CCRL 40/4
Downloads and Statistics
February 17, 2018
Testing summary:
Total: 1'671'765 games
played by 1'982 programs
22445 CPU days (X2 4600+)

White wins: 653'018 (39.1%)
Black wins: 530'657 (31.7%)
Draws: 488'090 (29.2%)
White score: 53.7%

Opening statistics

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

ECOOpeningNumber
of
games
DrawsWhite
score
A00Amar (Paris) opening7622.4%41.4%
A00Amar gambit1216.7%50.0%
A00Amsterdam attack933.3%50.0%
A00Anderssen's opening70321.9%47.5%
A00Anti-Borg (Desprez) opening2321.7%58.7%
A00Battambang opening933.3%27.8%
A00Benko's opening1152330.9%51.0%
A00Benko's opening, reversed Alekhine11326.5%48.7%
A00Clemenz (Mead's, Basman's or de Klerk's) opening487023.4%49.6%
A00Dunst (Sleipner, Heinrichsen) opening191523.3%52.1%
A00Durkin's attack6717.9%53.7%
A00Gedult's opening3116.1%40.3%
A00Global opening1618.8%71.9%
A00Grob's attack23222.0%49.4%
A00Grob, Fritz gambit3910.3%20.5%
A00Lasker simul special14027.9%46.8%
A00Mieses opening50518.4%52.8%
A00Novosibirsk opening258.0%48.0%
A00Polish (Sokolsky) opening149828.0%50.5%
A00Polish, Outflank variation27624.6%49.3%
A00Polish, Tuebingen variation7321.9%52.1%
A00Saragossa opening93519.5%50.7%
A00Van't Kruijs opening129426.6%52.0%
A00Ware (Meadow Hay) opening20521.5%47.3%
A01Nimzovich-Larsen attack94226.0%51.3%
A01Nimzovich-Larsen attack, Dutch variation16721.0%50.6%
A01Nimzovich-Larsen attack, English variation41627.9%51.2%
A01Nimzovich-Larsen attack, Indian variation77226.7%53.6%
A01Nimzovich-Larsen attack, Polish variation2634.6%51.9%
A01Nimzovich-Larsen attack, classical variation181326.7%48.4%
A01Nimzovich-Larsen attack, modern variation298230.8%49.8%
A01Nimzovich-Larsen attack, symmetrical variation61730.1%49.6%
A02Bird's opening285829.5%49.7%
A02Bird's opening, Swiss gambit1414.3%64.3%
A02Bird, From gambit8028.8%46.9%
A02Bird, From gambit, Lasker variation3414.7%54.4%
A02Bird, From gambit, Lipke variation520.0%30.0%
A02Bird, Hobbs gambit425.0%62.5%
A03Bird's opening303824.4%48.6%
A03Bird's opening, Lasker variation5733.3%51.8%
A03Bird's opening, Williams gambit1816.7%58.3%
A03Mujannah opening70.0%42.9%
A04Reti opening1537528.0%53.0%
A04Reti v Dutch243326.1%56.7%
A04Reti, Lisitsin gambit deferred5820.7%43.1%
A04Reti, Pirc-Lisitsin gambit15822.2%58.5%
A04Reti, Wade defence540.0%80.0%
A05Reti opening966628.7%52.7%
A05Reti, King's Indian attack223529.6%55.8%
A05Reti, King's Indian attack, Reti-Smyslov variation14727.9%50.7%
A05Reti, King's Indian attack, Spassky's variation80729.9%53.2%
A06Reti opening329727.0%53.5%
A06Reti, Nimzovich-Larsen attack414131.3%51.1%
A06Reti, old Indian attack32324.5%52.5%
A06Santasiere's folly13536.3%45.6%
A06Tennison (Lemberg, Zukertort) gambit1921.1%57.9%
A07Reti, King's Indian attack329833.7%52.7%
A07Reti, King's Indian attack (Barcza system)1022029.8%53.1%
A07Reti, King's Indian attack (with ...c5)43425.6%48.5%
A07Reti, King's Indian attack, Keres variation75230.9%52.0%
A07Reti, King's Indian attack, Pachman system25323.3%52.0%
A07Reti, King's Indian attack, Yugoslav variation489931.3%53.9%
A08Reti, King's Indian attack119530.6%54.9%
A08Reti, King's Indian attack, French variation113231.0%50.8%
A09Reti accepted128927.5%53.1%
A09Reti accepted, Keres variation12121.5%59.5%
A09Reti opening103927.3%53.6%
A09Reti, advance variation159325.7%47.8%
A10English opening489225.5%53.5%
A10English, Adorjan defence53936.5%51.7%
A10English, Anglo-Dutch defense135124.9%55.4%
A10English, Jaenisch gambit1921.1%68.4%
A11English, Caro-Kann defensive system149427.8%56.0%
A12English, Bled variation4431.8%59.1%
A12English, Capablanca's variation7427.0%48.6%
A12English, Caro-Kann defensive system27928.0%55.6%
A12English, Caro-Kann defensive system, Bogolyubov variation13822.5%51.1%
A12English, London defensive system38331.9%49.3%
A12English, New York (London) defensive system4533.3%45.6%
A12English, Torre defensive system38534.5%51.8%
A13English opening483125.6%52.9%
A13English opening, Agincourt variation285427.9%52.2%
A13English, Kurajica defence12025.0%51.7%
A13English, Neo-Catalan178330.3%53.5%
A13English, Neo-Catalan accepted230533.5%54.3%
A13English, Romanishin gambit76430.6%54.5%
A13English, Wimpey system33130.8%46.5%
A14English, Neo-Catalan declined112536.0%52.7%
A14English, Symmetrical, Keres defence89436.2%54.9%
A15English opening1282933.2%54.0%
A15English, 1...Nf6 (Anglo-Indian defense)163926.6%52.5%
A16English opening120027.7%54.1%
A16English, Anglo-Gruenfeld defense31730.0%52.2%
A16English, Anglo-Gruenfeld defense, Korchnoi variation1533.3%70.0%
A16English, Anglo-Gruenfeld, Czech defense12730.7%66.5%
A16English, Anglo-Gruenfeld, Smyslov defense7739.0%59.7%
A17English opening36831.3%52.9%
A17English, Nimzo-English opening255431.1%54.6%
A17English, Queens Indian formation22825.9%54.6%
A17English, Queens Indian, Romanishin variation4835.4%46.9%
A18English, Mikenas-Carls variation10424.0%56.3%
A18English, Mikenas-Carls, Flohr variation16731.1%59.9%
A18English, Mikenas-Carls, Kevitz variation4717.0%55.3%
A19English, Mikenas-Carls, Sicilian variation25828.7%55.4%
A20English opening1099628.5%52.2%
A20English, Nimzovich variation29526.8%54.4%
A20English, Nimzovich, Flohr variation66329.4%46.4%
A21English opening334827.3%54.2%
A21English, Keres variation2634.6%44.2%
A21English, Kramnik-Shirov counterattack365328.6%52.5%
A21English, Smyslov defence5326.4%56.6%
A21English, Troeger defence17027.6%54.4%
A22English opening104925.7%50.4%
A22English, Bellon gambit1612.5%43.8%
A22English, Bremen, Smyslov system268328.1%48.9%
A22English, Bremen, reverse dragon164634.7%53.3%
A22English, Carls' Bremen system85526.3%55.1%
A23English, Bremen system, Keres variation45133.3%49.0%
A24English, Bremen system with ...g68226.8%61.0%
A25English, Sicilian reversed109126.7%51.7%
A25English, closed system137528.3%53.2%
A25English, closed system (without ...d6)9924.2%48.5%
A25English, closed, 5.Rb168128.5%51.8%
A25English, closed, 5.Rb1 Taimanov variation425.0%37.5%
A25English, closed, Hort variation4131.7%50.0%
A25English, closed, Taimanov variation2737.0%44.4%
A26English, Botvinnik system41324.5%48.1%
A26English, closed system33823.1%50.9%
A27English, three knights system49427.3%52.9%
A28English, Bradley Beach variation18829.3%43.9%
A28English, Nenarokov variation7733.8%46.8%
A28English, four knights system63525.2%52.3%
A28English, four knights, 4.e3141428.1%51.5%
A28English, four knights, Capablanca variation49729.4%52.9%
A28English, four knights, Marini variation142931.7%54.1%
A28English, four knights, Nimzovich variation141330.3%52.2%
A28English, four knights, Romanishin variation117634.3%50.5%
A28English, four knights, Stean variation17624.4%56.0%
A29English, four knights, kingside fianchetto1696530.7%51.4%
A30English, symmetrical variation863029.2%53.9%
A30English, symmetrical, hedgehog system776531.9%55.8%
A30English, symmetrical, hedgehog, flexible formation58736.3%57.2%
A31English, symmetrical, Benoni formation226128.3%54.5%
A32English, symmetrical variation84728.6%52.4%
A33English, symmetrical variation425535.3%52.1%
A33English, symmetrical, Geller variation297430.7%52.7%
A34English, symmetrical variation189626.5%50.7%
A34English, symmetrical, Rubinstein system36132.7%53.2%
A34English, symmetrical, three knights system241634.9%52.4%
A35English, symmetrical variation38228.3%57.3%
A35English, symmetrical, four knights system408330.2%52.9%
A36English, symmetrical variation17126.3%48.8%
A36English, symmetrical, Botvinnik system65227.9%56.3%
A36English, symmetrical, Botvinnik system reversed15227.0%50.3%
A36English, ultra-symmetrical variation204828.7%49.3%
A37English, symmetrical variation96329.2%52.8%
A37English, symmetrical, Botvinnik system reversed71827.2%51.2%
A38English, symmetrical variation74229.2%52.9%
A38English, symmetrical, main line with b31136.4%36.4%
A38English, symmetrical, main line with d315934.6%50.6%
A39English, symmetrical, main line with d4122337.3%54.7%
A40Beefeater defence3823.7%59.2%
A40Modern defence214224.7%56.3%
A40Polish defence35324.9%57.2%
A40Queen's pawn557725.9%53.6%
A40Queen's pawn, Charlick (Englund) gambit60.0%83.3%
A40Queen's pawn, English defence67221.7%56.3%
A40Queen's pawn, Franco-Indian (Keres) defence336628.8%55.7%
A40Queen's pawn, Keres defence357727.7%55.5%
A40Queen's pawn, Lundin (Kevitz-Mikenas) defence80527.1%56.9%
A41Modern defence10029.0%56.5%
A41Old Indian defence317226.1%51.2%
A41Old Indian, Tartakower (Wade) variation330524.5%58.5%
A41Queen's Pawn492623.4%56.2%
A41Robatsch defence, Rossolimo variation18427.2%54.3%
A42Modern defence, Averbakh system96529.7%57.8%
A42Modern defence, Averbakh system, Kotov variation69825.4%58.2%
A42Modern defence, Averbakh system, Randspringer variation728.6%28.6%
A42Pterodactyl defence111127.2%61.7%
A43Hawk (Habichd) defence425.0%37.5%
A43Old Benoni defence260826.0%55.6%
A43Old Benoni, Franco-Benoni defence16825.6%62.2%
A43Old Benoni, Mujannah formation13721.2%63.9%
A43Old Benoni, Schmid's system2429.2%52.1%
A43Woozle defence4015.0%50.0%
A44Old Benoni defence6225.8%66.1%
A44Semi-Benoni (`blockade variation')110721.0%61.8%
A45Blackmar-Diemer gambit16627.1%54.5%
A45Canard opening2718.5%50.0%
A45Paleface attack19119.9%41.4%
A45Queen's pawn game530726.4%51.2%
A45Queen's pawn, Bronstein gambit1711.8%47.1%
A45Trompovsky attack (Ruth, Opovcensky opening)733525.0%51.7%
A46Doery defence250.0%25.0%
A46Queen's pawn game616027.6%54.0%
A46Queen's pawn, Torre attack136826.5%51.9%
A46Queen's pawn, Torre attack, Wagner gambit2821.4%39.3%
A46Queen's pawn, Yusupov-Rubinstein system129430.2%51.0%
A47Queen's Indian defence96528.0%53.5%
A47Queen's Indian, Marienbad system14130.5%49.3%
A47Queen's Indian, Marienbad system, Berg variation922.2%55.6%
A48King's Indian, East Indian defence165829.1%53.4%
A48King's Indian, London system109328.9%51.8%
A48King's Indian, Torre attack184829.3%49.9%
A49King's Indian, fianchetto without c4218928.2%54.2%
A50Kevitz-Trajkovich defence114327.6%53.5%
A50Queen's Indian accelerated34128.7%58.1%
A50Queen's pawn game196128.3%55.9%
A51Budapest defence declined5422.2%51.9%
A51Budapest, Fajarowicz variation12025.8%62.1%
A51Budapest, Fajarowicz, Steiner variation3100.0%50.0%
A52Budapest defence7423.0%56.1%
A52Budapest, Adler variation65229.9%59.6%
A52Budapest, Alekhine variation6421.9%48.4%
A52Budapest, Alekhine, Abonyi variation5028.0%60.0%
A52Budapest, Rubinstein variation75336.9%58.7%
A53Old Indian defence182329.0%55.5%
A53Old Indian, Janowski variation64119.8%58.4%
A54Old Indian, Dus-Khotimirsky variation812.5%68.8%
A54Old Indian, Ukrainian variation19930.7%50.5%
A54Old Indian, Ukrainian variation, 4.Nf331426.8%54.8%
A55Old Indian, main line118226.9%62.4%
A56Benoni defence156726.5%59.2%
A56Benoni defence, Hromodka system110620.9%58.5%
A56Czech Benoni defence78325.4%61.5%
A56Czech Benoni, King's Indian system33519.4%59.9%
A56Vulture defence30.0%33.3%
A57Benko gambit118124.7%54.6%
A57Benko gambit half accepted122729.7%58.0%
A57Benko gambit, Nescafe Frappe attack120.0%33.3%
A57Benko gambit, Zaitsev system7125.4%50.7%
A58Benko gambit accepted84731.1%55.4%
A58Benko gambit, Nd2 variation1330.8%53.8%
A58Benko gambit, fianchetto variation39829.9%55.2%
A59Benko gambit8632.6%64.0%
A59Benko gambit, 7.e41030.0%65.0%
A59Benko gambit, Ne2 variation1428.6%64.3%
A59Benko gambit, main line95434.1%62.4%
A60Benoni defence22826.8%53.7%
A61Benoni defence73524.6%58.7%
A61Benoni, Nimzovich (knight's tour) variation70127.5%57.1%
A61Benoni, Uhlmann variation10928.4%50.9%
A61Benoni, fianchetto variation6825.0%53.7%
A62Benoni, fianchetto variation136622.8%55.7%
A63Benoni, fianchetto, 9...Nbd711027.3%57.3%
A64Benoni, fianchetto, 11...Re818726.7%52.9%
A65Benoni, 6.e419323.3%59.8%
A66Benoni, Mikenas variation450.0%50.0%
A66Benoni, pawn storm variation560.0%70.0%
A67Benoni, Taimanov variation39319.6%59.2%
A68Benoni, four pawns attack140.0%42.9%
A69Benoni, four pawns attack, main line9332.3%41.9%
A70Benoni, classical with e4 and Nf3155127.0%59.3%
A70Benoni, classical without 9.O-O922.2%77.8%
A71Benoni, classical, 8.Bg512926.4%54.3%
A72Benoni, classical without 9.O-O12528.0%60.4%
A73Benoni, classical, 9.O-O26524.5%53.0%
A74Benoni, classical, 9...a6, 10.a43033.3%53.3%
A75Benoni, classical with ...a6 and 10...Bg415529.0%53.2%
A76Benoni, classical, 9...Re813016.2%59.6%
A77Benoni, classical, 9...Re8, 10.Nd240825.0%55.9%
A78Benoni, classical with ...Re8 and ...Na68634.9%53.5%
A79Benoni, classical, 11.f320020.0%67.0%
A80Dutch799326.5%54.1%
A80Dutch, 2.Bg5 variation240823.1%53.3%
A80Dutch, Korchnoi attack10531.4%52.9%
A80Dutch, Krejcik gambit16733.5%46.7%
A80Dutch, Manhattan (Alapin, Ulvestad) variation12021.7%55.0%
A80Dutch, Spielmann gambit333.3%16.7%
A80Dutch, Von Pretzel gambit333.3%16.7%
A81Dutch defence725628.6%56.1%
A81Dutch defence, Blackburne variation7932.9%62.0%
A81Dutch, Leningrad, Karlsbad variation742.9%64.3%
A82Dutch, Balogh defence1118.2%54.5%
A82Dutch, Staunton gambit16331.3%40.2%
A82Dutch, Staunton gambit, Tartakower variation1618.8%53.1%
A83Dutch, Staunton gambit, Alekhine variation1931.6%63.2%
A83Dutch, Staunton gambit, Chigorin variation5832.8%68.1%
A83Dutch, Staunton gambit, Lasker variation1127.3%50.0%
A83Dutch, Staunton gambit, Nimzovich variation714.3%50.0%
A83Dutch, Staunton gambit, Staunton's line24326.3%46.9%
A84Dutch defence172025.9%56.5%
A84Dutch defence, Rubinstein variation66528.3%56.8%
A84Dutch, Staunton gambit deferred1625.0%37.5%
A85Dutch with c4 & Nc357033.3%56.0%
A86Dutch with c4 & g320927.3%62.4%
A86Dutch, Hort-Antoshin system40.0%75.0%
A86Dutch, Leningrad variation20532.2%60.0%
A87Dutch, Leningrad, main variation80928.3%59.5%
A88Dutch, Leningrad, main variation with c6219131.3%56.9%
A89Dutch, Leningrad, main variation with Nc6140628.7%57.9%
A90Dutch defence205826.0%56.0%
A90Dutch defence, Dutch-Indian (Nimzo-Dutch) variation49028.4%60.7%
A90Dutch-Indian, Alekhine variation11230.4%49.1%
A91Dutch defence20432.8%52.7%
A92Dutch defence11632.8%59.5%
A92Dutch defence, Alekhine variation12130.6%58.3%
A92Dutch, stonewall variation34827.0%58.3%
A92Dutch, stonewall with Nc38527.1%60.6%
A93Dutch, stonewall, Botwinnik variation26428.8%60.2%
A94Dutch, stonewall with Ba318236.3%53.3%
A95Dutch, stonewall with Nc347226.5%54.3%
A95Dutch, stonewall: Chekhover variation5036.0%56.0%
A96Dutch, classical variation55431.2%61.6%
A97Dutch, Ilyin-Genevsky variation4630.4%63.0%
A97Dutch, Ilyin-Genevsky, Winter variation18535.7%64.3%
A98Dutch, Ilyin-Genevsky variation with Qc217226.7%60.5%
A99Dutch, Ilyin-Genevsky variation with b349724.9%59.2%
B00Barnes defence1816.7%63.9%
B00Carr's defence6524.6%53.8%
B00Corn stalk defence1136.4%81.8%
B00Fred80.0%87.5%
B00Guatemala defence10.0%100.0%
B00KP, Colorado counter1631.3%59.4%
B00KP, Nimzovich defence263824.1%57.6%
B00KP, Nimzovich defence, Bogolyubov variation27417.5%55.5%
B00KP, Nimzovich defence, Marshall gambit616.7%41.7%
B00King's pawn opening295926.0%53.7%
B00Owen defence87226.4%56.4%
B00Reversed Grob (Borg/Basman defence/macho Grob)16917.2%51.8%
B00St. George (Baker) defence18721.9%53.7%
B01Scandinavian (centre counter) defence501727.5%59.9%
B01Scandinavian defence159530.3%57.9%
B01Scandinavian defence, Gruenfeld variation1435.7%53.6%
B01Scandinavian defence, Lasker variation15027.3%64.3%
B01Scandinavian gambit19531.3%46.4%
B01Scandinavian, Anderssen counter-attack250.0%75.0%
B01Scandinavian, Anderssen counter-attack, Goteborg system50.0%100.0%
B01Scandinavian, Icelandic gambit7530.7%50.0%
B01Scandinavian, Kiel variation520.0%90.0%
B01Scandinavian, Marshall variation92628.1%60.5%
B01Scandinavian, Mieses-Kotrvc gambit267.7%50.0%
B01Scandinavian, Pytel-Wade variation291833.9%59.7%
B01Scandinavian, Richter variation1822.2%72.2%
B02Alekhine's defence58632.3%55.2%
B02Alekhine's defence, Brooklyn defence8721.8%61.5%
B02Alekhine's defence, Kmoch variation60.0%50.0%
B02Alekhine's defence, Krejcik variation1827.8%36.1%
B02Alekhine's defence, Maroczy variation27023.0%47.4%
B02Alekhine's defence, Mokele Mbembe (Buecker) variation2722.2%63.0%
B02Alekhine's defence, Saemisch attack25522.7%58.8%
B02Alekhine's defence, Scandinavian variation39128.4%55.9%
B02Alekhine's defence, Spielmann variation1631.3%59.4%
B02Alekhine's defence, Steiner variation825.0%37.5%
B02Alekhine's defence, Two pawns' (Lasker's) attack14841.2%47.6%
B02Alekhine's defence, Welling variation2927.6%44.8%
B03Alekhine's defence78123.8%53.8%
B03Alekhine's defence, Balogh variation4320.9%59.3%
B03Alekhine's defence, O'Sullivan gambit166.3%59.4%
B03Alekhine's defence, exchange variation80631.4%58.4%
B03Alekhine's defence, exchange, Karpov variation540.0%40.0%
B03Alekhine's defence, four pawns attack9931.3%59.1%
B03Alekhine's defence, four pawns attack, 6...Nc65922.0%50.0%
B03Alekhine's defence, four pawns attack, 7.Be317328.9%63.0%
B03Alekhine's defence, four pawns attack, Ilyin-Genevsky var.20.0%50.0%
B03Alekhine's defence, four pawns attack, Planinc variation425.0%87.5%
B03Alekhine's defence, four pawns attack, Tartakower variation250.0%75.0%
B03Alekhine's defence, four pawns attack, Trifunovic variation7022.9%67.1%
B03Alekhine's defence, four pawns attack, fianchetto variation5135.3%64.7%
B04Alekhine's defence, modern variation40722.6%61.4%
B04Alekhine's defence, modern, Keres variation17533.7%62.6%
B04Alekhine's defence, modern, Larsen variation132132.6%57.0%
B04Alekhine's defence, modern, Schmid variation13729.9%66.1%
B04Alekhine's defence, modern, fianchetto variation91031.0%55.1%
B05Alekhine's defence, modern variation, 4...Bg492929.1%64.4%
B05Alekhine's defence, modern, Alekhine variation650.0%58.3%
B05Alekhine's defence, modern, Flohr variation39429.9%65.0%
B05Alekhine's defence, modern, Panov variation1936.8%65.8%
B05Alekhine's defence, modern, Vitolins attack850.0%25.0%
B06Norwegian defence250.0%75.0%
B06Robatsch (modern) defence1004729.5%56.3%
B06Robatsch defence127928.2%59.0%
B06Robatsch defence, Gurgenidze variation78524.3%63.9%
B06Robatsch defence, Pseudo-Austrian attack96025.5%59.2%
B06Robatsch defence, Two knights variation59329.8%57.9%
B06Robatsch defence, Two knights, Suttles variation246934.4%58.3%
B06Robatsch defence, three pawns attack9916.2%54.5%
B07Pirc defence283326.1%54.8%
B07Pirc, 150 attack59429.6%53.0%
B07Pirc, Byrne variation44624.7%55.6%
B07Pirc, Chinese variation20.0%50.0%
B07Pirc, Holmov system4729.8%53.2%
B07Pirc, Sveshnikov system105027.3%52.1%
B07Pirc, Ufimtsev-Pytel variation85124.1%55.8%
B07Pirc, bayonet (Mariotti) attack4918.4%52.0%
B07Robatsch defence, Geller's system156329.9%57.0%
B08Pirc, classical (two knights) system94428.6%56.4%
B08Pirc, classical system, 5.Be2496831.4%58.4%
B08Pirc, classical, h3 system68730.0%56.0%
B09Pirc, Austrian attack76827.9%58.2%
B09Pirc, Austrian attack, 6.Bd3408230.8%57.9%
B09Pirc, Austrian attack, 6.Be376525.6%55.3%
B09Pirc, Austrian attack, 6.e531228.8%59.3%
B09Pirc, Austrian attack, Ljubojevic variation1526.7%73.3%
B09Pirc, Austrian attack, dragon formation118231.5%53.6%
B10Caro-Kann defence563225.0%53.7%
B10Caro-Kann, Goldman (Spielmann) variation11123.4%48.6%
B10Caro-Kann, Hillbilly attack3735.1%58.1%
B10Caro-Kann, Two knights variation89227.4%55.9%
B10Caro-Kann, anti-Caro-Kann defence131626.3%56.7%
B10Caro-Kann, anti-anti-Caro-Kann defence223434.2%51.8%
B10Caro-Kann, closed (Breyer) variation177924.6%50.4%
B11Caro-Kann, Two knights, 3...Bg4155125.3%53.3%
B12Caro-Kann defence190022.2%57.1%
B12Caro-Kann, 3.Nd248426.4%59.5%
B12Caro-Kann, Edinburgh variation5117.6%73.5%
B12Caro-Kann, Tartakower (fantasy) variation100427.4%55.1%
B12Caro-Kann, advance variation2197224.8%54.0%
B12Caro-Kann, advance, Short variation9319.4%67.7%
B12Caro-Masi defence1414.3%50.0%
B12de Bruycker defence2330.4%50.0%
B13Caro-Kann, Panov-Botvinnik attack186332.5%53.5%
B13Caro-Kann, Panov-Botvinnik, Czerniak variation4045.0%60.0%
B13Caro-Kann, Panov-Botvinnik, Gunderam attack933.3%38.9%
B13Caro-Kann, Panov-Botvinnik, Herzog defence2123.8%54.8%
B13Caro-Kann, Panov-Botvinnik, Reifir (Spielmann) variation425.0%87.5%
B13Caro-Kann, Panov-Botvinnik, normal variation25536.1%48.6%
B13Caro-Kann, exchange variation109327.3%50.4%
B13Caro-Kann, exchange, Rubinstein variation21533.5%55.8%
B14Caro-Kann, Panov-Botvinnik attack, 5...e6587733.4%54.9%
B14Caro-Kann, Panov-Botvinnik attack, 5...g646738.8%54.1%
B15Caro-Kann defence60825.3%49.7%
B15Caro-Kann, Alekhine gambit3050.0%55.0%
B15Caro-Kann, Forgacs variation11436.0%55.7%
B15Caro-Kann, Gurgenidze counter-attack3116.1%59.7%
B15Caro-Kann, Gurgenidze system53328.7%57.5%
B15Caro-Kann, Rasa-Studier gambit1330.8%38.5%
B15Caro-Kann, Tartakower (Nimzovich) variation125832.2%53.1%
B16Caro-Kann, Bronstein-Larsen variation74224.5%61.2%
B17Caro-Kann, Steinitz variation539929.1%53.8%
B18Caro-Kann, classical variation203130.5%55.0%
B18Caro-Kann, classical, 6.h4236730.9%53.4%
B18Caro-Kann, classical, Flohr variation9237.0%57.6%
B18Caro-Kann, classical, Maroczy attack742.9%64.3%
B19Caro-Kann, classical, 7...Nd791924.8%51.9%
B19Caro-Kann, classical, Spassky variation864527.7%57.4%
B20Sicilian defence615524.2%48.6%
B20Sicilian, Gloria variation922.2%55.6%
B20Sicilian, Keres variation (2.Ne2)115525.8%53.2%
B20Sicilian, Steinitz variation124025.4%54.0%
B20Sicilian, wing gambit8023.8%45.6%
B20Sicilian, wing gambit, Carlsbad variation2416.7%58.3%
B20Sicilian, wing gambit, Marshall variation40027.5%40.8%
B20Sicilian, wing gambit, Santasiere variation250.0%75.0%
B21Sicilian, Andreaschek gambit1844.4%61.1%
B21Sicilian, Grand Prix attack222525.8%49.6%
B21Sicilian, Smith-Morra gambit104628.3%49.9%
B22Sicilian, 2.c3, Heidenfeld variation4727.7%45.7%
B22Sicilian, Alapin's variation (2.c3)1727531.9%54.0%
B23Sicilian, Grand Prix attack58326.2%52.7%
B23Sicilian, Grand Prix attack, Schofman variation1827.8%30.6%
B23Sicilian, chameleon variation122328.0%55.1%
B23Sicilian, closed588326.9%52.9%
B23Sicilian, closed, 2...Nc6347127.7%53.2%
B23Sicilian, closed, Korchnoi variation36233.1%48.1%
B24Sicilian, closed61528.0%48.9%
B24Sicilian, closed, Smyslov variation1241.7%70.8%
B25Sicilian, closed25930.5%50.0%
B25Sicilian, closed, 6.Ne2 e5 (Botvinnik)9515.8%53.2%
B25Sicilian, closed, 6.f486129.2%50.1%
B25Sicilian, closed, 6.f4 e5 (Botvinnik)9625.0%47.9%
B26Sicilian, closed, 6.Be355225.9%48.3%
B27Sicilian defence11230.4%59.8%
B27Sicilian, Acton extension1323.1%57.7%
B27Sicilian, Hungarian variation1036833.7%57.2%
B27Sicilian, Katalimov variation17624.4%54.8%
B27Sicilian, Quinteros variation9818.4%59.2%
B27Sicilian, Stiletto (Althouse) variation1414.3%71.4%
B28Sicilian, O'Kelly variation84428.6%56.9%
B29Sicilian, Nimzovich-Rubinstein variation54729.6%56.3%
B29Sicilian, Nimzovich-Rubinstein; Rubinstein counter-gambit7037.1%55.7%
B30Sicilian defence432829.1%52.2%
B30Sicilian, Nimzovich-Rossolimo attack (without ...d6)675929.1%54.7%
B31Sicilian, Nimzovich-Rossolimo attack (with ...g6, without ...d6)409130.0%55.7%
B31Sicilian, Nimzovich-Rossolimo attack, Gurgenidze variation1533.3%50.0%
B32Sicilian defence108228.5%51.8%
B32Sicilian, Flohr variation14628.1%56.5%
B32Sicilian, Labourdonnais-Loewenthal (Kalashnikov) variation174429.5%54.1%
B32Sicilian, Labourdonnais-Loewenthal variation34227.5%54.4%
B32Sicilian, Nimzovich variation2814.3%53.6%
B33Sicilian defence101329.2%52.7%
B33Sicilian, Pelikan (Lasker/Sveshnikov) variation117523.7%53.6%
B33Sicilian, Pelikan, Bird variation29926.4%59.4%
B33Sicilian, Pelikan, Chelyabinsk variation576526.9%55.3%
B33Sicilian, Sveshnikov variation314726.5%52.8%
B34Sicilian, accelerated fianchetto, exchange variation2733.3%42.6%
B34Sicilian, accelerated fianchetto, modern variation121732.0%51.4%
B35Sicilian, accelerated fianchetto, modern variation with Bc4466534.3%53.6%
B36Sicilian, accelerated fianchetto, Gurgenidze variation36638.5%53.7%
B36Sicilian, accelerated fianchetto, Maroczy bind143235.6%55.9%
B37Sicilian, accelerated fianchetto, Maroczy bind, 5...Bg732934.7%52.6%
B37Sicilian, accelerated fianchetto, Simagin variation1030.0%45.0%
B38Sicilian, accelerated fianchetto, Maroczy bind, 6.Be3293238.8%57.2%
B39Sicilian, accelerated fianchetto, Breyer variation150633.0%61.0%
B40Sicilian defence877528.9%52.5%
B40Sicilian, Anderssen variation226831.7%55.5%
B40Sicilian, Marshall variation2416.7%41.7%
B40Sicilian, Pin variation (Sicilian counter-attack)12018.3%55.0%
B40Sicilian, Pin, Jaffe variation50.0%80.0%
B40Sicilian, Pin, Koch variation14526.2%69.7%
B41Sicilian, Kan variation27629.0%54.7%
B41Sicilian, Kan, Maroczy bind (Reti variation)85128.8%54.5%
B41Sicilian, Kan, Maroczy bind - Bronstein variation5928.8%56.8%
B42Sicilian, Kan, 5.Bd3444129.0%56.9%
B42Sicilian, Kan, Gipslis variation19329.0%57.0%
B42Sicilian, Kan, Polugaievsky variation289626.9%54.3%
B42Sicilian, Kan, Swiss cheese variation29927.8%56.7%
B43Sicilian, Kan, 5.Nc3621728.9%55.0%
B44Sicilian defence43229.4%52.9%
B44Sicilian, Szen (`anti-Taimanov') variation97731.4%51.4%
B44Sicilian, Szen variation, Dely-Kasparov gambit2441.7%54.2%
B44Sicilian, Szen, hedgehog variation41730.5%48.3%
B45Sicilian, Taimanov variation464227.3%54.4%
B45Sicilian, Taimanov, American attack1952.6%42.1%
B46Sicilian, Taimanov variation566328.7%54.7%
B47Sicilian, Taimanov (Bastrikov) variation1107630.8%54.4%
B48Sicilian, Taimanov variation709328.0%54.1%
B49Sicilian, Taimanov variation235531.5%55.4%
B50Sicilian526227.8%52.7%
B50Sicilian, wing gambit deferred3619.4%45.8%
B51Sicilian, Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack274430.1%55.2%
B52Sicilian, Canal-Sokolsky attack, 3...Bd7154234.8%50.1%
B52Sicilian, Canal-Sokolsky attack, Bronstein gambit16627.1%43.1%
B52Sicilian, Canal-Sokolsky attack, Sokolsky variation120533.2%54.3%
B53Sicilian, Chekhover variation99437.0%50.4%
B53Sicilian, Chekhover, Zaitsev variation4719.1%54.3%
B54Sicilian108926.8%54.4%
B54Sicilian, Prins (Moscow) variation46630.9%52.6%
B55Sicilian, Prins variation, Venice attack12137.2%56.6%
B56Sicilian522326.3%54.4%
B56Sicilian, Venice attack65334.2%63.0%
B57Sicilian, Magnus Smith trap4228.6%54.8%
B57Sicilian, Sozin, Benko variation516429.4%51.0%
B57Sicilian, Sozin, not Scheveningen56330.2%54.9%
B58Sicilian, Boleslavsky variation88533.2%48.9%
B58Sicilian, Boleslavsky, Louma variation4231.0%60.7%
B58Sicilian, classical74835.3%51.7%
B59Sicilian, Boleslavsky variation, 7.Nb315839.2%53.8%
B60Sicilian, Richter-Rauzer142226.0%57.0%
B60Sicilian, Richter-Rauzer, Bondarevsky variation2433.3%54.2%
B60Sicilian, Richter-Rauzer, Larsen variation35424.9%54.8%
B61Sicilian, Richter-Rauzer, Larsen variation, 7.Qd259827.9%60.3%
B62Sicilian, Richter-Rauzer, 6...e618426.1%48.4%
B62Sicilian, Richter-Rauzer, Keres variation55730.7%53.8%
B62Sicilian, Richter-Rauzer, Margate (Alekhine) variation53033.0%50.1%
B62Sicilian, Richter-Rauzer, Podvebrady variation3426.5%51.5%
B62Sicilian, Richter-Rauzer, Richter attack10.0%0.0%
B63Sicilian, Richter-Rauzer, Rauzer attack47626.7%55.8%
B63Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7212427.8%52.2%
B64Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9.f462332.7%54.4%
B64Sicilian, Richter-Rauzer, Rauzer attack, Geller variation214.8%73.8%
B65Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9...Nxd4153830.8%56.8%
B66Sicilian, Richter-Rauzer, Rauzer attack, 7...a61501724.9%51.2%
B67Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 8...Bd7719525.1%52.5%
B68Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 9...Be724228.1%56.2%
B69Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 11.Bxf644823.9%57.3%
B70Sicilian, dragon variation78529.7%50.1%
B71Sicilian, dragon, Levenfish variation8333.7%45.8%
B71Sicilian, dragon, Levenfish; Flohr variation616.7%58.3%
B72Sicilian, dragon, 6.Be326128.0%50.0%
B72Sicilian, dragon, classical attack10530.5%56.2%
B72Sicilian, dragon, classical, Amsterdam variation6338.1%44.4%
B72Sicilian, dragon, classical, Grigoriev variation1145.5%68.2%
B72Sicilian, dragon, classical, Nottingham variation8528.2%44.7%
B73Sicilian, dragon, classical, 8.O-O23437.6%55.6%
B73Sicilian, dragon, classical, Richter variation20536.6%48.5%
B73Sicilian, dragon, classical, Zollner gambit1735.3%23.5%
B74Sicilian, dragon, classical, 9.Nb324435.2%49.6%
B74Sicilian, dragon, classical, Alekhine variation3522.9%62.9%
B74Sicilian, dragon, classical, Reti-Tartakower variation20334.5%52.2%
B74Sicilian, dragon, classical, Spielmann variation6628.8%53.8%
B75Sicilian, dragon, Yugoslav attack40229.1%52.1%
B76Sicilian, dragon, Yugoslav attack, 7...O-O62129.8%51.4%
B76Sicilian, dragon, Yugoslav attack, Rauser variation137526.5%59.3%
B77Sicilian, dragon, Yugoslav attack, 9...Bd746525.6%55.2%
B77Sicilian, dragon, Yugoslav attack, 9.Bc49630.2%53.6%
B77Sicilian, dragon, Yugoslav attack, Byrne variation50.0%80.0%
B78Sicilian, dragon, Yugoslav attack, 10.O-O-O108024.1%54.4%
B79Sicilian, dragon, Yugoslav attack, 12.h414531.0%64.5%
B80Sicilian, Scheveningen variation143123.8%53.8%
B80Sicilian, Scheveningen, English variation59824.7%50.5%
B80Sicilian, Scheveningen, Vitolins variation11019.1%44.1%
B80Sicilian, Scheveningen, fianchetto variation53128.2%51.6%
B81Sicilian, Scheveningen, Keres attack473825.9%59.0%
B82Sicilian, Scheveningen, 6.f479729.7%55.8%
B82Sicilian, Scheveningen, Tal variation19318.1%60.4%
B83Sicilian, Scheveningen, 6.Be282431.1%51.1%
B83Sicilian, modern Scheveningen85130.4%50.0%
B83Sicilian, modern Scheveningen, main line70835.7%52.6%
B83Sicilian, modern Scheveningen, main line with Nb316123.0%50.0%
B84Sicilian, Scheveningen (Paulsen), classical variation927929.0%51.8%
B84Sicilian, Scheveningen, classical, Nd7 system8725.3%52.9%
B85Sicilian, Scheveningen, classical24839.1%53.0%
B85Sicilian, Scheveningen, classical main line70940.1%54.2%
B85Sicilian, Scheveningen, classical variation with ...Qc7 and ...Nc62321.7%50.0%
B85Sicilian, Scheveningen, classical, Maroczy system6633.3%54.5%
B86Sicilian, Sozin attack24426.6%45.3%
B87Sicilian, Sozin with ...a6 and ...b5137727.7%48.4%
B88Sicilian, Sozin, Fischer variation4250.0%51.2%
B88Sicilian, Sozin, Leonhardt variation68832.7%49.1%
B89Sicilian, Sozin, 7.Be3428826.9%49.0%
B89Sicilian, Velimirovic attack171024.4%50.8%
B90Sicilian, Najdorf1228024.8%51.1%
B90Sicilian, Najdorf, Adams attack268223.8%52.8%
B90Sicilian, Najdorf, Byrne (English) attack4938024.8%51.5%
B90Sicilian, Najdorf, Lipnitzky attack229628.9%48.6%
B91Sicilian, Najdorf, Zagreb (fianchetto) variation140527.2%51.1%
B92Sicilian, Najdorf, Opovcensky variation1123429.8%52.5%
B93Sicilian, Najdorf, 6.f4251229.3%49.5%
B94Sicilian, Najdorf, 6.Bg5165325.3%53.1%
B95Sicilian, Najdorf, 6...e6147627.2%53.4%
B96Sicilian, Najdorf, 7.f4197623.5%49.1%
B96Sicilian, Najdorf, Polugayevsky variation13324.8%52.3%
B96Sicilian, Najdorf, Polugayevsky, Simagin variation4520.0%52.2%
B97Sicilian, Najdorf, 7...Qb6253823.6%46.7%
B97Sicilian, Najdorf, Poisoned pawn variation339927.4%44.3%
B98Sicilian, Najdorf variation21324.9%49.5%
B98Sicilian, Najdorf, 7...Be727125.1%53.1%
B98Sicilian, Najdorf, Browne variation9632.3%57.8%
B98Sicilian, Najdorf, Goteborg (Argentine) variation1435.7%46.4%
B99Sicilian, Najdorf, 7...Be7 main line160322.0%54.5%
C00French defence385624.0%54.5%
C00French defence, Steiner variation112128.0%49.8%
C00French, Alapin variation4515.6%45.6%
C00French, Chigorin variation317724.6%50.7%
C00French, King's Indian attack740228.6%50.9%
C00French, Labourdonnais variation63925.5%49.1%
C00French, Pelikan variation8626.7%49.4%
C00French, Reti (Spielmann) variation29027.2%55.0%
C00French, Reversed Philidor formation8229.3%40.2%
C00French, Schlechter variation47031.7%50.5%
C00French, Steinitz attack5036.0%52.0%
C00French, Two knights variation86524.4%49.8%
C00French, Wing gambit4812.5%41.7%
C00Lengfellner system10827.8%61.1%
C00St. George defence64626.6%55.1%
C01French, exchange variation225632.5%53.3%
C01French, exchange, Bogolyubov variation922.2%33.3%
C01French, exchange, Svenonius variation6735.8%56.7%
C02French, advance variation206325.2%53.8%
C02French, advance, Euwe variation321225.1%52.1%
C02French, advance, Milner-Barry gambit12925.6%53.1%
C02French, advance, Nimzovich system32719.3%46.6%
C02French, advance, Nimzovich variation5125.5%28.4%
C02French, advance, Paulsen attack219424.4%53.5%
C02French, advance, Steinitz variation69828.1%50.0%
C02French, advance, Wade variation39227.6%54.8%
C03French, Tarrasch288529.9%56.2%
C03French, Tarrasch, Guimard variation23122.9%61.3%
C03French, Tarrasch, Haberditz variation1513.3%66.7%
C04French, Tarrasch, Guimard main line45125.9%56.2%
C05French, Tarrasch, Botvinnik variation14924.2%57.0%
C05French, Tarrasch, closed variation194424.4%56.8%
C06French, Tarrasch, Leningrad variation5117.6%53.9%
C06French, Tarrasch, closed variation, main line273232.2%55.3%
C07French, Tarrasch, Eliskases variation9637.5%51.0%
C07French, Tarrasch, open variation638332.5%52.8%
C08French, Tarrasch, open, 4.ed ed331536.7%52.9%
C09French, Tarrasch, open variation, main line220437.2%55.9%
C10French, Fort Knox variation46934.3%54.3%
C10French, Frere (Becker) variation4723.4%54.3%
C10French, Marshall variation1435.7%67.9%
C10French, Paulsen variation156827.3%56.5%
C10French, Rubinstein variation785932.9%53.5%
C10French, Rubinstein, Capablanca line2035.0%52.5%
C11French defence62525.9%49.3%
C11French, Burn variation933430.9%52.0%
C11French, Henneberger variation3138.7%32.3%
C11French, Steinitz variation181526.9%53.9%
C11French, Steinitz, Boleslavsky variation699026.4%54.5%
C11French, Steinitz, Bradford attack30.0%33.3%
C11French, Steinitz, Gledhill attack5339.6%53.8%
C11French, Swiss variation13730.7%43.8%
C12French, MacCutcheon variation30330.4%51.5%
C12French, MacCutcheon, Bernstein variation219.5%57.1%
C12French, MacCutcheon, Bogolyubov variation616.7%75.0%
C12French, MacCutcheon, Chigorin variation5135.3%51.0%
C12French, MacCutcheon, Dr. Olland (Dutch) variation3633.3%55.6%
C12French, MacCutcheon, Duras variation366.7%66.7%
C12French, MacCutcheon, Grigoriev variation955.6%50.0%
C12French, MacCutcheon, Janowski variation17724.3%59.6%
C12French, MacCutcheon, Lasker variation46419.6%52.0%
C12French, MacCutcheon, Lasker variation, 8...g675424.7%54.8%
C12French, MacCutcheon, Tartakower variation450.0%50.0%
C12French, MacCutcheon, advance variation1241.7%54.2%
C13French, Albin-Alekhine-Chatard attack40621.9%57.3%
C13French, Albin-Alekhine-Chatard attack, Breyer variation9228.3%55.4%
C13French, Albin-Alekhine-Chatard attack, Maroczy variation728.6%28.6%
C13French, Albin-Alekhine-Chatard attack, Spielmann variation6028.3%57.5%
C13French, Albin-Alekhine-Chatard attack, Teichmann variation922.2%88.9%
C13French, classical2512.0%54.0%
C13French, classical, Anderssen variation4621.7%39.1%
C13French, classical, Anderssen-Richter variation1315.4%30.8%
C13French, classical, Frankfurt variation1618.8%84.4%
C13French, classical, Tartakower variation2626.9%55.8%
C13French, classical, Vistaneckis (Nimzovich) variation40.0%75.0%
C14French, classical variation2313.0%23.9%
C14French, classical, Alapin variation9238.0%58.2%
C14French, classical, Pollock variation147.1%39.3%
C14French, classical, Rubinstein variation4719.1%54.3%
C14French, classical, Stahlberg variation450.0%75.0%
C14French, classical, Steinitz variation94726.3%57.3%
C14French, classical, Tarrasch variation850.0%62.5%
C15French, Winawer (Nimzovich) variation133632.0%53.1%
C15French, Winawer, Alekhine (Maroczy) gambit38830.9%57.0%
C15French, Winawer, Alekhine gambit70.0%71.4%
C15French, Winawer, Alekhine gambit, Alatortsev variation1100.0%50.0%
C15French, Winawer, Alekhine gambit, Kan variation20034.0%49.0%
C15French, Winawer, Kondratiyev variation1241.7%62.5%
C15French, Winawer, fingerslip variation3721.6%59.5%
C16French, Winawer, Petrosian variation38623.8%54.7%
C16French, Winawer, advance variation113224.6%56.6%
C17French, Winawer, advance variation9725.8%60.3%
C17French, Winawer, advance, 5.a376225.2%57.2%
C17French, Winawer, advance, Bogolyubov variation30528.2%56.4%
C17French, Winawer, advance, Rauzer variation757.1%42.9%
C17French, Winawer, advance, Russian variation6726.9%49.3%
C18French, Winawer, advance variation76720.2%57.4%
C18French, Winawer, classical variation80021.3%56.3%
C19French, Winawer, advance, 6...Ne780525.8%59.5%
C19French, Winawer, advance, Smyslov variation26325.5%58.7%
C19French, Winawer, advance, poisoned pawn variation511524.3%58.8%
C19French, Winawer, advance, poisoned pawn, Euwe-Gligoric variation1450.0%53.6%
C19French, Winawer, advance, poisoned pawn, Konstantinopolsky variation125525.7%60.2%
C19French, Winawer, advance, positional main line285123.4%57.6%
C20Alapin's opening11023.6%48.2%
C20KP, Indian opening24626.8%50.4%
C20KP, King's head opening1631.3%59.4%
C20KP, Lopez opening6235.5%45.2%
C20KP, Mengarini's opening7817.9%56.4%
C20KP, Napoleon's opening1540.0%53.3%
C20KP, Patzer opening2931.0%56.9%
C20King's pawn game29120.3%52.1%
C21Centre game28732.8%57.1%
C21Danish gambit6026.7%55.0%
C21Danish gambit, Collijn defence30.0%33.3%
C21Danish gambit, Soerensen defence3429.4%52.9%
C21Halasz gambit4528.9%41.1%
C22Centre game2227.3%59.1%
C22Centre game, Berger variation39825.9%53.6%
C22Centre game, Charousek variation714.3%50.0%
C22Centre game, Hall variation1127.3%50.0%
C22Centre game, Paulsen attack9832.7%51.0%
C23Bishop's opening39024.1%52.8%
C23Bishop's opening, Calabrese counter-gambit250.0%25.0%
C23Bishop's opening, Calabrese counter-gambit, Jaenisch variation1711.8%64.7%
C23Bishop's opening, Classical variation11417.5%50.9%
C23Bishop's opening, Lewis counter-gambit633.3%50.0%
C23Bishop's opening, Lewis gambit540.0%40.0%
C23Bishop's opening, Philidor counter-attack10634.9%59.0%
C23Bishop's opening, Philidor variation1926.3%55.3%
C24Bishop's opening, Berlin defence141127.7%52.3%
C24Bishop's opening, Ponziani gambit2128.6%38.1%
C24Bishop's opening, Urusov gambit2927.6%41.4%
C24Bishop's opening, Urusov gambit, Panov variation616.7%58.3%
C25Vienna gambit7327.4%53.4%
C25Vienna game75425.5%52.3%
C25Vienna game, Max Lange defence6923.2%44.9%
C25Vienna, Hamppe-Allgaier gambit425.0%37.5%
C25Vienna, Paulsen variation61622.9%50.7%
C25Vienna, Pierce gambit1816.7%36.1%
C25Vienna, Steinitz gambit540.0%60.0%
C25Vienna, Steinitz gambit, Fraser-Minckwitz variation714.3%50.0%
C25Vienna, Steinitz gambit, Zukertort defence1100.0%50.0%
C26Vienna game35427.1%53.7%
C26Vienna, Falkbeer variation14117.0%51.1%
C26Vienna, Mengarini variation3735.1%58.1%
C26Vienna, Paulsen-Mieses variation102830.7%51.1%
C27Boden-Kieseritsky gambit5813.8%50.0%
C27Boden-Kieseritsky gambit, Lichtenhein defence633.3%33.3%
C27Vienna game27526.5%49.3%
C27Vienna, Alekhine variation9924.2%42.4%
C27Vienna, `Frankenstein-Dracula' variation4226.2%56.0%
C28Vienna game37629.8%51.3%
C29Vienna gambit23927.6%48.5%
C29Vienna gambit, Bardeleben variation1225.0%29.2%
C29Vienna gambit, Breyer variation13435.8%55.2%
C29Vienna gambit, Kaufmann variation1338.5%65.4%
C29Vienna gambit, Paulsen attack2626.9%51.9%
C29Vienna gambit, Steinitz variation3125.8%48.4%
C30KGD, 2...Nf66426.6%52.3%
C30KGD, Keene's defence4320.9%47.7%
C30KGD, Mafia defence14325.2%64.3%
C30KGD, Norwalde variation1428.6%50.0%
C30KGD, classical counter-gambit616.7%58.3%
C30KGD, classical variation22820.6%46.7%
C30KGD, classical, 4.c314225.4%62.7%
C30KGD, classical, Heath variation366.7%33.3%
C30KGD, classical, Marshall attack1127.3%50.0%
C30KGD, classical, Reti variation616.7%75.0%
C30KGD, classical, Soldatenkov variation1225.0%54.2%
C30KGD, classical, Svenonius variation520.0%50.0%
C30King's gambit18527.0%56.8%
C31KGD, Falkbeer counter-gambit6520.0%46.9%
C31KGD, Falkbeer, 3...e4540.0%60.0%
C31KGD, Falkbeer, 4.d31931.6%68.4%
C31KGD, Falkbeer, Morphy gambit742.9%64.3%
C31KGD, Falkbeer, Nimzovich variation70.0%42.9%
C31KGD, Falkbeer, Rubinstein variation450.0%50.0%
C31KGD, Falkbeer, Tartakower variation1833.3%77.8%
C31KGD, Nimzovich counter-gambit5225.0%45.2%
C32KGD, Falkbeer, 5.de3729.7%52.7%
C32KGD, Falkbeer, Charousek gambit20.0%100.0%
C32KGD, Falkbeer, Charousek variation10.0%0.0%
C32KGD, Falkbeer, Keres variation1100.0%50.0%
C32KGD, Falkbeer, Reti variation366.7%33.3%
C32KGD, Falkbeer, Tarrasch variation10.0%100.0%
C32KGD, Falkbeer, main line, 7...Bf5977.8%38.9%
C33KGA, Breyer gambit2040.0%30.0%
C33KGA, Carrera (Basman) gambit3531.4%41.4%
C33KGA, Keres (Mason-Steinitz) gambit439.3%44.2%
C33KGA, Lesser bishop's (Petroff-Jaenisch-Tartakower) gambit229.1%45.5%
C33KGA, Lopez-Gianutio counter-gambit, Hein variation250.0%75.0%
C33KGA, Villemson (Steinitz) gambit728.6%42.9%
C33KGA, bishop's gambit13416.4%52.2%
C33KGA, bishop's gambit, Anderssen variation616.7%75.0%
C33KGA, bishop's gambit, Bledow variation4833.3%41.7%
C33KGA, bishop's gambit, Boden defence714.3%35.7%
C33KGA, bishop's gambit, Bogolyubov variation3411.8%47.1%
C33KGA, bishop's gambit, Boren-Svenonius variation30.0%66.7%
C33KGA, bishop's gambit, Cozio (Morphy) defence3033.3%40.0%
C33KGA, bishop's gambit, Jaenisch variation10526.7%51.4%
C33KGA, bishop's gambit, Lopez-Gianutio counter-gambit3125.8%29.0%
C33KGA, bishop's gambit, Maurian defence2524.0%52.0%
C33KGA, bishop's gambit, McDonnell attack250.0%75.0%
C33KGA, bishop's gambit, Morphy variation4223.8%45.2%
C33KGA, bishop's gambit, Paulsen attack812.5%43.8%
C33KGA, bishop's gambit, Ruy Lopez defence757.1%42.9%
C33KGA, bishop's gambit, Steinitz defence7729.9%46.1%
C33KGA, bishop's gambit, classical defence119.1%22.7%
C33King's gambit accepted922.2%44.4%
C34KGA, Becker defence4520.0%41.1%
C34KGA, Bonsch-Osmolovsky variation4425.0%42.0%
C34KGA, Fischer defence22622.6%47.1%
C34KGA, Gianutio counter-gambit10.0%0.0%
C34KGA, Schallop defence10318.4%51.0%
C34King's knight's gambit7715.6%45.5%
C35KGA, Cunningham defence10322.3%46.1%
C35KGA, Cunningham, Bertin gambit20.0%50.0%
C35KGA, Cunningham, Euwe defence6830.9%50.7%
C36KGA, Abbazia defence (classical defence, modern defence[!])2718.5%53.7%
C36KGA, Abbazia defence, Botvinnik variation20.0%100.0%
C36KGA, Abbazia defence, modern variation20634.0%43.7%
C37KGA, Blachly gambit2416.7%29.2%
C37KGA, Ghulam Kassim gambit10.0%0.0%
C37KGA, King's knight's gambit10.0%0.0%
C37KGA, Lolli gambit (wild Muzio gambit)1100.0%50.0%
C37KGA, MacDonnell gambit250.0%75.0%
C37KGA, Muzio gambit119.1%13.6%
C37KGA, Quaade gambit137.7%11.5%
C37KGA, Rosentreter gambit333.3%83.3%
C37KGA, Salvio gambit1225.0%45.8%
C37KGA, Salvio gambit, Anderssen counter-attack30.0%33.3%
C37KGA, Silberschmidt gambit20.0%0.0%
C37KGA, double Muzio gambit10.0%0.0%
C38KGA, Hanstein gambit2119.0%38.1%
C38KGA, Philidor gambit40.0%25.0%
C38KGA, Philidor gambit, Schultz variation50.0%20.0%
C38King's knight's gambit911.1%50.0%
C39KGA, Allgaier gambit10.0%100.0%
C39KGA, Kieseritsky, Berlin defence5516.4%37.3%
C39KGA, Kieseritsky, Berlin defence, 6.Bc45630.4%45.5%
C39KGA, Kieseritsky, Brentano (Campbell) defence10.0%100.0%
C39KGA, Kieseritsky, Kolisch defence10534.3%50.5%
C39KGA, Kieseritsky, Neumann defence425.0%62.5%
C39KGA, Kieseritsky, Paulsen defence540.0%40.0%
C39KGA, Kieseritsky, Rice gambit2250.0%25.0%
C39KGA, Kieseritsky, Salvio (Rosenthal) defence1861.1%58.3%
C39King's knight's gambit20.0%50.0%
C40Damiano's defence2927.6%55.2%
C40Greco defence9017.8%64.4%
C40Gunderam defence24122.8%63.7%
C40King's knight opening616.7%41.7%
C40Latvian counter-gambit15125.2%60.9%
C40Latvian gambit, 3.Bc4633.3%66.7%
C40Latvian, Fraser defence128.3%62.5%
C40Latvian, Polerio variation60.0%33.3%
C40QP counter-gambit (elephant gambit)18817.0%63.8%
C40QP counter-gambit, Maroczy gambit7024.3%62.1%
C41Philidor's defence56029.5%56.5%
C41Philidor, Boden variation1910.5%52.6%
C41Philidor, Hanham variation8337.3%60.8%
C41Philidor, Hanham, Delmar variation850.0%75.0%
C41Philidor, Hanham, Kmoch variation20.0%50.0%
C41Philidor, Hanham, Krause variation3030.0%68.3%
C41Philidor, Hanham, Schlechter variation6726.9%62.7%
C41Philidor, Hanham, Steiner variation3330.3%66.7%
C41Philidor, Improved Hanham variation128927.2%56.6%
C41Philidor, Larsen variation7724.7%68.2%
C41Philidor, Lopez counter-gambit1513.3%80.0%
C41Philidor, Nimzovich (Jaenisch) variation9032.2%48.3%
C41Philidor, Nimzovich variation3138.7%54.8%
C41Philidor, Nimzovich, Klein variation128.3%62.5%
C41Philidor, Nimzovich, Larobok variation5141.2%34.3%
C41Philidor, Nimzovich, Rellstab variation9832.7%64.3%
C41Philidor, Nimzovich, Sokolsky variation520.0%50.0%
C41Philidor, Nimzovich, Sozin variation4517.8%48.9%
C41Philidor, Paulsen attack30.0%100.0%
C41Philidor, Philidor counter-gambit3016.7%51.7%
C41Philidor, Philidor counter-gambit, Zukertort variation1833.3%55.6%
C41Philidor, Philidor counter-gambit, del Rio attack540.0%60.0%
C41Philidor, Steinitz variation1421.4%53.6%
C41Philidor, exchange variation131026.0%58.1%
C42Petrov three knights game52928.5%53.8%
C42Petrov's defence93624.8%53.8%
C42Petrov, Cochrane gambit4314.0%46.5%
C42Petrov, Cozio (Lasker) attack28632.2%51.4%
C42Petrov, Damiano variation3930.8%53.8%
C42Petrov, French attack1513.3%66.7%
C42Petrov, Italian variation15519.4%51.0%
C42Petrov, Kaufmann attack30132.6%57.1%
C42Petrov, Nimzovich attack72433.4%54.3%
C42Petrov, Paulsen attack26527.5%45.5%
C42Petrov, classical attack203830.8%57.0%
C42Petrov, classical attack, Berger variation1936.8%55.3%
C42Petrov, classical attack, Chigorin variation106334.1%54.4%
C42Petrov, classical attack, Jaenisch variation354335.2%56.3%
C42Petrov, classical attack, Krause variation1100.0%50.0%
C42Petrov, classical attack, Marshall variation243129.4%55.2%
C42Petrov, classical attack, Mason variation9538.9%63.7%
C42Petrov, classical attack, Tarrasch variation933.3%83.3%
C42Petrov, classical attack, close variation20730.0%55.1%
C43Petrov, Urusov gambit468.7%45.7%
C43Petrov, modern (Steinitz) attack15324.8%60.8%
C43Petrov, modern attack, Bardeleben variation1717.6%67.6%
C43Petrov, modern attack, Steinitz variation1127.3%59.1%
C43Petrov, modern attack, Symmetrical variation464131.3%53.9%
C43Petrov, modern attack, Trifunovic variation8534.1%51.2%
C43Petrov, modern attack, main line48631.7%58.6%
C44Dresden opening5820.7%46.6%
C44Inverted Hanham4725.5%48.9%
C44Inverted Hungarian5328.3%50.0%
C44King's pawn game7126.8%47.2%
C44Konstantinopolsky opening2416.7%45.8%
C44Ponziani counter-gambit20020.5%52.3%
C44Ponziani counter-gambit, Cordel variation10.0%100.0%
C44Ponziani counter-gambit, Schmidt attack10.0%0.0%
C44Ponziani opening17425.9%53.7%
C44Ponziani, Caro variation11636.2%50.0%
C44Ponziani, Jaenisch counter-attack69232.2%46.5%
C44Ponziani, Leonhardt variation5837.9%50.0%
C44Ponziani, Reti variation166.3%53.1%
C44Ponziani, Romanishin variation1060.0%60.0%
C44Ponziani, Steinitz variation10740.2%52.8%
C44Scotch gambit10125.7%49.5%
C44Scotch gambit, Anderssen (Paulsen, Suhle) counter-attack1100.0%50.0%
C44Scotch gambit, Benima defence6028.3%52.5%
C44Scotch gambit, Dubois-Reti defence62631.3%49.5%
C44Scotch opening5625.0%41.1%
C44Scotch, Goering gambit18031.1%50.0%
C44Scotch, Goering gambit, Bardeleben variation1020.0%40.0%
C44Scotch, Lolli variation7718.2%53.2%
C44Scotch, Relfsson gambit ('MacLopez')4012.5%46.3%
C44Tayler opening728.6%28.6%
C45Scotch game357531.8%53.3%
C45Scotch, Blackburne attack2254.5%54.5%
C45Scotch, Blumenfeld attack1040.0%20.0%
C45Scotch, Ghulam Kassim variation560.0%70.0%
C45Scotch, Horwitz attack3336.4%54.5%
C45Scotch, Meitner variation4235.7%53.6%
C45Scotch, Mieses variation209633.3%51.1%
C45Scotch, Paulsen attack1533.3%30.0%
C45Scotch, Potter variation28234.8%47.9%
C45Scotch, Pulling counter-attack2917.2%56.9%
C45Scotch, Romanishin variation3228.1%45.3%
C45Scotch, Rosenthal variation10.0%0.0%
C45Scotch, Schmidt variation102140.0%50.4%
C45Scotch, Steinitz variation5521.8%45.5%
C45Scotch, Tartakower variation1637.5%56.3%
C46Four knights game92129.5%50.2%
C46Four knights, Gunsberg variation12029.2%42.9%
C46Four knights, Italian variation40329.0%48.3%
C46Four knights, Schultze-Mueller gambit2429.2%39.6%
C46Three knights game26725.1%52.6%
C46Three knights, Schlechter variation1338.5%65.4%
C46Three knights, Steinitz variation15518.7%53.2%
C46Three knights, Steinitz, Rosenthal variation1560.0%56.7%
C47Four knights, Belgrade gambit24926.5%43.0%
C47Four knights, Scotch variation4634.8%60.9%
C47Four knights, Scotch, 4...exd478736.3%50.8%
C47Four knights, Scotch, Krause variation19233.3%54.7%
C48Four knights, Bardeleben variation728.6%57.1%
C48Four knights, Marshall variation1118.2%63.6%
C48Four knights, Ranken variation2825.0%44.6%
C48Four knights, Rubinstein counter-gambit152126.4%53.9%
C48Four knights, Rubinstein counter-gambit, 5.Be21323.1%57.7%
C48Four knights, Rubinstein counter-gambit, Bogolyubov variation1631.3%53.1%
C48Four knights, Rubinstein counter-gambit, Henneberger variation4936.7%61.2%
C48Four knights, Rubinstein counter-gambit, exchange variation13342.1%48.9%
C48Four knights, Spanish variation33527.2%51.8%
C48Four knights, Spanish, classical defence16226.5%52.8%
C48Four knights, Spielmann variation633.3%50.0%
C49Four knights13235.6%50.4%
C49Four knights, Gunsberg counter-attack1100.0%50.0%
C49Four knights, Janowski variation2138.1%38.1%
C49Four knights, Nimzovich (Paulsen) variation7544.0%52.7%
C49Four knights, Svenonius variation30.0%66.7%
C49Four knights, double Ruy Lopez31541.9%56.5%
C49Four knights, symmetrical variation50732.0%49.9%
C49Four knights, symmetrical, Blake variation475.0%62.5%
C49Four knights, symmetrical, Capablanca variation3342.4%57.6%
C49Four knights, symmetrical, Maroczy system8939.3%52.2%
C49Four knights, symmetrical, Metger unpin49035.1%52.4%
C49Four knights, symmetrical, Pillsbury variation4725.5%42.6%
C49Four knights, symmetrical, Tarrasch variation540.0%60.0%
C50Giuoco Pianissimo194730.2%52.1%
C50Giuoco Pianissimo, Canal variation23730.0%51.3%
C50Giuoco Pianissimo, Italian four knights variation52729.0%55.5%
C50Giuoco Piano157729.7%50.8%
C50Giuoco Piano, four knights variation14027.9%51.8%
C50Hungarian defence12635.7%53.6%
C50King's pawn game38923.1%54.2%
C50Rousseau gambit50.0%60.0%
C51Evans gambit60.0%0.0%
C51Evans gambit declined2138.1%42.9%
C51Evans gambit declined, 5.a410529.5%47.1%
C51Evans gambit declined, Cordel variation1330.8%30.8%
C51Evans gambit declined, Showalter variation1838.9%47.2%
C51Evans gambit, 5...Be7771.4%35.7%
C51Evans gambit, Cordel variation11430.7%48.7%
C51Evans gambit, Goering attack1127.3%59.1%
C51Evans gambit, Morphy attack1338.5%57.7%
C51Evans gambit, Paulsen variation3611.1%44.4%
C51Evans gambit, Steinitz variation10.0%100.0%
C51Evans gambit, Stone-Ware variation5722.8%44.7%
C51Evans gambit, normal variation1233.3%41.7%
C52Evans gambit25326.9%39.5%
C52Evans gambit, Alapin-Steinitz variation450.0%75.0%
C52Evans gambit, Lasker defence1040.0%50.0%
C52Evans gambit, Leonhardt variation2100.0%50.0%
C52Evans gambit, Levenfish variation250.0%25.0%
C52Evans gambit, Richardson attack616.7%25.0%
C52Evans gambit, Tartakower attack9821.4%51.5%
C52Evans gambit, Waller attack616.7%41.7%
C52Evans gambit, compromised defence3010.0%55.0%
C52Evans gambit, compromised defence, Paulsen variation1625.0%68.8%
C53Giuoco Piano475727.8%52.6%
C53Giuoco Piano, Anderssen variation2250.0%52.3%
C53Giuoco Piano, Bird's attack13825.4%51.1%
C53Giuoco Piano, LaBourdonnais variation1540.0%60.0%
C53Giuoco Piano, Mestel variation250.0%75.0%
C53Giuoco Piano, Tarrasch variation425.0%62.5%
C53Giuoco Piano, centre-holding variation2920.7%62.1%
C53Giuoco Piano, close variation4221.4%48.8%
C54Giuoco Piano15426.6%54.9%
C54Giuoco Piano, Greco variation1100.0%50.0%
C54Giuoco Piano, Greco's attack425.0%37.5%
C54Giuoco Piano, Moeller (Therkatz) attack2544.0%38.0%
C55Giuoco piano1100.0%50.0%
C55Two knights defence16128.0%48.1%
C55Two knights defence (Modern bishop's opening)139530.2%56.4%
C55Two knights defence, Keidanz variation1100.0%50.0%
C55Two knights defence, Perreux variation3630.6%48.6%
C55Two knights, Max Lange attack8422.6%47.0%
C55Two knights, Max Lange attack, Marshall variation450.0%50.0%
C55Two knights, Max Lange attack, Schlechter variation8535.3%48.2%
C55Two knights, Max Lange attack, Steinitz variation911.1%61.1%
C56Two knights defence7834.6%50.6%
C56Two knights defence, Canal variation2748.1%42.6%
C57Two knights defence6420.3%36.7%
C57Two knights defence, Fegatello attack7936.7%46.2%
C57Two knights defence, Fegatello attack, Leonhardt variation30.0%0.0%
C57Two knights defence, Fegatello attack, Polerio defence10.0%0.0%
C57Two knights defence, Fritz variation616.7%58.3%
C57Two knights defence, Fritz, Gruber variation1735.3%52.9%
C57Two knights defence, Lolli attack2020.0%55.0%
C57Two knights defence, Pincus variation742.9%64.3%
C57Two knights defence, Ulvestad variation3622.2%58.3%
C57Two knights defence, Wilkes Barre (Traxler) variation7516.0%62.7%
C58Two knights defence22625.2%56.0%
C58Two knights defence, Blackburne variation450.0%75.0%
C58Two knights defence, Bogolyubov variation6920.3%56.5%
C58Two knights defence, Colman variation90.0%77.8%
C58Two knights defence, Kieseritsky variation3228.1%54.7%
C58Two knights defence, Paoli variation1118.2%81.8%
C58Two knights defence, Yankovich variation540.0%40.0%
C59Two knights defence17826.4%46.9%
C59Two knights defence, Goering variation20.0%50.0%
C59Two knights defence, Knorre variation1100.0%50.0%
C59Two knights defence, Steinitz variation17625.6%58.8%
C60Ruy Lopez (Spanish opening)15822.8%53.2%
C60Ruy Lopez, Brentano defence616.7%58.3%
C60Ruy Lopez, Cozio defence40227.4%57.7%
C60Ruy Lopez, Cozio defence, Paulsen variation3737.8%54.1%
C60Ruy Lopez, Lucena defence2321.7%45.7%
C60Ruy Lopez, Nuernberg variation1936.8%44.7%
C60Ruy Lopez, Vinogradov variation933.3%50.0%
C60Ruy Lopez, fianchetto (Smyslov/Barnes) defence50035.2%52.8%
C61Ruy Lopez, Bird's defence37129.4%57.3%
C61Ruy Lopez, Bird's defence, Paulsen variation1631.3%46.9%
C62Ruy Lopez, old Steinitz defence63728.3%54.3%
C62Ruy Lopez, old Steinitz defence, Nimzovich attack2817.9%69.6%
C62Ruy Lopez, old Steinitz defence, semi-Duras variation540.0%80.0%
C63Ruy Lopez, Schliemann defence38827.3%57.0%
C63Ruy Lopez, Schliemann defence, Berger variation69333.6%56.3%
C64Ruy Lopez, Cordel gambit5226.9%71.2%
C64Ruy Lopez, classical (Cordel) defence69131.7%51.7%
C64Ruy Lopez, classical defence, 4.c345028.2%52.3%
C64Ruy Lopez, classical defence, Benelux variation 58233.3%51.0%
C64Ruy Lopez, classical defence, Boden variation1100.0%50.0%
C64Ruy Lopez, classical defence, Charousek variation2123.8%64.3%
C64Ruy Lopez, classical defence, Zaitsev variation250.0%75.0%
C65Ruy Lopez, Berlin defence477529.6%51.3%
C65Ruy Lopez, Berlin defence, 4.O-O20527.3%62.9%
C65Ruy Lopez, Berlin defence, Anderssen variation616.7%8.3%
C65Ruy Lopez, Berlin defence, Beverwijk variation56729.5%53.5%
C65Ruy Lopez, Berlin defence, Duras variation3234.4%45.3%
C65Ruy Lopez, Berlin defence, Kaufmann variation1118.2%45.5%
C65Ruy Lopez, Berlin defence, Mortimer variation1811.1%66.7%
C65Ruy Lopez, Berlin defence, Nyholm attack9034.4%53.9%
C66Ruy Lopez, Berlin defence, 4.O-O, d610640.6%53.3%
C66Ruy Lopez, Berlin defence, hedgehog variation16238.3%53.1%
C66Ruy Lopez, closed Berlin defence, Bernstein variation3438.2%45.6%
C66Ruy Lopez, closed Berlin defence, Chigorin variation40.0%75.0%
C66Ruy Lopez, closed Berlin defence, Showalter variation6349.2%59.5%
C66Ruy Lopez, closed Berlin defence, Wolf variation12840.6%55.5%
C67Ruy Lopez, Berlin defence, Cordel variation4637.0%59.8%
C67Ruy Lopez, Berlin defence, Minckwitz variation5339.6%63.2%
C67Ruy Lopez, Berlin defence, Pillsbury variation366.7%33.3%
C67Ruy Lopez, Berlin defence, Rio de Janeiro variation850.0%75.0%
C67Ruy Lopez, Berlin defence, Rosenthal variation4141.5%54.9%
C67Ruy Lopez, Berlin defence, Trifunovic variation30.0%100.0%
C67Ruy Lopez, Berlin defence, Winawer attack1070.0%45.0%
C67Ruy Lopez, Berlin defence, Zukertort variation1560.0%43.3%
C67Ruy Lopez, Berlin defence, open variation804434.4%52.7%
C67Ruy Lopez, open Berlin defence, 5...Be712033.3%55.8%
C67Ruy Lopez, open Berlin defence, Showalter variation425.0%62.5%
C67Ruy Lopez, open Berlin defence, l'Hermet variation9534.7%44.7%
C68Ruy Lopez, exchange variation33025.5%57.3%
C68Ruy Lopez, exchange, Alekhine variation7631.6%43.4%
C68Ruy Lopez, exchange, Keres variation27536.7%51.1%
C68Ruy Lopez, exchange, Romanovsky variation1118.2%45.5%
C69Ruy Lopez, exchange variation, 5.O-O74529.7%53.6%
C69Ruy Lopez, exchange variation, Alapin gambit15932.1%53.1%
C69Ruy Lopez, exchange, Bronstein variation53130.7%51.3%
C69Ruy Lopez, exchange, Gligoric variation61135.2%53.8%
C70Ruy Lopez7628.9%52.6%
C70Ruy Lopez, Alapin's defence deferred70.0%42.9%
C70Ruy Lopez, Caro variation8530.6%51.8%
C70Ruy Lopez, Classical defence deferred52326.4%52.0%
C70Ruy Lopez, Cozio defence deferred15134.4%53.0%
C70Ruy Lopez, Graz variation933.3%61.1%
C70Ruy Lopez, Schliemann defence deferred4615.2%57.6%
C70Ruy Lopez, Taimanov (chase/wing/accelerated counterthrust) variation26026.5%54.8%
C70Ruy Lopez, fianchetto defence deferred1947.4%65.8%
C71Ruy Lopez, modern Steinitz defence14529.0%51.7%
C71Ruy Lopez, modern Steinitz defence, Duras (Keres) variation19532.3%52.6%
C71Ruy Lopez, modern Steinitz defence, Three knights variation2825.0%58.9%
C72Ruy Lopez, modern Steinitz defence, 5.O-O51729.8%55.7%
C73Ruy Lopez, modern Steinitz defence, Alapin variation30725.7%54.9%
C73Ruy Lopez, modern Steinitz defence, Richter variation23831.5%51.5%
C74Ruy Lopez, Siesta, Kopayev variation12827.3%52.7%
C74Ruy Lopez, modern Steinitz defence6541.5%56.2%
C74Ruy Lopez, modern Steinitz defence, siesta variation4725.5%48.9%
C75Ruy Lopez, modern Steinitz defence30428.0%57.4%
C75Ruy Lopez, modern Steinitz defence, Rubinstein variation14332.9%58.4%
C76Ruy Lopez, modern Steinitz defence, fianchetto (Bronstein) variation60528.3%51.0%
C77Ruy Lopez, Anderssen variation140130.0%49.7%
C77Ruy Lopez, Morphy defence40732.9%54.5%
C77Ruy Lopez, Morphy defence, Duras variation10531.4%47.1%
C77Ruy Lopez, Treybal (Bayreuth) variation (exchange var. deferred)19631.1%51.3%
C77Ruy Lopez, Wormald (Alapin) attack66033.2%50.5%
C77Ruy Lopez, Wormald attack, Gruenfeld variation450.0%75.0%
C77Ruy Lopez, four knights (Tarrasch) variation29830.5%55.5%
C78Ruy Lopez, ...b5 & ...d69727.8%49.0%
C78Ruy Lopez, 5.O-O267631.5%54.7%
C78Ruy Lopez, Archangelsk (counterthrust) variation356129.3%54.2%
C78Ruy Lopez, Moeller defence78629.9%52.1%
C78Ruy Lopez, Rabinovich variation10.0%100.0%
C78Ruy Lopez, Wing attack2045.0%62.5%
C79Ruy Lopez, Steinitz defence deferred (Russian defence)35432.8%52.0%
C79Ruy Lopez, Steinitz defence deferred, Lipnitsky variation1844.4%50.0%
C79Ruy Lopez, Steinitz defence deferred, Rubinstein variation1216.7%66.7%
C80Ruy Lopez, open (Tarrasch) defence12438.7%49.2%
C80Ruy Lopez, open, 6.d44727.7%60.6%
C80Ruy Lopez, open, 7.Bb349730.6%52.1%
C80Ruy Lopez, open, 8...Be6133032.0%46.0%
C80Ruy Lopez, open, 8.de1723.5%52.9%
C80Ruy Lopez, open, Berger variation666.7%33.3%
C80Ruy Lopez, open, Bernstein variation96836.3%58.1%
C80Ruy Lopez, open, Bernstein variation, Karpov gambit1163.6%68.2%
C80Ruy Lopez, open, Friess attack850.0%37.5%
C80Ruy Lopez, open, Harksen gambit50.0%60.0%
C80Ruy Lopez, open, Richter variation30.0%33.3%
C80Ruy Lopez, open, Riga variation4030.0%57.5%
C80Ruy Lopez, open, Schlechter defence2339.1%32.6%
C80Ruy Lopez, open, Tartakower variation1136.4%63.6%
C80Ruy Lopez, open, Zukertort variation714.3%50.0%
C81Ruy Lopez, open, Howell attack9537.9%57.9%
C81Ruy Lopez, open, Howell attack, Ekstroem variation1752.9%61.8%
C82Ruy Lopez, open, 9.c3616.7%58.3%
C82Ruy Lopez, open, Berlin variation1833.3%61.1%
C82Ruy Lopez, open, Dilworth variation8827.3%52.3%
C82Ruy Lopez, open, Italian variation8931.5%61.8%
C82Ruy Lopez, open, Motzko attack8538.8%52.4%
C82Ruy Lopez, open, Motzko attack, Nenarokov variation850.0%37.5%
C82Ruy Lopez, open, St. Petersburg variation27838.1%59.4%
C83Ruy Lopez, open, 9...Be7, 10.Re12231.8%56.8%
C83Ruy Lopez, open, Breslau variation50.0%80.0%
C83Ruy Lopez, open, Malkin variation1330.8%69.2%
C83Ruy Lopez, open, classical defence18538.9%57.8%
C84Ruy Lopez, closed defence120332.1%51.9%
C84Ruy Lopez, closed, centre attack22031.4%50.2%
C85Ruy Lopez, Exchange variation doubly deferred (DERLD)161331.0%53.4%
C86Ruy Lopez, Worrall attack9627.1%58.3%
C86Ruy Lopez, Worrall attack, sharp line27532.4%49.6%
C86Ruy Lopez, Worrall attack, solid line25130.3%50.6%
C87Ruy Lopez, closed, Averbach variation39230.1%57.4%
C88Ruy Lopez, Noah's ark trap50.0%60.0%
C88Ruy Lopez, Trajkovic counter-attack28927.0%53.3%
C88Ruy Lopez, closed412727.4%48.3%
C88Ruy Lopez, closed, 7...O-O791829.8%51.7%
C88Ruy Lopez, closed, 7...d6, 8.d412623.8%38.1%
C88Ruy Lopez, closed, 8.c34725.5%51.1%
C88Ruy Lopez, closed, Balla variation2937.9%63.8%
C88Ruy Lopez, closed, anti-Marshall 8.a4159128.8%51.8%
C89Ruy Lopez, Marshall counter-attack333033.6%51.3%
C89Ruy Lopez, Marshall counter-attack, 11...c699835.3%48.1%
C89Ruy Lopez, Marshall, Herman Steiner variation345.9%50.0%
C89Ruy Lopez, Marshall, Kevitz variation1428.6%42.9%
C89Ruy Lopez, Marshall, main line, 12.d2d4120827.6%55.8%
C89Ruy Lopez, Marshall, main line, 14...Qh387041.6%48.7%
C89Ruy Lopez, Marshall, main line, Spassky variation1100.0%50.0%
C90Ruy Lopez, closed (with ...d6)240927.5%49.3%
C90Ruy Lopez, closed, Lutikov variation2650.0%51.9%
C90Ruy Lopez, closed, Pilnik variation308926.1%52.3%
C90Ruy Lopez, closed, Suetin variation5525.5%49.1%
C91Ruy Lopez, closed, 9.d4382226.9%55.9%
C91Ruy Lopez, closed, Bogolyubov variation623932.0%51.8%
C92Ruy Lopez, closed, 9.h356126.7%55.8%
C92Ruy Lopez, closed, Flohr-Zaitsev system (Lenzerheide variation)356732.5%53.9%
C92Ruy Lopez, closed, Keres (9...a5) variation4922.4%60.2%
C92Ruy Lopez, closed, Kholmov variation19726.4%58.9%
C92Ruy Lopez, closed, Ragozin-Petrosian (`Keres') variation30733.2%64.5%
C93Ruy Lopez, closed, Smyslov defence25033.2%57.8%
C94Ruy Lopez, closed, Breyer defence12237.7%53.3%
C95Ruy Lopez, closed, Breyer, Borisenko variation234730.3%56.3%
C95Ruy Lopez, closed, Breyer, Gligoric variation7119.7%66.2%
C95Ruy Lopez, closed, Breyer, Simagin variation7944.3%62.7%
C96Ruy Lopez, closed (10...c5)123629.7%59.2%
C96Ruy Lopez, closed (8...Na5)5225.0%52.9%
C96Ruy Lopez, closed, Borisenko defence8228.0%57.9%
C96Ruy Lopez, closed, Keres (...Nd7) defence32938.6%60.9%
C96Ruy Lopez, closed, Rossolimo defence520.0%70.0%
C97Ruy Lopez, closed, Chigorin defence173723.0%60.0%
C98Ruy Lopez, closed, Chigorin, 12...Nc626226.3%63.9%
C98Ruy Lopez, closed, Chigorin, Rauzer attack10.0%0.0%
C99Ruy Lopez, closed, Chigorin, 12...c5d4207234.2%59.0%
D00Blackmar gambit8229.3%42.7%
D00Blackmar-Diemer gambit3215.6%51.6%
D00Blackmar-Diemer, Euwe defence110.0%45.5%
D00Blackmar-Diemer, Lemberg counter-gambit250.0%75.0%
D00Levitsky attack (Queen's bishop attack)262924.6%49.8%
D00Queen's pawn game199825.3%51.3%
D00Queen's pawn, Chigorin variation150722.2%51.9%
D00Queen's pawn, Mason variation199924.9%51.8%
D00Queen's pawn, Mason variation, Steinitz counter-gambit58930.9%50.4%
D00Queen's pawn, stonewall attack10225.5%49.0%
D01Richter-Veresov attack124026.5%46.3%
D01Richter-Veresov attack, Richter variation6540.0%43.1%
D01Richter-Veresov attack, Veresov variation5520.0%55.5%
D02Queen's bishop game353728.4%51.2%
D02Queen's pawn game1426727.7%52.9%
D02Queen's pawn game, Chigorin variation172424.8%54.9%
D02Queen's pawn game, Krause variation82933.5%51.7%
D03Torre attack (Tartakower variation)93423.2%50.4%
D04Queen's pawn game226230.7%53.4%
D05Colle system80430.6%52.4%
D05Queen's pawn game204528.9%53.2%
D05Queen's pawn game, Rubinstein (Colle-Zukertort) variation78132.7%55.8%
D05Queen's pawn game, Zukertort variation3531.4%58.6%
D06QGD, Grau (Sahovic) defence140125.1%56.0%
D06QGD, Marshall defence35729.4%59.5%
D06QGD, symmetrical (Austrian) defence11228.6%56.3%
D06Queen's Gambit2119.0%57.1%
D07QGD, Chigorin defence232427.6%57.5%
D07QGD, Chigorin defence, Janowski variation57924.0%62.1%
D08QGD, Albin counter-gambit22536.4%54.7%
D08QGD, Albin counter-gambit, Alapin variation2740.7%61.1%
D08QGD, Albin counter-gambit, Balogh variation10.0%0.0%
D08QGD, Albin counter-gambit, Janowski variation10.0%100.0%
D08QGD, Albin counter-gambit, Krenosz variation250.0%75.0%
D09QGD, Albin counter-gambit, 5.g312429.0%56.5%
D10QGD Slav defence517530.0%54.3%
D10QGD Slav defence, Alekhine variation41220.6%56.2%
D10QGD Slav defence, exchange variation273230.6%51.8%
D10QGD Slav, Winawer counter-gambit30427.3%56.7%
D11QGD Slav, 3.Nf3509428.7%54.2%
D11QGD Slav, 4.e3493929.8%55.3%
D11QGD Slav, Breyer variation26829.1%53.0%
D12QGD Slav, 4.e3 Bf5839928.2%54.5%
D12QGD Slav, Amsterdam variation7335.6%47.9%
D12QGD Slav, Landau variation1100.0%50.0%
D12QGD Slav, exchange variation43824.9%53.1%
D13QGD Slav, exchange variation138532.3%53.4%
D14QGD Slav, exchange variation, 6.Bf4 Bf577931.8%51.3%
D14QGD Slav, exchange, Trifunovic variation21341.3%50.2%
D15QGD Slav accepted31528.6%51.1%
D15QGD Slav, 4.Nc3398128.7%52.7%
D15QGD Slav, 5.e3 (Alekhine variation)30825.0%50.2%
D15QGD Slav, Schlechter variation32929.8%55.3%
D15QGD Slav, Slav gambit32826.5%46.8%
D15QGD Slav, Suechting variation8520.0%53.5%
D15QGD Slav, Tolush-Geller gambit31427.1%45.7%
D16QGD Slav accepted, Alapin variation25822.5%69.8%
D16QGD Slav, Smyslov variation12927.1%59.3%
D16QGD Slav, Soultanbeieff variation25639.1%56.6%
D16QGD Slav, Steiner variation35928.7%58.6%
D17QGD Slav, Carlsbad variation68532.7%52.4%
D17QGD Slav, Czech defence90535.2%53.9%
D17QGD Slav, Krause attack83826.3%58.1%
D17QGD Slav, Wiesbaden variation66928.0%58.5%
D18QGD Slav, Dutch variation89732.0%57.7%
D18QGD Slav, Dutch, Lasker variation2913.8%65.5%
D19QGD Slav, Dutch variation268629.1%56.5%
D19QGD Slav, Dutch variation, main line49434.4%52.2%
D20QGA, 3.e4399829.1%56.0%
D20QGA, Linares variation6628.8%50.8%
D20Queen's gambit accepted199430.6%55.4%
D21QGA, 3.Nf3117726.2%55.3%
D21QGA, Alekhine defense, Borisenko-Furman variation3729.7%36.5%
D21QGA, Ericson variation2842.9%53.6%
D22QGA, Alekhine defence38233.8%57.7%
D22QGA, Alekhine defence, Alatortsev variation1050.0%65.0%
D22QGA, Haberditz variation21834.9%58.7%
D23QGA, Mannheim variation51932.4%54.3%
D23Queen's gambit accepted18129.8%49.7%
D24QGA, 4.Nc332931.9%54.3%
D24QGA, Bogolyubov variation25216.7%46.4%
D25QGA, 4.e356129.1%57.5%
D25QGA, Flohr variation8030.0%62.5%
D25QGA, Janowsky-Larsen variation71929.2%55.9%
D25QGA, Smyslov variation20330.5%57.6%
D26QGA, 4...e684532.2%53.0%
D26QGA, classical variation132234.4%54.7%
D26QGA, classical variation, 6.O-O42236.5%58.1%
D26QGA, classical, Furman variation560.0%50.0%
D26QGA, classical, Steinitz variation13046.2%59.2%
D27QGA, classical, 6...a6507736.1%53.6%
D27QGA, classical, Geller variation8632.6%43.0%
D27QGA, classical, Rubinstein variation397334.2%55.3%
D28QGA, classical, 7...b527334.1%55.1%
D28QGA, classical, 7.Qe213441.0%55.6%
D29QGA, classical, 8...Bb777831.4%47.6%
D29QGA, classical, Smyslov variation9628.1%54.7%
D30QGD264732.4%51.9%
D30QGD Slav102331.3%52.6%
D30QGD Slav, Semmering variation20331.5%49.3%
D30QGD, Capablanca variation6020.0%46.7%
D30QGD, Capablanca-Duras variation81828.4%52.4%
D30QGD, Hastings variation75035.6%50.6%
D30QGD, Spielmann variation540.0%80.0%
D30QGD, Stonewall variation333.3%83.3%
D30QGD, Vienna variation109639.9%52.4%
D30Queen's gambit declined662531.0%53.3%
D31QGD, 3.Nc395128.4%54.9%
D31QGD, Alapin variation4216.7%41.7%
D31QGD, Charousek (Petrosian) variation188528.5%53.4%
D31QGD, Janowski variation20737.2%55.3%
D31QGD, semi-Slav131431.2%54.0%
D31QGD, semi-Slav, Abrahams variation76730.4%44.4%
D31QGD, semi-Slav, Junge variation2920.7%62.1%
D31QGD, semi-Slav, Koomen variation450.0%50.0%
D31QGD, semi-Slav, Marshall gambit277028.9%54.7%
D31QGD, semi-Slav, Noteboom variation72628.7%52.2%
D32QGD, Tarrasch defence43831.7%54.9%
D32QGD, Tarrasch defence, 4.cd ed3125.8%48.4%
D32QGD, Tarrasch defence, Marshall gambit1936.8%50.0%
D32QGD, Tarrasch defence, Tarrasch gambit728.6%42.9%
D32QGD, Tarrasch, von Hennig-Schara gambit8630.2%58.1%
D33QGD, Tarrasch, Folkestone (Swedish) variation5334.0%58.5%
D33QGD, Tarrasch, Prague variation13433.6%59.3%
D33QGD, Tarrasch, Schlechter-Rubinstein system1323.1%50.0%
D33QGD, Tarrasch, Schlechter-Rubinstein system, Rey Ardid variation1100.0%50.0%
D33QGD, Tarrasch, Wagner variation2429.2%60.4%
D34QGD, Tarrasch, Bogolyubov variation540.0%20.0%
D34QGD, Tarrasch, Prague variation, 7...Be742031.0%59.3%
D34QGD, Tarrasch, Prague variation, 9.Bg5115038.3%57.9%
D34QGD, Tarrasch, Prague variation, Normal position118234.2%58.1%
D34QGD, Tarrasch, Reti variation6038.3%54.2%
D34QGD, Tarrasch, Stoltz variation20.0%100.0%
D35QGD, 3...Nf620133.3%44.0%
D35QGD, Harrwitz attack10436.5%51.0%
D35QGD, exchange variation37832.3%56.1%
D35QGD, exchange, Saemisch variation30729.0%53.3%
D35QGD, exchange, chameleon variation1827.8%63.9%
D35QGD, exchange, positional line250127.6%53.0%
D35QGD, exchange, positional line, 5...c6175828.2%55.5%
D36QGD, exchange, positional line, 6.Qc241332.7%51.5%
D37QGD, 4.Nf3649132.3%53.3%
D37QGD, classical variation (5.Bf4)796233.0%53.6%
D38QGD, Ragozin variation769632.4%53.7%
D39QGD, Ragozin, Vienna variation150536.7%50.8%
D40QGD, Semi-Tarrasch defence100233.3%51.8%
D40QGD, Semi-Tarrasch defence, Pillsbury variation4940.8%53.1%
D40QGD, Semi-Tarrasch, symmetrical variation6532.3%46.9%
D41QGD, Semi-Tarrasch with e335036.3%54.7%
D41QGD, Semi-Tarrasch, 5.cd98136.2%57.8%
D41QGD, Semi-Tarrasch, Kmoch variation3053.3%60.0%
D41QGD, Semi-Tarrasch, San Sebastian variation8025.0%68.8%
D42QGD, Semi-Tarrasch, 7.Bd364436.2%57.8%
D43QGD semi-Slav2008529.2%53.4%
D43QGD semi-Slav, Hastings variation825.0%25.0%
D44QGD semi-Slav, 5.Bg5 dc40133.4%48.6%
D44QGD semi-Slav, Botvinnik system (anti-Meran)36224.0%47.7%
D44QGD semi-Slav, Ekstrom variation5320.8%38.7%
D44QGD semi-Slav, anti-Meran gambit193326.1%60.0%
D44QGD semi-Slav, anti-Meran, Alatortsev system5111.8%60.8%
D44QGD semi-Slav, anti-Meran, Lilienthal variation48321.3%58.7%
D44QGD semi-Slav, anti-Meran, Szabo variation21420.1%41.4%
D45QGD semi-Slav, 5...Nd7130526.6%51.5%
D45QGD semi-Slav, 5.e3142128.5%57.0%
D45QGD semi-Slav, Rubinstein (anti-Meran) system3135.5%59.7%
D45QGD semi-Slav, Stoltz variation3862930.5%52.4%
D45QGD semi-Slav, accelerated Meran (Alekhine variation)352832.7%53.5%
D45QGD semi-Slav, stonewall defence2619.2%67.3%
D46QGD semi-Slav, 6.Bd310828.7%51.4%
D46QGD semi-Slav, Bogolyubov variation44530.1%56.4%
D46QGD semi-Slav, Chigorin defence85232.7%53.6%
D46QGD semi-Slav, Romih variation22928.4%64.0%
D47QGD semi-Slav, 7.Bc482427.4%57.9%
D47QGD semi-Slav, Meran variation315231.4%53.0%
D47QGD semi-Slav, Meran, Wade variation2128129.3%52.9%
D47QGD semi-Slav, neo-Meran (Lundin variation)71431.1%56.2%
D48QGD semi-Slav, Meran34923.2%48.3%
D48QGD semi-Slav, Meran, 8...a6659330.9%48.9%
D48QGD semi-Slav, Meran, Pirc variation3429.4%64.7%
D48QGD semi-Slav, Meran, Reynolds' variation135128.9%55.9%
D48QGD semi-Slav, Meran, old main line20033.5%57.3%
D49QGD semi-Slav, Meran, Blumenfeld variation54529.5%51.7%
D49QGD semi-Slav, Meran, Rabinovich variation11340.7%61.1%
D49QGD semi-Slav, Meran, Rellstab attack3633.3%50.0%
D49QGD semi-Slav, Meran, Sozin variation41539.8%49.0%
D49QGD semi-Slav, Meran, Stahlberg variation8932.6%52.2%
D50QGD, 4.Bg531329.1%57.0%
D50QGD, Been-Koomen variation1428.6%42.9%
D50QGD, Canal (Venice) variation30.0%33.3%
D50QGD, Semi-Tarrasch3050.0%61.7%
D50QGD, Semi-Tarrasch, Krause variation366.7%33.3%
D50QGD, Semi-Tarrasch, Primitive Pillsbury variation2528.0%38.0%
D51QGD3417.6%67.6%
D51QGD, 4.Bg5 Nbd712729.9%55.9%
D51QGD, 5...c68127.2%58.0%
D51QGD, Alekhine variation1421.4%53.6%
D51QGD, Capablanca anti-Cambridge Springs variation1631.3%59.4%
D51QGD, Manhattan variation2429.2%56.3%
D51QGD, Rochlin variation10.0%0.0%
D52QGD37429.1%55.2%
D52QGD, Cambridge Springs defence8248.8%47.6%
D52QGD, Cambridge Springs defence, 7.cd43332.3%57.3%
D52QGD, Cambridge Springs defence, Argentine variation3221.9%48.4%
D52QGD, Cambridge Springs defence, Bogoljubow variation69429.8%54.4%
D52QGD, Cambridge Springs defence, Capablanca variation4136.6%50.0%
D52QGD, Cambridge Springs defence, Rubinstein variation22531.6%55.3%
D52QGD, Cambridge Springs defence, Yugoslav variation112926.9%58.3%
D53QGD, 4.Bg5 Be764635.4%56.3%
D53QGD, 4.Bg5 Be7, 5.e3 O-O3237.5%56.3%
D53QGD, Lasker variation728.6%57.1%
D54QGD, Anti-neo-orthodox variation4231.0%53.6%
D55QGD, 6.Nf336032.5%59.0%
D55QGD, Neo-orthodox variation1457.1%64.3%
D55QGD, Neo-orthodox variation, 7.Bh453431.6%53.7%
D55QGD, Neo-orthodox variation, 7.Bxf631536.8%51.4%
D55QGD, Petrosian variation46638.8%52.7%
D55QGD, Pillsbury attack10.0%0.0%
D56QGD, Lasker defence52730.2%52.1%
D56QGD, Lasker defence, Teichmann variation14833.1%59.8%
D57QGD, Lasker defence, Bernstein variation2937.9%50.0%
D57QGD, Lasker defence, main line5034.0%57.0%
D58QGD, Tartakower (Makagonov-Bondarevsky) system1284532.6%52.5%
D59QGD, Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd555737.2%51.3%
D59QGD, Tartakower variation20046.5%41.3%
D60QGD, Orthodox defence35430.8%57.8%
D60QGD, Orthodox defence, Botvinnik variation23736.3%53.2%
D60QGD, Orthodox defence, Rauzer variation2532.0%56.0%
D61QGD, Orthodox defence, Rubinstein variation53230.5%53.6%
D62QGD, Orthodox defence, 7.Qc2 c5, 8.cd (Rubinstein)26841.4%50.2%
D63QGD, Orthodox defence11125.2%57.7%
D63QGD, Orthodox defence, 7.Rc134034.1%54.7%
D63QGD, Orthodox defence, Capablanca variation40.0%75.0%
D63QGD, Orthodox defence, Pillsbury attack2544.0%42.0%
D63QGD, Orthodox defence, Swiss (Henneberger) variation21729.0%50.9%
D63QGD, Orthodox defence, Swiss, Karlsbad variation30129.6%52.3%
D64QGD, Orthodox defence, Rubinstein attack (with Rc1)17841.0%58.1%
D64QGD, Orthodox defence, Rubinstein attack, Gruenfeld variation10636.8%49.5%
D64QGD, Orthodox defence, Rubinstein attack, Karlsbad variation3036.7%41.7%
D64QGD, Orthodox defence, Rubinstein attack, Wolf variation3441.2%52.9%
D65QGD, Orthodox defence, Rubinstein attack, main line2035.0%42.5%
D66QGD, Orthodox defence, Bd3 line37930.3%55.5%
D66QGD, Orthodox defence, Bd3 line, fianchetto variation3727.0%64.9%
D67QGD, Orthodox defence, Bd3 line6243.5%52.4%
D67QGD, Orthodox defence, Bd3 line, 11.O-O18331.1%62.6%
D67QGD, Orthodox defence, Bd3 line, Alekhine variation11348.7%63.3%
D67QGD, Orthodox defence, Bd3 line, Capablanca freeing manoevre10.0%100.0%
D67QGD, Orthodox defence, Bd3 line, Janowski variation757.1%42.9%
D68QGD, Orthodox defence, classical variation13836.2%54.3%
D68QGD, Orthodox defence, classical, 13.d1b1 (Maroczy)771.4%64.3%
D68QGD, Orthodox defence, classical, 13.d1c2 (Vidmar)8337.3%59.6%
D69QGD, Orthodox defence, classical, 13.de2458.3%50.0%
D70Neo-Gruenfeld (Kemeri) defence16940.2%55.0%
D70Neo-Gruenfeld defence40623.6%52.5%
D71Neo-Gruenfeld, 5.cd21239.6%55.2%
D72Neo-Gruenfeld, 5.cd, main line34532.2%52.3%
D73Neo-Gruenfeld, 5.Nf3123440.1%53.0%
D74Neo-Gruenfeld, 6.cd Nxd5, 7.O-O54833.8%57.2%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc340042.5%54.3%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.dc4330.2%64.0%
D76Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb6124934.3%55.5%
D77Neo-Gruenfeld, 6.O-O182333.8%53.6%
D78Neo-Gruenfeld, 6.O-O c6178332.7%53.9%
D79Neo-Gruenfeld, 6.O-O, main line87336.7%53.2%
D80Gruenfeld defence82641.4%53.4%
D80Gruenfeld, Stockholm variation59135.0%50.2%
D81Gruenfeld, Russian variation38834.0%55.4%
D82Gruenfeld, 4.Bf457032.8%53.6%
D83Gruenfeld, Gruenfeld gambit6530.8%50.8%
D83Gruenfeld, Gruenfeld gambit, Botvinnik variation2365.2%41.3%
D83Gruenfeld, Gruenfeld gambit, Capablanca variation9741.2%56.7%
D84Gruenfeld, Gruenfeld gambit accepted9127.5%65.4%
D85Gruenfeld, exchange variation290935.9%52.7%
D85Gruenfeld, modern exchange variation764836.8%53.6%
D86Gruenfeld, exchange, Larsen variation1926.3%60.5%
D86Gruenfeld, exchange, Simagin's improved variation12932.6%54.3%
D86Gruenfeld, exchange, Simagin's lesser variation6230.6%62.1%
D86Gruenfeld, exchange, classical variation133331.9%54.6%
D87Gruenfeld, exchange, Seville variation18038.3%65.8%
D87Gruenfeld, exchange, Spassky variation69334.1%57.0%
D88Gruenfeld, Spassky variation, main line, 10...cd, 11.cd33440.7%52.1%
D89Gruenfeld, Spassky variation, main line, 13.Bd310732.7%53.7%
D89Gruenfeld, exchange, Sokolsky variation6434.4%39.1%
D90Gruenfeld, Flohr variation30535.7%49.0%
D90Gruenfeld, Schlechter variation2623.1%65.4%
D90Gruenfeld, Three knights variation70834.2%53.8%
D91Gruenfeld, 5.Bg5206131.9%49.6%
D92Gruenfeld, 5.Bf4110432.9%55.1%
D93Gruenfeld with Bf4 e368838.1%52.9%
D94Gruenfeld with e3 Bd33040.0%60.0%
D94Gruenfeld, 5.e375735.1%57.9%
D94Gruenfeld, Flohr defence6624.2%54.5%
D94Gruenfeld, Makogonov variation22331.4%50.7%
D94Gruenfeld, Opovcensky variation20737.2%50.0%
D94Gruenfeld, Smyslov defence25735.8%52.9%
D95Gruenfeld with e3 & Qb37138.0%51.4%
D95Gruenfeld, Botvinnik variation11230.4%43.8%
D96Gruenfeld, Russian variation51530.3%54.0%
D97Gruenfeld, Russian variation with e46930.4%51.4%
D97Gruenfeld, Russian, Alekhine (Hungarian) variation405331.5%51.4%
D97Gruenfeld, Russian, Byrne (Simagin) variation34025.6%51.3%
D97Gruenfeld, Russian, Levenfish variation1822.2%55.6%
D97Gruenfeld, Russian, Prins variation117934.3%55.4%
D97Gruenfeld, Russian, Szabo (Boleslavsky) variation34129.0%60.6%
D98Gruenfeld, Russian, Keres variation1225.0%70.8%
D98Gruenfeld, Russian, Smyslov variation59327.7%54.0%
D99Gruenfeld defence, Smyslov, Yugoslav variation5149.0%59.8%
D99Gruenfeld defence, Smyslov, main line38630.6%61.7%
E00Catalan opening656830.9%54.1%
E00Neo-Indian (Seirawan) attack57324.1%49.7%
E00Queen's pawn game147827.7%54.0%
E01Catalan, closed52330.4%53.6%
E02Catalan, open, 5.Qa49438.3%59.6%
E03Catalan, open, 5.Qa4 Nbd7, 6.Qxc43036.7%55.0%
E03Catalan, open, Alekhine variation156.7%43.3%
E04Catalan, open, 5.Nf31097532.5%53.4%
E05Catalan, open, classical line50231.3%56.3%
E06Catalan, closed, 5.Nf3650034.6%54.1%
E07Catalan, closed, 6...Nbd718629.6%52.4%
E07Catalan, closed, Botvinnik variation15324.2%60.5%
E08Catalan, closed, 7.Qc223931.4%54.2%
E08Catalan, closed, Qc2 & b342028.1%51.9%
E08Catalan, closed, Spassky gambit2524.0%56.0%
E08Catalan, closed, Zagoryansky variation450.0%75.0%
E09Catalan, closed, Sokolsky variation540.0%60.0%
E09Catalan, closed, main line66528.1%56.8%
E10Blumenfeld counter-gambit12527.2%54.4%
E10Blumenfeld counter-gambit accepted20523.4%53.7%
E10Blumenfeld counter-gambit, Dus-Chotimursky variation38328.7%54.8%
E10Blumenfeld counter-gambit, Spielmann variation9619.8%53.6%
E10Doery defence10823.1%45.8%
E10Dzindzikhashvili defence19528.2%59.7%
E10Queen's pawn game671931.6%54.4%
E11Bogo-Indian defence360932.6%55.5%
E11Bogo-Indian defence, Gruenfeld variation373830.8%55.4%
E11Bogo-Indian defence, Monticelli trap2825.0%55.4%
E11Bogo-Indian defence, Nimzovich variation270328.6%56.5%
E12Queen's Indian defence51629.3%50.9%
E12Queen's Indian, 4.Nc3686229.2%52.6%
E12Queen's Indian, 4.Nc3, Botvinnik variation11128.8%49.5%
E12Queen's Indian, Miles variation143131.6%52.8%
E12Queen's Indian, Petrosian system1135131.9%53.4%
E13Queen's Indian, 4.Nc3, main line36625.7%55.7%
E14Queen's Indian, 4.e3279629.9%52.2%
E14Queen's Indian, Averbakh variation728.6%28.6%
E15Queen's Indian, 4.g3183940.9%55.2%
E15Queen's Indian, 4.g3 Bb724730.8%52.6%
E15Queen's Indian, Buerger variation2821.4%53.6%
E15Queen's Indian, Nimzovich variation (exaggerated fianchetto)3186729.4%54.9%
E15Queen's Indian, Rubinstein variation12822.7%52.0%
E16Queen's Indian, Capablanca variation41432.9%57.2%
E16Queen's Indian, Riumin variation42132.5%56.2%
E16Queen's Indian, Yates variation80131.2%59.2%
E17Queen's Indian, 5.Bg2 Be79333.3%48.9%
E17Queen's Indian, Euwe variation10436.5%60.6%
E17Queen's Indian, Opovcensky variation132829.9%57.9%
E17Queen's Indian, anti-Queen's Indian system28533.7%54.0%
E17Queen's Indian, old main line, 6.O-O90830.4%56.6%
E18Queen's Indian, old main line, 7.Nc3309033.0%56.2%
E19Queen's Indian, old main line, 9.Qxc3170333.1%54.8%
E20Nimzo-Indian defence27229.4%46.3%
E20Nimzo-Indian, Kmoch variation107425.0%54.3%
E20Nimzo-Indian, Mikenas attack1827.8%36.1%
E20Nimzo-Indian, Romanishin-Kasparov (Steiner) system76729.1%50.0%
E21Nimzo-Indian, three knights variation339729.1%51.7%
E21Nimzo-Indian, three knights, Euwe variation837.5%56.3%
E21Nimzo-Indian, three knights, Korchnoi variation4334.9%61.6%
E22Nimzo-Indian, Spielmann variation13233.3%52.3%
E23Nimzo-Indian, Spielmann, 4...c5, 5.dc Nc63020.0%43.3%
E23Nimzo-Indian, Spielmann, Karlsbad variation1729.4%38.2%
E23Nimzo-Indian, Spielmann, San Remo variation650.0%58.3%
E24Nimzo-Indian, Saemisch variation19732.5%49.7%
E24Nimzo-Indian, Saemisch, Botvinnik variation3125.8%48.4%
E25Nimzo-Indian, Saemisch variation12436.3%53.6%
E25Nimzo-Indian, Saemisch, Keres variation40130.9%51.4%
E25Nimzo-Indian, Saemisch, Romanovsky variation15643.6%50.6%
E26Nimzo-Indian, Saemisch variation13326.3%48.5%
E26Nimzo-Indian, Saemisch, O'Kelly variation3721.6%37.8%
E27Nimzo-Indian, Saemisch variation4930.6%52.0%
E28Nimzo-Indian, Saemisch variation9431.9%53.2%
E29Nimzo-Indian, Saemisch, Capablanca variation12940.3%50.4%
E29Nimzo-Indian, Saemisch, main line13230.3%59.1%
E30Nimzo-Indian, Leningrad variation47131.2%50.8%
E30Nimzo-Indian, Leningrad, ...b5 gambit3444.1%42.6%
E31Nimzo-Indian, Leningrad, main line21120.9%46.9%
E32Nimzo-Indian, classical variation879932.4%53.1%
E32Nimzo-Indian, classical, Adorjan gambit19428.9%57.7%
E33Nimzo-Indian, classical, 4...Nc612824.2%62.9%
E33Nimzo-Indian, classical, Milner-Barry (Zurich) variation58426.9%53.3%
E34Nimzo-Indian, classical, Noa variation82433.7%52.3%
E35Nimzo-Indian, classical, Noa variation, 5.cd ed97433.2%49.7%
E36Nimzo-Indian, classical, Botvinnik variation1533.3%56.7%
E36Nimzo-Indian, classical, Noa variation, 5.a345532.5%56.0%
E36Nimzo-Indian, classical, Noa variation, main line50.0%20.0%
E37Nimzo-Indian, classical, Noa variation, main line, 7.Qc215632.1%59.6%
E37Nimzo-Indian, classical, San Remo variation1241.7%54.2%
E38Nimzo-Indian, classical, 4...c579230.4%57.0%
E39Nimzo-Indian, classical, Pirc variation137632.4%56.5%
E40Nimzo-Indian, 4.e322626.1%54.6%
E40Nimzo-Indian, 4.e3, Taimanov variation10824.1%51.9%
E41Nimzo-Indian, 4.e3 c582333.8%50.4%
E41Nimzo-Indian, e3, Huebner variation93925.9%49.4%
E42Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein)207331.5%55.3%
E43Nimzo-Indian, Fischer variation63730.0%54.9%
E44Nimzo-Indian, Fischer variation, 5.Ne289724.7%56.7%
E45Nimzo-Indian, 4.e3, Bronstein (Byrne) variation69131.3%54.7%
E46Nimzo-Indian, 4.e3 O-O19535.9%51.3%
E46Nimzo-Indian, Reshevsky variation146228.1%52.4%
E46Nimzo-Indian, Simagin variation10928.4%48.2%
E47Nimzo-Indian, 4.e3 O-O, 5.Bd386337.5%55.0%
E48Nimzo-Indian, 4.e3 O-O, 5.Bd3 d568131.4%51.8%
E49Nimzo-Indian, 4.e3, Botvinnik system43929.4%47.9%
E50Nimzo-Indian, 4.e3 e8g8, 5.Nf3, without ...d514032.1%56.8%
E51Nimzo-Indian, 4.e3 e8g8, 5.Nf3 d7d528733.1%50.3%
E51Nimzo-Indian, 4.e3, Ragozin variation5350.9%57.5%
E52Nimzo-Indian, 4.e3, main line with ...b683132.6%52.3%
E53Nimzo-Indian, 4.e3, Gligoric system with 7...Nbd712639.7%55.6%
E53Nimzo-Indian, 4.e3, Keres variation11533.9%45.7%
E53Nimzo-Indian, 4.e3, main line with ...c5160537.2%51.8%
E54Nimzo-Indian, 4.e3, Gligoric system with 7...dc218935.6%53.8%
E54Nimzo-Indian, 4.e3, Gligoric system, Smyslov variation4436.4%54.5%
E55Nimzo-Indian, 4.e3, Gligoric system, Bronstein variation297134.7%53.5%
E56Nimzo-Indian, 4.e3, main line with 7...Nc6126530.1%54.4%
E57Nimzo-Indian, 4.e3, main line with 8...dc and 9...cd2828.6%71.4%
E58Nimzo-Indian, 4.e3, main line with 8...Bxc3291428.6%48.7%
E59Nimzo-Indian, 4.e3, main line208030.7%54.3%
E60King's Indian defence162823.6%53.3%
E60King's Indian, 3.Nf3468829.1%55.6%
E60King's Indian, 3.g3224031.3%55.7%
E60King's Indian, 3.g3, counterthrust variation1631.3%46.9%
E60King's Indian, Anti-Gruenfeld13922.3%45.7%
E60King's Indian, Danube gambit1631.3%53.1%
E60Queen's pawn, Mengarini attack14124.8%50.7%
E61King's Indian defence, 3.Nc3134328.1%54.2%
E61King's Indian, Smyslov system14626.0%49.3%
E62King's Indian, fianchetto variation15029.3%54.7%
E62King's Indian, fianchetto with ...Nc634124.9%56.7%
E62King's Indian, fianchetto, Kavalek (Bronstein) variation115129.7%58.2%
E62King's Indian, fianchetto, Larsen system31829.2%54.2%
E62King's Indian, fianchetto, Simagin variation16528.5%68.2%
E62King's Indian, fianchetto, Uhlmann (Szabo) variation50130.1%58.4%
E62King's Indian, fianchetto, lesser Simagin (Spassky) variation45224.3%58.6%
E63King's Indian, fianchetto, Panno variation326628.6%57.1%
E64King's Indian, fianchetto, Yugoslav system19224.0%56.8%
E65King's Indian, fianchetto, Yugoslav, 7.O-O23930.5%57.5%
E66King's Indian, fianchetto, Yugoslav Panno46427.2%55.6%
E67King's Indian, fianchetto with ...Nd719628.6%62.8%
E67King's Indian, fianchetto, classical variation98631.5%54.9%
E68King's Indian, fianchetto, classical variation, 8.e4211829.1%58.7%
E69King's Indian, fianchetto, classical main line125730.3%59.9%
E70King's Indian, 4.e485425.6%54.6%
E70King's Indian, Kramer system23521.7%53.4%
E70King's Indian, accelerated Averbakh system12926.4%50.4%
E71King's Indian, Makagonov system (5.h3)86925.8%55.6%
E72King's Indian with e4 & g34429.5%55.7%
E72King's Indian, Pomar system1553.3%60.0%
E73King's Indian, 5.Be210922.0%49.5%
E73King's Indian, Averbakh system88329.0%52.3%
E73King's Indian, Semi-Averbakh system4323.3%55.8%
E74King's Indian, Averbakh, 6...c525523.1%62.5%
E75King's Indian, Averbakh, main line4632.6%48.9%
E76King's Indian, Four pawns attack30531.8%59.8%
E76King's Indian, Four pawns attack, dynamic line15831.0%50.9%
E77King's Indian, Four pawns attack24132.4%53.1%
E77King's Indian, Four pawns attack, 6.Be250.0%40.0%
E77King's Indian, Four pawns attack, Florentine gambit3930.8%41.0%
E78King's Indian, Four pawns attack, with Be2 and Nf32642.3%55.8%
E79King's Indian, Four pawns attack, main line12644.4%57.1%
E80King's Indian, Saemisch variation51724.8%55.5%
E81King's Indian, Saemisch, 5...O-O233325.5%54.1%
E81King's Indian, Saemisch, Byrne variation8731.0%51.1%
E82King's Indian, Saemisch, double fianchetto variation16529.7%59.7%
E83King's Indian, Saemisch, 6...Nc611117.1%56.3%
E83King's Indian, Saemisch, Panno formation20922.0%54.1%
E83King's Indian, Saemisch, Ruban variation1020.0%50.0%
E84King's Indian, Saemisch, Panno main line84821.9%52.1%
E85King's Indian, Saemisch, orthodox variation6033.3%56.7%
E86King's Indian, Saemisch, orthodox, 7.Nge2 c654822.3%54.9%
E87King's Indian, Saemisch, orthodox, 7.d548820.1%62.7%
E87King's Indian, Saemisch, orthodox, Bronstein variation1127.3%59.1%
E88King's Indian, Saemisch, orthodox, 7.d5 c651331.0%55.1%
E89King's Indian, Saemisch, orthodox main line8026.3%61.9%
E90King's Indian, 5.Nf3120823.6%54.4%
E90King's Indian, Larsen variation11129.7%53.6%
E90King's Indian, Zinnowitz variation9830.6%52.0%
E91King's Indian, 6.Be289225.1%60.2%
E91King's Indian, Kazakh variation69729.4%57.5%
E92King's Indian, Andersson variation45539.8%53.5%
E92King's Indian, Gligoric-Taimanov system250124.8%57.4%
E92King's Indian, Petrosian system20119.4%57.5%
E92King's Indian, Petrosian system, Stein variation121227.2%53.3%
E92King's Indian, classical variation1926.3%44.7%
E93King's Indian, Petrosian system, Keres variation2828.6%50.0%
E93King's Indian, Petrosian system, main line23122.9%55.6%
E94King's Indian, orthodox variation189131.4%57.0%
E94King's Indian, orthodox, 7...Nbd7260426.8%57.0%
E94King's Indian, orthodox, Donner variation22926.6%56.1%
E95King's Indian, orthodox, 7...Nbd7, 8.Re197926.8%56.1%
E96King's Indian, orthodox, 7...Nbd7, main line21533.0%59.3%
E97King's Indian, orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation)858525.0%55.5%
E97King's Indian, orthodox, Aronin-Taimanov, bayonet attack312628.6%57.7%
E98King's Indian, orthodox, Aronin-Taimanov, 9.Ne1315821.2%59.1%
E99King's Indian, orthodox, Aronin-Taimanov, Benko attack4231.0%44.0%
E99King's Indian, orthodox, Aronin-Taimanov, main line13222.7%53.8%

Created in 2005-2013 by CCRL team
Last games added on February 17, 2018