CCRL 40/40
Downloads and Statistics
March 16, 2019
Testing summary:
Total: 1'004'662 games
played by 2'384 programs
138170 CPU days (X2 4600+)

White wins: 348'320 (34.7%)
Black wins: 258'847 (25.8%)
Draws: 397'495 (39.6%)
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 attack30.0%100.0%
A00Anderssen's opening46141.4%50.4%
A00Anti-Borg (Desprez) opening50.0%40.0%
A00Battambang opening1838.9%47.2%
A00Benko's opening827240.5%52.0%
A00Benko's opening, reversed Alekhine12042.5%47.9%
A00Clemenz (Mead's, Basman's or de Klerk's) opening4637.0%40.2%
A00Dunst (Sleipner, Heinrichsen) opening216135.9%49.5%
A00Durkin's attack1030.0%45.0%
A00Global opening425.0%62.5%
A00Grob's attack19342.5%35.2%
A00Grob, Fritz gambit5343.4%27.4%
A00Grob, Romford counter-gambit425.0%62.5%
A00Grob, spike attack633.3%33.3%
A00Lasker simul special333.3%50.0%
A00Mieses opening19130.4%51.3%
A00Novosibirsk opening2634.6%51.9%
A00Polish (Sokolsky) opening222338.8%48.3%
A00Polish, Outflank variation17140.9%48.5%
A00Saragossa opening41528.9%50.8%
A00Van't Kruijs opening54740.0%51.1%
A00Ware (Meadow Hay) opening1040.0%50.0%
A01Nimzovich-Larsen attack86536.4%52.7%
A01Nimzovich-Larsen attack, Dutch variation2821.4%57.1%
A01Nimzovich-Larsen attack, English variation39833.4%49.4%
A01Nimzovich-Larsen attack, Indian variation48436.0%48.8%
A01Nimzovich-Larsen attack, Polish variation425.0%62.5%
A01Nimzovich-Larsen attack, classical variation168634.0%49.4%
A01Nimzovich-Larsen attack, modern variation380938.8%50.6%
A01Nimzovich-Larsen attack, symmetrical variation79039.7%49.7%
A02Bird's opening358535.5%49.1%
A02Bird's opening, Swiss gambit250.0%75.0%
A02Bird, From gambit25033.6%52.4%
A02Bird, From gambit, Lasker variation2955.2%58.6%
A02Bird, From gambit, Lipke variation10.0%0.0%
A02Bird, Hobbs gambit560.0%70.0%
A03Bird's opening341234.8%47.7%
A03Bird's opening, Lasker variation12029.2%47.1%
A03Bird's opening, Williams gambit4535.6%55.6%
A03Mujannah opening450.0%25.0%
A04Reti opening975637.2%54.5%
A04Reti v Dutch146032.3%57.5%
A04Reti, Herrstroem gambit20.0%100.0%
A04Reti, Lisitsin gambit deferred3225.0%71.9%
A04Reti, Pirc-Lisitsin gambit13927.3%48.2%
A04Reti, Wade defence20.0%50.0%
A05Reti opening470836.0%53.1%
A05Reti, King's Indian attack148439.5%53.5%
A05Reti, King's Indian attack, Reti-Smyslov variation12032.5%50.4%
A05Reti, King's Indian attack, Spassky's variation53440.8%52.2%
A06Reti opening82736.4%52.7%
A06Reti, Nimzovich-Larsen attack398739.4%49.7%
A06Reti, old Indian attack14829.1%47.0%
A06Santasiere's folly15840.5%44.9%
A06Tennison (Lemberg, Zukertort) gambit4240.5%51.2%
A07Reti, King's Indian attack264340.9%53.1%
A07Reti, King's Indian attack (Barcza system)608940.1%53.4%
A07Reti, King's Indian attack (with ...c5)22638.9%50.0%
A07Reti, King's Indian attack, Keres variation90335.2%54.9%
A07Reti, King's Indian attack, Pachman system15538.1%51.3%
A07Reti, King's Indian attack, Yugoslav variation184740.1%53.2%
A08Reti, King's Indian attack66340.9%52.7%
A08Reti, King's Indian attack, French variation28338.2%49.8%
A09Reti accepted39138.6%52.6%
A09Reti accepted, Keres variation5626.8%67.0%
A09Reti opening80738.2%53.5%
A09Reti, advance variation124136.0%48.9%
A10English opening361036.1%54.9%
A10English, Adorjan defence59738.5%53.3%
A10English, Anglo-Dutch defense97231.9%51.7%
A10English, Jaenisch gambit20.0%100.0%
A11English, Caro-Kann defensive system173038.9%53.3%
A12English, Bled variation2737.0%48.1%
A12English, Capablanca's variation9436.2%47.9%
A12English, Caro-Kann defensive system26734.5%50.6%
A12English, Caro-Kann defensive system, Bogolyubov variation13046.9%54.2%
A12English, London defensive system14342.7%51.4%
A12English, New York (London) defensive system5343.4%44.3%
A12English, Torre defensive system8042.5%55.0%
A13English opening251535.8%52.6%
A13English opening, Agincourt variation165638.4%54.6%
A13English, Kurajica defence14035.7%59.3%
A13English, Neo-Catalan90439.9%52.4%
A13English, Neo-Catalan accepted133945.6%55.7%
A13English, Romanishin gambit36340.8%57.0%
A13English, Wimpey system16842.9%49.4%
A14English, Neo-Catalan declined97343.1%54.4%
A14English, Symmetrical, Keres defence55147.5%57.0%
A15English opening1321442.6%53.5%
A15English, 1...Nf6 (Anglo-Indian defense)147338.2%54.8%
A16English opening162634.6%53.8%
A16English, Anglo-Gruenfeld defense32741.3%54.0%
A16English, Anglo-Gruenfeld defense, Korchnoi variation9638.5%55.7%
A16English, Anglo-Gruenfeld, Czech defense23135.9%60.4%
A16English, Anglo-Gruenfeld, Smyslov defense16732.9%57.2%
A17English opening26937.5%52.6%
A17English, Nimzo-English opening220838.0%53.6%
A17English, Queens Indian formation28536.1%59.1%
A17English, Queens Indian, Romanishin variation8632.6%57.0%
A18English, Mikenas-Carls variation28239.0%57.8%
A18English, Mikenas-Carls, Flohr variation41339.7%58.8%
A18English, Mikenas-Carls, Kevitz variation2835.7%46.4%
A19English, Mikenas-Carls, Sicilian variation58738.5%54.3%
A20English opening688837.4%54.0%
A20English, Nimzovich variation11732.5%56.4%
A20English, Nimzovich, Flohr variation18336.1%46.4%
A21English opening190531.6%56.1%
A21English, Keres variation1225.0%45.8%
A21English, Kramnik-Shirov counterattack271438.1%52.0%
A21English, Smyslov defence5623.2%61.6%
A21English, Troeger defence15727.4%54.5%
A22English opening86536.2%50.6%
A22English, Bellon gambit4327.9%58.1%
A22English, Bremen, Smyslov system179638.4%48.6%
A22English, Bremen, reverse dragon72340.7%51.2%
A22English, Carls' Bremen system54338.7%54.0%
A23English, Bremen system, Keres variation71238.8%48.7%
A24English, Bremen system with ...g620937.3%47.4%
A25English, Sicilian reversed104932.9%53.3%
A25English, closed system83334.0%54.0%
A25English, closed system (without ...d6)13028.5%55.0%
A25English, closed, 5.Rb153238.3%52.4%
A25English, closed, 5.Rb1 Taimanov variation825.0%50.0%
A25English, closed, Hort variation3834.2%53.9%
A25English, closed, Taimanov variation3020.0%63.3%
A26English, Botvinnik system36136.3%53.0%
A26English, closed system37736.9%50.5%
A27English, three knights system113231.1%52.6%
A28English, Bradley Beach variation6222.6%38.7%
A28English, Nenarokov variation12040.0%51.7%
A28English, four knights system39842.7%52.3%
A28English, four knights, 4.e3121536.9%52.5%
A28English, four knights, Capablanca variation55636.9%53.9%
A28English, four knights, Marini variation101239.3%50.5%
A28English, four knights, Nimzovich variation70134.2%55.5%
A28English, four knights, Romanishin variation49950.1%51.9%
A28English, four knights, Stean variation8741.4%59.8%
A29English, four knights, kingside fianchetto668941.0%52.0%
A30English, symmetrical variation381738.7%54.5%
A30English, symmetrical, hedgehog system280046.8%55.9%
A30English, symmetrical, hedgehog, flexible formation18242.9%54.4%
A31English, symmetrical, Benoni formation124238.2%56.0%
A32English, symmetrical variation58741.1%55.1%
A33English, symmetrical variation179747.0%54.2%
A33English, symmetrical, Geller variation68939.2%54.0%
A34English, symmetrical variation133039.0%53.8%
A34English, symmetrical, Rubinstein system41538.1%53.3%
A34English, symmetrical, three knights system147943.1%54.7%
A35English, symmetrical variation33534.6%50.4%
A35English, symmetrical, four knights system239843.6%53.5%
A36English, symmetrical variation12534.4%52.4%
A36English, symmetrical, Botvinnik system17935.2%50.0%
A36English, symmetrical, Botvinnik system reversed9538.9%56.3%
A36English, ultra-symmetrical variation168137.6%52.7%
A37English, symmetrical variation116840.2%50.8%
A37English, symmetrical, Botvinnik system reversed86238.4%51.8%
A38English, symmetrical variation61244.0%54.7%
A38English, symmetrical, main line with b31100.0%50.0%
A38English, symmetrical, main line with d317343.9%54.3%
A39English, symmetrical, main line with d456239.9%56.4%
A40Beefeater defence4231.0%63.1%
A40Modern defence140335.6%57.2%
A40Polish defence10433.7%57.2%
A40Queen's pawn303334.7%54.9%
A40Queen's pawn, Charlick (Englund) gambit3043.3%58.3%
A40Queen's pawn, English defence28539.6%59.5%
A40Queen's pawn, Franco-Indian (Keres) defence161736.6%56.2%
A40Queen's pawn, Keres defence217442.1%56.0%
A40Queen's pawn, Lundin (Kevitz-Mikenas) defence25026.4%56.0%
A41Modern defence12028.3%55.8%
A41Old Indian defence123031.5%54.0%
A41Old Indian, Tartakower (Wade) variation140933.9%59.2%
A41Queen's Pawn247934.7%55.0%
A41Robatsch defence, Rossolimo variation18134.3%52.5%
A42Modern defence, Averbakh system61231.7%57.8%
A42Modern defence, Averbakh system, Kotov variation14426.4%61.8%
A42Modern defence, Averbakh system, Randspringer variation137.7%73.1%
A42Pterodactyl defence33837.0%63.5%
A43Hawk (Habichd) defence366.7%33.3%
A43Old Benoni defence209633.6%57.1%
A43Old Benoni, Franco-Benoni defence16536.4%60.6%
A43Old Benoni, Mujannah formation7133.8%62.0%
A43Old Benoni, Schmid's system3528.6%57.1%
A43Woozle defence80.0%75.0%
A44Old Benoni defence4829.2%58.3%
A44Semi-Benoni (`blockade variation')33927.7%60.5%
A45Blackmar-Diemer gambit23027.8%50.9%
A45Canard opening1729.4%38.2%
A45Paleface attack4035.0%47.5%
A45Queen's pawn game320836.1%54.0%
A45Queen's pawn, Bronstein gambit1233.3%50.0%
A45Trompovsky attack (Ruth, Opovcensky opening)560934.1%53.0%
A46Queen's pawn game422038.6%54.5%
A46Queen's pawn, Torre attack174935.7%52.0%
A46Queen's pawn, Torre attack, Wagner gambit2133.3%50.0%
A46Queen's pawn, Yusupov-Rubinstein system96039.4%52.6%
A47Queen's Indian defence63036.5%51.4%
A47Queen's Indian, Marienbad system10338.8%54.4%
A47Queen's Indian, Marienbad system, Berg variation1952.6%57.9%
A48King's Indian, East Indian defence109938.8%52.0%
A48King's Indian, London system139737.0%53.3%
A48King's Indian, Torre attack197538.5%49.9%
A49King's Indian, fianchetto without c4143739.2%56.1%
A50Kevitz-Trajkovich defence56532.7%55.8%
A50Queen's Indian accelerated28741.8%58.5%
A50Queen's pawn game91436.9%56.0%
A51Budapest defence declined1553.3%66.7%
A51Budapest, Fajarowicz variation28637.4%57.2%
A51Budapest, Fajarowicz, Steiner variation3638.9%44.4%
A52Budapest defence5036.0%50.0%
A52Budapest, Adler variation29343.3%55.8%
A52Budapest, Alekhine variation2231.8%65.9%
A52Budapest, Alekhine variation, Balogh gambit1100.0%50.0%
A52Budapest, Alekhine, Abonyi variation6627.3%60.6%
A52Budapest, Rubinstein variation42241.2%60.9%
A53Old Indian defence129737.3%57.9%
A53Old Indian, Janowski variation18035.6%54.4%
A54Old Indian, Dus-Khotimirsky variation2030.0%35.0%
A54Old Indian, Ukrainian variation16141.0%52.8%
A54Old Indian, Ukrainian variation, 4.Nf335835.2%55.9%
A55Old Indian, main line52136.5%58.5%
A56Benoni defence83833.4%59.7%
A56Benoni defence, Hromodka system53025.7%64.3%
A56Czech Benoni defence36627.0%66.3%
A56Czech Benoni, King's Indian system6018.3%62.5%
A56Vulture defence1100.0%50.0%
A57Benko gambit95634.7%55.8%
A57Benko gambit half accepted100337.7%57.9%
A57Benko gambit, Zaitsev system11236.6%49.6%
A58Benko gambit accepted82734.2%58.5%
A58Benko gambit, Nd2 variation1241.7%62.5%
A58Benko gambit, fianchetto variation16145.3%61.2%
A59Benko gambit4643.5%60.9%
A59Benko gambit, 7.e43743.2%51.4%
A59Benko gambit, Ne2 variation1533.3%43.3%
A59Benko gambit, main line14741.5%67.7%
A60Benoni defence23023.5%56.1%
A61Benoni defence57632.5%62.1%
A61Benoni, Nimzovich (knight's tour) variation48028.1%58.4%
A61Benoni, Uhlmann variation21021.9%40.5%
A61Benoni, fianchetto variation5228.8%60.6%
A62Benoni, fianchetto variation120134.7%56.5%
A63Benoni, fianchetto, 9...Nbd714637.7%66.1%
A64Benoni, fianchetto, 11...Re821939.7%49.1%
A65Benoni, 6.e443930.3%56.6%
A66Benoni, Mikenas variation2714.8%51.9%
A66Benoni, pawn storm variation540.0%60.0%
A67Benoni, Taimanov variation29327.6%61.9%
A68Benoni, four pawns attack9931.3%60.1%
A69Benoni, four pawns attack, main line11839.8%52.1%
A70Benoni, classical with e4 and Nf365739.6%58.8%
A70Benoni, classical without 9.O-O1414.3%50.0%
A71Benoni, classical, 8.Bg513432.8%56.0%
A72Benoni, classical without 9.O-O7847.4%63.5%
A73Benoni, classical, 9.O-O10933.9%56.4%
A74Benoni, classical, 9...a6, 10.a43339.4%68.2%
A75Benoni, classical with ...a6 and 10...Bg412730.7%62.6%
A76Benoni, classical, 9...Re816640.4%64.8%
A77Benoni, classical, 9...Re8, 10.Nd219832.3%64.6%
A78Benoni, classical with ...Re8 and ...Na611132.4%60.4%
A79Benoni, classical, 11.f39229.3%60.3%
A80Dutch291934.3%54.5%
A80Dutch, 2.Bg5 variation139632.3%54.5%
A80Dutch, Korchnoi attack5225.0%49.0%
A80Dutch, Krejcik gambit30233.4%53.8%
A80Dutch, Manhattan (Alapin, Ulvestad) variation3531.4%58.6%
A80Dutch, Spielmann gambit20.0%50.0%
A81Dutch defence396037.4%56.3%
A81Dutch defence, Blackburne variation7030.0%52.1%
A81Dutch, Leningrad, Basman system862.5%68.8%
A81Dutch, Leningrad, Karlsbad variation1060.0%50.0%
A82Dutch, Balogh defence1838.9%69.4%
A82Dutch, Staunton gambit18733.7%42.0%
A82Dutch, Staunton gambit, Tartakower variation1414.3%57.1%
A83Dutch, Staunton gambit, Alekhine variation333.3%50.0%
A83Dutch, Staunton gambit, Chigorin variation8929.2%52.8%
A83Dutch, Staunton gambit, Lasker variation2737.0%55.6%
A83Dutch, Staunton gambit, Nimzovich variation20.0%0.0%
A83Dutch, Staunton gambit, Staunton's line21337.1%48.6%
A84Dutch defence73237.0%56.4%
A84Dutch defence, Rubinstein variation40733.2%57.4%
A84Dutch, Staunton gambit deferred955.6%27.8%
A85Dutch with c4 & Nc384333.0%54.3%
A86Dutch with c4 & g315435.1%60.4%
A86Dutch, Hort-Antoshin system1040.0%60.0%
A86Dutch, Leningrad variation24437.7%58.2%
A87Dutch, Leningrad, main variation47839.5%54.3%
A88Dutch, Leningrad, main variation with c6101939.5%58.6%
A89Dutch, Leningrad, main variation with Nc648534.4%62.6%
A90Dutch defence119837.8%60.4%
A90Dutch defence, Dutch-Indian (Nimzo-Dutch) variation26835.4%60.3%
A90Dutch-Indian, Alekhine variation7931.6%57.6%
A91Dutch defence18931.7%51.9%
A92Dutch defence12040.0%60.8%
A92Dutch defence, Alekhine variation4940.8%59.2%
A92Dutch, stonewall variation12440.3%59.7%
A92Dutch, stonewall with Nc32944.8%46.6%
A93Dutch, stonewall, Botwinnik variation22536.4%60.4%
A94Dutch, stonewall with Ba310341.7%57.8%
A95Dutch, stonewall with Nc327731.4%59.0%
A95Dutch, stonewall: Chekhover variation1100.0%50.0%
A96Dutch, classical variation40934.2%58.7%
A97Dutch, Ilyin-Genevsky variation13239.4%54.5%
A97Dutch, Ilyin-Genevsky, Winter variation15435.1%63.6%
A98Dutch, Ilyin-Genevsky variation with Qc215125.2%58.3%
A99Dutch, Ilyin-Genevsky variation with b329135.7%60.1%
B00Barnes defence250.0%75.0%
B00Carr's defence450.0%50.0%
B00Corn stalk defence250.0%25.0%
B00Fred80.0%75.0%
B00KP, Colorado counter425.0%62.5%
B00KP, Nimzovich defence79531.8%58.1%
B00KP, Nimzovich defence, Bogolyubov variation13229.5%59.5%
B00KP, Nimzovich defence, Marshall gambit20.0%50.0%
B00King's pawn opening217534.3%56.3%
B00Lemming defence1233.3%58.3%
B00Owen defence40032.3%60.6%
B00Reversed Grob (Borg/Basman defence/macho Grob)3225.0%71.9%
B00St. George (Baker) defence4632.6%59.8%
B01Scandinavian (centre counter) defence312439.2%57.3%
B01Scandinavian defence132738.4%58.7%
B01Scandinavian defence, Gruenfeld variation40.0%75.0%
B01Scandinavian defence, Lasker variation11833.1%64.0%
B01Scandinavian gambit18342.6%54.1%
B01Scandinavian, Anderssen counter-attack orthodox attack10.0%100.0%
B01Scandinavian, Anderssen counter-attack, Collijn variation10.0%100.0%
B01Scandinavian, Icelandic gambit6645.5%56.1%
B01Scandinavian, Kiel variation728.6%85.7%
B01Scandinavian, Marshall variation63844.4%59.0%
B01Scandinavian, Mieses-Kotrvc gambit955.6%50.0%
B01Scandinavian, Pytel-Wade variation303243.6%58.2%
B01Scandinavian, Richter variation633.3%83.3%
B02Alekhine's defence70334.1%54.3%
B02Alekhine's defence, Brooklyn defence714.3%35.7%
B02Alekhine's defence, Kmoch variation1118.2%27.3%
B02Alekhine's defence, Krejcik variation1435.7%39.3%
B02Alekhine's defence, Maroczy variation12234.4%58.2%
B02Alekhine's defence, Saemisch attack37035.7%50.0%
B02Alekhine's defence, Scandinavian variation39037.2%54.7%
B02Alekhine's defence, Spielmann variation2123.8%45.2%
B02Alekhine's defence, Steiner variation1526.7%46.7%
B02Alekhine's defence, Two pawns' (Lasker's) attack36840.2%53.5%
B02Alekhine's defence, Welling variation616.7%25.0%
B03Alekhine's defence14835.1%60.1%
B03Alekhine's defence, Balogh variation3630.6%56.9%
B03Alekhine's defence, exchange variation75339.2%58.2%
B03Alekhine's defence, exchange, Karpov variation1163.6%50.0%
B03Alekhine's defence, four pawns attack25631.3%65.2%
B03Alekhine's defence, four pawns attack, 6...Nc61838.9%41.7%
B03Alekhine's defence, four pawns attack, 7.Be314336.4%69.9%
B03Alekhine's defence, four pawns attack, Ilyin-Genevsky var.742.9%21.4%
B03Alekhine's defence, four pawns attack, Planinc variation1136.4%36.4%
B03Alekhine's defence, four pawns attack, Trifunovic variation8334.9%68.1%
B03Alekhine's defence, four pawns attack, fianchetto variation12631.7%60.3%
B04Alekhine's defence, modern variation28935.3%61.2%
B04Alekhine's defence, modern, Keres variation6333.3%70.6%
B04Alekhine's defence, modern, Larsen variation95942.2%59.7%
B04Alekhine's defence, modern, Schmid variation16038.8%60.0%
B04Alekhine's defence, modern, fianchetto variation80236.5%56.7%
B05Alekhine's defence, modern variation, 4...Bg472632.1%64.3%
B05Alekhine's defence, modern, Alekhine variation837.5%43.8%
B05Alekhine's defence, modern, Flohr variation17537.7%60.6%
B05Alekhine's defence, modern, Panov variation2540.0%48.0%
B05Alekhine's defence, modern, Vitolins attack2842.9%50.0%
B06Norwegian defence475.0%37.5%
B06Robatsch (modern) defence755235.1%56.2%
B06Robatsch defence92234.7%58.6%
B06Robatsch defence, Gurgenidze variation8333.7%62.7%
B06Robatsch defence, Pseudo-Austrian attack56835.0%54.7%
B06Robatsch defence, Two knights variation37232.8%59.7%
B06Robatsch defence, Two knights, Suttles variation107437.5%58.1%
B06Robatsch defence, three pawns attack17526.9%60.3%
B07Pirc defence218435.9%55.8%
B07Pirc, 150 attack28837.5%62.2%
B07Pirc, Byrne variation49332.5%56.2%
B07Pirc, Chinese variation650.0%41.7%
B07Pirc, Holmov system6241.9%56.5%
B07Pirc, Sveshnikov system35535.5%53.0%
B07Pirc, Ufimtsev-Pytel variation55934.3%57.6%
B07Pirc, bayonet (Mariotti) attack4143.9%58.5%
B07Robatsch defence, Geller's system67437.1%57.3%
B08Pirc, classical (two knights) system75236.3%59.0%
B08Pirc, classical system, 5.Be2265537.7%57.9%
B08Pirc, classical, h3 system47937.2%59.3%
B09Pirc, Austrian attack21139.8%61.1%
B09Pirc, Austrian attack, 6.Bd3129739.6%60.1%
B09Pirc, Austrian attack, 6.Be337431.8%56.6%
B09Pirc, Austrian attack, 6.e510743.0%57.0%
B09Pirc, Austrian attack, Ljubojevic variation2630.8%50.0%
B09Pirc, Austrian attack, dragon formation81738.8%57.8%
B10Caro-Kann defence261934.3%52.6%
B10Caro-Kann, Goldman (Spielmann) variation12937.2%49.6%
B10Caro-Kann, Hillbilly attack20.0%50.0%
B10Caro-Kann, Two knights variation56535.4%57.9%
B10Caro-Kann, anti-Caro-Kann defence70931.9%60.4%
B10Caro-Kann, anti-anti-Caro-Kann defence148047.8%52.1%
B10Caro-Kann, closed (Breyer) variation109036.8%52.8%
B11Caro-Kann, Two knights, 3...Bg4113639.5%55.6%
B12Caro-Kann defence30632.4%56.0%
B12Caro-Kann, 3.Nd219836.9%59.3%
B12Caro-Kann, Edinburgh variation6738.8%56.7%
B12Caro-Kann, Tartakower (fantasy) variation84736.8%56.0%
B12Caro-Kann, advance variation1180538.0%56.2%
B12Caro-Kann, advance, Short variation5628.6%58.9%
B12Caro-Masi defence1100.0%50.0%
B12de Bruycker defence175.9%55.9%
B13Caro-Kann, Panov-Botvinnik attack118246.5%53.0%
B13Caro-Kann, Panov-Botvinnik, Czerniak variation4835.4%46.9%
B13Caro-Kann, Panov-Botvinnik, Gunderam attack1833.3%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 variation12548.8%57.2%
B13Caro-Kann, exchange variation106839.3%51.9%
B13Caro-Kann, exchange, Rubinstein variation16437.2%53.4%
B14Caro-Kann, Panov-Botvinnik attack, 5...e6201546.6%55.5%
B14Caro-Kann, Panov-Botvinnik attack, 5...g636150.4%52.1%
B15Caro-Kann defence27630.8%54.2%
B15Caro-Kann, Alekhine gambit3135.5%46.8%
B15Caro-Kann, Forgacs variation25442.1%55.7%
B15Caro-Kann, Gurgenidze counter-attack757.1%57.1%
B15Caro-Kann, Gurgenidze system41037.1%56.3%
B15Caro-Kann, Rasa-Studier gambit1513.3%26.7%
B15Caro-Kann, Tartakower (Nimzovich) variation40040.5%55.5%
B16Caro-Kann, Bronstein-Larsen variation55631.5%60.9%
B17Caro-Kann, Steinitz variation404943.1%53.4%
B18Caro-Kann, classical variation177144.8%54.9%
B18Caro-Kann, classical, 6.h463741.9%54.7%
B18Caro-Kann, classical, Flohr variation11250.9%52.2%
B18Caro-Kann, classical, Maroczy attack1216.7%41.7%
B19Caro-Kann, classical, 7...Nd738850.0%52.8%
B19Caro-Kann, classical, Spassky variation274840.0%56.4%
B20Sicilian defence293134.1%50.1%
B20Sicilian, Gloria variation1225.0%45.8%
B20Sicilian, Keres variation (2.Ne2)85937.5%53.3%
B20Sicilian, Steinitz variation52939.1%50.6%
B20Sicilian, wing gambit7642.1%42.1%
B20Sicilian, wing gambit, Carlsbad variation2748.1%50.0%
B20Sicilian, wing gambit, Marienbad variation10.0%0.0%
B20Sicilian, wing gambit, Marshall variation8630.2%53.5%
B21Sicilian, Andreaschek gambit1442.9%57.1%
B21Sicilian, Grand Prix attack177234.4%52.4%
B21Sicilian, Smith-Morra gambit94040.5%47.9%
B22Sicilian, 2.c3, Heidenfeld variation6026.7%46.7%
B22Sicilian, Alapin's variation (2.c3)714442.7%54.5%
B23Sicilian, Grand Prix attack89336.7%49.4%
B23Sicilian, Grand Prix attack, Schofman variation15841.1%52.2%
B23Sicilian, chameleon variation77034.4%57.2%
B23Sicilian, closed409536.4%51.6%
B23Sicilian, closed, 2...Nc6217138.7%52.7%
B23Sicilian, closed, Korchnoi variation20747.3%50.2%
B24Sicilian, closed54635.0%50.8%
B24Sicilian, closed, Smyslov variation2528.0%58.0%
B25Sicilian, closed34935.8%50.3%
B25Sicilian, closed, 6.Ne2 e5 (Botvinnik)6833.8%52.2%
B25Sicilian, closed, 6.f448139.1%50.1%
B25Sicilian, closed, 6.f4 e5 (Botvinnik)3444.1%60.3%
B26Sicilian, closed, 6.Be373232.4%49.8%
B27Sicilian defence4332.6%62.8%
B27Sicilian, Hungarian variation368239.9%57.7%
B27Sicilian, Katalimov variation17841.0%58.7%
B27Sicilian, Quinteros variation6238.7%61.3%
B27Sicilian, Stiletto (Althouse) variation250.0%25.0%
B28Sicilian, O'Kelly variation73436.0%57.8%
B29Sicilian, Nimzovich-Rubinstein variation104140.7%58.3%
B29Sicilian, Nimzovich-Rubinstein; Rubinstein counter-gambit4751.1%53.2%
B30Sicilian defence328639.4%54.6%
B30Sicilian, Nimzovich-Rossolimo attack (without ...d6)544037.6%56.4%
B31Sicilian, Nimzovich-Rossolimo attack (with ...g6, without ...d6)347840.2%56.0%
B31Sicilian, Nimzovich-Rossolimo attack, Gurgenidze variation3946.2%51.3%
B32Sicilian defence99438.9%55.6%
B32Sicilian, Flohr variation29235.3%59.8%
B32Sicilian, Labourdonnais-Loewenthal (Kalashnikov) variation136440.2%56.6%
B32Sicilian, Labourdonnais-Loewenthal variation27639.1%58.7%
B32Sicilian, Nimzovich variation2934.5%55.2%
B33Sicilian defence51337.8%54.6%
B33Sicilian, Pelikan (Lasker/Sveshnikov) variation113035.1%54.8%
B33Sicilian, Pelikan, Bird variation24037.9%63.1%
B33Sicilian, Pelikan, Chelyabinsk variation221736.4%57.1%
B33Sicilian, Sveshnikov variation147438.5%50.9%
B34Sicilian, accelerated fianchetto, exchange variation3638.9%50.0%
B34Sicilian, accelerated fianchetto, modern variation45636.8%51.8%
B35Sicilian, accelerated fianchetto, modern variation with Bc4214543.2%53.6%
B36Sicilian, accelerated fianchetto, Gurgenidze variation30146.2%60.6%
B36Sicilian, accelerated fianchetto, Maroczy bind103044.6%57.8%
B37Sicilian, accelerated fianchetto, Maroczy bind, 5...Bg720242.1%55.7%
B37Sicilian, accelerated fianchetto, Simagin variation2100.0%50.0%
B38Sicilian, accelerated fianchetto, Maroczy bind, 6.Be3113143.2%57.3%
B39Sicilian, accelerated fianchetto, Breyer variation66841.0%58.2%
B40Sicilian defence653137.4%54.0%
B40Sicilian, Anderssen variation89340.2%57.2%
B40Sicilian, Marshall variation10.0%100.0%
B40Sicilian, Pin variation (Sicilian counter-attack)3129.0%66.1%
B40Sicilian, Pin, Jaffe variation40.0%100.0%
B40Sicilian, Pin, Koch variation5427.8%78.7%
B41Sicilian, Kan variation23941.0%55.2%
B41Sicilian, Kan, Maroczy bind (Reti variation)56934.4%59.2%
B41Sicilian, Kan, Maroczy bind - Bronstein variation2330.4%32.6%
B42Sicilian, Kan, 5.Bd3218338.5%57.9%
B42Sicilian, Kan, Gipslis variation8038.8%63.1%
B42Sicilian, Kan, Polugaievsky variation159836.7%54.4%
B42Sicilian, Kan, Swiss cheese variation30534.1%61.0%
B43Sicilian, Kan, 5.Nc3343039.1%56.1%
B44Sicilian defence36742.8%51.9%
B44Sicilian, Szen (`anti-Taimanov') variation90640.8%53.4%
B44Sicilian, Szen variation, Dely-Kasparov gambit2360.9%60.9%
B44Sicilian, Szen, hedgehog variation23640.7%50.8%
B45Sicilian, Taimanov variation216238.2%56.5%
B45Sicilian, Taimanov, American attack1942.1%42.1%
B46Sicilian, Taimanov variation340738.1%55.6%
B47Sicilian, Taimanov (Bastrikov) variation412641.6%54.3%
B48Sicilian, Taimanov variation364437.0%56.1%
B49Sicilian, Taimanov variation70445.0%57.6%
B50Sicilian516439.3%52.7%
B50Sicilian, wing gambit deferred3129.0%43.5%
B51Sicilian, Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack206937.2%54.9%
B52Sicilian, Canal-Sokolsky attack, 3...Bd7205641.1%50.9%
B52Sicilian, Canal-Sokolsky attack, Bronstein gambit20340.4%57.6%
B52Sicilian, Canal-Sokolsky attack, Sokolsky variation92443.7%55.1%
B53Sicilian, Chekhover variation165641.0%51.8%
B53Sicilian, Chekhover, Zaitsev variation9231.5%57.1%
B54Sicilian109735.6%54.5%
B54Sicilian, Prins (Moscow) variation62538.2%57.0%
B55Sicilian, Prins variation, Venice attack8741.4%52.9%
B56Sicilian187039.0%53.4%
B56Sicilian, Venice attack7035.7%63.6%
B57Sicilian, Magnus Smith trap1145.5%40.9%
B57Sicilian, Sozin, Benko variation134939.2%51.6%
B57Sicilian, Sozin, not Scheveningen27642.0%55.4%
B58Sicilian, Boleslavsky variation45636.6%48.1%
B58Sicilian, Boleslavsky, Louma variation5137.3%57.8%
B58Sicilian, classical23543.8%48.7%
B59Sicilian, Boleslavsky variation, 7.Nb316845.2%53.0%
B60Sicilian, Richter-Rauzer81135.8%58.6%
B60Sicilian, Richter-Rauzer, Bondarevsky variation3751.4%63.5%
B60Sicilian, Richter-Rauzer, Larsen variation17230.8%59.6%
B61Sicilian, Richter-Rauzer, Larsen variation, 7.Qd258235.6%61.3%
B62Sicilian, Richter-Rauzer, 6...e65040.0%60.0%
B62Sicilian, Richter-Rauzer, Keres variation10230.4%48.5%
B62Sicilian, Richter-Rauzer, Margate (Alekhine) variation7635.5%52.0%
B62Sicilian, Richter-Rauzer, Podvebrady variation2050.0%35.0%
B62Sicilian, Richter-Rauzer, Richter attack10.0%100.0%
B63Sicilian, Richter-Rauzer, Rauzer attack15337.9%57.5%
B63Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7118138.0%56.1%
B64Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9.f433238.6%57.2%
B64Sicilian, Richter-Rauzer, Rauzer attack, Geller variation1136.4%63.6%
B65Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9...Nxd461240.8%55.6%
B66Sicilian, Richter-Rauzer, Rauzer attack, 7...a6580933.7%51.5%
B67Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 8...Bd7296733.7%55.5%
B68Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 9...Be714331.5%56.3%
B69Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 11.Bxf612528.8%60.0%
B70Sicilian, dragon variation82641.9%51.9%
B71Sicilian, dragon, Levenfish variation31234.9%52.7%
B71Sicilian, dragon, Levenfish; Flohr variation3641.7%56.9%
B72Sicilian, dragon, 6.Be319331.6%52.1%
B72Sicilian, dragon, classical attack11037.3%52.3%
B72Sicilian, dragon, classical, Amsterdam variation4825.0%47.9%
B72Sicilian, dragon, classical, Grigoriev variation4544.4%48.9%
B72Sicilian, dragon, classical, Nottingham variation4346.5%55.8%
B73Sicilian, dragon, classical, 8.O-O40145.1%52.5%
B73Sicilian, dragon, classical, Richter variation15147.7%58.3%
B73Sicilian, dragon, classical, Zollner gambit944.4%44.4%
B74Sicilian, dragon, classical, 9.Nb343951.0%48.5%
B74Sicilian, dragon, classical, Alekhine variation2850.0%64.3%
B74Sicilian, dragon, classical, Reti-Tartakower variation9445.7%54.8%
B74Sicilian, dragon, classical, Spielmann variation837.5%56.3%
B75Sicilian, dragon, Yugoslav attack42532.2%56.6%
B76Sicilian, dragon, Yugoslav attack, 7...O-O34134.9%53.5%
B76Sicilian, dragon, Yugoslav attack, Rauser variation98033.6%63.9%
B77Sicilian, dragon, Yugoslav attack, 9...Bd725038.8%56.2%
B77Sicilian, dragon, Yugoslav attack, 9.Bc411933.6%52.1%
B77Sicilian, dragon, Yugoslav attack, Byrne variation1442.9%64.3%
B78Sicilian, dragon, Yugoslav attack, 10.O-O-O46927.9%56.4%
B79Sicilian, dragon, Yugoslav attack, 12.h41428.6%64.3%
B80Sicilian, Scheveningen variation132631.6%54.3%
B80Sicilian, Scheveningen, English variation16832.7%54.5%
B80Sicilian, Scheveningen, Vitolins variation5543.6%50.9%
B80Sicilian, Scheveningen, fianchetto variation21031.9%51.7%
B81Sicilian, Scheveningen, Keres attack235134.6%59.8%
B82Sicilian, Scheveningen, 6.f457434.8%56.6%
B82Sicilian, Scheveningen, Tal variation12634.9%62.7%
B83Sicilian, Scheveningen, 6.Be257340.8%53.1%
B83Sicilian, modern Scheveningen47742.8%49.9%
B83Sicilian, modern Scheveningen, main line54044.4%53.1%
B83Sicilian, modern Scheveningen, main line with Nb39936.4%54.5%
B84Sicilian, Scheveningen (Paulsen), classical variation384739.0%52.1%
B84Sicilian, Scheveningen, classical, Nd7 system9833.7%49.5%
B85Sicilian, Scheveningen, classical14040.0%50.0%
B85Sicilian, Scheveningen, classical main line37546.4%55.7%
B85Sicilian, Scheveningen, classical variation with ...Qc7 and ...Nc6366.7%66.7%
B85Sicilian, Scheveningen, classical, Maroczy system2634.6%55.8%
B86Sicilian, Sozin attack24941.4%53.2%
B87Sicilian, Sozin with ...a6 and ...b581537.3%50.4%
B88Sicilian, Sozin, Fischer variation1650.0%50.0%
B88Sicilian, Sozin, Leonhardt variation63839.5%55.5%
B89Sicilian, Sozin, 7.Be3108237.8%50.9%
B89Sicilian, Velimirovic attack81234.4%51.8%
B90Sicilian, Najdorf319136.4%53.5%
B90Sicilian, Najdorf, Adams attack141938.3%52.8%
B90Sicilian, Najdorf, Byrne (English) attack2081235.6%53.2%
B90Sicilian, Najdorf, Lipnitzky attack116036.2%50.4%
B91Sicilian, Najdorf, Zagreb (fianchetto) variation89940.0%53.8%
B92Sicilian, Najdorf, Opovcensky variation546540.3%53.3%
B93Sicilian, Najdorf, 6.f4171439.6%50.7%
B94Sicilian, Najdorf, 6.Bg593335.4%53.1%
B95Sicilian, Najdorf, 6...e6121038.4%50.0%
B96Sicilian, Najdorf, 7.f4156236.2%52.0%
B96Sicilian, Najdorf, Polugayevsky variation10338.8%53.4%
B96Sicilian, Najdorf, Polugayevsky, Simagin variation3522.9%54.3%
B97Sicilian, Najdorf, 7...Qb6176033.9%46.7%
B97Sicilian, Najdorf, Poisoned pawn variation115545.3%49.7%
B98Sicilian, Najdorf variation33429.9%57.2%
B98Sicilian, Najdorf, 7...Be712632.5%54.4%
B98Sicilian, Najdorf, Browne variation4427.3%61.4%
B98Sicilian, Najdorf, Goteborg (Argentine) variation2250.0%47.7%
B99Sicilian, Najdorf, 7...Be7 main line64629.6%53.3%
C00French defence85330.8%56.2%
C00French defence, Steiner variation87241.7%51.8%
C00French, Alapin variation1225.0%70.8%
C00French, Chigorin variation106431.5%49.4%
C00French, King's Indian attack256536.7%51.3%
C00French, Labourdonnais variation27529.8%44.4%
C00French, Pelikan variation7439.2%52.0%
C00French, Reti (Spielmann) variation20737.7%51.2%
C00French, Reversed Philidor formation1330.8%61.5%
C00French, Schlechter variation20339.9%51.0%
C00French, Steinitz attack1926.3%39.5%
C00French, Two knights variation32036.3%52.8%
C00French, Wing gambit4641.3%59.8%
C00Lengfellner system1513.3%66.7%
C00St. George defence16847.0%59.8%
C01French, exchange variation175644.1%53.5%
C01French, exchange, Bogolyubov variation742.9%35.7%
C01French, exchange, Svenonius variation7936.7%52.5%
C02French, advance variation142931.3%56.5%
C02French, advance, Euwe variation149535.7%55.1%
C02French, advance, Milner-Barry gambit11335.4%47.8%
C02French, advance, Nimzovich system11929.4%47.5%
C02French, advance, Nimzovich variation1233.3%41.7%
C02French, advance, Paulsen attack189233.7%54.6%
C02French, advance, Steinitz variation48734.9%56.3%
C02French, advance, Wade variation38439.3%57.4%
C03French, Tarrasch268943.2%56.9%
C03French, Tarrasch, Guimard variation11229.5%62.1%
C04French, Tarrasch, Guimard main line47929.2%59.3%
C05French, Tarrasch, Botvinnik variation8436.9%64.9%
C05French, Tarrasch, closed variation133931.3%60.4%
C06French, Tarrasch, Leningrad variation1921.1%84.2%
C06French, Tarrasch, closed variation, main line105437.7%59.5%
C07French, Tarrasch, Eliskases variation14346.9%54.2%
C07French, Tarrasch, open variation399947.2%53.9%
C08French, Tarrasch, open, 4.ed ed144950.0%54.7%
C09French, Tarrasch, open variation, main line115149.4%56.9%
C10French, Fort Knox variation67039.9%57.2%
C10French, Frere (Becker) variation2737.0%63.0%
C10French, Marshall variation250.0%25.0%
C10French, Paulsen variation92031.3%60.2%
C10French, Rubinstein variation263448.2%55.7%
C10French, Rubinstein, Capablanca line862.5%56.3%
C11French defence20238.6%55.4%
C11French, Burn variation543744.4%52.9%
C11French, Henneberger variation1533.3%50.0%
C11French, Steinitz variation112337.8%54.7%
C11French, Steinitz, Boleslavsky variation378835.9%57.1%
C11French, Steinitz, Bradford attack1100.0%50.0%
C11French, Steinitz, Gledhill attack12333.3%54.9%
C11French, Swiss variation5446.3%52.8%
C12French, MacCutcheon variation15541.3%46.5%
C12French, MacCutcheon, Bernstein variation2924.1%56.9%
C12French, MacCutcheon, Bogolyubov variation1100.0%50.0%
C12French, MacCutcheon, Chigorin variation7040.0%47.1%
C12French, MacCutcheon, Dr. Olland (Dutch) variation12440.3%58.9%
C12French, MacCutcheon, Duras variation425.0%62.5%
C12French, MacCutcheon, Grigoriev variation2853.6%55.4%
C12French, MacCutcheon, Janowski variation14338.5%57.7%
C12French, MacCutcheon, Lasker variation22127.1%59.7%
C12French, MacCutcheon, Lasker variation, 8...g640735.9%59.5%
C12French, MacCutcheon, Tartakower variation20.0%100.0%
C12French, MacCutcheon, advance variation1526.7%20.0%
C13French, Albin-Alekhine-Chatard attack32531.1%55.5%
C13French, Albin-Alekhine-Chatard attack, Breyer variation9040.0%63.3%
C13French, Albin-Alekhine-Chatard attack, Maroczy variation2020.0%65.0%
C13French, Albin-Alekhine-Chatard attack, Spielmann variation6838.2%66.2%
C13French, Albin-Alekhine-Chatard attack, Teichmann variation366.7%66.7%
C13French, classical2944.8%43.1%
C13French, classical, Anderssen variation1827.8%41.7%
C13French, classical, Anderssen-Richter variation1625.0%50.0%
C13French, classical, Frankfurt variation837.5%81.3%
C13French, classical, Tartakower variation3531.4%55.7%
C13French, classical, Vistaneckis (Nimzovich) variation137.7%57.7%
C14French, classical variation119.1%40.9%
C14French, classical, Alapin variation10748.6%55.1%
C14French, classical, Pollock variation1233.3%50.0%
C14French, classical, Rubinstein variation4337.2%60.5%
C14French, classical, Stahlberg variation650.0%58.3%
C14French, classical, Steinitz variation82136.1%58.5%
C14French, classical, Tarrasch variation1414.3%50.0%
C15French, Winawer (Nimzovich) variation101039.6%55.5%
C15French, Winawer, Alekhine (Maroczy) gambit24636.6%56.5%
C15French, Winawer, Alekhine gambit728.6%42.9%
C15French, Winawer, Alekhine gambit, Kan variation5244.2%47.1%
C15French, Winawer, Kondratiyev variation633.3%66.7%
C15French, Winawer, fingerslip variation4835.4%40.6%
C16French, Winawer, Petrosian variation26231.7%55.2%
C16French, Winawer, advance variation99832.2%56.8%
C17French, Winawer, advance variation8042.5%60.0%
C17French, Winawer, advance, 5.a345133.5%63.5%
C17French, Winawer, advance, Bogolyubov variation39338.2%51.4%
C17French, Winawer, advance, Rauzer variation2035.0%62.5%
C17French, Winawer, advance, Russian variation6339.7%53.2%
C18French, Winawer, advance variation53626.3%63.2%
C18French, Winawer, classical variation38033.4%59.1%
C19French, Winawer, advance, 6...Ne743535.4%60.2%
C19French, Winawer, advance, Smyslov variation17529.7%61.1%
C19French, Winawer, advance, poisoned pawn variation275033.7%61.4%
C19French, Winawer, advance, poisoned pawn, Euwe-Gligoric variation30.0%33.3%
C19French, Winawer, advance, poisoned pawn, Konstantinopolsky variation82332.2%62.2%
C19French, Winawer, advance, positional main line110630.5%58.0%
C20Alapin's opening3933.3%62.8%
C20KP, Indian opening10232.4%46.6%
C20KP, King's head opening250.0%25.0%
C20KP, Lopez opening1643.8%34.4%
C20KP, Mengarini's opening2040.0%25.0%
C20KP, Napoleon's opening837.5%43.8%
C20KP, Patzer opening10025.0%40.5%
C20King's pawn game7229.2%53.5%
C21Centre game29138.8%56.5%
C21Danish gambit22735.2%49.3%
C21Danish gambit, Collijn defence560.0%50.0%
C21Danish gambit, Schlechter defence119.1%50.0%
C21Danish gambit, Soerensen defence16141.0%53.4%
C21Halasz gambit1225.0%45.8%
C22Centre game44136.7%46.0%
C22Centre game, Berger variation40037.5%53.5%
C22Centre game, Charousek variation650.0%58.3%
C22Centre game, Hall variation2343.5%39.1%
C22Centre game, Paulsen attack33136.3%53.2%
C22Centre game, l'Hermet variation20.0%50.0%
C23Bishop's opening26633.5%53.9%
C23Bishop's opening, Calabrese counter-gambit, Jaenisch variation30.0%100.0%
C23Bishop's opening, Classical variation9440.4%52.1%
C23Bishop's opening, Lewis gambit20.0%50.0%
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-attack18950.8%49.7%
C23Bishop's opening, Philidor variation944.4%55.6%
C23Bishop's opening, Wing gambit650.0%41.7%
C24Bishop's opening, Berlin defence151138.9%53.1%
C24Bishop's opening, Ponziani gambit1723.5%29.4%
C24Bishop's opening, Urusov gambit9836.7%36.7%
C25Vienna gambit14235.2%55.6%
C25Vienna game36736.0%57.8%
C25Vienna game, Max Lange defence3354.5%51.5%
C25Vienna, Paulsen variation15731.2%58.9%
C25Vienna, Pierce gambit2330.4%50.0%
C25Vienna, Steinitz gambit250.0%25.0%
C25Vienna, Steinitz gambit, Fraser-Minckwitz variation10.0%100.0%
C26Vienna game38043.4%53.3%
C26Vienna, Falkbeer variation10236.3%56.4%
C26Vienna, Mengarini variation1861.1%47.2%
C26Vienna, Paulsen-Mieses variation68639.8%52.6%
C27Boden-Kieseritsky gambit4233.3%33.3%
C27Boden-Kieseritsky gambit, Lichtenhein defence1330.8%53.8%
C27Vienna game17839.9%53.1%
C27Vienna, Alekhine variation2835.7%50.0%
C27Vienna, `Frankenstein-Dracula' variation156.7%76.7%
C28Vienna game53041.7%53.1%
C29Vienna gambit49234.6%49.4%
C29Vienna gambit, Bardeleben variation1526.7%53.3%
C29Vienna gambit, Breyer variation16031.3%52.5%
C29Vienna gambit, Kaufmann variation837.5%68.8%
C29Vienna gambit, Paulsen attack3444.1%57.4%
C29Vienna gambit, Steinitz variation1838.9%41.7%
C29Vienna gambit, Wurzburger trap20.0%100.0%
C30KGD, 2...Nf65831.0%63.8%
C30KGD, Keene's defence7230.6%62.5%
C30KGD, Mafia defence837.5%68.8%
C30KGD, Norwalde variation2015.0%77.5%
C30KGD, classical counter-gambit540.0%40.0%
C30KGD, classical variation20130.8%52.2%
C30KGD, classical, 4.c316232.1%57.4%
C30KGD, classical, Hanham variation250.0%75.0%
C30KGD, classical, Heath variation825.0%50.0%
C30KGD, classical, Marshall attack5100.0%50.0%
C30KGD, classical, Reti variation1100.0%50.0%
C30KGD, classical, Soldatenkov variation728.6%28.6%
C30KGD, classical, Svenonius variation1100.0%50.0%
C30King's gambit25936.3%57.1%
C31KGD, Falkbeer counter-gambit23031.3%51.7%
C31KGD, Falkbeer, 3...e42839.3%51.8%
C31KGD, Falkbeer, 4.d34447.7%64.8%
C31KGD, Falkbeer, Milner-Barry variation20.0%50.0%
C31KGD, Falkbeer, Morphy gambit1520.0%36.7%
C31KGD, Falkbeer, Nimzovich variation1540.0%53.3%
C31KGD, Falkbeer, Rubinstein variation1910.5%63.2%
C31KGD, Falkbeer, Tartakower variation4854.2%50.0%
C31KGD, Nimzovich counter-gambit22637.2%53.5%
C32KGD, Falkbeer, 5.de4932.7%51.0%
C32KGD, Falkbeer, Charousek gambit4100.0%50.0%
C32KGD, Falkbeer, Keres variation2532.0%48.0%
C32KGD, Falkbeer, Reti variation1136.4%54.5%
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) gambit4146.3%42.7%
C33KGA, Lesser bishop's (Petroff-Jaenisch-Tartakower) gambit714.3%64.3%
C33KGA, Villemson (Steinitz) gambit1030.0%45.0%
C33KGA, bishop's gambit21631.0%54.4%
C33KGA, bishop's gambit, Anderssen variation633.3%50.0%
C33KGA, bishop's gambit, Bledow variation14825.7%39.9%
C33KGA, bishop's gambit, Boden defence850.0%50.0%
C33KGA, bishop's gambit, Bogolyubov variation6036.7%48.3%
C33KGA, bishop's gambit, Cozio (Morphy) defence3125.8%35.5%
C33KGA, bishop's gambit, Gifford variation333.3%50.0%
C33KGA, bishop's gambit, Jaenisch variation12840.6%48.4%
C33KGA, bishop's gambit, Lopez-Gianutio counter-gambit633.3%66.7%
C33KGA, bishop's gambit, Maurian defence3417.6%44.1%
C33KGA, bishop's gambit, McDonnell attack10.0%100.0%
C33KGA, bishop's gambit, Morphy variation4926.5%56.1%
C33KGA, bishop's gambit, Paulsen attack1450.0%53.6%
C33KGA, bishop's gambit, Ruy Lopez defence2642.3%55.8%
C33KGA, bishop's gambit, Steinitz defence8528.2%50.6%
C33KGA, bishop's gambit, classical defence60.0%50.0%
C33King's gambit accepted333.3%16.7%
C34KGA, Becker defence8130.9%50.0%
C34KGA, Bonsch-Osmolovsky variation15427.9%54.2%
C34KGA, Fischer defence25130.3%47.0%
C34KGA, Gianutio counter-gambit2100.0%50.0%
C34KGA, Schallop defence17028.2%52.9%
C34King's knight's gambit3627.8%50.0%
C35KGA, Cunningham defence22127.1%50.7%
C35KGA, Cunningham, Euwe defence9323.7%49.5%
C36KGA, Abbazia defence (classical defence, modern defence[!])9842.9%61.2%
C36KGA, Abbazia defence, modern variation60339.1%47.1%
C37KGA, Blachly gambit3234.4%32.8%
C37KGA, Cochrane gambit425.0%37.5%
C37KGA, King's knight's gambit2556.0%56.0%
C37KGA, Muzio gambit944.4%33.3%
C37KGA, Muzio gambit, Brentano defence425.0%62.5%
C37KGA, Muzio gambit, From defence1100.0%50.0%
C37KGA, Quaade gambit3135.5%40.3%
C37KGA, Rosentreter gambit2030.0%35.0%
C37KGA, Salvio gambit728.6%42.9%
C37KGA, Salvio gambit, Anderssen counter-attack50.0%60.0%
C37KGA, Silberschmidt gambit333.3%50.0%
C38KGA, Hanstein gambit1225.0%62.5%
C38KGA, Philidor gambit2218.2%36.4%
C38King's knight's gambit2536.0%26.0%
C39KGA, Allgaier, Thorold variation10.0%0.0%
C39KGA, Allgaier, Walker attack10.0%0.0%
C39KGA, Kieseritsky, Berlin defence6936.2%45.7%
C39KGA, Kieseritsky, Berlin defence, 6.Bc45633.9%42.0%
C39KGA, Kieseritsky, Brentano (Campbell) defence10.0%100.0%
C39KGA, Kieseritsky, Brentano defence20.0%50.0%
C39KGA, Kieseritsky, Brentano defence, Caro variation3100.0%50.0%
C39KGA, Kieseritsky, Kolisch defence11644.8%47.4%
C39KGA, Kieseritsky, Neumann defence2540.0%60.0%
C39KGA, Kieseritsky, Paulsen defence825.0%37.5%
C39KGA, Kieseritsky, Rice gambit1921.1%26.3%
C39KGA, Kieseritsky, Salvio (Rosenthal) defence6746.3%39.6%
C39KGA, Kieseritsky, long whip (Stockwhip, classical) defence825.0%37.5%
C39King's knight's gambit1020.0%50.0%
C40Greco defence1225.0%45.8%
C40Gunderam defence10329.1%66.0%
C40King's knight opening20.0%50.0%
C40Latvian counter-gambit24732.4%54.7%
C40Latvian gambit, 3.Bc41560.0%56.7%
C40Latvian, Fraser defence3732.4%56.8%
C40Latvian, Polerio variation2227.3%40.9%
C40QP counter-gambit (elephant gambit)2650.0%67.3%
C40QP counter-gambit, Maroczy gambit540.0%80.0%
C41Philidor's defence42035.5%59.2%
C41Philidor, Boden variation757.1%42.9%
C41Philidor, Hanham variation4831.3%61.5%
C41Philidor, Hanham, Delmar variation1030.0%45.0%
C41Philidor, Hanham, Krause variation1850.0%47.2%
C41Philidor, Hanham, Schlechter variation3148.4%66.1%
C41Philidor, Hanham, Steiner variation2339.1%67.4%
C41Philidor, Improved Hanham variation118737.4%57.5%
C41Philidor, Larsen variation6023.3%66.7%
C41Philidor, Lopez counter-gambit30.0%66.7%
C41Philidor, Nimzovich (Jaenisch) variation2339.1%45.7%
C41Philidor, Nimzovich variation5841.4%58.6%
C41Philidor, Nimzovich, Klein variation1163.6%59.1%
C41Philidor, Nimzovich, Larobok variation6546.2%36.9%
C41Philidor, Nimzovich, Locock variation450.0%50.0%
C41Philidor, Nimzovich, Rellstab variation4037.5%68.8%
C41Philidor, Nimzovich, Sokolsky variation862.5%68.8%
C41Philidor, Nimzovich, Sozin variation742.9%50.0%
C41Philidor, Paulsen attack250.0%25.0%
C41Philidor, Philidor counter-gambit1618.8%71.9%
C41Philidor, Philidor counter-gambit, Zukertort variation1050.0%65.0%
C41Philidor, Philidor counter-gambit, del Rio attack30.0%66.7%
C41Philidor, Steinitz variation20.0%0.0%
C41Philidor, exchange variation92737.0%58.7%
C42Petrov three knights game33338.1%57.5%
C42Petrov's defence34841.4%53.2%
C42Petrov, Cochrane gambit7518.7%36.0%
C42Petrov, Cozio (Lasker) attack52949.5%52.7%
C42Petrov, Damiano variation2646.2%50.0%
C42Petrov, French attack966.7%66.7%
C42Petrov, Italian variation6527.7%49.2%
C42Petrov, Kaufmann attack25846.5%51.2%
C42Petrov, Nimzovich attack134044.3%55.4%
C42Petrov, Paulsen attack19142.4%51.0%
C42Petrov, classical attack91647.5%56.9%
C42Petrov, classical attack, Berger variation1471.4%57.1%
C42Petrov, classical attack, Chigorin variation61741.2%56.9%
C42Petrov, classical attack, Jaenisch variation174046.0%58.3%
C42Petrov, classical attack, Krause variation944.4%33.3%
C42Petrov, classical attack, Marshall variation108244.0%57.4%
C42Petrov, classical attack, Mason variation13344.4%56.8%
C42Petrov, classical attack, Tarrasch variation250.0%75.0%
C42Petrov, classical attack, close variation17841.6%59.6%
C43Petrov, Urusov gambit1020.0%70.0%
C43Petrov, modern (Steinitz) attack4942.9%56.1%
C43Petrov, modern attack, Bardeleben variation616.7%58.3%
C43Petrov, modern attack, Steinitz variation1100.0%50.0%
C43Petrov, modern attack, Symmetrical variation277844.5%53.3%
C43Petrov, modern attack, Trifunovic variation5846.6%47.4%
C43Petrov, modern attack, main line20746.9%57.7%
C44Dresden opening825.0%25.0%
C44Inverted Hanham3528.6%45.7%
C44Inverted Hungarian2846.4%55.4%
C44King's pawn game10834.3%48.6%
C44Konstantinopolsky opening2441.7%66.7%
C44Ponziani counter-gambit12241.0%59.8%
C44Ponziani counter-gambit, Cordel variation10.0%0.0%
C44Ponziani opening34831.6%45.7%
C44Ponziani, Caro variation24844.4%49.2%
C44Ponziani, Fraser defence6040.0%65.0%
C44Ponziani, Jaenisch counter-attack226944.7%52.4%
C44Ponziani, Leonhardt variation11633.6%47.8%
C44Ponziani, Reti variation3633.3%58.3%
C44Ponziani, Romanishin variation1631.3%46.9%
C44Ponziani, Steinitz variation49141.5%45.6%
C44Scotch gambit10641.5%57.5%
C44Scotch gambit, Anderssen (Paulsen, Suhle) counter-attack666.7%33.3%
C44Scotch gambit, Benima defence5639.3%55.4%
C44Scotch gambit, Dubois-Reti defence35341.1%53.4%
C44Scotch gambit, Hanneken variation10.0%100.0%
C44Scotch opening862.5%31.3%
C44Scotch, Goering gambit21942.9%55.3%
C44Scotch, Goering gambit, Bardeleben variation1540.0%46.7%
C44Scotch, Lolli variation2030.0%55.0%
C44Scotch, Relfsson gambit ('MacLopez')850.0%62.5%
C44Tayler opening20.0%50.0%
C45Scotch game270842.3%54.2%
C45Scotch, Blackburne attack2147.6%47.6%
C45Scotch, Blumenfeld attack1637.5%31.3%
C45Scotch, Ghulam Kassim variation683.3%58.3%
C45Scotch, Horwitz attack2733.3%64.8%
C45Scotch, Meitner variation3554.3%55.7%
C45Scotch, Mieses variation152741.4%54.0%
C45Scotch, Paulsen attack540.0%80.0%
C45Scotch, Potter variation60438.4%52.0%
C45Scotch, Pulling counter-attack520.0%70.0%
C45Scotch, Romanishin variation6942.0%60.1%
C45Scotch, Schmidt variation74950.5%47.5%
C45Scotch, Steinitz variation4434.1%55.7%
C45Scotch, Tartakower variation1833.3%38.9%
C46Four knights game81141.1%50.2%
C46Four knights, Gunsberg variation11745.3%51.7%
C46Four knights, Italian variation21342.7%47.7%
C46Four knights, Schultze-Mueller gambit30.0%33.3%
C46Three knights game29533.9%58.0%
C46Three knights, Schlechter variation3633.3%52.8%
C46Three knights, Steinitz variation19029.5%51.6%
C46Three knights, Steinitz, Rosenthal variation1936.8%44.7%
C46Three knights, Winawer defence (Gothic defence)10.0%100.0%
C47Four knights, Belgrade gambit12245.1%53.7%
C47Four knights, Scotch variation2425.0%54.2%
C47Four knights, Scotch, 4...exd450450.6%53.9%
C47Four knights, Scotch, Krause variation4637.0%64.1%
C48Four knights, Bardeleben variation850.0%50.0%
C48Four knights, Marshall variation825.0%50.0%
C48Four knights, Ranken variation2941.4%65.5%
C48Four knights, Rubinstein counter-gambit123740.2%52.0%
C48Four knights, Rubinstein counter-gambit, 5.Be2850.0%50.0%
C48Four knights, Rubinstein counter-gambit, Bogolyubov variation1752.9%44.1%
C48Four knights, Rubinstein counter-gambit, Henneberger variation6744.8%52.2%
C48Four knights, Rubinstein counter-gambit, exchange variation16565.5%52.1%
C48Four knights, Spanish variation30249.7%55.3%
C48Four knights, Spanish, classical defence22144.3%50.7%
C48Four knights, Spielmann variation862.5%43.8%
C49Four knights8051.3%48.1%
C49Four knights, Gunsberg counter-attack366.7%33.3%
C49Four knights, Janowski variation1936.8%65.8%
C49Four knights, Nimzovich (Paulsen) variation7156.3%60.6%
C49Four knights, Svenonius variation560.0%50.0%
C49Four knights, double Ruy Lopez19839.4%57.6%
C49Four knights, symmetrical variation21041.4%56.0%
C49Four knights, symmetrical, Blake variation475.0%62.5%
C49Four knights, symmetrical, Capablanca variation2454.2%60.4%
C49Four knights, symmetrical, Maroczy system7143.7%52.8%
C49Four knights, symmetrical, Metger unpin33936.6%50.7%
C49Four knights, symmetrical, Pillsbury variation6050.0%45.0%
C49Four knights, symmetrical, Tarrasch variation1650.0%50.0%
C50Giuoco Pianissimo223237.9%53.4%
C50Giuoco Pianissimo, Canal variation20042.5%53.3%
C50Giuoco Pianissimo, Italian four knights variation46237.2%51.7%
C50Giuoco Piano132439.7%52.9%
C50Giuoco Piano, four knights variation6535.4%54.6%
C50Hungarian defence20538.0%49.8%
C50King's pawn game25235.3%60.5%
C50Rousseau gambit333.3%50.0%
C51Evans counter-gambit3023.3%55.0%
C51Evans gambit933.3%72.2%
C51Evans gambit declined4332.6%55.8%
C51Evans gambit declined, 5.a419441.2%46.9%
C51Evans gambit declined, Lange variation20.0%0.0%
C51Evans gambit declined, Showalter variation4847.9%55.2%
C51Evans gambit, 5...Be76734.3%60.4%
C51Evans gambit, Cordel variation10047.0%45.5%
C51Evans gambit, Fraser attack30.0%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 variation23433.8%51.9%
C51Evans gambit, normal variation2520.0%46.0%
C52Evans gambit35338.0%48.2%
C52Evans gambit, Alapin-Steinitz variation250.0%25.0%
C52Evans gambit, Lasker defence1127.3%22.7%
C52Evans gambit, Leonhardt variation633.3%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 attack7447.3%43.9%
C52Evans gambit, Waller attack714.3%92.9%
C52Evans gambit, compromised defence4520.0%74.4%
C52Evans gambit, compromised defence, Paulsen variation1723.5%58.8%
C52Evans gambit, compromised defence, Potter variation10.0%100.0%
C53Giuoco Piano260638.1%52.5%
C53Giuoco Piano, Anderssen variation2661.5%42.3%
C53Giuoco Piano, Bird's attack17532.0%49.7%
C53Giuoco Piano, Eisinger variation20.0%100.0%
C53Giuoco Piano, LaBourdonnais variation3641.7%54.2%
C53Giuoco Piano, Mestel variation616.7%58.3%
C53Giuoco Piano, centre-holding variation7338.4%63.0%
C53Giuoco Piano, close variation10729.9%57.9%
C54Giuoco Piano21052.9%51.7%
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 defence10337.9%50.0%
C55Two knights defence (Modern bishop's opening)159138.8%55.8%
C55Two knights defence, Keidanz variation2100.0%50.0%
C55Two knights defence, Perreux variation3151.6%54.8%
C55Two knights, Max Lange attack3033.3%56.7%
C55Two knights, Max Lange attack, Krause variation450.0%75.0%
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 variation2450.0%54.2%
C55Two knights, Max Lange attack, Steinitz variation1442.9%64.3%
C56Two knights defence14245.1%49.3%
C56Two knights defence, Canal variation540.0%40.0%
C57Two knights defence1827.8%36.1%
C57Two knights defence, Fegatello attack7425.7%50.7%
C57Two knights defence, Fegatello attack, Leonhardt variation825.0%50.0%
C57Two knights defence, Fegatello attack, Polerio defence40.0%100.0%
C57Two knights defence, Fritz variation7342.5%47.3%
C57Two knights defence, Fritz, Gruber variation1233.3%50.0%
C57Two knights defence, Lolli attack1936.8%55.3%
C57Two knights defence, Pincus variation825.0%25.0%
C57Two knights defence, Ulvestad variation8051.3%48.1%
C57Two knights defence, Wilkes Barre (Traxler) variation10433.7%56.3%
C58Two knights defence26834.7%58.0%
C58Two knights defence, Blackburne variation30.0%66.7%
C58Two knights defence, Bogolyubov variation7429.7%43.2%
C58Two knights defence, Colman variation7833.3%47.4%
C58Two knights defence, Kieseritsky variation3627.8%58.3%
C58Two knights defence, Paoli variation933.3%72.2%
C58Two knights defence, Yankovich variation1435.7%25.0%
C59Two knights defence19838.4%49.0%
C59Two knights defence, Goering variation812.5%31.3%
C59Two knights defence, Steinitz variation37730.2%48.5%
C60Ruy Lopez (Spanish opening)6328.6%58.7%
C60Ruy Lopez, Cozio defence44538.7%52.6%
C60Ruy Lopez, Cozio defence, Paulsen variation5131.4%68.6%
C60Ruy Lopez, Lucena defence850.0%50.0%
C60Ruy Lopez, Nuernberg variation40.0%50.0%
C60Ruy Lopez, Vinogradov variation250.0%75.0%
C60Ruy Lopez, fianchetto (Smyslov/Barnes) defence48840.2%53.3%
C61Ruy Lopez, Bird's defence48634.8%55.9%
C61Ruy Lopez, Bird's defence, Paulsen variation850.0%62.5%
C62Ruy Lopez, old Steinitz defence42236.3%55.3%
C62Ruy Lopez, old Steinitz defence, Nimzovich attack520.0%50.0%
C62Ruy Lopez, old Steinitz defence, semi-Duras variation1844.4%55.6%
C63Ruy Lopez, Schliemann defence43543.4%57.6%
C63Ruy Lopez, Schliemann defence, Berger variation44643.5%56.1%
C64Ruy Lopez, Cordel gambit9141.8%58.2%
C64Ruy Lopez, classical (Cordel) defence29639.9%52.7%
C64Ruy Lopez, classical defence, 4.c332340.9%56.3%
C64Ruy Lopez, classical defence, Benelux variation 42339.5%55.7%
C64Ruy Lopez, classical defence, Charousek variation1030.0%65.0%
C64Ruy Lopez, classical defence, Zaitsev variation2100.0%50.0%
C65Ruy Lopez, Berlin defence404438.7%51.8%
C65Ruy Lopez, Berlin defence, 4.O-O22141.6%58.8%
C65Ruy Lopez, Berlin defence, Anderssen variation250.0%75.0%
C65Ruy Lopez, Berlin defence, Beverwijk variation57438.5%57.2%
C65Ruy Lopez, Berlin defence, Duras variation2937.9%46.6%
C65Ruy Lopez, Berlin defence, Kaufmann variation3447.1%55.9%
C65Ruy Lopez, Berlin defence, Mortimer variation2152.4%40.5%
C65Ruy Lopez, Berlin defence, Nyholm attack10855.6%51.9%
C66Ruy Lopez, Berlin defence, 4.O-O, d612644.4%57.9%
C66Ruy Lopez, Berlin defence, hedgehog variation11650.0%58.6%
C66Ruy Lopez, closed Berlin defence, Bernstein variation2045.0%57.5%
C66Ruy Lopez, closed Berlin defence, Chigorin variation40.0%50.0%
C66Ruy Lopez, closed Berlin defence, Showalter variation5846.6%57.8%
C66Ruy Lopez, closed Berlin defence, Wolf variation6157.4%56.6%
C67Ruy Lopez, Berlin defence, Cordel variation7233.3%61.1%
C67Ruy Lopez, Berlin defence, Minckwitz variation4647.8%60.9%
C67Ruy Lopez, Berlin defence, Pillsbury variation10.0%0.0%
C67Ruy Lopez, Berlin defence, Rosenthal variation4139.0%63.4%
C67Ruy Lopez, Berlin defence, Trifunovic variation520.0%90.0%
C67Ruy Lopez, Berlin defence, Winawer attack2934.5%69.0%
C67Ruy Lopez, Berlin defence, Zukertort variation1656.3%59.4%
C67Ruy Lopez, Berlin defence, open variation422646.9%53.7%
C67Ruy Lopez, open Berlin defence, 5...Be78938.2%52.8%
C67Ruy Lopez, open Berlin defence, Showalter variation2222.7%47.7%
C67Ruy Lopez, open Berlin defence, l'Hermet variation11156.8%50.0%
C68Ruy Lopez, exchange variation9936.4%53.5%
C68Ruy Lopez, exchange, Alekhine variation1838.9%41.7%
C68Ruy Lopez, exchange, Keres variation13747.4%52.2%
C68Ruy Lopez, exchange, Romanovsky variation3636.1%56.9%
C69Ruy Lopez, exchange variation, 5.O-O93541.6%53.9%
C69Ruy Lopez, exchange variation, Alapin gambit32942.6%51.7%
C69Ruy Lopez, exchange, Bronstein variation71536.5%50.3%
C69Ruy Lopez, exchange, Gligoric variation81343.7%54.6%
C70Ruy Lopez14438.9%53.5%
C70Ruy Lopez, Alapin's defence deferred1533.3%76.7%
C70Ruy Lopez, Caro variation9743.3%58.8%
C70Ruy Lopez, Classical defence deferred11740.2%57.7%
C70Ruy Lopez, Cozio defence deferred45140.8%53.4%
C70Ruy Lopez, Graz variation966.7%55.6%
C70Ruy Lopez, Schliemann defence deferred3132.3%64.5%
C70Ruy Lopez, Taimanov (chase/wing/accelerated counterthrust) variation15337.3%63.7%
C70Ruy Lopez, fianchetto defence deferred9448.9%55.3%
C71Ruy Lopez, modern Steinitz defence16443.3%55.2%
C71Ruy Lopez, modern Steinitz defence, Duras (Keres) variation21140.3%57.6%
C71Ruy Lopez, modern Steinitz defence, Three knights variation1741.2%50.0%
C72Ruy Lopez, modern Steinitz defence, 5.O-O72740.2%57.1%
C73Ruy Lopez, modern Steinitz defence, Alapin variation23031.3%50.9%
C73Ruy Lopez, modern Steinitz defence, Richter variation22249.1%50.7%
C74Ruy Lopez, Siesta, Kopayev variation18433.2%55.2%
C74Ruy Lopez, modern Steinitz defence14730.6%60.9%
C74Ruy Lopez, modern Steinitz defence, siesta variation9230.4%51.1%
C75Ruy Lopez, modern Steinitz defence20442.2%53.4%
C75Ruy Lopez, modern Steinitz defence, Rubinstein variation14130.5%58.5%
C76Ruy Lopez, modern Steinitz defence, fianchetto (Bronstein) variation45734.6%52.7%
C77Ruy Lopez, Anderssen variation136142.9%51.7%
C77Ruy Lopez, Morphy defence24537.6%56.3%
C77Ruy Lopez, Morphy defence, Duras variation7140.8%57.0%
C77Ruy Lopez, Treybal (Bayreuth) variation (exchange var. deferred)9246.7%45.1%
C77Ruy Lopez, Wormald (Alapin) attack48542.5%53.4%
C77Ruy Lopez, Wormald attack, Gruenfeld variation450.0%75.0%
C77Ruy Lopez, four knights (Tarrasch) variation20643.7%54.4%
C78Ruy Lopez, ...b5 & ...d65836.2%56.0%
C78Ruy Lopez, 5.O-O125845.7%54.3%
C78Ruy Lopez, Archangelsk (counterthrust) variation172842.5%54.5%
C78Ruy Lopez, Moeller defence65342.4%54.0%
C78Ruy Lopez, Wing attack1546.7%56.7%
C79Ruy Lopez, Steinitz defence deferred (Russian defence)39038.2%55.0%
C79Ruy Lopez, Steinitz defence deferred, Lipnitsky variation1172.7%54.5%
C79Ruy Lopez, Steinitz defence deferred, Rubinstein variation2548.0%56.0%
C80Ruy Lopez, open (Tarrasch) defence6540.0%63.1%
C80Ruy Lopez, open, 6.d45040.0%44.0%
C80Ruy Lopez, open, 7.Bb348940.7%52.9%
C80Ruy Lopez, open, 8...Be6127938.5%43.5%
C80Ruy Lopez, open, Berger variation366.7%33.3%
C80Ruy Lopez, open, Bernstein variation94248.7%62.9%
C80Ruy Lopez, open, Bernstein variation, Karpov gambit2744.4%44.4%
C80Ruy Lopez, open, Friess attack1118.2%54.5%
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 variation1361.5%46.2%
C80Ruy Lopez, open, Zukertort variation333.3%50.0%
C81Ruy Lopez, open, Howell attack24047.9%54.8%
C81Ruy Lopez, open, Howell attack, Adam variation20.0%0.0%
C81Ruy Lopez, open, Howell attack, Ekstroem variation1233.3%50.0%
C82Ruy Lopez, open, 9.c3728.6%71.4%
C82Ruy Lopez, open, Berlin variation2828.6%67.9%
C82Ruy Lopez, open, Dilworth variation16041.9%60.9%
C82Ruy Lopez, open, Italian variation9751.5%64.9%
C82Ruy Lopez, open, Motzko attack7245.8%57.6%
C82Ruy Lopez, open, Motzko attack, Nenarokov variation1643.8%71.9%
C82Ruy Lopez, open, St. Petersburg variation20042.0%65.5%
C83Ruy Lopez, open, 9...Be7, 10.Re14436.4%54.5%
C83Ruy Lopez, open, Breslau variation250.0%75.0%
C83Ruy Lopez, open, Malkin variation1662.5%56.3%
C83Ruy Lopez, open, classical defence21446.7%59.3%
C84Ruy Lopez, closed defence156541.0%52.5%
C84Ruy Lopez, closed, Basque gambit (North Spanish variation)250.0%25.0%
C84Ruy Lopez, closed, centre attack17748.0%46.6%
C85Ruy Lopez, Exchange variation doubly deferred (DERLD)142040.0%49.4%
C86Ruy Lopez, Worrall attack2853.6%58.9%
C86Ruy Lopez, Worrall attack, sharp line26739.7%52.4%
C86Ruy Lopez, Worrall attack, solid line13138.9%50.0%
C87Ruy Lopez, closed, Averbach variation35841.9%58.7%
C88Ruy Lopez, Trajkovic counter-attack66641.9%52.3%
C88Ruy Lopez, closed129041.4%53.1%
C88Ruy Lopez, closed, 7...O-O307640.6%52.4%
C88Ruy Lopez, closed, 7...d6, 8.d42334.8%21.7%
C88Ruy Lopez, closed, 8.c32839.3%62.5%
C88Ruy Lopez, closed, Balla variation4637.0%55.4%
C88Ruy Lopez, closed, anti-Marshall 8.a4169440.0%54.0%
C89Ruy Lopez, Marshall counter-attack55452.7%54.0%
C89Ruy Lopez, Marshall counter-attack, 11...c620445.6%55.6%
C89Ruy Lopez, Marshall, Herman Steiner variation333.3%83.3%
C89Ruy Lopez, Marshall, Kevitz variation2100.0%50.0%
C89Ruy Lopez, Marshall, main line, 12.d2d422241.4%63.1%
C89Ruy Lopez, Marshall, main line, 14...Qh345050.9%51.0%
C89Ruy Lopez, Marshall, main line, Spassky variation10.0%0.0%
C90Ruy Lopez, closed (with ...d6)120037.1%51.5%
C90Ruy Lopez, closed, Lutikov variation3951.3%56.4%
C90Ruy Lopez, closed, Pilnik variation85435.8%51.8%
C90Ruy Lopez, closed, Suetin variation8537.6%57.6%
C91Ruy Lopez, closed, 9.d4123339.3%57.9%
C91Ruy Lopez, closed, Bogolyubov variation385943.5%53.8%
C92Ruy Lopez, closed, 9.h340943.0%51.8%
C92Ruy Lopez, closed, Flohr-Zaitsev system (Lenzerheide variation)197338.8%56.6%
C92Ruy Lopez, closed, Keres (9...a5) variation2055.0%47.5%
C92Ruy Lopez, closed, Kholmov variation13231.8%65.2%
C92Ruy Lopez, closed, Ragozin-Petrosian (`Keres') variation33242.5%63.7%
C93Ruy Lopez, closed, Smyslov defence24841.1%58.1%
C94Ruy Lopez, closed, Breyer defence10239.2%56.9%
C95Ruy Lopez, closed, Breyer, 10.d410.0%0.0%
C95Ruy Lopez, closed, Breyer, Borisenko variation78439.5%56.4%
C95Ruy Lopez, closed, Breyer, Gligoric variation5942.4%58.5%
C95Ruy Lopez, closed, Breyer, Simagin variation2540.0%56.0%
C96Ruy Lopez, closed (10...c5)67033.0%64.7%
C96Ruy Lopez, closed (8...Na5)3053.3%66.7%
C96Ruy Lopez, closed, Borisenko defence4040.0%57.5%
C96Ruy Lopez, closed, Keres (...Nd7) defence22836.8%65.4%
C96Ruy Lopez, closed, Rossolimo defence30.0%33.3%
C97Ruy Lopez, closed, Chigorin defence80831.1%62.9%
C98Ruy Lopez, closed, Chigorin, 12...Nc614631.5%62.3%
C99Ruy Lopez, closed, Chigorin, 12...c5d490940.3%62.8%
D00Blackmar gambit23138.5%40.0%
D00Blackmar-Diemer gambit3218.8%43.8%
D00Blackmar-Diemer, Euwe defence3625.0%48.6%
D00Blackmar-Diemer, Lemberg counter-gambit1414.3%57.1%
D00Levitsky attack (Queen's bishop attack)242435.4%51.4%
D00Queen's pawn game101636.6%51.0%
D00Queen's pawn, Anti-Veresov450.0%50.0%
D00Queen's pawn, Chigorin variation55332.7%50.9%
D00Queen's pawn, Mason variation135737.0%53.1%
D00Queen's pawn, Mason variation, Steinitz counter-gambit62337.2%51.4%
D00Queen's pawn, stonewall attack6535.4%42.3%
D01Richter-Veresov attack67332.8%48.1%
D01Richter-Veresov attack, Richter variation2119.0%52.4%
D01Richter-Veresov attack, Veresov variation2842.9%50.0%
D02Queen's bishop game169138.3%53.2%
D02Queen's pawn game610840.3%52.7%
D02Queen's pawn game, Chigorin variation58539.0%55.4%
D02Queen's pawn game, Krause variation56041.4%54.1%
D03Torre attack (Tartakower variation)79538.2%50.8%
D04Queen's pawn game110237.7%51.2%
D05Colle system21946.6%53.0%
D05Queen's pawn game76536.3%52.7%
D05Queen's pawn game, Rubinstein (Colle-Zukertort) variation33337.5%53.9%
D05Queen's pawn game, Zukertort variation4346.5%58.1%
D06QGD, Grau (Sahovic) defence23933.5%57.7%
D06QGD, Marshall defence28440.1%54.2%
D06QGD, symmetrical (Austrian) defence11941.2%59.2%
D07QGD, Chigorin defence98635.1%56.3%
D07QGD, Chigorin defence, Janowski variation11033.6%63.2%
D08QGD, Albin counter-gambit46737.5%55.1%
D08QGD, Albin counter-gambit, Alapin variation9043.3%58.3%
D08QGD, Albin counter-gambit, Balogh variation1520.0%76.7%
D08QGD, Albin counter-gambit, Janowski variation1926.3%76.3%
D08QGD, Albin counter-gambit, Krenosz variation1225.0%54.2%
D08QGD, Albin counter-gambit, Lasker trap50.0%60.0%
D09QGD, Albin counter-gambit, 5.g335139.6%56.8%
D10QGD Slav defence455040.4%54.2%
D10QGD Slav defence, Alekhine variation29538.6%56.3%
D10QGD Slav defence, exchange variation176443.8%55.6%
D10QGD Slav, Winawer counter-gambit21233.0%53.3%
D11QGD Slav, 3.Nf3325340.3%54.8%
D11QGD Slav, 4.e3503041.7%55.2%
D11QGD Slav, Breyer variation20941.6%59.6%
D12QGD Slav, 4.e3 Bf5350339.8%54.4%
D12QGD Slav, Amsterdam variation2152.4%45.2%
D12QGD Slav, exchange variation10235.3%49.0%
D13QGD Slav, exchange variation79546.8%55.3%
D14QGD Slav, exchange variation, 6.Bf4 Bf570650.4%51.4%
D14QGD Slav, exchange, Trifunovic variation23250.0%52.6%
D15QGD Slav accepted13138.9%50.8%
D15QGD Slav, 4.Nc3471439.7%54.9%
D15QGD Slav, 5.e3 (Alekhine variation)18131.5%56.1%
D15QGD Slav, Schlechter variation35741.2%59.2%
D15QGD Slav, Slav gambit3531.4%58.6%
D15QGD Slav, Suechting variation18631.2%59.7%
D15QGD Slav, Tolush-Geller gambit13826.8%42.4%
D16QGD Slav accepted, Alapin variation21436.9%65.7%
D16QGD Slav, Smyslov variation8936.0%60.7%
D16QGD Slav, Soultanbeieff variation48049.8%52.8%
D16QGD Slav, Steiner variation25835.7%63.2%
D17QGD Slav, Carlsbad variation48937.0%60.8%
D17QGD Slav, Czech defence45547.7%55.5%
D17QGD Slav, Krause attack78739.6%58.4%
D17QGD Slav, Wiesbaden variation66842.7%57.1%
D18QGD Slav, Dutch variation34341.7%59.6%
D18QGD Slav, Dutch, Lasker variation425.0%87.5%
D19QGD Slav, Dutch variation149139.5%57.0%
D19QGD Slav, Dutch variation, main line24841.9%57.3%
D19QGD Slav, Dutch, Saemisch variation250.0%25.0%
D20QGA, 3.e4325139.4%56.4%
D20QGA, Linares variation9435.1%59.0%
D20Queen's gambit accepted113244.8%54.8%
D21QGA, 3.Nf338939.8%58.7%
D21QGA, Alekhine defense, Borisenko-Furman variation3225.0%43.8%
D21QGA, Ericson variation60.0%33.3%
D22QGA, Alekhine defence39740.1%57.1%
D22QGA, Alekhine defence, Alatortsev variation1250.0%41.7%
D22QGA, Haberditz variation18454.3%53.3%
D23QGA, Mannheim variation43541.1%53.7%
D23Queen's gambit accepted4938.8%54.1%
D24QGA, 4.Nc330038.7%50.3%
D24QGA, Bogolyubov variation17845.5%56.5%
D25QGA, 4.e316735.9%56.9%
D25QGA, Flohr variation9328.0%65.6%
D25QGA, Janowsky-Larsen variation48138.9%57.9%
D25QGA, Smyslov variation10352.4%59.2%
D26QGA, 4...e630842.9%53.2%
D26QGA, classical variation82151.6%53.1%
D26QGA, classical variation, 6.O-O17448.3%58.6%
D26QGA, classical, Furman variation366.7%33.3%
D26QGA, classical, Steinitz variation9955.6%62.1%
D27QGA, classical, 6...a6418451.3%55.1%
D27QGA, classical, Geller variation8852.3%56.8%
D27QGA, classical, Rubinstein variation154647.9%56.2%
D28QGA, classical, 7...b524951.0%54.8%
D28QGA, classical, 7.Qe26750.7%61.2%
D28QGA, classical, Flohr variation10.0%0.0%
D29QGA, classical, 8...Bb734241.2%48.1%
D29QGA, classical, Smyslov variation4252.4%45.2%
D30QGD94846.5%52.5%
D30QGD Slav41342.4%54.6%
D30QGD Slav, Semmering variation3432.4%45.6%
D30QGD, Capablanca variation3531.4%58.6%
D30QGD, Capablanca-Duras variation38744.4%53.2%
D30QGD, Hastings variation66147.5%52.0%
D30QGD, Stonewall variation250.0%75.0%
D30QGD, Vienna variation89852.4%52.5%
D30Queen's gambit declined678744.3%55.4%
D31QGD, 3.Nc3108639.1%54.4%
D31QGD, Alapin variation1323.1%65.4%
D31QGD, Charousek (Petrosian) variation185045.2%53.8%
D31QGD, Janowski variation25141.8%55.2%
D31QGD, semi-Slav125639.6%53.9%
D31QGD, semi-Slav, Abrahams variation15733.8%42.4%
D31QGD, semi-Slav, Junge variation1030.0%35.0%
D31QGD, semi-Slav, Koomen variation955.6%38.9%
D31QGD, semi-Slav, Marshall gambit108642.9%54.1%
D31QGD, semi-Slav, Noteboom variation32037.8%50.8%
D32QGD, Tarrasch defence45544.8%53.2%
D32QGD, Tarrasch defence, 4.cd ed4134.1%43.9%
D32QGD, Tarrasch defence, Marshall gambit850.0%50.0%
D32QGD, Tarrasch defence, Tarrasch gambit1145.5%40.9%
D32QGD, Tarrasch, von Hennig-Schara gambit8237.8%62.8%
D33QGD, Tarrasch, Folkestone (Swedish) variation16347.9%53.4%
D33QGD, Tarrasch, Prague variation16837.5%52.1%
D33QGD, Tarrasch, Schlechter-Rubinstein system4537.8%50.0%
D33QGD, Tarrasch, Schlechter-Rubinstein system, Rey Ardid variation250.0%25.0%
D33QGD, Tarrasch, Wagner variation3554.3%52.9%
D34QGD, Tarrasch, Prague variation, 7...Be718743.3%55.9%
D34QGD, Tarrasch, Prague variation, 9.Bg560146.8%58.3%
D34QGD, Tarrasch, Prague variation, Normal position70649.0%55.8%
D34QGD, Tarrasch, Reti variation3161.3%59.7%
D35QGD, 3...Nf611235.7%51.8%
D35QGD, Harrwitz attack24551.8%55.3%
D35QGD, exchange variation40842.4%55.5%
D35QGD, exchange, Saemisch variation35246.3%53.6%
D35QGD, exchange, positional line114940.9%54.6%
D35QGD, exchange, positional line, 5...c689143.0%55.3%
D36QGD, exchange, positional line, 6.Qc240841.4%53.8%
D37QGD, 4.Nf3631346.0%53.1%
D37QGD, classical variation (5.Bf4)470344.9%55.2%
D38QGD, Ragozin variation496245.9%52.7%
D39QGD, Ragozin, Vienna variation169849.1%51.4%
D40QGD, Semi-Tarrasch defence44142.6%55.1%
D40QGD, Semi-Tarrasch defence, Pillsbury variation7047.1%59.3%
D40QGD, Semi-Tarrasch, Levenfish variation10.0%100.0%
D40QGD, Semi-Tarrasch, symmetrical variation2040.0%55.0%
D41QGD, Semi-Tarrasch with e326242.7%58.0%
D41QGD, Semi-Tarrasch, 5.cd72148.1%56.8%
D41QGD, Semi-Tarrasch, Kmoch variation966.7%44.4%
D41QGD, Semi-Tarrasch, San Sebastian variation2437.5%77.1%
D42QGD, Semi-Tarrasch, 7.Bd334144.0%54.5%
D43QGD semi-Slav796241.3%52.8%
D43QGD semi-Slav, Hastings variation520.0%90.0%
D44QGD semi-Slav, 5.Bg5 dc18347.5%50.0%
D44QGD semi-Slav, Botvinnik system (anti-Meran)8137.0%56.8%
D44QGD semi-Slav, Ekstrom variation2646.2%38.5%
D44QGD semi-Slav, anti-Meran gambit80135.1%58.4%
D44QGD semi-Slav, anti-Meran, Alatortsev system1100.0%50.0%
D44QGD semi-Slav, anti-Meran, Lilienthal variation17030.0%66.2%
D44QGD semi-Slav, anti-Meran, Szabo variation2420.8%35.4%
D45QGD semi-Slav, 5...Nd760937.6%53.0%
D45QGD semi-Slav, 5.e345639.7%56.7%
D45QGD semi-Slav, Rubinstein (anti-Meran) system1729.4%44.1%
D45QGD semi-Slav, Stoltz variation1228943.5%53.2%
D45QGD semi-Slav, accelerated Meran (Alekhine variation)235543.8%54.1%
D45QGD semi-Slav, stonewall defence1250.0%50.0%
D46QGD semi-Slav, 6.Bd34235.7%65.5%
D46QGD semi-Slav, Bogolyubov variation17843.8%56.2%
D46QGD semi-Slav, Chigorin defence45146.3%54.0%
D46QGD semi-Slav, Romih variation18835.1%63.8%
D47QGD semi-Slav, 7.Bc47433.8%54.7%
D47QGD semi-Slav, Meran variation137049.6%54.3%
D47QGD semi-Slav, Meran, Wade variation703539.6%53.6%
D47QGD semi-Slav, neo-Meran (Lundin variation)32448.5%54.5%
D48QGD semi-Slav, Meran205.0%37.5%
D48QGD semi-Slav, Meran, 8...a6142649.4%48.7%
D48QGD semi-Slav, Meran, Pirc variation955.6%72.2%
D48QGD semi-Slav, Meran, Reynolds' variation77840.0%56.4%
D48QGD semi-Slav, Meran, old main line11837.3%53.4%
D49QGD semi-Slav, Meran, Blumenfeld variation19443.8%53.4%
D49QGD semi-Slav, Meran, Rabinovich variation7830.8%47.4%
D49QGD semi-Slav, Meran, Rellstab attack1637.5%62.5%
D49QGD semi-Slav, Meran, Sozin variation16643.4%47.0%
D49QGD semi-Slav, Meran, Stahlberg variation8041.3%45.6%
D50QGD, 4.Bg536537.8%57.3%
D50QGD, Been-Koomen variation2454.2%47.9%
D50QGD, Canal (Venice) variation825.0%62.5%
D50QGD, Semi-Tarrasch5154.9%51.0%
D50QGD, Semi-Tarrasch, Krause variation1100.0%50.0%
D50QGD, Semi-Tarrasch, Primitive Pillsbury variation1338.5%57.7%
D51QGD3946.2%59.0%
D51QGD, 4.Bg5 Nbd79239.1%54.3%
D51QGD, 5...c616844.6%50.3%
D51QGD, Alekhine variation40.0%50.0%
D51QGD, Capablanca anti-Cambridge Springs variation3542.9%64.3%
D51QGD, Manhattan variation2045.0%57.5%
D51QGD, Rochlin variation944.4%44.4%
D52QGD19138.2%57.9%
D52QGD, Cambridge Springs defence4143.9%48.8%
D52QGD, Cambridge Springs defence, 7.cd6429.7%50.8%
D52QGD, Cambridge Springs defence, Argentine variation2128.6%42.9%
D52QGD, Cambridge Springs defence, Bogoljubow variation48648.8%55.2%
D52QGD, Cambridge Springs defence, Capablanca variation3636.1%59.7%
D52QGD, Cambridge Springs defence, Rubinstein variation18440.2%55.4%
D52QGD, Cambridge Springs defence, Yugoslav variation47237.7%55.9%
D53QGD, 4.Bg5 Be7110945.5%55.1%
D53QGD, 4.Bg5 Be7, 5.e3 O-O7444.6%52.0%
D53QGD, Lasker variation633.3%66.7%
D54QGD, Anti-neo-orthodox variation11342.5%54.0%
D55QGD, 6.Nf316636.7%56.3%
D55QGD, Neo-orthodox variation837.5%56.3%
D55QGD, Neo-orthodox variation, 7.Bh417047.1%55.9%
D55QGD, Neo-orthodox variation, 7.Bxf637745.9%50.8%
D55QGD, Petrosian variation38853.4%53.2%
D55QGD, Pillsbury attack250.0%75.0%
D56QGD, Lasker defence45146.1%53.2%
D56QGD, Lasker defence, Teichmann variation10950.5%49.1%
D57QGD, Lasker defence, Bernstein variation2462.5%52.1%
D57QGD, Lasker defence, main line14553.8%53.8%
D58QGD, Tartakower (Makagonov-Bondarevsky) system513546.4%52.0%
D59QGD, Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd523347.6%46.1%
D59QGD, Tartakower variation12346.3%47.6%
D60QGD, Orthodox defence11634.5%53.4%
D60QGD, Orthodox defence, Botvinnik variation9233.7%51.6%
D60QGD, Orthodox defence, Rauzer variation9646.9%57.8%
D61QGD, Orthodox defence, Rubinstein variation35343.6%53.3%
D62QGD, Orthodox defence, 7.Qc2 c5, 8.cd (Rubinstein)21850.5%55.5%
D63QGD, Orthodox defence11546.1%59.6%
D63QGD, Orthodox defence, 7.Rc126139.8%56.3%
D63QGD, Orthodox defence, Capablanca variation366.7%66.7%
D63QGD, Orthodox defence, Pillsbury attack2552.0%58.0%
D63QGD, Orthodox defence, Swiss (Henneberger) variation10644.3%61.8%
D63QGD, Orthodox defence, Swiss, Karlsbad variation28743.9%53.0%
D64QGD, Orthodox defence, Rubinstein attack (with Rc1)10645.3%55.7%
D64QGD, Orthodox defence, Rubinstein attack, Gruenfeld variation3429.4%61.8%
D64QGD, Orthodox defence, Rubinstein attack, Karlsbad variation2236.4%36.4%
D64QGD, Orthodox defence, Rubinstein attack, Wolf variation1346.2%46.2%
D65QGD, Orthodox defence, Rubinstein attack, main line1947.4%65.8%
D66QGD, Orthodox defence, Bd3 line30547.2%58.4%
D66QGD, Orthodox defence, Bd3 line, fianchetto variation2245.5%63.6%
D67QGD, Orthodox defence, Bd3 line1957.9%44.7%
D67QGD, Orthodox defence, Bd3 line, 11.O-O6235.5%66.1%
D67QGD, Orthodox defence, Bd3 line, Alekhine variation6155.7%62.3%
D68QGD, Orthodox defence, classical variation7749.4%55.8%
D68QGD, Orthodox defence, classical, 13.d1b1 (Maroczy)366.7%33.3%
D68QGD, Orthodox defence, classical, 13.d1c2 (Vidmar)5156.9%57.8%
D69QGD, Orthodox defence, classical, 13.de1650.0%56.3%
D70Neo-Gruenfeld (Kemeri) defence18237.4%52.2%
D70Neo-Gruenfeld defence27836.3%53.4%
D71Neo-Gruenfeld, 5.cd33246.4%55.7%
D72Neo-Gruenfeld, 5.cd, main line25034.0%60.2%
D73Neo-Gruenfeld, 5.Nf389350.6%55.5%
D74Neo-Gruenfeld, 6.cd Nxd5, 7.O-O26745.7%56.6%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc318747.6%58.6%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.dc3030.0%68.3%
D76Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb657544.7%58.0%
D77Neo-Gruenfeld, 6.O-O76446.1%54.7%
D78Neo-Gruenfeld, 6.O-O c686643.0%54.3%
D79Neo-Gruenfeld, 6.O-O, main line56948.7%54.6%
D80Gruenfeld defence113945.0%53.6%
D80Gruenfeld, Lundin variation10.0%0.0%
D80Gruenfeld, Stockholm variation82343.4%53.8%
D81Gruenfeld, Russian variation63540.9%60.3%
D82Gruenfeld, 4.Bf465843.0%53.1%
D83Gruenfeld, Gruenfeld gambit6645.5%56.1%
D83Gruenfeld, Gruenfeld gambit, Botvinnik variation2356.5%63.0%
D83Gruenfeld, Gruenfeld gambit, Capablanca variation41941.3%57.4%
D84Gruenfeld, Gruenfeld gambit accepted12043.3%55.8%
D85Gruenfeld, exchange variation340147.2%56.2%
D85Gruenfeld, modern exchange variation337846.8%56.1%
D86Gruenfeld, exchange, Larsen variation1136.4%54.5%
D86Gruenfeld, exchange, Simagin's improved variation15039.3%54.3%
D86Gruenfeld, exchange, Simagin's lesser variation5743.9%58.8%
D86Gruenfeld, exchange, classical variation115346.5%55.4%
D87Gruenfeld, exchange, Seville variation9054.4%61.7%
D87Gruenfeld, exchange, Spassky variation58742.6%56.0%
D88Gruenfeld, Spassky variation, main line, 10...cd, 11.cd25341.5%61.5%
D89Gruenfeld, Spassky variation, main line, 13.Bd37439.2%48.0%
D89Gruenfeld, exchange, Sokolsky variation1241.7%45.8%
D90Gruenfeld, Flohr variation34337.0%55.2%
D90Gruenfeld, Schlechter variation4025.0%47.5%
D90Gruenfeld, Three knights variation74748.2%54.1%
D91Gruenfeld, 5.Bg598939.4%48.0%
D92Gruenfeld, 5.Bf480044.9%56.1%
D93Gruenfeld with Bf4 e334850.0%53.7%
D94Gruenfeld with e3 Bd32334.8%47.8%
D94Gruenfeld, 5.e346443.8%57.0%
D94Gruenfeld, Flohr defence2352.2%60.9%
D94Gruenfeld, Makogonov variation12441.1%50.4%
D94Gruenfeld, Opovcensky variation19441.2%52.6%
D94Gruenfeld, Smyslov defence17345.7%57.5%
D95Gruenfeld with e3 & Qb34136.6%59.8%
D95Gruenfeld, Botvinnik variation10339.8%50.0%
D96Gruenfeld, Russian variation35441.0%52.1%
D97Gruenfeld, Russian variation with e45733.3%62.3%
D97Gruenfeld, Russian, Alekhine (Hungarian) variation180944.8%51.2%
D97Gruenfeld, Russian, Byrne (Simagin) variation14841.2%59.1%
D97Gruenfeld, Russian, Levenfish variation2035.0%57.5%
D97Gruenfeld, Russian, Prins variation47644.1%56.9%
D97Gruenfeld, Russian, Szabo (Boleslavsky) variation25844.2%58.5%
D98Gruenfeld, Russian, Keres variation2147.6%47.6%
D98Gruenfeld, Russian, Smyslov variation34441.0%58.9%
D99Gruenfeld defence, Smyslov, Yugoslav variation2321.7%45.7%
D99Gruenfeld defence, Smyslov, main line20140.3%58.5%
E00Catalan opening390342.0%54.8%
E00Neo-Indian (Seirawan) attack24928.5%50.0%
E00Queen's pawn game53038.1%56.6%
E01Catalan, closed63947.6%53.4%
E02Catalan, open, 5.Qa418244.5%58.0%
E03Catalan, open, 5.Qa4 Nbd7, 6.Qxc414148.2%44.0%
E03Catalan, open, Alekhine variation4431.8%47.7%
E04Catalan, open, 5.Nf3489043.6%53.8%
E05Catalan, open, classical line15052.7%56.3%
E06Catalan, closed, 5.Nf3333248.3%54.2%
E07Catalan, closed, 6...Nbd711942.9%52.5%
E07Catalan, closed, Botvinnik variation11336.3%47.3%
E08Catalan, closed, 7.Qc211937.0%61.3%
E08Catalan, closed, Qc2 & b328240.1%51.2%
E08Catalan, closed, Spassky gambit728.6%57.1%
E08Catalan, closed, Zagoryansky variation862.5%56.3%
E09Catalan, closed, Sokolsky variation520.0%50.0%
E09Catalan, closed, main line28034.6%59.1%
E10Blumenfeld counter-gambit36940.4%56.5%
E10Blumenfeld counter-gambit accepted13941.0%53.6%
E10Blumenfeld counter-gambit, Dus-Chotimursky variation22934.9%55.5%
E10Blumenfeld counter-gambit, Spielmann variation14835.1%59.5%
E10Doery defence3138.7%58.1%
E10Dzindzikhashvili defence14342.7%52.8%
E10Queen's pawn game490644.2%55.3%
E11Bogo-Indian defence193739.8%54.9%
E11Bogo-Indian defence, Gruenfeld variation245539.9%56.4%
E11Bogo-Indian defence, Monticelli trap2142.9%40.5%
E11Bogo-Indian defence, Nimzovich variation169638.9%57.5%
E12Queen's Indian defence74640.9%54.2%
E12Queen's Indian, 4.Nc3509640.2%53.2%
E12Queen's Indian, 4.Nc3, Botvinnik variation4425.0%48.9%
E12Queen's Indian, Miles variation160442.9%53.8%
E12Queen's Indian, Petrosian system742242.9%54.2%
E13Queen's Indian, 4.Nc3, main line26636.5%52.8%
E14Queen's Indian, 4.e3188839.5%53.3%
E14Queen's Indian, Averbakh variation425.0%37.5%
E15Queen's Indian, 4.g3286547.3%55.2%
E15Queen's Indian, 4.g3 Bb735840.2%53.4%
E15Queen's Indian, Buerger variation5937.3%61.0%
E15Queen's Indian, Nimzovich variation (exaggerated fianchetto)1614641.3%56.5%
E15Queen's Indian, Rubinstein variation17135.7%59.9%
E16Queen's Indian, Capablanca variation53442.3%57.3%
E16Queen's Indian, Riumin variation25638.3%58.2%
E16Queen's Indian, Yates variation46139.9%57.9%
E17Queen's Indian, 5.Bg2 Be74537.8%47.8%
E17Queen's Indian, Euwe variation7448.6%54.1%
E17Queen's Indian, Opovcensky variation78540.3%55.2%
E17Queen's Indian, anti-Queen's Indian system42941.3%52.6%
E17Queen's Indian, old main line, 6.O-O115542.7%58.1%
E18Queen's Indian, old main line, 7.Nc3181743.5%56.9%
E19Queen's Indian, old main line, 9.Qxc3145147.1%58.1%
E20Nimzo-Indian defence21346.5%51.9%
E20Nimzo-Indian, Kmoch variation104037.3%53.8%
E20Nimzo-Indian, Mikenas attack850.0%62.5%
E20Nimzo-Indian, Romanishin-Kasparov (Steiner) system54344.0%54.1%
E21Nimzo-Indian, three knights variation299840.8%54.4%
E21Nimzo-Indian, three knights, Euwe variation650.0%58.3%
E21Nimzo-Indian, three knights, Korchnoi variation40.0%50.0%
E22Nimzo-Indian, Spielmann variation50237.8%51.8%
E23Nimzo-Indian, Spielmann, 4...c5, 5.dc Nc69038.9%48.3%
E23Nimzo-Indian, Spielmann, Karlsbad variation3729.7%47.3%
E23Nimzo-Indian, Spielmann, San Remo variation1741.2%50.0%
E23Nimzo-Indian, Spielmann, Staahlberg variation20.0%100.0%
E24Nimzo-Indian, Saemisch variation37337.3%52.4%
E24Nimzo-Indian, Saemisch, Botvinnik variation8536.5%45.3%
E25Nimzo-Indian, Saemisch variation18842.6%54.8%
E25Nimzo-Indian, Saemisch, Keres variation31646.5%54.6%
E25Nimzo-Indian, Saemisch, Romanovsky variation12352.8%52.4%
E26Nimzo-Indian, Saemisch variation22437.5%56.3%
E26Nimzo-Indian, Saemisch, O'Kelly variation5139.2%51.0%
E27Nimzo-Indian, Saemisch variation9741.2%49.5%
E28Nimzo-Indian, Saemisch variation28330.0%52.8%
E29Nimzo-Indian, Saemisch, Capablanca variation3644.4%41.7%
E29Nimzo-Indian, Saemisch, main line13137.4%59.2%
E30Nimzo-Indian, Leningrad variation84934.2%49.7%
E30Nimzo-Indian, Leningrad, ...b5 gambit8234.1%47.6%
E31Nimzo-Indian, Leningrad, main line35933.4%51.0%
E32Nimzo-Indian, classical variation710542.1%54.0%
E32Nimzo-Indian, classical, Adorjan gambit11743.6%52.6%
E33Nimzo-Indian, classical, 4...Nc623336.5%56.9%
E33Nimzo-Indian, classical, Milner-Barry (Zurich) variation41739.3%58.3%
E34Nimzo-Indian, classical, Noa variation90752.6%54.3%
E35Nimzo-Indian, classical, Noa variation, 5.cd ed68348.3%50.1%
E36Nimzo-Indian, classical, Botvinnik variation1442.9%57.1%
E36Nimzo-Indian, classical, Noa variation, 5.a338842.5%52.4%
E37Nimzo-Indian, classical, Noa variation, main line, 7.Qc249547.3%61.6%
E37Nimzo-Indian, classical, San Remo variation1127.3%59.1%
E38Nimzo-Indian, classical, 4...c570236.9%60.0%
E39Nimzo-Indian, classical, Pirc variation106239.9%55.2%
E40Nimzo-Indian, 4.e322729.1%57.7%
E40Nimzo-Indian, 4.e3, Taimanov variation18731.6%59.6%
E41Nimzo-Indian, 4.e3 c590143.4%54.9%
E41Nimzo-Indian, e3, Huebner variation50333.6%51.8%
E42Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein)76746.3%54.2%
E43Nimzo-Indian, Fischer variation68936.3%53.6%
E44Nimzo-Indian, Fischer variation, 5.Ne262437.5%56.1%
E45Nimzo-Indian, 4.e3, Bronstein (Byrne) variation40741.0%55.4%
E46Nimzo-Indian, 4.e3 O-O9633.3%54.2%
E46Nimzo-Indian, Reshevsky variation104043.7%51.1%
E46Nimzo-Indian, Simagin variation17740.1%47.7%
E47Nimzo-Indian, 4.e3 O-O, 5.Bd375146.2%52.3%
E48Nimzo-Indian, 4.e3 O-O, 5.Bd3 d564342.9%50.5%
E49Nimzo-Indian, 4.e3, Botvinnik system26544.2%56.0%
E50Nimzo-Indian, 4.e3 e8g8, 5.Nf3, without ...d524541.6%49.4%
E51Nimzo-Indian, 4.e3 e8g8, 5.Nf3 d7d528548.1%51.4%
E51Nimzo-Indian, 4.e3, Ragozin variation4240.5%67.9%
E52Nimzo-Indian, 4.e3, main line with ...b659239.2%52.0%
E53Nimzo-Indian, 4.e3, Gligoric system with 7...Nbd78151.9%50.6%
E53Nimzo-Indian, 4.e3, Keres variation11236.6%47.8%
E53Nimzo-Indian, 4.e3, main line with ...c544042.0%54.9%
E54Nimzo-Indian, 4.e3, Gligoric system with 7...dc129848.1%55.8%
E54Nimzo-Indian, 4.e3, Gligoric system, Smyslov variation3161.3%66.1%
E55Nimzo-Indian, 4.e3, Gligoric system, Bronstein variation197348.2%55.7%
E56Nimzo-Indian, 4.e3, main line with 7...Nc643751.5%55.3%
E57Nimzo-Indian, 4.e3, main line with 8...dc and 9...cd1338.5%57.7%
E58Nimzo-Indian, 4.e3, main line with 8...Bxc3154244.9%52.8%
E59Nimzo-Indian, 4.e3, main line77243.5%53.5%
E60King's Indian defence111232.5%55.1%
E60King's Indian, 3.Nf3332039.4%57.7%
E60King's Indian, 3.g3210842.2%55.7%
E60King's Indian, 3.g3, counterthrust variation1533.3%30.0%
E60King's Indian, Anti-Gruenfeld6331.7%60.3%
E60King's Indian, Danube gambit1241.7%54.2%
E60Queen's pawn, Mengarini attack3935.9%61.5%
E61King's Indian defence, 3.Nc3129734.9%55.6%
E61King's Indian, Smyslov system10835.2%54.6%
E62King's Indian, fianchetto variation8536.5%52.4%
E62King's Indian, fianchetto with ...Nc626932.7%56.5%
E62King's Indian, fianchetto, Kavalek (Bronstein) variation58932.8%60.7%
E62King's Indian, fianchetto, Larsen system31740.4%62.1%
E62King's Indian, fianchetto, Simagin variation9733.0%62.9%
E62King's Indian, fianchetto, Uhlmann (Szabo) variation33333.9%58.1%
E62King's Indian, fianchetto, lesser Simagin (Spassky) variation36336.9%60.6%
E63King's Indian, fianchetto, Panno variation232138.0%56.8%
E64King's Indian, fianchetto, Yugoslav system12537.6%59.6%
E65King's Indian, fianchetto, Yugoslav, 7.O-O26846.6%55.0%
E66King's Indian, fianchetto, Yugoslav Panno35233.2%57.5%
E67King's Indian, fianchetto with ...Nd711638.8%56.5%
E67King's Indian, fianchetto, classical variation57641.5%54.9%
E68King's Indian, fianchetto, classical variation, 8.e4136639.7%59.9%
E69King's Indian, fianchetto, classical main line51032.4%62.3%
E70King's Indian, 4.e4121632.3%58.3%
E70King's Indian, Kramer system47031.1%56.6%
E70King's Indian, accelerated Averbakh system16333.7%53.7%
E71King's Indian, Makagonov system (5.h3)93234.8%59.2%
E72King's Indian with e4 & g312932.6%56.6%
E72King's Indian, Pomar system4235.7%56.0%
E73King's Indian, 5.Be24429.5%60.2%
E73King's Indian, Averbakh system118934.3%55.8%
E73King's Indian, Semi-Averbakh system9735.1%58.8%
E74King's Indian, Averbakh, 6...c540636.9%56.9%
E75King's Indian, Averbakh, main line19532.3%57.2%
E76King's Indian, Four pawns attack29635.5%59.3%
E76King's Indian, Four pawns attack, dynamic line25436.6%50.6%
E77King's Indian, Four pawns attack18631.2%58.6%
E77King's Indian, Four pawns attack, 6.Be23548.6%52.9%
E77King's Indian, Four pawns attack, Florentine gambit1637.5%43.8%
E78King's Indian, Four pawns attack, with Be2 and Nf37636.8%59.2%
E79King's Indian, Four pawns attack, main line3951.3%56.4%
E80King's Indian, Saemisch variation55732.7%59.1%
E81King's Indian, Saemisch, 5...O-O249034.6%54.8%
E81King's Indian, Saemisch, Byrne variation9239.1%56.5%
E82King's Indian, Saemisch, double fianchetto variation15435.1%58.4%
E83King's Indian, Saemisch, 6...Nc613030.0%48.8%
E83King's Indian, Saemisch, Panno formation36338.0%56.7%
E83King's Indian, Saemisch, Ruban variation1526.7%46.7%
E84King's Indian, Saemisch, Panno main line57736.2%54.3%
E85King's Indian, Saemisch, orthodox variation14637.0%53.4%
E86King's Indian, Saemisch, orthodox, 7.Nge2 c651830.7%54.2%
E87King's Indian, Saemisch, orthodox, 7.d541325.2%56.9%
E87King's Indian, Saemisch, orthodox, Bronstein variation1100.0%50.0%
E88King's Indian, Saemisch, orthodox, 7.d5 c641832.5%56.9%
E89King's Indian, Saemisch, orthodox main line6532.3%56.2%
E90King's Indian, 5.Nf3101933.0%57.1%
E90King's Indian, Larsen variation11335.4%59.3%
E90King's Indian, Zinnowitz variation6338.1%54.0%
E91King's Indian, 6.Be267833.6%64.2%
E91King's Indian, Kazakh variation32937.1%56.8%
E92King's Indian, Andersson variation32052.8%49.2%
E92King's Indian, Gligoric-Taimanov system155834.7%58.5%
E92King's Indian, Petrosian system12929.5%52.7%
E92King's Indian, Petrosian system, Stein variation66533.7%54.1%
E92King's Indian, classical variation3531.4%47.1%
E93King's Indian, Petrosian system, main line10431.7%48.6%
E94King's Indian, orthodox variation106837.5%54.2%
E94King's Indian, orthodox, 7...Nbd797034.1%59.8%
E94King's Indian, orthodox, Donner variation24835.1%59.5%
E95King's Indian, orthodox, 7...Nbd7, 8.Re143937.6%55.7%
E96King's Indian, orthodox, 7...Nbd7, main line9135.2%60.4%
E97King's Indian, orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation)415833.3%55.9%
E97King's Indian, orthodox, Aronin-Taimanov, bayonet attack133235.7%58.3%
E98King's Indian, orthodox, Aronin-Taimanov, 9.Ne192726.2%61.2%
E99King's Indian, orthodox, Aronin-Taimanov, Benko attack13321.8%60.5%
E99King's Indian, orthodox, Aronin-Taimanov, main line4738.3%63.8%

Created in 2005-2013 by CCRL team
Last games added on March 16, 2019