slav, Meran205.0%37.5%
D48QGD semi-Slav, Meran, 8...a6136149.7%48.8%
D48QGD semi-Slav, Meran, Pirc variation955.6%72.2%
D48QGD semi-Slav, Meran, Reynolds' variation73340.2%56.3%
D48QGD semi-Slav, Meran, old main line11135.1%52.7%
D49QGD semi-Slav, Meran, Blumenfeld variation15945.3%50.9%
D49QGD semi-Slav, Meran, Rabinovich variation6025.0%44.2%
D49QGD semi-Slav, Meran, Rellstab attack1637.5%62.5%
D49QGD semi-Slav, Meran, Sozin variation15344.4%45.8%
D49QGD semi-Slav, Meran, Stahlberg variation8041.3%45.6%
D50QGD, 4.Bg56743.3%53.0%
D50QGD, Been-Koomen variation540.0%20.0%
D50QGD, Canal (Venice) variation20.0%50.0%
D50QGD, Semi-Tarrasch1030.0%45.0%
D50QGD, Semi-Tarrasch, Krause variation1100.0%50.0%
D50QGD, Semi-Tarrasch, Primitive Pillsbury variation1241.7%54.2%
D51QGD1145.5%68.2%
D51QGD, 4.Bg5 Nbd76540.0%53.8%
D51QGD, 5...c66349.2%53.2%
D51QGD, Alekhine variation40.0%50.0%
D51QGD, Capablanca anti-Cambridge Springs variation1070.0%65.0%
D51QGD, Manhattan variation837.5%68.8%
D52QGD12540.0%58.4%
D52QGD, Cambridge Springs defence3641.7%45.8%
D52QGD, Cambridge Springs defence, 7.cd3633.3%50.0%
D52QGD, Cambridge Springs defence, Argentine variation1931.6%42.1%
D52QGD, Cambridge Springs defence, Bogoljubow variation38946.8%56.0%
D52QGD, Cambridge Springs defence, Capablanca variation3636.1%59.7%
D52QGD, Cambridge Springs defence, Rubinstein variation15339.9%55.2%
D52QGD, Cambridge Springs defence, Yugoslav variation35439.0%57.3%
D53QGD, 4.Bg5 Be791145.3%54.3%
D53QGD, 4.Bg5 Be7, 5.e3 O-O3348.5%51.5%
D53QGD, Lasker variation425.0%87.5%
D54QGD, Anti-neo-orthodox variation3441.2%47.1%
D55QGD, 6.Nf311833.9%57.6%
D55QGD, Neo-orthodox variation633.3%50.0%
D55QGD, Neo-orthodox variation, 7.Bh412744.9%57.1%
D55QGD, Neo-orthodox variation, 7.Bxf631145.7%51.8%
D55QGD, Petrosian variation35352.1%53.5%
D56QGD, Lasker defence29845.3%53.5%
D56QGD, Lasker defence, Teichmann variation9051.1%50.0%
D57QGD, Lasker defence, Bernstein variation1070.0%45.0%
D57QGD, Lasker defence, main line4555.6%52.2%
D58QGD, Tartakower (Makagonov-Bondarevsky) system486746.3%52.0%
D59QGD, Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd518048.3%46.9%
D59QGD, Tartakower variation11044.5%45.9%
D60QGD, Orthodox defence8932.6%55.6%
D60QGD, Orthodox defence, Botvinnik variation6532.3%50.0%
D60QGD, Orthodox defence, Rauzer variation3240.6%60.9%
D61QGD, Orthodox defence, Rubinstein variation21144.5%51.2%
D62QGD, Orthodox defence, 7.Qc2 c5, 8.cd (Rubinstein)13150.4%55.7%
D63QGD, Orthodox defence7644.7%57.9%
D63QGD, Orthodox defence, 7.Rc120935.9%57.7%
D63QGD, Orthodox defence, Capablanca variation1100.0%50.0%
D63QGD, Orthodox defence, Pillsbury attack1533.3%70.0%
D63QGD, Orthodox defence, Swiss (Henneberger) variation8644.2%62.8%
D63QGD, Orthodox defence, Swiss, Karlsbad variation15341.8%52.9%
D64QGD, Orthodox defence, Rubinstein attack (with Rc1)9545.3%56.3%
D64QGD, Orthodox defence, Rubinstein attack, Gruenfeld variation1421.4%46.4%
D64QGD, Orthodox defence, Rubinstein attack, Karlsbad variation1844.4%33.3%
D64QGD, Orthodox defence, Rubinstein attack, Wolf variation1346.2%46.2%
D65QGD, Orthodox defence, Rubinstein attack, main line1154.5%72.7%
D66QGD, Orthodox defence, Bd3 line22245.9%59.5%
D66QGD, Orthodox defence, Bd3 line, fianchetto variation742.9%78.6%
D67QGD, Orthodox defence, Bd3 line1957.9%44.7%
D67QGD, Orthodox defence, Bd3 line, 11.O-O4736.2%64.9%
D67QGD, Orthodox defence, Bd3 line, Alekhine variation3557.1%54.3%
D68QGD, Orthodox defence, classical variation6746.3%57.5%
D68QGD, Orthodox defence, classical, 13.d1b1 (Maroczy)366.7%33.3%
D68QGD, Orthodox defence, classical, 13.d1c2 (Vidmar)4456.8%58.0%
D69QGD, Orthodox defence, classical, 13.de1553.3%53.3%
D70Neo-Gruenfeld (Kemeri) defence3040.0%53.3%
D70Neo-Gruenfeld defence18037.8%56.7%
D71Neo-Gruenfeld, 5.cd27746.2%56.0%
D72Neo-Gruenfeld, 5.cd, main line16933.7%60.1%
D73Neo-Gruenfeld, 5.Nf375851.3%55.3%
D74Neo-Gruenfeld, 6.cd Nxd5, 7.O-O19944.7%56.0%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc37745.5%60.4%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.dc1526.7%73.3%
D76Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb649744.3%57.1%
D77Neo-Gruenfeld, 6.O-O64646.3%54.3%
D78Neo-Gruenfeld, 6.O-O c671742.0%54.6%
D79Neo-Gruenfeld, 6.O-O, main line44848.7%54.2%
D80Gruenfeld defence66748.0%54.7%
D80Gruenfeld, Lundin variation10.0%0.0%
D80Gruenfeld, Stockholm variation65742.9%54.3%
D81Gruenfeld, Russian variation30542.0%63.0%
D82Gruenfeld, 4.Bf450345.1%53.6%
D83Gruenfeld, Gruenfeld gambit1729.4%67.6%
D83Gruenfeld, Gruenfeld gambit, Botvinnik variation1573.3%63.3%
D83Gruenfeld, Gruenfeld gambit, Capablanca variation18046.7%55.6%
D84Gruenfeld, Gruenfeld gambit accepted4551.1%54.4%
D85Gruenfeld, exchange variation246847.6%56.5%
D85Gruenfeld, modern exchange variation299346.2%55.9%
D86Gruenfeld, exchange, Larsen variation30.0%66.7%
D86Gruenfeld, exchange, Simagin's improved variation9739.2%51.5%
D86Gruenfeld, exchange, Simagin's lesser variation2832.1%55.4%
D86Gruenfeld, exchange, classical variation97545.6%55.2%
D87Gruenfeld, exchange, Seville variation7754.5%62.3%
D87Gruenfeld, exchange, Spassky variation46942.0%54.3%
D88Gruenfeld, Spassky variation, main line, 10...cd, 11.cd19142.4%61.0%
D89Gruenfeld, Spassky variation, main line, 13.Bd37038.6%49.3%
D89Gruenfeld, exchange, Sokolsky variation850.0%37.5%
D90Gruenfeld, Flohr variation22936.7%55.0%
D90Gruenfeld, Schlechter variation1833.3%38.9%
D90Gruenfeld, Three knights variation45747.3%54.7%
D91Gruenfeld, 5.Bg583739.1%48.1%
D92Gruenfeld, 5.Bf465044.8%57.0%
D93Gruenfeld with Bf4 e325049.6%52.0%
D94Gruenfeld with e3 Bd31844.4%55.6%
D94Gruenfeld, 5.e339644.9%57.8%
D94Gruenfeld, Flohr defence1850.0%58.3%
D94Gruenfeld, Makogonov variation7548.0%46.7%
D94Gruenfeld, Opovcensky variation13240.9%54.5%
D94Gruenfeld, Smyslov defence15446.8%57.1%
D95Gruenfeld with e3 & Qb31457.1%64.3%
D95Gruenfeld, Botvinnik variation6442.2%50.8%
D96Gruenfeld, Russian variation19838.9%55.8%
D97Gruenfeld, Russian variation with e42532.0%60.0%
D97Gruenfeld, Russian, Alekhine (Hungarian) variation152244.3%51.2%
D97Gruenfeld, Russian, Byrne (Simagin) variation11838.1%58.9%
D97Gruenfeld, Russian, Levenfish variation742.9%64.3%
D97Gruenfeld, Russian, Prins variation42942.7%57.9%
D97Gruenfeld, Russian, Szabo (Boleslavsky) variation18343.7%57.9%
D98Gruenfeld, Russian, Keres variation1136.4%54.5%
D98Gruenfeld, Russian, Smyslov variation23441.5%60.0%
D99Gruenfeld defence, Smyslov, Yugoslav variation1127.3%50.0%
D99Gruenfeld defence, Smyslov, main line15939.0%59.1%
E00Catalan opening291642.5%55.2%
E00Neo-Indian (Seirawan) attack15931.4%52.8%
E00Queen's pawn game37642.0%56.4%
E01Catalan, closed42248.3%51.9%
E02Catalan, open, 5.Qa413246.2%58.7%
E03Catalan, open, 5.Qa4 Nbd7, 6.Qxc47054.3%40.0%
E03Catalan, open, Alekhine variation1421.4%39.3%
E04Catalan, open, 5.Nf3396643.5%53.3%
E05Catalan, open, classical line9252.2%55.4%
E06Catalan, closed, 5.Nf3278148.5%53.8%
E07Catalan, closed, 6...Nbd75738.6%50.9%
E07Catalan, closed, Botvinnik variation6344.4%42.9%
E08Catalan, closed, 7.Qc27939.2%60.1%
E08Catalan, closed, Qc2 & b318040.6%50.8%
E08Catalan, closed, Spassky gambit728.6%57.1%
E09Catalan, closed, main line20334.0%60.3%
E10Blumenfeld counter-gambit29042.4%55.0%
E10Blumenfeld counter-gambit accepted11339.8%54.4%
E10Blumenfeld counter-gambit, Dus-Chotimursky variation15532.3%56.8%
E10Blumenfeld counter-gambit, Spielmann variation6338.1%57.1%
E10Doery defence2142.9%54.8%
E10Dzindzikhashvili defence5549.1%59.1%
E10Queen's pawn game379145.4%55.6%
E11Bogo-Indian defence134939.4%55.1%
E11Bogo-Indian defence, Gruenfeld variation178540.2%55.9%
E11Bogo-Indian defence, Monticelli trap1241.7%45.8%
E11Bogo-Indian defence, Nimzovich variation134838.1%58.2%
E12Queen's Indian defence62041.8%53.8%
E12Queen's Indian, 4.Nc3432139.9%53.2%
E12Queen's Indian, 4.Nc3, Botvinnik variation3520.0%47.1%
E12Queen's Indian, Miles variation127044.2%52.6%
E12Queen's Indian, Petrosian system608642.8%54.2%
E13Queen's Indian, 4.Nc3, main line20835.6%52.4%
E14Queen's Indian, 4.e3160039.8%53.5%
E14Queen's Indian, Averbakh variation20.0%50.0%
E15Queen's Indian, 4.g3194446.6%55.9%
E15Queen's Indian, 4.g3 Bb722539.6%53.6%
E15Queen's Indian, Buerger variation2437.5%60.4%
E15Queen's Indian, Nimzovich variation (exaggerated fianchetto)1350540.3%56.4%
E15Queen's Indian, Rubinstein variation11235.7%58.0%
E16Queen's Indian, Capablanca variation31740.7%56.3%
E16Queen's Indian, Riumin variation19840.4%56.1%
E16Queen's Indian, Yates variation30936.6%58.7%
E17Queen's Indian, 5.Bg2 Be72828.6%39.3%
E17Queen's Indian, Euwe variation5952.5%55.1%
E17Queen's Indian, Opovcensky variation61438.3%54.2%
E17Queen's Indian, anti-Queen's Indian system26739.0%53.2%
E17Queen's Indian, old main line, 6.O-O76341.8%58.5%
E18Queen's Indian, old main line, 7.Nc3150643.6%56.6%
E19Queen's Indian, old main line, 9.Qxc3128745.5%58.7%
E20Nimzo-Indian defence10150.5%51.0%
E20Nimzo-Indian, Kmoch variation64638.5%53.5%
E20Nimzo-Indian, Mikenas attack666.7%50.0%
E20Nimzo-Indian, Romanishin-Kasparov (Steiner) system37346.1%53.4%
E21Nimzo-Indian, three knights variation213541.3%53.9%
E21Nimzo-Indian, three knights, Korchnoi variation40.0%50.0%
E22Nimzo-Indian, Spielmann variation10043.0%50.5%
E23Nimzo-Indian, Spielmann, 4...c5, 5.dc Nc63839.5%51.3%
E23Nimzo-Indian, Spielmann, Karlsbad variation1540.0%40.0%
E23Nimzo-Indian, Spielmann, San Remo variation650.0%75.0%
E23Nimzo-Indian, Spielmann, Staahlberg variation10.0%100.0%
E24Nimzo-Indian, Saemisch variation15548.4%48.1%
E24Nimzo-Indian, Saemisch, Botvinnik variation4436.4%43.2%
E25Nimzo-Indian, Saemisch variation11341.6%51.8%
E25Nimzo-Indian, Saemisch, Keres variation26946.1%53.2%
E25Nimzo-Indian, Saemisch, Romanovsky variation7642.1%48.7%
E26Nimzo-Indian, Saemisch variation5446.3%54.6%
E26Nimzo-Indian, Saemisch, O'Kelly variation2128.6%57.1%
E27Nimzo-Indian, Saemisch variation4546.7%41.1%
E28Nimzo-Indian, Saemisch variation9125.3%52.2%
E29Nimzo-Indian, Saemisch, Capablanca variation2437.5%43.8%
E29Nimzo-Indian, Saemisch, main line7339.7%55.5%
E30Nimzo-Indian, Leningrad variation54135.1%48.2%
E30Nimzo-Indian, Leningrad, ...b5 gambit5328.3%46.2%
E31Nimzo-Indian, Leningrad, main line18431.0%51.4%
E32Nimzo-Indian, classical variation588142.2%53.6%
E32Nimzo-Indian, classical, Adorjan gambit9744.3%51.0%
E33Nimzo-Indian, classical, 4...Nc66451.6%55.5%
E33Nimzo-Indian, classical, Milner-Barry (Zurich) variation26038.8%58.3%
E34Nimzo-Indian, classical, Noa variation71752.6%54.3%
E35Nimzo-Indian, classical, Noa variation, 5.cd ed49444.3%50.5%
E36Nimzo-Indian, classical, Botvinnik variation1030.0%65.0%
E36Nimzo-Indian, classical, Noa variation, 5.a325445.7%52.4%
E37Nimzo-Indian, classical, Noa variation, main line, 7.Qc227247.1%62.5%
E37Nimzo-Indian, classical, San Remo variation30.0%66.7%
E38Nimzo-Indian, classical, 4...c554037.8%60.4%
E39Nimzo-Indian, classical, Pirc variation87638.4%55.0%
E40Nimzo-Indian, 4.e312227.9%57.4%
E40Nimzo-Indian, 4.e3, Taimanov variation6334.9%63.5%
E41Nimzo-Indian, 4.e3 c564643.8%54.4%
E41Nimzo-Indian, e3, Huebner variation45733.5%50.7%
E42Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein)53344.1%53.9%
E43Nimzo-Indian, Fischer variation54836.7%53.7%
E44Nimzo-Indian, Fischer variation, 5.Ne230935.9%55.2%
E45Nimzo-Indian, 4.e3, Bronstein (Byrne) variation15851.9%57.6%
E46Nimzo-Indian, 4.e3 O-O5930.5%57.6%
E46Nimzo-Indian, Reshevsky variation83644.3%51.2%
E46Nimzo-Indian, Simagin variation11139.6%49.5%
E47Nimzo-Indian, 4.e3 O-O, 5.Bd348647.1%51.7%
E48Nimzo-Indian, 4.e3 O-O, 5.Bd3 d540841.2%48.8%
E49Nimzo-Indian, 4.e3, Botvinnik system17446.0%56.3%
E50Nimzo-Indian, 4.e3 e8g8, 5.Nf3, without ...d515738.9%50.6%
E51Nimzo-Indian, 4.e3 e8g8, 5.Nf3 d7d512349.6%47.6%
E51Nimzo-Indian, 4.e3, Ragozin variation2138.1%66.7%
E52Nimzo-Indian, 4.e3, main line with ...b642639.2%53.2%
E53Nimzo-Indian, 4.e3, Gligoric system with 7...Nbd74161.0%50.0%
E53Nimzo-Indian, 4.e3, Keres variation8737.9%45.4%
E53Nimzo-Indian, 4.e3, main line with ...c534839.9%54.7%
E54Nimzo-Indian, 4.e3, Gligoric system with 7...dc116448.6%55.8%
E54Nimzo-Indian, 4.e3, Gligoric system, Smyslov variation1968.4%65.8%
E55Nimzo-Indian, 4.e3, Gligoric system, Bronstein variation176947.7%55.3%
E56Nimzo-Indian, 4.e3, main line with 7...Nc630552.8%55.9%
E57Nimzo-Indian, 4.e3, main line with 8...dc and 9...cd333.3%16.7%
E58Nimzo-Indian, 4.e3, main line with 8...Bxc3139544.7%53.0%
E59Nimzo-Indian, 4.e3, main line72443.6%53.2%
E60King's Indian defence54834.9%57.0%
E60King's Indian, 3.Nf3252339.3%57.9%
E60King's Indian, 3.g3138341.9%56.3%
E60King's Indian, 3.g3, counterthrust variation911.1%27.8%
E60King's Indian, Anti-Gruenfeld4434.1%60.2%
E60Queen's pawn, Mengarini attack3531.4%61.4%
E61King's Indian defence, 3.Nc370937.7%55.6%
E61King's Indian, Smyslov system7938.0%53.2%
E62King's Indian, fianchetto variation5836.2%49.1%
E62King's Indian, fianchetto with ...Nc621735.5%54.6%
E62King's Indian, fianchetto, Kavalek (Bronstein) variation53032.3%60.7%
E62King's Indian, fianchetto, Larsen system25742.4%62.1%
E62King's Indian, fianchetto, Simagin variation8135.8%63.6%
E62King's Indian, fianchetto, Uhlmann (Szabo) variation24732.0%58.9%
E62King's Indian, fianchetto, lesser Simagin (Spassky) variation25637.9%60.0%
E63King's Indian, fianchetto, Panno variation205837.3%57.2%
E64King's Indian, fianchetto, Yugoslav system8836.4%59.1%
E65King's Indian, fianchetto, Yugoslav, 7.O-O15950.3%52.2%
E66King's Indian, fianchetto, Yugoslav Panno30133.9%56.8%
E67King's Indian, fianchetto with ...Nd77537.3%53.3%
E67King's Indian, fianchetto, classical variation46439.9%55.3%
E68King's Indian, fianchetto, classical variation, 8.e4115638.4%60.3%
E69King's Indian, fianchetto, classical main line41733.8%61.3%
E70King's Indian, 4.e483533.3%58.7%
E70King's Indian, Kramer system31429.6%57.8%
E70King's Indian, accelerated Averbakh system10334.0%55.8%
E71King's Indian, Makagonov system (5.h3)63734.2%59.5%
E72King's Indian with e4 & g35435.2%56.5%
E72King's Indian, Pomar system812.5%56.3%
E73King's Indian, 5.Be23141.9%59.7%
E73King's Indian, Averbakh system85332.5%54.7%
E73King's Indian, Semi-Averbakh system2642.3%55.8%
E74King's Indian, Averbakh, 6...c523334.8%56.0%
E75King's Indian, Averbakh, main line4626.1%58.7%
E76King's Indian, Four pawns attack21036.7%60.7%
E76King's Indian, Four pawns attack, dynamic line14635.6%53.4%
E77King's Indian, Four pawns attack10332.0%57.8%
E77King's Indian, Four pawns attack, 6.Be21450.0%53.6%
E77King's Indian, Four pawns attack, Florentine gambit2100.0%50.0%
E78King's Indian, Four pawns attack, with Be2 and Nf3540.0%60.0%
E79King's Indian, Four pawns attack, main line60.0%66.7%
E80King's Indian, Saemisch variation29633.8%57.8%
E81King's Indian, Saemisch, 5...O-O191434.0%54.9%
E81King's Indian, Saemisch, Byrne variation7740.3%53.9%
E82King's Indian, Saemisch, double fianchetto variation8931.5%58.4%
E83King's Indian, Saemisch, 6...Nc65427.8%47.2%
E83King's Indian, Saemisch, Panno formation17542.3%56.6%
E83King's Indian, Saemisch, Ruban variation1136.4%45.5%
E84King's Indian, Saemisch, Panno main line38037.4%52.6%
E85King's Indian, Saemisch, orthodox variation5034.0%51.0%
E86King's Indian, Saemisch, orthodox, 7.Nge2 c632828.4%53.5%
E87King's Indian, Saemisch, orthodox, 7.d524327.6%59.5%
E87King's Indian, Saemisch, orthodox, Bronstein variation1100.0%50.0%
E88King's Indian, Saemisch, orthodox, 7.d5 c629732.3%57.9%
E89King's Indian, Saemisch, orthodox main line2832.1%62.5%
E90King's Indian, 5.Nf377433.3%56.8%
E90King's Indian, Larsen variation7940.5%60.8%
E90King's Indian, Zinnowitz variation3050.0%55.0%
E91King's Indian, 6.Be255632.9%64.3%
E91King's Indian, Kazakh variation28836.8%55.6%
E92King's Indian, Andersson variation25453.5%50.4%
E92King's Indian, Gligoric-Taimanov system138733.5%58.5%
E92King's Indian, Petrosian system8129.6%50.6%
E92King's Indian, Petrosian system, Stein variation52332.7%53.3%
E92King's Indian, classical variation2536.0%38.0%
E93King's Indian, Petrosian system, main line7634.2%50.0%
E94King's Indian, orthodox variation95536.6%54.5%
E94King's Indian, orthodox, 7...Nbd786033.4%60.8%
E94King's Indian, orthodox, Donner variation15438.3%59.4%
E95King's Indian, orthodox, 7...Nbd7, 8.Re131235.3%55.8%
E96King's Indian, orthodox, 7...Nbd7, main line3941.0%59.0%
E97King's Indian, orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation)385732.9%56.2%
E97King's Indian, orthodox, Aronin-Taimanov, bayonet attack121535.4%58.4%
E98King's Indian, orthodox, Aronin-Taimanov, 9.Ne183926.8%61.1%
E99King's Indian, orthodox, Aronin-Taimanov, Benko attack5322.6%66.0%
E99King's Indian, orthodox, Aronin-Taimanov, main line1729.4%61.8%

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