CCRL 40/4
Downloads and Statistics
August 20, 2019
Testing summary:
Total: 2'086'404 games
played by 2'425 programs
28073 CPU days (X2 4600+)

White wins: 810'229 (38.8%)
Black wins: 655'304 (31.4%)
Draws: 620'871 (29.8%)
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) opening7722.1%42.2%
A00Amar gambit1216.7%50.0%
A00Amsterdam attack1833.3%38.9%
A00Anderssen's opening71622.5%48.0%
A00Anti-Borg (Desprez) opening2321.7%58.7%
A00Battambang opening933.3%27.8%
A00Benko's opening1549531.0%50.8%
A00Benko's opening, reversed Alekhine16432.3%48.5%
A00Clemenz (Mead's, Basman's or de Klerk's) opening528023.2%50.0%
A00Dunst (Sleipner, Heinrichsen) opening297528.9%51.0%
A00Durkin's attack6717.9%53.7%
A00Gedult's opening3917.9%50.0%
A00Global opening1618.8%71.9%
A00Grob's attack28121.0%45.0%
A00Grob, Fritz gambit3910.3%20.5%
A00Lasker simul special14027.9%46.8%
A00Mieses opening75819.9%51.1%
A00Novosibirsk opening6720.9%50.7%
A00Polish (Sokolsky) opening211330.6%50.1%
A00Polish, Outflank variation37229.0%48.7%
A00Polish, Tuebingen variation6920.3%50.7%
A00Saragossa opening107921.1%51.5%
A00Van't Kruijs opening142827.6%52.3%
A00Ware (Meadow Hay) opening22620.8%46.2%
A01Nimzovich-Larsen attack162429.3%50.2%
A01Nimzovich-Larsen attack, Dutch variation24226.9%51.4%
A01Nimzovich-Larsen attack, English variation78628.6%50.3%
A01Nimzovich-Larsen attack, Indian variation123728.2%52.3%
A01Nimzovich-Larsen attack, Polish variation3036.7%55.0%
A01Nimzovich-Larsen attack, classical variation287528.3%48.2%
A01Nimzovich-Larsen attack, modern variation409330.8%49.7%
A01Nimzovich-Larsen attack, symmetrical variation89931.0%51.4%
A02Bird's opening418430.8%50.0%
A02Bird's opening, Swiss gambit1414.3%64.3%
A02Bird, From gambit17428.7%50.0%
A02Bird, From gambit, Lasker variation4316.3%57.0%
A02Bird, From gambit, Lipke variation520.0%30.0%
A02Bird, Hobbs gambit633.3%66.7%
A03Bird's opening391525.6%49.1%
A03Bird's opening, Lasker variation6630.3%48.5%
A03Bird's opening, Williams gambit3821.1%60.5%
A03Mujannah opening70.0%42.9%
A04Reti opening2062329.4%53.5%
A04Reti v Dutch324627.7%56.3%
A04Reti, Herrstroem gambit250.0%75.0%
A04Reti, Lisitsin gambit deferred8725.3%46.0%
A04Reti, Pirc-Lisitsin gambit25726.1%55.4%
A04Reti, Wade defence540.0%80.0%
A05Reti opening1304530.0%52.3%
A05Reti, King's Indian attack278629.5%55.6%
A05Reti, King's Indian attack, Reti-Smyslov variation21628.2%48.8%
A05Reti, King's Indian attack, Spassky's variation115730.2%53.7%
A06Reti opening448129.7%52.9%
A06Reti, Nimzovich-Larsen attack493231.9%51.1%
A06Reti, old Indian attack49628.2%52.0%
A06Santasiere's folly21036.2%48.6%
A06Tennison (Lemberg, Zukertort) gambit3815.8%55.3%
A07Reti, King's Indian attack390434.0%52.7%
A07Reti, King's Indian attack (Barcza system)1306230.8%52.9%
A07Reti, King's Indian attack (with ...c5)51027.6%49.3%
A07Reti, King's Indian attack, Keres variation96031.7%52.0%
A07Reti, King's Indian attack, Pachman system26523.8%51.9%
A07Reti, King's Indian attack, Yugoslav variation565931.4%53.7%
A08Reti, King's Indian attack134630.0%53.9%
A08Reti, King's Indian attack, French variation134831.0%51.0%
A09Reti accepted185430.4%52.0%
A09Reti accepted, Keres variation16226.5%59.0%
A09Reti opening132228.0%54.2%
A09Reti, advance variation237426.4%48.0%
A10English opening629026.4%53.6%
A10English, Adorjan defence66635.0%49.8%
A10English, Anglo-Dutch defense187626.1%55.3%
A10English, Jaenisch gambit1723.5%70.6%
A11English, Caro-Kann defensive system223029.4%54.9%
A12English, Bled variation5729.8%53.5%
A12English, Capablanca's variation8531.8%51.2%
A12English, Caro-Kann defensive system32327.6%55.9%
A12English, Caro-Kann defensive system, Bogolyubov variation19626.0%49.7%
A12English, London defensive system67031.0%51.5%
A12English, New York (London) defensive system6830.9%46.3%
A12English, Torre defensive system66833.7%52.2%
A13English opening667527.4%52.7%
A13English opening, Agincourt variation357829.2%52.3%
A13English, Kurajica defence18925.9%53.2%
A13English, Neo-Catalan308632.0%54.0%
A13English, Neo-Catalan accepted272134.0%54.9%
A13English, Romanishin gambit115330.0%54.5%
A13English, Wimpey system44630.0%48.7%
A14English, Neo-Catalan declined140535.5%53.4%
A14English, Symmetrical, Keres defence92136.4%54.9%
A15English opening1568333.2%54.2%
A15English, 1...Nf6 (Anglo-Indian defense)215627.9%52.3%
A16English opening156128.8%53.5%
A16English, Anglo-Gruenfeld defense40429.5%52.1%
A16English, Anglo-Gruenfeld defense, Korchnoi variation1838.9%63.9%
A16English, Anglo-Gruenfeld, Czech defense14531.0%64.5%
A16English, Anglo-Gruenfeld, Smyslov defense8139.5%59.3%
A17English opening44732.4%52.2%
A17English, Nimzo-English opening312131.7%54.4%
A17English, Queens Indian formation31026.5%53.2%
A17English, Queens Indian, Romanishin variation5930.5%50.8%
A18English, Mikenas-Carls variation14427.1%56.6%
A18English, Mikenas-Carls, Flohr variation22931.4%57.2%
A18English, Mikenas-Carls, Kevitz variation5424.1%54.6%
A19English, Mikenas-Carls, Sicilian variation37728.1%53.3%
A20English opening1396329.1%52.4%
A20English, Nimzovich variation36827.2%53.0%
A20English, Nimzovich, Flohr variation74029.5%46.6%
A21English opening399028.7%53.9%
A21English, Keres variation2634.6%44.2%
A21English, Kramnik-Shirov counterattack454629.4%52.2%
A21English, Smyslov defence7330.1%56.2%
A21English, Troeger defence21029.5%53.8%
A22English opening139728.0%51.1%
A22English, Bellon gambit5223.1%44.2%
A22English, Bremen, Smyslov system313428.7%49.0%
A22English, Bremen, reverse dragon185833.7%52.9%
A22English, Carls' Bremen system100626.2%55.5%
A23English, Bremen system, Keres variation51933.3%49.2%
A24English, Bremen system with ...g610027.0%59.5%
A25English, Sicilian reversed144627.8%52.2%
A25English, closed system168928.1%53.9%
A25English, closed system (without ...d6)11422.8%48.2%
A25English, closed, 5.Rb197627.3%51.2%
A25English, closed, 5.Rb1 Taimanov variation1020.0%30.0%
A25English, closed, Hort variation4831.3%49.0%
A25English, closed, Taimanov variation3534.3%48.6%
A26English, Botvinnik system44225.1%49.4%
A26English, closed system40524.9%51.5%
A27English, three knights system97726.8%52.3%
A28English, Bradley Beach variation21728.1%44.9%
A28English, Nenarokov variation9532.6%44.7%
A28English, four knights system78526.5%52.7%
A28English, four knights, 4.e3163628.8%51.5%
A28English, four knights, Capablanca variation66030.9%51.8%
A28English, four knights, Marini variation162432.8%53.4%
A28English, four knights, Nimzovich variation323432.3%52.3%
A28English, four knights, Romanishin variation127435.3%50.3%
A28English, four knights, Stean variation17924.6%55.9%
A29English, four knights, kingside fianchetto2224631.8%51.5%
A30English, symmetrical variation1057530.4%53.9%
A30English, symmetrical, hedgehog system1006932.7%56.0%
A30English, symmetrical, hedgehog, flexible formation59436.4%57.4%
A31English, symmetrical, Benoni formation261928.4%54.0%
A32English, symmetrical variation140830.8%51.7%
A33English, symmetrical variation714335.8%52.3%
A33English, symmetrical, Geller variation495832.9%52.8%
A34English, symmetrical variation229727.8%51.2%
A34English, symmetrical, Rubinstein system41433.1%53.0%
A34English, symmetrical, three knights system289535.5%52.1%
A35English, symmetrical variation52230.8%56.8%
A35English, symmetrical, four knights system559930.8%53.4%
A36English, symmetrical variation19327.5%48.4%
A36English, symmetrical, Botvinnik system107826.8%53.8%
A36English, symmetrical, Botvinnik system reversed17628.4%49.4%
A36English, ultra-symmetrical variation407326.7%50.6%
A37English, symmetrical variation108829.9%53.1%
A37English, symmetrical, Botvinnik system reversed79927.3%51.3%
A38English, symmetrical variation87130.0%53.4%
A38English, symmetrical, main line with b31136.4%36.4%
A38English, symmetrical, main line with d318234.6%51.9%
A39English, symmetrical, main line with d4147837.9%55.3%
A40Beefeater defence3823.7%61.8%
A40Modern defence329426.9%55.6%
A40Polish defence41126.0%57.1%
A40Queen's pawn726028.0%53.6%
A40Queen's pawn, Charlick (Englund) gambit6633.3%68.2%
A40Queen's pawn, English defence85825.1%56.2%
A40Queen's pawn, Franco-Indian (Keres) defence592928.1%55.7%
A40Queen's pawn, Keres defence570828.1%55.6%
A40Queen's pawn, Lundin (Kevitz-Mikenas) defence121928.3%56.6%
A41Modern defence16129.2%55.6%
A41Old Indian defence564625.3%51.5%
A41Old Indian, Tartakower (Wade) variation470424.9%58.5%
A41Queen's Pawn597924.5%55.4%
A41Robatsch defence, Rossolimo variation21825.7%54.1%
A42Modern defence, Averbakh system170929.0%56.8%
A42Modern defence, Averbakh system, Kotov variation128224.2%57.5%
A42Modern defence, Averbakh system, Randspringer variation728.6%28.6%
A42Pterodactyl defence112727.3%61.7%
A43Hawk (Habichd) defence425.0%37.5%
A43Old Benoni defence357826.6%55.5%
A43Old Benoni, Franco-Benoni defence21927.9%63.2%
A43Old Benoni, Mujannah formation21423.4%59.3%
A43Old Benoni, Schmid's system3826.3%52.6%
A43Woozle defence5527.3%50.0%
A44Old Benoni defence10821.3%66.2%
A44Semi-Benoni (`blockade variation')190721.9%61.6%
A45Blackmar-Diemer gambit21527.4%55.1%
A45Canard opening3122.6%53.2%
A45Paleface attack19619.9%41.6%
A45Queen's pawn game744427.3%51.7%
A45Queen's pawn, Bronstein gambit5022.0%47.0%
A45Trompovsky attack (Ruth, Opovcensky opening)1168525.8%51.3%
A46Doery defence250.0%25.0%
A46Queen's pawn game809728.6%53.7%
A46Queen's pawn, Torre attack195328.0%51.9%
A46Queen's pawn, Torre attack, Wagner gambit3826.3%39.5%
A46Queen's pawn, Yusupov-Rubinstein system154931.4%51.5%
A47Queen's Indian defence121727.8%53.0%
A47Queen's Indian, Marienbad system16529.7%48.2%
A47Queen's Indian, Marienbad system, Berg variation922.2%55.6%
A48King's Indian, East Indian defence209430.4%53.7%
A48King's Indian, London system138128.8%52.2%
A48King's Indian, Torre attack222629.0%50.4%
A49King's Indian, fianchetto without c4280629.0%53.8%
A50Kevitz-Trajkovich defence152428.0%55.1%
A50Queen's Indian accelerated49928.7%57.4%
A50Queen's pawn game247830.3%55.6%
A51Budapest defence declined8829.5%53.4%
A51Budapest, Fajarowicz variation22130.8%58.4%
A51Budapest, Fajarowicz, Steiner variation2540.0%52.0%
A52Budapest defence10424.0%51.4%
A52Budapest, Adler variation97231.4%58.3%
A52Budapest, Alekhine variation8020.0%51.3%
A52Budapest, Alekhine, Abonyi variation5626.8%58.0%
A52Budapest, Rubinstein variation108136.5%58.6%
A53Old Indian defence216630.0%54.6%
A53Old Indian, Janowski variation116620.8%57.0%
A54Old Indian, Dus-Khotimirsky variation147.1%75.0%
A54Old Indian, Ukrainian variation26629.3%53.4%
A54Old Indian, Ukrainian variation, 4.Nf337127.8%54.9%
A55Old Indian, main line150627.4%61.8%
A56Benoni defence205227.0%58.3%
A56Benoni defence, Hromodka system118521.9%58.4%
A56Czech Benoni defence90225.1%62.2%
A56Czech Benoni, King's Indian system58819.2%61.1%
A56Vulture defence30.0%33.3%
A57Benko gambit169525.7%54.9%
A57Benko gambit half accepted140329.5%57.5%
A57Benko gambit, Nescafe Frappe attack120.0%33.3%
A57Benko gambit, Zaitsev system8828.4%51.7%
A58Benko gambit accepted89531.2%55.6%
A58Benko gambit, Nd2 variation1631.3%46.9%
A58Benko gambit, fianchetto variation39929.8%55.3%
A59Benko gambit8632.6%64.0%
A59Benko gambit, 7.e41631.3%65.6%
A59Benko gambit, Ne2 variation1428.6%64.3%
A59Benko gambit, main line111134.9%63.3%
A60Benoni defence28428.9%52.5%
A61Benoni defence76325.3%58.3%
A61Benoni, Nimzovich (knight's tour) variation78726.6%57.5%
A61Benoni, Uhlmann variation11229.5%51.3%
A61Benoni, fianchetto variation7526.7%56.0%
A62Benoni, fianchetto variation219024.1%55.5%
A63Benoni, fianchetto, 9...Nbd716627.1%57.5%
A64Benoni, fianchetto, 11...Re820125.4%52.0%
A65Benoni, 6.e422225.7%60.6%
A66Benoni, Mikenas variation540.0%60.0%
A66Benoni, pawn storm variation1050.0%55.0%
A67Benoni, Taimanov variation71319.1%56.7%
A68Benoni, four pawns attack150.0%40.0%
A69Benoni, four pawns attack, main line9831.6%42.3%
A70Benoni, classical with e4 and Nf3191325.9%59.4%
A70Benoni, classical without 9.O-O1020.0%80.0%
A71Benoni, classical, 8.Bg513826.1%53.6%
A72Benoni, classical without 9.O-O13629.4%59.6%
A73Benoni, classical, 9.O-O35024.3%53.9%
A74Benoni, classical, 9...a6, 10.a43534.3%54.3%
A75Benoni, classical with ...a6 and 10...Bg421429.0%55.1%
A76Benoni, classical, 9...Re814715.6%59.5%
A77Benoni, classical, 9...Re8, 10.Nd244823.9%56.8%
A78Benoni, classical with ...Re8 and ...Na69134.1%54.4%
A79Benoni, classical, 11.f323819.7%67.0%
A80Dutch1177326.4%54.3%
A80Dutch, 2.Bg5 variation363723.6%53.9%
A80Dutch, Korchnoi attack15529.0%55.2%
A80Dutch, Krejcik gambit34230.1%46.1%
A80Dutch, Manhattan (Alapin, Ulvestad) variation20326.6%49.8%
A80Dutch, Spielmann gambit812.5%18.8%
A80Dutch, Von Pretzel gambit1225.0%45.8%
A81Dutch defence843128.9%55.8%
A81Dutch defence, Blackburne variation10935.8%61.9%
A81Dutch, Leningrad, Karlsbad variation1631.3%59.4%
A82Dutch, Balogh defence2326.1%47.8%
A82Dutch, Staunton gambit20131.3%41.5%
A82Dutch, Staunton gambit, Tartakower variation2218.2%50.0%
A83Dutch, Staunton gambit, Alekhine variation1931.6%63.2%
A83Dutch, Staunton gambit, Chigorin variation6934.8%65.2%
A83Dutch, Staunton gambit, Lasker variation1323.1%50.0%
A83Dutch, Staunton gambit, Nimzovich variation714.3%50.0%
A83Dutch, Staunton gambit, Staunton's line27126.9%47.0%
A84Dutch defence207127.2%55.9%
A84Dutch defence, Rubinstein variation85629.3%55.5%
A84Dutch, Staunton gambit deferred2035.0%42.5%
A85Dutch with c4 & Nc384230.8%55.3%
A86Dutch with c4 & g327628.3%59.8%
A86Dutch, Hort-Antoshin system616.7%75.0%
A86Dutch, Leningrad variation24229.8%59.5%
A87Dutch, Leningrad, main variation95027.7%59.6%
A88Dutch, Leningrad, main variation with c6267030.6%56.6%
A89Dutch, Leningrad, main variation with Nc6192527.5%57.8%
A90Dutch defence217026.1%56.0%
A90Dutch defence, Dutch-Indian (Nimzo-Dutch) variation54127.4%61.6%
A90Dutch-Indian, Alekhine variation12931.0%51.9%
A91Dutch defence24733.6%53.2%
A92Dutch defence14330.8%58.7%
A92Dutch defence, Alekhine variation12830.5%57.4%
A92Dutch, stonewall variation35927.0%58.9%
A92Dutch, stonewall with Nc39630.2%57.8%
A93Dutch, stonewall, Botwinnik variation27828.1%59.4%
A94Dutch, stonewall with Ba319035.8%54.2%
A95Dutch, stonewall with Nc349026.5%54.7%
A95Dutch, stonewall: Chekhover variation5036.0%56.0%
A96Dutch, classical variation58831.1%61.3%
A97Dutch, Ilyin-Genevsky variation5930.5%64.4%
A97Dutch, Ilyin-Genevsky, Winter variation19334.7%64.0%
A98Dutch, Ilyin-Genevsky variation with Qc219726.4%60.4%
A99Dutch, Ilyin-Genevsky variation with b352224.9%59.0%
B00Barnes defence2025.0%62.5%
B00Carr's defence6323.8%54.8%
B00Corn stalk defence1338.5%80.8%
B00Fred147.1%67.9%
B00Guatemala defence10.0%100.0%
B00KP, Colorado counter4418.2%52.3%
B00KP, Nimzovich defence357625.2%57.5%
B00KP, Nimzovich defence, Bogolyubov variation36121.9%57.8%
B00KP, Nimzovich defence, Marshall gambit616.7%41.7%
B00King's pawn opening429127.0%53.4%
B00Lemming defence250.0%75.0%
B00Owen defence100727.2%56.6%
B00Reversed Grob (Borg/Basman defence/macho Grob)23523.8%53.6%
B00St. George (Baker) defence20522.0%53.4%
B01Scandinavian (centre counter) defence730127.5%59.6%
B01Scandinavian defence229730.6%56.8%
B01Scandinavian defence, Gruenfeld variation1942.1%57.9%
B01Scandinavian defence, Lasker variation16427.4%63.7%
B01Scandinavian gambit22330.0%47.3%
B01Scandinavian, Anderssen counter-attack333.3%83.3%
B01Scandinavian, Anderssen counter-attack, Goteborg system50.0%100.0%
B01Scandinavian, Icelandic gambit9632.3%51.6%
B01Scandinavian, Kiel variation1127.3%68.2%
B01Scandinavian, Marshall variation124128.5%58.9%
B01Scandinavian, Mieses-Kotrvc gambit3411.8%52.9%
B01Scandinavian, Pytel-Wade variation455131.8%59.5%
B01Scandinavian, Richter variation2725.9%61.1%
B02Alekhine's defence80434.0%55.4%
B02Alekhine's defence, Brooklyn defence10223.5%61.8%
B02Alekhine's defence, Kmoch variation1225.0%45.8%
B02Alekhine's defence, Krejcik variation4032.5%36.3%
B02Alekhine's defence, Maroczy variation38425.5%49.2%
B02Alekhine's defence, Mokele Mbembe (Buecker) variation2924.1%63.8%
B02Alekhine's defence, Saemisch attack41725.4%57.3%
B02Alekhine's defence, Scandinavian variation65928.2%55.7%
B02Alekhine's defence, Spielmann variation3030.0%51.7%
B02Alekhine's defence, Steiner variation1816.7%52.8%
B02Alekhine's defence, Two pawns' (Lasker's) attack18640.9%48.9%
B02Alekhine's defence, Two pawns' attack, Mikenas variation1020.0%60.0%
B02Alekhine's defence, Welling variation6822.1%47.8%
B03Alekhine's defence90225.3%53.8%
B03Alekhine's defence, Balogh variation8124.7%55.6%
B03Alekhine's defence, O'Sullivan gambit166.3%59.4%
B03Alekhine's defence, exchange variation106730.1%58.8%
B03Alekhine's defence, exchange, Karpov variation540.0%40.0%
B03Alekhine's defence, four pawns attack10032.0%59.0%
B03Alekhine's defence, four pawns attack, 6...Nc618423.4%50.3%
B03Alekhine's defence, four pawns attack, 7.Be326928.6%64.9%
B03Alekhine's defence, four pawns attack, Ilyin-Genevsky var.333.3%50.0%
B03Alekhine's defence, four pawns attack, Planinc variation922.2%88.9%
B03Alekhine's defence, four pawns attack, Tartakower variation520.0%70.0%
B03Alekhine's defence, four pawns attack, Trifunovic variation7925.3%64.6%
B03Alekhine's defence, four pawns attack, fianchetto variation6035.0%60.8%
B04Alekhine's defence, modern variation47225.0%60.8%
B04Alekhine's defence, modern, Keres variation24735.6%61.9%
B04Alekhine's defence, modern, Larsen variation166132.2%57.3%
B04Alekhine's defence, modern, Schmid variation15129.1%64.2%
B04Alekhine's defence, modern, fianchetto variation115531.1%54.8%
B05Alekhine's defence, modern variation, 4...Bg4112030.6%63.8%
B05Alekhine's defence, modern, Alekhine variation650.0%58.3%
B05Alekhine's defence, modern, Flohr variation51529.1%64.1%
B05Alekhine's defence, modern, Panov variation2630.8%65.4%
B05Alekhine's defence, modern, Vitolins attack1822.2%38.9%
B06Norwegian defence425.0%62.5%
B06Robatsch (modern) defence1295728.9%56.1%
B06Robatsch defence175729.0%58.8%
B06Robatsch defence, Gurgenidze variation148820.6%64.4%
B06Robatsch defence, Pseudo-Austrian attack130725.0%58.0%
B06Robatsch defence, Two knights variation65530.4%58.2%
B06Robatsch defence, Two knights, Suttles variation254034.2%58.3%
B06Robatsch defence, three pawns attack14518.6%54.8%
B07Pirc defence404225.0%54.4%
B07Pirc, 150 attack95226.9%54.5%
B07Pirc, Byrne variation52125.3%55.9%
B07Pirc, Chinese variation40.0%50.0%
B07Pirc, Holmov system6331.7%50.8%
B07Pirc, Sveshnikov system179826.9%53.3%
B07Pirc, Ufimtsev-Pytel variation115725.2%56.4%
B07Pirc, bayonet (Mariotti) attack6520.0%54.6%
B07Robatsch defence, Geller's system164429.9%56.7%
B08Pirc, classical (two knights) system108328.0%56.4%
B08Pirc, classical system, 5.Be2567731.6%58.3%
B08Pirc, classical, h3 system73529.5%56.0%
B09Pirc, Austrian attack91627.4%59.4%
B09Pirc, Austrian attack, 6.Bd3489230.4%57.7%
B09Pirc, Austrian attack, 6.Be397024.7%56.4%
B09Pirc, Austrian attack, 6.e531628.8%59.7%
B09Pirc, Austrian attack, Ljubojevic variation2025.0%62.5%
B09Pirc, Austrian attack, dragon formation156230.7%54.0%
B10Caro-Kann defence816426.8%53.4%
B10Caro-Kann, Goldman (Spielmann) variation19022.1%49.5%
B10Caro-Kann, Hillbilly attack3735.1%58.1%
B10Caro-Kann, Two knights variation116327.6%55.9%
B10Caro-Kann, anti-Caro-Kann defence167928.2%56.5%
B10Caro-Kann, anti-anti-Caro-Kann defence312433.4%52.2%
B10Caro-Kann, closed (Breyer) variation291325.8%50.2%
B11Caro-Kann, Two knights, 3...Bg4228524.3%53.6%
B12Caro-Kann defence220822.8%56.9%
B12Caro-Kann, 3.Nd260526.8%58.8%
B12Caro-Kann, Edinburgh variation7722.1%65.6%
B12Caro-Kann, Tartakower (fantasy) variation145627.5%55.0%
B12Caro-Kann, advance variation2834825.0%54.6%
B12Caro-Kann, advance, Short variation10619.8%65.6%
B12Caro-Masi defence1414.3%50.0%
B12de Bruycker defence6530.8%58.5%
B13Caro-Kann, Panov-Botvinnik attack215633.6%54.1%
B13Caro-Kann, Panov-Botvinnik, Czerniak variation4744.7%60.6%
B13Caro-Kann, Panov-Botvinnik, Gunderam attack1435.7%53.6%
B13Caro-Kann, Panov-Botvinnik, Herzog defence3132.3%54.8%
B13Caro-Kann, Panov-Botvinnik, Reifir (Spielmann) variation1030.0%55.0%
B13Caro-Kann, Panov-Botvinnik, normal variation28437.0%48.4%
B13Caro-Kann, exchange variation129928.9%50.7%
B13Caro-Kann, exchange, Rubinstein variation25634.0%53.7%
B14Caro-Kann, Panov-Botvinnik attack, 5...e6957034.8%55.2%
B14Caro-Kann, Panov-Botvinnik attack, 5...g650238.2%53.8%
B15Caro-Kann defence73525.0%50.6%
B15Caro-Kann, Alekhine gambit3650.0%55.6%
B15Caro-Kann, Forgacs variation13937.4%53.2%
B15Caro-Kann, Gurgenidze counter-attack4613.0%56.5%
B15Caro-Kann, Gurgenidze system66829.8%56.8%
B15Caro-Kann, Rasa-Studier gambit2920.7%44.8%
B15Caro-Kann, Tartakower (Nimzovich) variation250434.6%52.6%
B16Caro-Kann, Bronstein-Larsen variation92423.4%62.0%
B17Caro-Kann, Steinitz variation585429.4%53.9%
B18Caro-Kann, classical variation229430.1%54.4%
B18Caro-Kann, classical, 6.h4347832.3%54.3%
B18Caro-Kann, classical, Flohr variation11235.7%59.8%
B18Caro-Kann, classical, Maroczy attack955.6%61.1%
B19Caro-Kann, classical, 7...Nd798226.6%51.8%
B19Caro-Kann, classical, Spassky variation1054428.5%57.5%
B20Sicilian defence949726.0%49.1%
B20Sicilian, Gloria variation1921.1%52.6%
B20Sicilian, Keres variation (2.Ne2)161127.6%53.2%
B20Sicilian, Steinitz variation154527.1%53.9%
B20Sicilian, wing gambit16526.1%45.8%
B20Sicilian, wing gambit, Carlsbad variation6327.0%54.8%
B20Sicilian, wing gambit, Marienbad variation30.0%33.3%
B20Sicilian, wing gambit, Marshall variation77228.0%39.0%
B20Sicilian, wing gambit, Santasiere variation250.0%75.0%
B21Sicilian, Andreaschek gambit1942.1%57.9%
B21Sicilian, Grand Prix attack312026.2%49.2%
B21Sicilian, Smith-Morra gambit153428.8%50.3%
B22Sicilian, 2.c3, Heidenfeld variation5728.1%43.9%
B22Sicilian, Alapin's variation (2.c3)2226032.7%54.2%
B23Sicilian, Grand Prix attack69626.0%52.5%
B23Sicilian, Grand Prix attack, Schofman variation1827.8%30.6%
B23Sicilian, chameleon variation196728.0%55.4%
B23Sicilian, closed782927.9%53.3%
B23Sicilian, closed, 2...Nc6463928.3%52.9%
B23Sicilian, closed, Korchnoi variation60029.7%48.3%
B24Sicilian, closed78827.7%49.1%
B24Sicilian, closed, Smyslov variation1533.3%70.0%
B25Sicilian, closed31830.8%51.3%
B25Sicilian, closed, 6.Ne2 e5 (Botvinnik)10520.0%52.9%
B25Sicilian, closed, 6.f4113329.0%50.4%
B25Sicilian, closed, 6.f4 e5 (Botvinnik)17726.6%46.6%
B26Sicilian, closed, 6.Be367525.3%47.9%
B27Sicilian defence14431.3%59.4%
B27Sicilian, Acton extension1323.1%57.7%
B27Sicilian, Hungarian variation1083033.6%57.2%
B27Sicilian, Katalimov variation21324.9%55.2%
B27Sicilian, Quinteros variation11219.6%58.0%
B27Sicilian, Stiletto (Althouse) variation2433.3%62.5%
B28Sicilian, O'Kelly variation129328.2%55.9%
B29Sicilian, Nimzovich-Rubinstein variation83529.8%55.3%
B29Sicilian, Nimzovich-Rubinstein; Rubinstein counter-gambit7636.8%57.9%
B30Sicilian defence551829.8%51.8%
B30Sicilian, Nimzovich-Rossolimo attack (without ...d6)868129.4%54.9%
B31Sicilian, Nimzovich-Rossolimo attack (with ...g6, without ...d6)511729.6%55.8%
B31Sicilian, Nimzovich-Rossolimo attack, Gurgenidze variation2128.6%47.6%
B32Sicilian defence124929.5%51.4%
B32Sicilian, Flohr variation16729.3%58.4%
B32Sicilian, Labourdonnais-Loewenthal (Kalashnikov) variation215729.3%54.5%
B32Sicilian, Labourdonnais-Loewenthal variation43530.8%52.6%
B32Sicilian, Nimzovich variation3218.8%50.0%
B33Sicilian defence130829.2%53.3%
B33Sicilian, Pelikan (Lasker/Sveshnikov) variation138424.9%53.6%
B33Sicilian, Pelikan, Bird variation41926.3%59.7%
B33Sicilian, Pelikan, Chelyabinsk variation642727.6%55.6%
B33Sicilian, Sveshnikov variation346127.4%53.1%
B34Sicilian, accelerated fianchetto, exchange variation3435.3%44.1%
B34Sicilian, accelerated fianchetto, modern variation168832.5%51.3%
B35Sicilian, accelerated fianchetto, modern variation with Bc4557734.1%53.9%
B36Sicilian, accelerated fianchetto, Gurgenidze variation38938.3%54.4%
B36Sicilian, accelerated fianchetto, Maroczy bind148035.3%55.8%
B37Sicilian, accelerated fianchetto, Maroczy bind, 5...Bg734735.4%52.6%
B37Sicilian, accelerated fianchetto, Simagin variation1030.0%45.0%
B38Sicilian, accelerated fianchetto, Maroczy bind, 6.Be3297238.7%57.2%
B39Sicilian, accelerated fianchetto, Breyer variation152433.3%60.9%
B40Sicilian defence1178330.0%52.7%
B40Sicilian, Anderssen variation284731.9%55.7%
B40Sicilian, Marshall variation3125.8%45.2%
B40Sicilian, Pin variation (Sicilian counter-attack)18123.8%52.2%
B40Sicilian, Pin, Jaffe variation812.5%56.3%
B40Sicilian, Pin, Koch variation21122.3%71.8%
B41Sicilian, Kan variation31128.9%54.7%
B41Sicilian, Kan, Maroczy bind (Reti variation)126230.0%56.1%
B41Sicilian, Kan, Maroczy bind - Bronstein variation6127.9%54.9%
B42Sicilian, Kan, 5.Bd3516529.8%56.8%
B42Sicilian, Kan, Gipslis variation19728.9%57.1%
B42Sicilian, Kan, Polugaievsky variation317626.9%54.4%
B42Sicilian, Kan, Swiss cheese variation32727.2%56.7%
B43Sicilian, Kan, 5.Nc3821629.2%55.0%
B44Sicilian defence45329.4%52.9%
B44Sicilian, Szen (`anti-Taimanov') variation105531.9%51.2%
B44Sicilian, Szen variation, Dely-Kasparov gambit2642.3%51.9%
B44Sicilian, Szen, hedgehog variation42530.4%48.4%
B45Sicilian, Taimanov variation592427.8%54.6%
B45Sicilian, Taimanov, American attack2356.5%45.7%
B46Sicilian, Taimanov variation597529.1%54.9%
B47Sicilian, Taimanov (Bastrikov) variation1175231.0%54.6%
B48Sicilian, Taimanov variation796328.3%54.1%
B49Sicilian, Taimanov variation334432.3%56.0%
B50Sicilian727128.9%52.2%
B50Sicilian, wing gambit deferred4827.1%49.0%
B51Sicilian, Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack370030.0%56.2%
B52Sicilian, Canal-Sokolsky attack, 3...Bd7222435.0%51.1%
B52Sicilian, Canal-Sokolsky attack, Bronstein gambit17327.2%43.6%
B52Sicilian, Canal-Sokolsky attack, Sokolsky variation175833.6%53.4%
B53Sicilian, Chekhover variation133036.9%50.3%
B53Sicilian, Chekhover, Zaitsev variation6524.6%50.8%
B54Sicilian134727.8%53.6%
B54Sicilian, Prins (Moscow) variation53431.5%52.4%
B55Sicilian, Prins variation, Venice attack13437.3%56.7%
B56Sicilian557426.5%54.4%
B56Sicilian, Venice attack67934.5%62.6%
B57Sicilian, Magnus Smith trap4327.9%53.5%
B57Sicilian, Sozin, Benko variation535329.6%51.1%
B57Sicilian, Sozin, not Scheveningen60030.0%54.5%
B58Sicilian, Boleslavsky variation90033.3%49.1%
B58Sicilian, Boleslavsky, Louma variation4827.1%55.2%
B58Sicilian, classical76435.2%51.4%
B59Sicilian, Boleslavsky variation, 7.Nb316339.3%54.6%
B60Sicilian, Richter-Rauzer195427.0%56.4%
B60Sicilian, Richter-Rauzer, Bondarevsky variation2937.9%53.4%
B60Sicilian, Richter-Rauzer, Larsen variation36525.2%54.2%
B61Sicilian, Richter-Rauzer, Larsen variation, 7.Qd263728.6%60.4%
B62Sicilian, Richter-Rauzer, 6...e619026.3%48.4%
B62Sicilian, Richter-Rauzer, Keres variation56431.0%53.8%
B62Sicilian, Richter-Rauzer, Margate (Alekhine) variation54532.7%50.1%
B62Sicilian, Richter-Rauzer, Podvebrady variation4334.9%52.3%
B62Sicilian, Richter-Rauzer, Richter attack20.0%50.0%
B63Sicilian, Richter-Rauzer, Rauzer attack51127.2%57.2%
B63Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7230228.5%52.2%
B64Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9.f465933.7%54.6%
B64Sicilian, Richter-Rauzer, Rauzer attack, Geller variation293.4%74.1%
B65Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9...Nxd4157930.7%56.9%
B66Sicilian, Richter-Rauzer, Rauzer attack, 7...a61625124.9%51.4%
B67Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 8...Bd7787325.3%52.5%
B68Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 9...Be726227.9%55.2%
B69Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 11.Bxf655326.0%56.2%
B70Sicilian, dragon variation85530.6%50.3%
B71Sicilian, dragon, Levenfish variation11239.3%47.3%
B71Sicilian, dragon, Levenfish; Flohr variation1010.0%55.0%
B72Sicilian, dragon, 6.Be329327.6%51.4%
B72Sicilian, dragon, classical attack11432.5%54.8%
B72Sicilian, dragon, classical, Amsterdam variation6439.1%44.5%
B72Sicilian, dragon, classical, Grigoriev variation1250.0%66.7%
B72Sicilian, dragon, classical, Nottingham variation9530.5%45.8%
B73Sicilian, dragon, classical, 8.O-O25538.4%55.3%
B73Sicilian, dragon, classical, Richter variation23735.0%50.0%
B73Sicilian, dragon, classical, Zollner gambit2231.8%20.5%
B74Sicilian, dragon, classical, 9.Nb330238.4%50.0%
B74Sicilian, dragon, classical, Alekhine variation3622.2%63.9%
B74Sicilian, dragon, classical, Reti-Tartakower variation20634.5%52.7%
B74Sicilian, dragon, classical, Spielmann variation6628.8%53.8%
B75Sicilian, dragon, Yugoslav attack42528.9%53.1%
B76Sicilian, dragon, Yugoslav attack, 7...O-O65329.4%52.2%
B76Sicilian, dragon, Yugoslav attack, Rauser variation155327.0%59.6%
B77Sicilian, dragon, Yugoslav attack, 9...Bd747125.7%55.3%
B77Sicilian, dragon, Yugoslav attack, 9.Bc49828.6%53.1%
B77Sicilian, dragon, Yugoslav attack, Byrne variation616.7%75.0%
B78Sicilian, dragon, Yugoslav attack, 10.O-O-O124424.5%54.3%
B79Sicilian, dragon, Yugoslav attack, 12.h414630.8%64.0%
B80Sicilian, Scheveningen variation146023.8%53.6%
B80Sicilian, Scheveningen, English variation69225.9%51.2%
B80Sicilian, Scheveningen, Vitolins variation12218.0%45.9%
B80Sicilian, Scheveningen, fianchetto variation54528.3%51.4%
B81Sicilian, Scheveningen, Keres attack503525.9%58.8%
B82Sicilian, Scheveningen, 6.f483229.7%55.8%
B82Sicilian, Scheveningen, Tal variation20019.5%59.8%
B83Sicilian, Scheveningen, 6.Be287230.2%51.2%
B83Sicilian, modern Scheveningen91830.5%50.2%
B83Sicilian, modern Scheveningen, main line74536.6%52.8%
B83Sicilian, modern Scheveningen, main line with Nb316724.6%50.0%
B84Sicilian, Scheveningen (Paulsen), classical variation1060629.6%52.0%
B84Sicilian, Scheveningen, classical, Nd7 system10426.9%54.8%
B85Sicilian, Scheveningen, classical25838.8%52.7%
B85Sicilian, Scheveningen, classical main line76840.1%54.4%
B85Sicilian, Scheveningen, classical variation with ...Qc7 and ...Nc62321.7%50.0%
B85Sicilian, Scheveningen, classical, Maroczy system6833.8%55.1%
B86Sicilian, Sozin attack28227.0%46.5%
B87Sicilian, Sozin with ...a6 and ...b5140827.9%48.4%
B88Sicilian, Sozin, Fischer variation4250.0%51.2%
B88Sicilian, Sozin, Leonhardt variation73234.0%49.7%
B89Sicilian, Sozin, 7.Be3446127.1%49.1%
B89Sicilian, Velimirovic attack176424.7%50.9%
B90Sicilian, Najdorf1448925.0%51.2%
B90Sicilian, Najdorf, Adams attack349024.4%52.6%
B90Sicilian, Najdorf, Byrne (English) attack5465725.2%51.4%
B90Sicilian, Najdorf, Lipnitzky attack253029.0%48.8%
B91Sicilian, Najdorf, Zagreb (fianchetto) variation155527.9%51.3%
B92Sicilian, Najdorf, Opovcensky variation1306530.3%52.5%
B93Sicilian, Najdorf, 6.f4270429.7%49.7%
B94Sicilian, Najdorf, 6.Bg5192425.8%53.6%
B95Sicilian, Najdorf, 6...e6217227.4%54.4%
B96Sicilian, Najdorf, 7.f4250423.8%49.7%
B96Sicilian, Najdorf, Polugayevsky variation14026.4%52.5%
B96Sicilian, Najdorf, Polugayevsky, Simagin variation4619.6%51.1%
B97Sicilian, Najdorf, 7...Qb6326824.8%47.4%
B97Sicilian, Najdorf, Poisoned pawn variation369827.7%44.4%
B98Sicilian, Najdorf variation22625.7%50.0%
B98Sicilian, Najdorf, 7...Be729325.6%53.8%
B98Sicilian, Najdorf, Browne variation9732.0%58.2%
B98Sicilian, Najdorf, Goteborg (Argentine) variation1435.7%46.4%
B99Sicilian, Najdorf, 7...Be7 main line177522.5%54.4%
C00French defence491225.4%53.7%
C00French defence, Steiner variation131628.5%49.9%
C00French, Alapin variation6521.5%46.2%
C00French, Chigorin variation422126.5%51.2%
C00French, King's Indian attack860628.7%51.1%
C00French, Labourdonnais variation75126.0%49.5%
C00French, Pelikan variation10029.0%49.5%
C00French, Reti (Spielmann) variation38425.3%53.8%
C00French, Reversed Philidor formation8229.3%40.2%
C00French, Schlechter variation55331.5%51.5%
C00French, Steinitz attack5942.4%53.4%
C00French, Two knights variation148226.2%51.3%
C00French, Wing gambit7316.4%45.2%
C00Lengfellner system11830.5%61.0%
C00St. George defence80828.0%54.8%
C01French, exchange variation254533.0%53.3%
C01French, exchange, Bogolyubov variation1216.7%41.7%
C01French, exchange, Svenonius variation7536.0%56.7%
C02French, advance variation232325.8%53.4%
C02French, advance, Euwe variation511226.2%53.0%
C02French, advance, Milner-Barry gambit13524.4%53.7%
C02French, advance, Nimzovich system36721.0%47.8%
C02French, advance, Nimzovich variation5827.6%31.0%
C02French, advance, Paulsen attack290326.2%53.3%
C02French, advance, Steinitz variation94127.2%50.8%
C02French, advance, Wade variation41828.0%55.1%
C03French, Tarrasch348030.3%56.8%
C03French, Tarrasch, Guimard variation28926.6%59.7%
C03French, Tarrasch, Haberditz variation1910.5%63.2%
C04French, Tarrasch, Guimard main line53526.4%56.5%
C05French, Tarrasch, Botvinnik variation15823.4%57.3%
C05French, Tarrasch, closed variation216424.8%57.2%
C06French, Tarrasch, Leningrad variation5217.3%54.8%
C06French, Tarrasch, closed variation, main line298232.4%55.5%
C07French, Tarrasch, Eliskases variation19238.0%54.4%
C07French, Tarrasch, open variation756533.4%52.9%
C08French, Tarrasch, open, 4.ed ed501740.1%53.8%
C09French, Tarrasch, open variation, main line229937.4%56.0%
C10French, Fort Knox variation48934.2%53.9%
C10French, Frere (Becker) variation6429.7%57.0%
C10French, Marshall variation1435.7%67.9%
C10French, Paulsen variation191127.6%55.7%
C10French, Rubinstein variation1107634.2%53.6%
C10French, Rubinstein, Capablanca line2236.4%54.5%
C11French defence67726.6%49.8%
C11French, Burn variation1078431.5%52.1%
C11French, Henneberger variation3336.4%36.4%
C11French, Steinitz variation214926.9%55.2%
C11French, Steinitz, Boleslavsky variation940327.0%54.7%
C11French, Steinitz, Bradford attack30.0%33.3%
C11French, Steinitz, Gledhill attack5438.9%52.8%
C11French, Swiss variation15232.2%44.4%
C12French, MacCutcheon variation31530.5%51.7%
C12French, MacCutcheon, Bernstein variation2814.3%53.6%
C12French, MacCutcheon, Bogolyubov variation616.7%75.0%
C12French, MacCutcheon, Chigorin variation5534.5%51.8%
C12French, MacCutcheon, Dr. Olland (Dutch) variation4129.3%53.7%
C12French, MacCutcheon, Duras variation366.7%66.7%
C12French, MacCutcheon, Grigoriev variation955.6%50.0%
C12French, MacCutcheon, Janowski variation18225.3%58.8%
C12French, MacCutcheon, Lasker variation51920.6%52.5%
C12French, MacCutcheon, Lasker variation, 8...g682425.1%55.0%
C12French, MacCutcheon, Tartakower variation450.0%50.0%
C12French, MacCutcheon, advance variation1241.7%54.2%
C13French, Albin-Alekhine-Chatard attack65320.4%56.4%
C13French, Albin-Alekhine-Chatard attack, Breyer variation9926.3%55.6%
C13French, Albin-Alekhine-Chatard attack, Maroczy variation1030.0%35.0%
C13French, Albin-Alekhine-Chatard attack, Spielmann variation7031.4%57.1%
C13French, Albin-Alekhine-Chatard attack, Teichmann variation922.2%88.9%
C13French, classical2714.8%51.9%
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 variation2825.0%51.8%
C13French, classical, Vistaneckis (Nimzovich) variation616.7%58.3%
C14French, classical variation2718.5%27.8%
C14French, classical, Alapin variation9838.8%59.2%
C14French, classical, Pollock variation1717.6%44.1%
C14French, classical, Rubinstein variation5621.4%55.4%
C14French, classical, Stahlberg variation450.0%75.0%
C14French, classical, Steinitz variation103827.4%58.2%
C14French, classical, Tarrasch variation850.0%62.5%
C15French, Winawer (Nimzovich) variation156833.1%53.7%
C15French, Winawer, Alekhine (Maroczy) gambit52630.6%57.7%
C15French, Winawer, Alekhine gambit100.0%50.0%
C15French, Winawer, Alekhine gambit, Alatortsev variation1100.0%50.0%
C15French, Winawer, Alekhine gambit, Kan variation20334.0%49.0%
C15French, Winawer, Kondratiyev variation1637.5%62.5%
C15French, Winawer, fingerslip variation6221.0%55.6%
C16French, Winawer, Petrosian variation43724.9%53.7%
C16French, Winawer, advance variation133225.3%56.3%
C17French, Winawer, advance variation11126.1%59.9%
C17French, Winawer, advance, 5.a380025.4%57.4%
C17French, Winawer, advance, Bogolyubov variation33629.8%56.0%
C17French, Winawer, advance, Rauzer variation955.6%50.0%
C17French, Winawer, advance, Russian variation8228.0%50.6%
C18French, Winawer, advance variation86921.1%58.3%
C18French, Winawer, classical variation82721.3%56.6%
C19French, Winawer, advance, 6...Ne7101525.7%60.8%
C19French, Winawer, advance, Smyslov variation27125.8%59.0%
C19French, Winawer, advance, poisoned pawn variation532024.3%59.1%
C19French, Winawer, advance, poisoned pawn, Euwe-Gligoric variation1450.0%53.6%
C19French, Winawer, advance, poisoned pawn, Konstantinopolsky variation141625.6%60.5%
C19French, Winawer, advance, positional main line291123.6%57.7%
C20Alapin's opening13525.2%51.1%
C20KP, Indian opening33330.0%50.5%
C20KP, King's head opening1735.3%58.8%
C20KP, Lopez opening6835.3%45.6%
C20KP, Mengarini's opening9522.1%56.3%
C20KP, Napoleon's opening1741.2%50.0%
C20KP, Patzer opening6826.5%48.5%
C20King's pawn game34924.4%51.4%
C21Centre game40831.9%54.7%
C21Danish gambit11038.2%50.9%
C21Danish gambit, Collijn defence40.0%50.0%
C21Danish gambit, Schlechter defence425.0%37.5%
C21Danish gambit, Soerensen defence7437.8%50.0%
C21Halasz gambit8035.0%38.8%
C22Centre game5621.4%53.6%
C22Centre game, Berger variation43626.4%53.3%
C22Centre game, Charousek variation1118.2%45.5%
C22Centre game, Hall variation1833.3%44.4%
C22Centre game, Paulsen attack21835.3%49.3%
C22Centre game, l'Hermet variation450.0%75.0%
C23Bishop's opening52226.2%51.6%
C23Bishop's opening, Calabrese counter-gambit333.3%16.7%
C23Bishop's opening, Calabrese counter-gambit, Jaenisch variation1711.8%64.7%
C23Bishop's opening, Classical variation15621.8%48.1%
C23Bishop's opening, Lewis counter-gambit633.3%50.0%
C23Bishop's opening, Lewis gambit933.3%38.9%
C23Bishop's opening, Lisitsyn variation1100.0%50.0%
C23Bishop's opening, Philidor counter-attack15333.3%57.8%
C23Bishop's opening, Philidor variation2123.8%54.8%
C23Bishop's opening, Wing gambit425.0%87.5%
C24Bishop's opening, Berlin defence214329.2%52.6%
C24Bishop's opening, Ponziani gambit3225.0%37.5%
C24Bishop's opening, Urusov gambit4330.2%45.3%
C24Bishop's opening, Urusov gambit, Panov variation812.5%56.3%
C25Vienna gambit14225.4%52.1%
C25Vienna game94325.6%53.3%
C25Vienna game, Max Lange defence12120.7%50.8%
C25Vienna, Hamppe-Allgaier gambit520.0%30.0%
C25Vienna, Paulsen variation116923.3%51.6%
C25Vienna, Pierce gambit2814.3%42.9%
C25Vienna, Steinitz gambit540.0%60.0%
C25Vienna, Steinitz gambit, Fraser-Minckwitz variation1020.0%40.0%
C25Vienna, Steinitz gambit, Zukertort defence1100.0%50.0%
C26Vienna game51328.7%52.5%
C26Vienna, Falkbeer variation18522.2%52.7%
C26Vienna, Mengarini variation5036.0%54.0%
C26Vienna, Paulsen-Mieses variation169330.8%50.8%
C27Boden-Kieseritsky gambit6619.7%47.7%
C27Boden-Kieseritsky gambit, Lichtenhein defence1233.3%41.7%
C27Vienna game45826.9%50.5%
C27Vienna, Alekhine variation19228.1%44.3%
C27Vienna, `Frankenstein-Dracula' variation4226.2%56.0%
C28Vienna game48332.1%50.2%
C29Vienna gambit46030.4%47.2%
C29Vienna gambit, Bardeleben variation1631.3%34.4%
C29Vienna gambit, Breyer variation21733.2%54.4%
C29Vienna gambit, Heyde variation10.0%0.0%
C29Vienna gambit, Kaufmann variation1338.5%65.4%
C29Vienna gambit, Paulsen attack5337.7%54.7%
C29Vienna gambit, Steinitz variation4027.5%48.8%
C30KGD, 2...Nf68923.6%51.1%
C30KGD, Keene's defence10024.0%54.0%
C30KGD, Mafia defence14825.7%63.5%
C30KGD, Norwalde variation2030.0%50.0%
C30KGD, classical counter-gambit1816.7%52.8%
C30KGD, classical variation33225.3%48.5%
C30KGD, classical, 4.c332026.9%55.6%
C30KGD, classical, Hanham variation450.0%25.0%
C30KGD, classical, Heath variation1533.3%36.7%
C30KGD, classical, Marshall attack1540.0%46.7%
C30KGD, classical, Reti variation616.7%75.0%
C30KGD, classical, Soldatenkov variation2133.3%50.0%
C30KGD, classical, Svenonius variation520.0%50.0%
C30King's gambit31025.2%54.5%
C31KGD, Falkbeer counter-gambit16224.1%46.0%
C31KGD, Falkbeer, 3...e42825.0%48.2%
C31KGD, Falkbeer, 4.d32343.5%60.9%
C31KGD, Falkbeer, Morphy gambit1338.5%65.4%
C31KGD, Falkbeer, Nimzovich variation119.1%31.8%
C31KGD, Falkbeer, Rubinstein variation1030.0%35.0%
C31KGD, Falkbeer, Tartakower variation2733.3%72.2%
C31KGD, Nimzovich counter-gambit14127.7%50.0%
C32KGD, Falkbeer, 5.de5431.5%50.9%
C32KGD, Falkbeer, Charousek gambit40.0%75.0%
C32KGD, Falkbeer, Charousek variation10.0%0.0%
C32KGD, Falkbeer, Keres variation1100.0%50.0%
C32KGD, Falkbeer, Reti variation2725.9%46.3%
C32KGD, Falkbeer, Tarrasch variation10.0%100.0%
C32KGD, Falkbeer, main line, 7...Bf51080.0%40.0%
C33KGA, Breyer gambit3132.3%38.7%
C33KGA, Carrera (Basman) gambit4332.6%41.9%
C33KGA, Keres (Mason-Steinitz) gambit6113.1%47.5%
C33KGA, Lesser bishop's (Petroff-Jaenisch-Tartakower) gambit258.0%40.0%
C33KGA, Lopez-Gianutio counter-gambit, Hein variation250.0%75.0%
C33KGA, Villemson (Steinitz) gambit1428.6%50.0%
C33KGA, bishop's gambit27322.0%51.3%
C33KGA, bishop's gambit, Anderssen variation714.3%78.6%
C33KGA, bishop's gambit, Bledow variation10335.9%47.1%
C33KGA, bishop's gambit, Boden defence1513.3%40.0%
C33KGA, bishop's gambit, Bogolyubov variation6923.2%47.8%
C33KGA, bishop's gambit, Boren-Svenonius variation30.0%66.7%
C33KGA, bishop's gambit, Bryan counter-gambit933.3%50.0%
C33KGA, bishop's gambit, Cozio (Morphy) defence5726.3%41.2%
C33KGA, bishop's gambit, Jaenisch variation19627.0%51.3%
C33KGA, bishop's gambit, Lopez-Gianutio counter-gambit3522.9%31.4%
C33KGA, bishop's gambit, Maurian defence4027.5%46.3%
C33KGA, bishop's gambit, McDonnell attack250.0%75.0%
C33KGA, bishop's gambit, Morphy variation13727.7%52.6%
C33KGA, bishop's gambit, Paulsen attack1827.8%41.7%
C33KGA, bishop's gambit, Ruy Lopez defence2821.4%57.1%
C33KGA, bishop's gambit, Steinitz defence13429.1%47.4%
C33KGA, bishop's gambit, classical defence1711.8%29.4%
C33King's gambit accepted1520.0%56.7%
C34KGA, Becker defence8618.6%46.5%
C34KGA, Bonsch-Osmolovsky variation9030.0%48.3%
C34KGA, Fischer defence34422.4%47.2%
C34KGA, Gianutio counter-gambit10.0%0.0%
C34KGA, Schallop defence17423.0%51.1%
C34King's knight's gambit10016.0%47.0%
C35KGA, Cunningham defence17521.1%49.4%
C35KGA, Cunningham, Bertin gambit20.0%50.0%
C35KGA, Cunningham, Euwe defence10234.3%48.5%
C36KGA, Abbazia defence (classical defence, modern defence[!])7328.8%51.4%
C36KGA, Abbazia defence, Botvinnik variation20.0%100.0%
C36KGA, Abbazia defence, modern variation34132.0%48.5%
C37KGA, Blachly gambit2619.2%28.8%
C37KGA, Ghulam Kassim gambit10.0%0.0%
C37KGA, King's knight's gambit933.3%50.0%
C37KGA, Lolli gambit (wild Muzio gambit)1100.0%50.0%
C37KGA, MacDonnell gambit250.0%75.0%
C37KGA, Muzio gambit128.3%12.5%
C37KGA, Quaade gambit2516.0%24.0%
C37KGA, Rosentreter gambit1145.5%50.0%
C37KGA, Salvio gambit1428.6%42.9%
C37KGA, Salvio gambit, Anderssen counter-attack40.0%25.0%
C37KGA, Silberschmidt gambit425.0%12.5%
C37KGA, double Muzio gambit10.0%0.0%
C38KGA, Hanstein gambit2524.0%40.0%
C38KGA, Philidor gambit60.0%33.3%
C38KGA, Philidor gambit, Schultz variation50.0%20.0%
C38King's knight's gambit1323.1%50.0%
C39KGA, Allgaier gambit10.0%100.0%
C39KGA, Kieseritsky, Berlin defence7518.7%38.7%
C39KGA, Kieseritsky, Berlin defence, 6.Bc47429.7%41.9%
C39KGA, Kieseritsky, Brentano (Campbell) defence20.0%100.0%
C39KGA, Kieseritsky, Kolisch defence15031.3%49.0%
C39KGA, Kieseritsky, Neumann defence119.1%59.1%
C39KGA, Kieseritsky, Paulsen defence540.0%40.0%
C39KGA, Kieseritsky, Rice gambit2250.0%25.0%
C39KGA, Kieseritsky, Salvio (Rosenthal) defence2450.0%54.2%
C39KGA, Kieseritsky, long whip (Stockwhip, classical) defence10.0%100.0%
C39King's knight's gambit30.0%33.3%
C40Damiano's defence2927.6%55.2%
C40Greco defence10419.2%63.5%
C40Gunderam defence29925.4%62.2%
C40King's knight opening616.7%41.7%
C40Latvian counter-gambit25229.0%56.9%
C40Latvian gambit, 3.Bc41030.0%75.0%
C40Latvian, Fraser defence258.0%56.0%
C40Latvian, Polerio variation60.0%33.3%
C40QP counter-gambit (elephant gambit)21318.8%62.4%
C40QP counter-gambit, Maroczy gambit7125.4%60.6%
C41Philidor's defence74830.9%55.7%
C41Philidor, Boden variation2619.2%59.6%
C41Philidor, Hanham variation11538.3%55.7%
C41Philidor, Hanham, Delmar variation1136.4%72.7%
C41Philidor, Hanham, Kmoch variation20.0%50.0%
C41Philidor, Hanham, Krause variation3732.4%62.2%
C41Philidor, Hanham, Schlechter variation8027.5%61.3%
C41Philidor, Hanham, Steiner variation3429.4%67.6%
C41Philidor, Improved Hanham variation136227.3%56.2%
C41Philidor, Larsen variation9524.2%64.7%
C41Philidor, Lopez counter-gambit1513.3%80.0%
C41Philidor, Nimzovich (Jaenisch) variation10031.0%48.5%
C41Philidor, Nimzovich variation3933.3%57.7%
C41Philidor, Nimzovich, Klein variation147.1%67.9%
C41Philidor, Nimzovich, Larobok variation5141.2%34.3%
C41Philidor, Nimzovich, Locock variation20.0%50.0%
C41Philidor, Nimzovich, Rellstab variation11030.0%64.1%
C41Philidor, Nimzovich, Sokolsky variation520.0%50.0%
C41Philidor, Nimzovich, Sozin variation4517.8%48.9%
C41Philidor, Paulsen attack40.0%100.0%
C41Philidor, Philidor counter-gambit3923.1%52.6%
C41Philidor, Philidor counter-gambit, Zukertort variation1931.6%57.9%
C41Philidor, Philidor counter-gambit, del Rio attack540.0%60.0%
C41Philidor, Steinitz variation1729.4%50.0%
C41Philidor, exchange variation197426.1%57.8%
C42Petrov three knights game83728.9%54.4%
C42Petrov's defence113626.3%53.7%
C42Petrov, Cochrane gambit5420.4%45.4%
C42Petrov, Cozio (Lasker) attack29933.1%51.7%
C42Petrov, Damiano variation5437.0%53.7%
C42Petrov, French attack1618.8%65.6%
C42Petrov, Italian variation16520.0%51.8%
C42Petrov, Kaufmann attack35832.7%55.7%
C42Petrov, Nimzovich attack77132.7%53.7%
C42Petrov, Paulsen attack39627.0%48.4%
C42Petrov, classical attack335532.9%57.0%
C42Petrov, classical attack, Berger variation2138.1%57.1%
C42Petrov, classical attack, Chigorin variation165136.2%55.6%
C42Petrov, classical attack, Jaenisch variation495036.3%56.7%
C42Petrov, classical attack, Krause variation1100.0%50.0%
C42Petrov, classical attack, Marshall variation256030.0%55.3%
C42Petrov, classical attack, Mason variation9739.2%63.9%
C42Petrov, classical attack, Tarrasch variation1136.4%72.7%
C42Petrov, classical attack, close variation23131.6%53.9%
C43Petrov, Urusov gambit468.7%45.7%
C43Petrov, modern (Steinitz) attack16623.5%60.5%
C43Petrov, modern attack, Bardeleben variation1717.6%67.6%
C43Petrov, modern attack, Steinitz variation1127.3%59.1%
C43Petrov, modern attack, Symmetrical variation800033.4%54.2%
C43Petrov, modern attack, Trifunovic variation9033.3%51.1%
C43Petrov, modern attack, main line58531.8%58.3%
C44Dresden opening6421.9%45.3%
C44Inverted Hanham6325.4%49.2%
C44Inverted Hungarian7236.1%51.4%
C44King's pawn game11427.2%48.7%
C44Konstantinopolsky opening5026.0%51.0%
C44Ponziani counter-gambit32222.4%52.5%
C44Ponziani counter-gambit, Cordel variation10.0%100.0%
C44Ponziani counter-gambit, Schmidt attack20.0%0.0%
C44Ponziani opening25828.3%56.4%
C44Ponziani, Caro variation15631.4%49.0%
C44Ponziani, Fraser defence366.7%33.3%
C44Ponziani, Jaenisch counter-attack92230.8%47.7%
C44Ponziani, Leonhardt variation7934.2%48.7%
C44Ponziani, Reti variation166.3%53.1%
C44Ponziani, Romanishin variation1560.0%63.3%
C44Ponziani, Steinitz variation14436.1%51.4%
C44Scotch gambit12625.4%50.8%
C44Scotch gambit, Anderssen (Paulsen, Suhle) counter-attack2100.0%50.0%
C44Scotch gambit, Benima defence6630.3%51.5%
C44Scotch gambit, Dubois-Reti defence82330.3%49.5%
C44Scotch opening8629.1%44.8%
C44Scotch, Goering gambit21430.8%50.0%
C44Scotch, Goering gambit, Bardeleben variation1323.1%42.3%
C44Scotch, Lolli variation8421.4%52.4%
C44Scotch, Relfsson gambit ('MacLopez')5213.5%47.1%
C44Tayler opening1040.0%30.0%
C45Scotch game405331.6%53.3%
C45Scotch, Blackburne attack2356.5%54.3%
C45Scotch, Blumenfeld attack1145.5%22.7%
C45Scotch, Fraser attack10.0%100.0%
C45Scotch, Ghulam Kassim variation955.6%61.1%
C45Scotch, Horwitz attack3836.8%55.3%
C45Scotch, Meitner variation4235.7%53.6%
C45Scotch, Mieses variation222533.1%51.1%
C45Scotch, Paulsen attack2548.0%40.0%
C45Scotch, Potter variation33733.5%48.2%
C45Scotch, Pulling counter-attack3522.9%51.4%
C45Scotch, Romanishin variation4025.0%45.0%
C45Scotch, Rosenthal variation10.0%0.0%
C45Scotch, Schmidt variation108440.5%50.3%
C45Scotch, Steinitz variation6625.8%46.2%
C45Scotch, Tartakower variation2227.3%50.0%
C46Four knights game134630.0%51.7%
C46Four knights, Gunsberg variation17331.8%47.1%
C46Four knights, Italian variation49331.2%50.1%
C46Four knights, Schultze-Mueller gambit3132.3%38.7%
C46Three knights game42226.1%54.7%
C46Three knights, Schlechter variation2634.6%63.5%
C46Three knights, Steinitz variation24924.9%52.6%
C46Three knights, Steinitz, Rosenthal variation2352.2%60.9%
C47Four knights, Belgrade gambit31324.3%45.7%
C47Four knights, Scotch variation6737.3%59.0%
C47Four knights, Scotch, 4...exd483736.3%50.9%
C47Four knights, Scotch, Krause variation28330.4%54.8%
C48Four knights, Bardeleben variation922.2%55.6%
C48Four knights, Marshall variation1711.8%47.1%
C48Four knights, Ranken variation3225.0%43.8%
C48Four knights, Rubinstein counter-gambit178925.9%54.0%
C48Four knights, Rubinstein counter-gambit, 5.Be21735.3%52.9%
C48Four knights, Rubinstein counter-gambit, Bogolyubov variation1735.3%52.9%
C48Four knights, Rubinstein counter-gambit, Henneberger variation5234.6%63.5%
C48Four knights, Rubinstein counter-gambit, exchange variation13942.4%48.6%
C48Four knights, Spanish variation39828.4%51.9%
C48Four knights, Spanish, classical defence20632.0%51.5%
C48Four knights, Spielmann variation633.3%50.0%
C49Four knights13635.3%50.7%
C49Four knights, Gunsberg counter-attack250.0%75.0%
C49Four knights, Janowski variation2138.1%38.1%
C49Four knights, Nimzovich (Paulsen) variation8843.2%54.5%
C49Four knights, Svenonius variation30.0%66.7%
C49Four knights, double Ruy Lopez41841.4%56.6%
C49Four knights, symmetrical variation55431.2%49.4%
C49Four knights, symmetrical, Blake variation475.0%62.5%
C49Four knights, symmetrical, Capablanca variation3342.4%57.6%
C49Four knights, symmetrical, Maroczy system9339.8%53.2%
C49Four knights, symmetrical, Metger unpin49235.0%52.2%
C49Four knights, symmetrical, Pillsbury variation4825.0%41.7%
C49Four knights, symmetrical, Tarrasch variation540.0%60.0%
C50Giuoco Pianissimo226530.4%52.2%
C50Giuoco Pianissimo, Canal variation24330.5%51.4%
C50Giuoco Pianissimo, Italian four knights variation58629.2%55.4%
C50Giuoco Piano345930.7%51.7%
C50Giuoco Piano, four knights variation15127.8%50.3%
C50Hungarian defence15838.0%53.2%
C50King's pawn game45524.2%53.8%
C50Rousseau gambit70.0%71.4%
C51Evans counter-gambit50.0%40.0%
C51Evans gambit1421.4%32.1%
C51Evans gambit declined4334.9%47.7%
C51Evans gambit declined, 5.a411628.4%48.7%
C51Evans gambit declined, Cordel variation1330.8%30.8%
C51Evans gambit declined, Showalter variation2733.3%46.3%
C51Evans gambit, 5...Be71540.0%46.7%
C51Evans gambit, Cordel variation17731.1%48.3%
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 variation6621.2%45.5%
C51Evans gambit, normal variation1435.7%46.4%
C52Evans gambit31124.4%39.9%
C52Evans gambit, Alapin-Steinitz variation450.0%75.0%
C52Evans gambit, Lasker defence1040.0%50.0%
C52Evans gambit, Leonhardt variation475.0%62.5%
C52Evans gambit, Levenfish variation250.0%25.0%
C52Evans gambit, Richardson attack616.7%25.0%
C52Evans gambit, Sokolsky variation10.0%0.0%
C52Evans gambit, Tartakower attack14226.8%52.1%
C52Evans gambit, Waller attack616.7%41.7%
C52Evans gambit, compromised defence4214.3%52.4%
C52Evans gambit, compromised defence, Paulsen variation1625.0%68.8%
C53Giuoco Piano761228.6%52.2%
C53Giuoco Piano, Anderssen variation3246.9%54.7%
C53Giuoco Piano, Bird's attack15226.3%51.3%
C53Giuoco Piano, LaBourdonnais variation2245.5%63.6%
C53Giuoco Piano, Mestel variation616.7%58.3%
C53Giuoco Piano, Tarrasch variation425.0%62.5%
C53Giuoco Piano, centre-holding variation4619.6%57.6%
C53Giuoco Piano, close variation10524.8%53.3%
C54Giuoco Piano22028.2%55.9%
C54Giuoco Piano, Cracow variation10.0%100.0%
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 defence20028.5%47.8%
C55Two knights defence (Modern bishop's opening)156730.3%55.6%
C55Two knights defence, Keidanz variation1100.0%50.0%
C55Two knights defence, Perreux variation4032.5%51.3%
C55Two knights, Max Lange attack16223.5%46.9%
C55Two knights, Max Lange attack, Krause variation250.0%75.0%
C55Two knights, Max Lange attack, Marshall variation450.0%50.0%
C55Two knights, Max Lange attack, Schlechter variation15329.4%50.0%
C55Two knights, Max Lange attack, Steinitz variation911.1%61.1%
C56Two knights defence8134.6%50.6%
C56Two knights defence, Canal variation2748.1%42.6%
C57Two knights defence7821.8%37.8%
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 variation2218.2%63.6%
C57Two knights defence, Fritz, Gruber variation1833.3%55.6%
C57Two knights defence, Lolli attack2020.0%55.0%
C57Two knights defence, Pincus variation1145.5%59.1%
C57Two knights defence, Ulvestad variation5825.9%54.3%
C57Two knights defence, Wilkes Barre (Traxler) variation9319.4%60.2%
C58Two knights defence33024.5%57.7%
C58Two knights defence, Blackburne variation450.0%75.0%
C58Two knights defence, Bogolyubov variation8217.1%57.3%
C58Two knights defence, Colman variation119.1%77.3%
C58Two knights defence, Kieseritsky variation3930.8%53.8%
C58Two knights defence, Paoli variation1216.7%75.0%
C58Two knights defence, Yankovich variation540.0%40.0%
C59Two knights defence18625.8%48.4%
C59Two knights defence, Goering variation20.0%50.0%
C59Two knights defence, Knorre variation1100.0%50.0%
C59Two knights defence, Steinitz variation22127.1%56.6%
C60Ruy Lopez (Spanish opening)21927.9%50.5%
C60Ruy Lopez, Brentano defence616.7%58.3%
C60Ruy Lopez, Cozio defence64629.6%57.2%
C60Ruy Lopez, Cozio defence, Paulsen variation4740.4%54.3%
C60Ruy Lopez, Lucena defence2825.0%48.2%
C60Ruy Lopez, Nuernberg variation2646.2%42.3%
C60Ruy Lopez, Vinogradov variation933.3%50.0%
C60Ruy Lopez, fianchetto (Smyslov/Barnes) defence63435.2%53.7%
C61Ruy Lopez, Bird's defence53630.8%56.4%
C61Ruy Lopez, Bird's defence, Paulsen variation1729.4%44.1%
C62Ruy Lopez, old Steinitz defence77428.4%56.1%
C62Ruy Lopez, old Steinitz defence, Nimzovich attack2817.9%69.6%
C62Ruy Lopez, old Steinitz defence, semi-Duras variation1127.3%59.1%
C63Ruy Lopez, Schliemann defence54728.3%57.1%
C63Ruy Lopez, Schliemann defence, Berger variation87134.9%55.6%
C64Ruy Lopez, Cordel gambit7926.6%65.2%
C64Ruy Lopez, classical (Cordel) defence84932.9%52.6%
C64Ruy Lopez, classical defence, 4.c349727.8%53.7%
C64Ruy Lopez, classical defence, Benelux variation 61633.3%50.9%
C64Ruy Lopez, classical defence, Boden variation2100.0%50.0%
C64Ruy Lopez, classical defence, Charousek variation2722.2%63.0%
C64Ruy Lopez, classical defence, Zaitsev variation825.0%37.5%
C65Ruy Lopez, Berlin defence686330.3%51.5%
C65Ruy Lopez, Berlin defence, 4.O-O29131.6%61.2%
C65Ruy Lopez, Berlin defence, Anderssen variation933.3%16.7%
C65Ruy Lopez, Berlin defence, Beverwijk variation64130.3%53.8%
C65Ruy Lopez, Berlin defence, Duras variation3438.2%45.6%
C65Ruy Lopez, Berlin defence, Kaufmann variation1118.2%45.5%
C65Ruy Lopez, Berlin defence, Mortimer variation2520.0%62.0%
C65Ruy Lopez, Berlin defence, Nyholm attack9435.1%52.7%
C66Ruy Lopez, Berlin defence, 4.O-O, d613039.2%55.0%
C66Ruy Lopez, Berlin defence, hedgehog variation17339.9%52.9%
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 variation6847.1%60.3%
C66Ruy Lopez, closed Berlin defence, Wolf variation14739.5%55.8%
C67Ruy Lopez, Berlin defence, Cordel variation4835.4%57.3%
C67Ruy Lopez, Berlin defence, Minckwitz variation6541.5%63.8%
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 variation5242.3%57.7%
C67Ruy Lopez, Berlin defence, Trifunovic variation30.0%100.0%
C67Ruy Lopez, Berlin defence, Winawer attack1172.7%45.5%
C67Ruy Lopez, Berlin defence, Zukertort variation1752.9%44.1%
C67Ruy Lopez, Berlin defence, open variation1055235.1%52.8%
C67Ruy Lopez, open Berlin defence, 5...Be712734.6%55.9%
C67Ruy Lopez, open Berlin defence, Showalter variation633.3%66.7%
C67Ruy Lopez, open Berlin defence, l'Hermet variation10736.4%43.5%
C68Ruy Lopez, exchange variation35625.3%57.0%
C68Ruy Lopez, exchange, Alekhine variation7732.5%43.5%
C68Ruy Lopez, exchange, Keres variation32735.8%50.9%
C68Ruy Lopez, exchange, Romanovsky variation2128.6%57.1%
C69Ruy Lopez, exchange variation, 5.O-O89130.5%55.0%
C69Ruy Lopez, exchange variation, Alapin gambit16531.5%53.3%
C69Ruy Lopez, exchange, Bronstein variation59730.0%51.7%
C69Ruy Lopez, exchange, Gligoric variation65135.3%53.9%
C70Ruy Lopez10530.5%52.4%
C70Ruy Lopez, Alapin's defence deferred70.0%42.9%
C70Ruy Lopez, Caro variation11028.2%55.0%
C70Ruy Lopez, Classical defence deferred54226.8%52.1%
C70Ruy Lopez, Cozio defence deferred25331.6%53.8%
C70Ruy Lopez, Graz variation1136.4%54.5%
C70Ruy Lopez, Schliemann defence deferred6527.7%53.8%
C70Ruy Lopez, Taimanov (chase/wing/accelerated counterthrust) variation26226.7%55.0%
C70Ruy Lopez, fianchetto defence deferred4936.7%57.1%
C71Ruy Lopez, modern Steinitz defence16727.5%52.7%
C71Ruy Lopez, modern Steinitz defence, Duras (Keres) variation24230.2%52.3%
C71Ruy Lopez, modern Steinitz defence, Three knights variation2825.0%58.9%
C72Ruy Lopez, modern Steinitz defence, 5.O-O61230.4%55.9%
C73Ruy Lopez, modern Steinitz defence, Alapin variation33527.2%54.5%
C73Ruy Lopez, modern Steinitz defence, Richter variation25232.5%50.8%
C74Ruy Lopez, Siesta, Kopayev variation14627.4%53.4%
C74Ruy Lopez, modern Steinitz defence9534.7%56.3%
C74Ruy Lopez, modern Steinitz defence, siesta variation7027.1%45.0%
C75Ruy Lopez, modern Steinitz defence35627.2%59.4%
C75Ruy Lopez, modern Steinitz defence, Rubinstein variation15033.3%59.3%
C76Ruy Lopez, modern Steinitz defence, fianchetto (Bronstein) variation65328.0%50.9%
C77Ruy Lopez, Anderssen variation150729.9%50.3%
C77Ruy Lopez, Morphy defence42033.6%54.4%
C77Ruy Lopez, Morphy defence, Duras variation11531.3%47.8%
C77Ruy Lopez, Treybal (Bayreuth) variation (exchange var. deferred)20830.8%51.4%
C77Ruy Lopez, Wormald (Alapin) attack71133.1%50.7%
C77Ruy Lopez, Wormald attack, Gruenfeld variation450.0%75.0%
C77Ruy Lopez, four knights (Tarrasch) variation32430.9%55.9%
C78Ruy Lopez, ...b5 & ...d610027.0%47.5%
C78Ruy Lopez, 5.O-O343231.8%54.3%
C78Ruy Lopez, Archangelsk (counterthrust) variation448429.4%54.0%
C78Ruy Lopez, Moeller defence83330.7%52.2%
C78Ruy Lopez, Rabinovich variation10.0%100.0%
C78Ruy Lopez, Wing attack2343.5%65.2%
C79Ruy Lopez, Steinitz defence deferred (Russian defence)39233.2%52.6%
C79Ruy Lopez, Steinitz defence deferred, Lipnitsky variation1942.1%47.4%
C79Ruy Lopez, Steinitz defence deferred, Rubinstein variation1520.0%70.0%
C80Ruy Lopez, open (Tarrasch) defence12638.9%48.8%
C80Ruy Lopez, open, 6.d44928.6%59.2%
C80Ruy Lopez, open, 6.d4 b510.0%100.0%
C80Ruy Lopez, open, 7.Bb352231.0%51.7%
C80Ruy Lopez, open, 8...Be6140232.5%46.6%
C80Ruy Lopez, open, 8.de1921.1%52.6%
C80Ruy Lopez, open, Berger variation666.7%33.3%
C80Ruy Lopez, open, Bernstein variation105437.4%57.9%
C80Ruy Lopez, open, Bernstein variation, Karpov gambit1163.6%68.2%
C80Ruy Lopez, open, Friess attack944.4%33.3%
C80Ruy Lopez, open, Harksen gambit50.0%60.0%
C80Ruy Lopez, open, Richter variation30.0%33.3%
C80Ruy Lopez, open, Riga variation4129.3%58.5%
C80Ruy Lopez, open, Schlechter defence2437.5%31.3%
C80Ruy Lopez, open, Tartakower variation1442.9%57.1%
C80Ruy Lopez, open, Zukertort variation714.3%50.0%
C81Ruy Lopez, open, Howell attack10239.2%57.8%
C81Ruy Lopez, open, Howell attack, Ekstroem variation1752.9%61.8%
C82Ruy Lopez, open, 9.c3616.7%58.3%
C82Ruy Lopez, open, Berlin variation2030.0%60.0%
C82Ruy Lopez, open, Dilworth variation9226.1%52.2%
C82Ruy Lopez, open, Italian variation9031.1%61.1%
C82Ruy Lopez, open, Motzko attack9038.9%53.9%
C82Ruy Lopez, open, Motzko attack, Nenarokov variation850.0%37.5%
C82Ruy Lopez, open, St. Petersburg variation30537.0%59.5%
C83Ruy Lopez, open, 9...Be7, 10.Re12334.8%56.5%
C83Ruy Lopez, open, Breslau variation50.0%80.0%
C83Ruy Lopez, open, Malkin variation1428.6%71.4%
C83Ruy Lopez, open, classical defence20837.5%57.2%
C84Ruy Lopez, closed defence137132.5%51.6%
C84Ruy Lopez, closed, centre attack23831.1%50.0%
C85Ruy Lopez, Exchange variation doubly deferred (DERLD)172031.3%53.2%
C86Ruy Lopez, Worrall attack10627.4%58.0%
C86Ruy Lopez, Worrall attack, sharp line29132.6%50.0%
C86Ruy Lopez, Worrall attack, solid line27131.7%50.9%
C87Ruy Lopez, closed, Averbach variation39330.3%57.4%
C88Ruy Lopez, Noah's ark trap50.0%60.0%
C88Ruy Lopez, Trajkovic counter-attack29626.4%53.7%
C88Ruy Lopez, closed430227.7%48.4%
C88Ruy Lopez, closed, 7...O-O1054530.1%51.9%
C88Ruy Lopez, closed, 7...d6, 8.d413324.1%37.6%
C88Ruy Lopez, closed, 8.c35324.5%53.8%
C88Ruy Lopez, closed, Balla variation2937.9%63.8%
C88Ruy Lopez, closed, anti-Marshall 8.a4176429.8%52.0%
C89Ruy Lopez, Marshall counter-attack491434.6%51.7%
C89Ruy Lopez, Marshall counter-attack, 11...c6135335.9%47.7%
C89Ruy Lopez, Marshall, Herman Steiner variation5111.8%54.9%
C89Ruy Lopez, Marshall, Kevitz variation1827.8%52.8%
C89Ruy Lopez, Marshall, main line, 12.d2d4158128.3%54.7%
C89Ruy Lopez, Marshall, main line, 14...Qh3119940.3%47.7%
C89Ruy Lopez, Marshall, main line, Spassky variation1100.0%50.0%
C90Ruy Lopez, closed (with ...d6)254427.8%49.3%
C90Ruy Lopez, closed, Lutikov variation2948.3%51.7%
C90Ruy Lopez, closed, Pilnik variation323326.0%52.5%
C90Ruy Lopez, closed, Suetin variation6124.6%51.6%
C91Ruy Lopez, closed, 9.d4419027.6%56.2%
C91Ruy Lopez, closed, Bogolyubov variation678732.7%51.8%
C92Ruy Lopez, closed, 9.h358027.2%55.2%
C92Ruy Lopez, closed, Flohr-Zaitsev system (Lenzerheide variation)377032.9%54.3%
C92Ruy Lopez, closed, Keres (9...a5) variation5123.5%58.8%
C92Ruy Lopez, closed, Kholmov variation19927.1%58.8%
C92Ruy Lopez, closed, Ragozin-Petrosian (`Keres') variation35033.1%64.3%
C93Ruy Lopez, closed, Smyslov defence27233.1%58.1%
C94Ruy Lopez, closed, Breyer defence13040.0%53.1%
C95Ruy Lopez, closed, Breyer, Borisenko variation242130.6%56.2%
C95Ruy Lopez, closed, Breyer, Gligoric variation8021.3%65.6%
C95Ruy Lopez, closed, Breyer, Simagin variation8043.8%61.9%
C96Ruy Lopez, closed (10...c5)133530.2%59.8%
C96Ruy Lopez, closed (8...Na5)5726.3%53.5%
C96Ruy Lopez, closed, Borisenko defence8328.9%57.8%
C96Ruy Lopez, closed, Keres (...Nd7) defence39038.5%60.3%
C96Ruy Lopez, closed, Rossolimo defence616.7%75.0%
C97Ruy Lopez, closed, Chigorin defence185523.3%60.4%
C98Ruy Lopez, closed, Chigorin, 12...Nc628429.9%62.9%
C98Ruy Lopez, closed, Chigorin, Rauzer attack1838.9%52.8%
C99Ruy Lopez, closed, Chigorin, 12...c5d4225334.8%58.8%
D00Blackmar gambit14934.9%43.0%
D00Blackmar-Diemer gambit5022.0%55.0%
D00Blackmar-Diemer, Euwe defence1915.8%50.0%
D00Blackmar-Diemer, Lemberg counter-gambit250.0%75.0%
D00Levitsky attack (Queen's bishop attack)363627.3%50.1%
D00Queen's pawn game404435.7%50.3%
D00Queen's pawn, Anti-Veresov1030.0%65.0%
D00Queen's pawn, Chigorin variation193524.0%51.4%
D00Queen's pawn, Mason variation279027.5%51.7%
D00Queen's pawn, Mason variation, Steinitz counter-gambit83629.8%49.5%
D00Queen's pawn, stonewall attack14729.9%49.0%
D01Richter-Veresov attack178228.6%47.1%
D01Richter-Veresov attack, Richter variation7837.2%42.9%
D01Richter-Veresov attack, Veresov variation7825.6%52.6%
D02Queen's bishop game429729.5%51.6%
D02Queen's pawn game1809829.2%53.2%
D02Queen's pawn game, Chigorin variation213927.3%54.3%
D02Queen's pawn game, Krause variation107933.5%51.9%
D03Torre attack (Tartakower variation)131326.2%50.4%
D04Queen's pawn game364532.8%52.6%
D05Colle system83030.1%51.9%
D05Queen's pawn game292330.1%52.6%
D05Queen's pawn game, Rubinstein (Colle-Zukertort) variation87032.9%55.3%
D05Queen's pawn game, Zukertort variation6631.8%58.3%
D06QGD, Grau (Sahovic) defence267124.6%56.8%
D06QGD, Marshall defence49131.0%58.7%
D06QGD, symmetrical (Austrian) defence16931.4%55.3%
D06Queen's Gambit2119.0%57.1%
D07QGD, Chigorin defence332427.6%57.3%
D07QGD, Chigorin defence, Janowski variation92724.7%60.6%
D08QGD, Albin counter-gambit40331.5%50.5%
D08QGD, Albin counter-gambit, Alapin variation4837.5%54.2%
D08QGD, Albin counter-gambit, Balogh variation40.0%25.0%
D08QGD, Albin counter-gambit, Janowski variation20.0%100.0%
D08QGD, Albin counter-gambit, Krenosz variation250.0%75.0%
D08QGD, Albin counter-gambit, Lasker trap10.0%0.0%
D09QGD, Albin counter-gambit, 5.g316433.5%57.0%
D10QGD Slav defence662531.1%54.4%
D10QGD Slav defence, Alekhine variation66420.5%56.2%
D10QGD Slav defence, exchange variation462833.1%53.0%
D10QGD Slav, Winawer counter-gambit37229.3%54.4%
D11QGD Slav, 3.Nf3734429.9%54.6%
D11QGD Slav, 4.e3731229.8%56.0%
D11QGD Slav, Breyer variation33328.5%55.1%
D12QGD Slav, 4.e3 Bf51133629.1%54.6%
D12QGD Slav, Amsterdam variation7435.1%48.6%
D12QGD Slav, Landau variation1100.0%50.0%
D12QGD Slav, exchange variation51226.8%53.0%
D13QGD Slav, exchange variation150232.7%53.4%
D14QGD Slav, exchange variation, 6.Bf4 Bf598231.5%51.5%
D14QGD Slav, exchange, Trifunovic variation26940.9%50.6%
D15QGD Slav accepted48128.5%50.8%
D15QGD Slav, 4.Nc3463129.5%53.2%
D15QGD Slav, 5.e3 (Alekhine variation)48423.1%49.2%
D15QGD Slav, Schlechter variation38830.7%54.8%
D15QGD Slav, Slav gambit59424.4%49.7%
D15QGD Slav, Suechting variation11222.3%54.0%
D15QGD Slav, Tolush-Geller gambit41123.8%45.3%
D16QGD Slav accepted, Alapin variation37323.3%70.1%
D16QGD Slav, Smyslov variation17122.2%60.2%
D16QGD Slav, Soultanbeieff variation28739.7%57.8%
D16QGD Slav, Steiner variation50025.8%59.1%
D17QGD Slav, Carlsbad variation74831.8%52.9%
D17QGD Slav, Czech defence95735.6%53.7%
D17QGD Slav, Krause attack88327.3%57.9%
D17QGD Slav, Wiesbaden variation75628.0%59.0%
D18QGD Slav, Dutch variation103333.2%56.9%
D18QGD Slav, Dutch, Lasker variation3622.2%66.7%
D19QGD Slav, Dutch variation287429.8%56.4%
D19QGD Slav, Dutch variation, main line56436.0%52.4%
D20QGA, 3.e4469729.1%56.1%
D20QGA, Linares variation7428.4%54.7%
D20QGA, Schwartz defence2100.0%50.0%
D20Queen's gambit accepted243530.6%55.1%
D21QGA, 3.Nf3162426.2%54.9%
D21QGA, Alekhine defense, Borisenko-Furman variation5731.6%38.6%
D21QGA, Ericson variation3342.4%54.5%
D22QGA, Alekhine defence61632.0%57.4%
D22QGA, Alekhine defence, Alatortsev variation1145.5%68.2%
D22QGA, Haberditz variation42332.6%59.1%
D23QGA, Mannheim variation79133.0%53.5%
D23Queen's gambit accepted21331.0%49.8%
D24QGA, 4.Nc336431.3%53.8%
D24QGA, Bogolyubov variation40818.1%45.1%
D25QGA, 4.e360429.5%57.5%
D25QGA, Flohr variation10726.2%60.7%
D25QGA, Janowsky-Larsen variation91929.1%57.3%
D25QGA, Smyslov variation21232.1%57.5%
D26QGA, 4...e692131.9%52.8%
D26QGA, classical variation145934.5%54.3%
D26QGA, classical variation, 6.O-O49634.7%57.7%
D26QGA, classical, Furman variation560.0%50.0%
D26QGA, classical, Steinitz variation17845.5%59.3%
D27QGA, classical, 6...a6635337.0%54.2%
D27QGA, classical, Geller variation8833.0%42.6%
D27QGA, classical, Rubinstein variation479035.0%55.6%
D28QGA, classical, 7...b531135.4%55.6%
D28QGA, classical, 7.Qe217939.1%54.7%
D29QGA, classical, 8...Bb780932.0%47.8%
D29QGA, classical, Smyslov variation9728.9%54.6%
D30QGD386632.9%52.6%
D30QGD Slav154233.3%53.9%
D30QGD Slav, Semmering variation40036.5%53.0%
D30QGD, Capablanca variation6421.9%48.4%
D30QGD, Capablanca-Duras variation85528.4%52.2%
D30QGD, Hastings variation77635.8%50.4%
D30QGD, Spielmann variation540.0%80.0%
D30QGD, Stonewall variation333.3%83.3%
D30QGD, Vienna variation168137.5%54.6%
D30Queen's gambit declined830231.4%53.7%
D31QGD, 3.Nc3137228.1%54.2%
D31QGD, Alapin variation5016.0%42.0%
D31QGD, Charousek (Petrosian) variation316928.9%53.5%
D31QGD, Janowski variation27336.3%55.1%
D31QGD, semi-Slav152930.8%53.5%
D31QGD, semi-Slav, Abrahams variation128829.2%46.6%
D31QGD, semi-Slav, Junge variation4221.4%63.1%
D31QGD, semi-Slav, Koomen variation862.5%56.3%
D31QGD, semi-Slav, Marshall gambit405328.8%55.3%
D31QGD, semi-Slav, Noteboom variation89128.6%52.0%
D32QGD, Tarrasch defence50231.3%53.9%
D32QGD, Tarrasch defence, 4.cd ed5024.0%48.0%
D32QGD, Tarrasch defence, Marshall gambit2733.3%53.7%
D32QGD, Tarrasch defence, Tarrasch gambit728.6%42.9%
D32QGD, Tarrasch, von Hennig-Schara gambit9930.3%57.6%
D33QGD, Tarrasch, Folkestone (Swedish) variation7736.4%55.8%
D33QGD, Tarrasch, Prague variation15334.0%58.2%
D33QGD, Tarrasch, Schlechter-Rubinstein system1921.1%52.6%
D33QGD, Tarrasch, Schlechter-Rubinstein system, Rey Ardid variation250.0%75.0%
D33QGD, Tarrasch, Wagner variation3125.8%64.5%
D34QGD, Tarrasch, Bogolyubov variation742.9%21.4%
D34QGD, Tarrasch, Prague variation, 7...Be771033.5%57.6%
D34QGD, Tarrasch, Prague variation, 9.Bg5168836.8%56.0%
D34QGD, Tarrasch, Prague variation, Normal position166935.9%57.9%
D34QGD, Tarrasch, Reti variation7038.6%56.4%
D34QGD, Tarrasch, Stoltz variation20.0%100.0%
D35QGD, 3...Nf623132.5%43.5%
D35QGD, Harrwitz attack15735.7%52.2%
D35QGD, exchange variation41532.5%55.5%
D35QGD, exchange, Saemisch variation32828.7%53.4%
D35QGD, exchange, chameleon variation1827.8%63.9%
D35QGD, exchange, positional line329228.6%53.8%
D35QGD, exchange, positional line, 5...c6219628.6%55.3%
D36QGD, exchange, positional line, 6.Qc255333.1%52.4%
D37QGD, 4.Nf3732632.8%53.3%
D37QGD, classical variation (5.Bf4)967833.2%54.0%
D38QGD, Ragozin variation1003432.4%54.0%
D39QGD, Ragozin, Vienna variation169436.8%50.5%
D40QGD, Semi-Tarrasch defence103933.6%51.3%
D40QGD, Semi-Tarrasch defence, Pillsbury variation6547.7%51.5%
D40QGD, Semi-Tarrasch, symmetrical variation9733.0%48.5%
D41QGD, Semi-Tarrasch with e337037.0%55.3%
D41QGD, Semi-Tarrasch, 5.cd111537.0%56.5%
D41QGD, Semi-Tarrasch, Kmoch variation4362.8%59.3%
D41QGD, Semi-Tarrasch, San Sebastian variation8023.8%69.4%
D42QGD, Semi-Tarrasch, 7.Bd377437.0%57.8%
D43QGD semi-Slav2759429.6%53.9%
D43QGD semi-Slav, Hastings variation825.0%25.0%
D44QGD semi-Slav, 5.Bg5 dc52732.1%48.1%
D44QGD semi-Slav, Botvinnik system (anti-Meran)42925.2%49.0%
D44QGD semi-Slav, Ekstrom variation5521.8%40.0%
D44QGD semi-Slav, anti-Meran gambit225126.9%59.9%
D44QGD semi-Slav, anti-Meran, Alatortsev system5111.8%60.8%
D44QGD semi-Slav, anti-Meran, Lilienthal variation49321.3%58.9%
D44QGD semi-Slav, anti-Meran, Szabo variation23820.6%39.7%
D45QGD semi-Slav, 5...Nd7145926.9%51.2%
D45QGD semi-Slav, 5.e3159128.8%57.0%
D45QGD semi-Slav, Rubinstein (anti-Meran) system3135.5%59.7%
D45QGD semi-Slav, Stoltz variation4666431.3%52.7%
D45QGD semi-Slav, accelerated Meran (Alekhine variation)449033.1%54.0%
D45QGD semi-Slav, stonewall defence3016.7%61.7%
D46QGD semi-Slav, 6.Bd311728.2%52.6%
D46QGD semi-Slav, Bogolyubov variation46130.6%56.7%
D46QGD semi-Slav, Chigorin defence91332.9%54.4%
D46QGD semi-Slav, Romih variation24727.9%64.2%
D47QGD semi-Slav, 7.Bc490127.3%58.0%
D47QGD semi-Slav, Meran variation337331.7%53.1%
D47QGD semi-Slav, Meran, Wade variation2438530.0%53.0%
D47QGD semi-Slav, neo-Meran (Lundin variation)76631.1%56.4%
D48QGD semi-Slav, Meran43523.9%47.4%
D48QGD semi-Slav, Meran, 8...a6845932.5%49.1%
D48QGD semi-Slav, Meran, Pirc variation5232.7%58.7%
D48QGD semi-Slav, Meran, Reynolds' variation161331.0%56.6%
D48QGD semi-Slav, Meran, old main line23336.5%55.6%
D49QGD semi-Slav, Meran, Blumenfeld variation65430.1%51.3%
D49QGD semi-Slav, Meran, Rabinovich variation12040.8%60.4%
D49QGD semi-Slav, Meran, Rellstab attack4136.6%50.0%
D49QGD semi-Slav, Meran, Sozin variation43940.3%48.9%
D49QGD semi-Slav, Meran, Stahlberg variation9833.7%51.5%
D50QGD, 4.Bg544931.4%56.5%
D50QGD, Been-Koomen variation2321.7%45.7%
D50QGD, Canal (Venice) variation40.0%50.0%
D50QGD, Semi-Tarrasch4346.5%60.5%
D50QGD, Semi-Tarrasch, Krause variation475.0%37.5%
D50QGD, Semi-Tarrasch, Primitive Pillsbury variation2927.6%37.9%
D51QGD4717.0%59.6%
D51QGD, 4.Bg5 Nbd713629.4%55.1%
D51QGD, 5...c610531.4%57.6%
D51QGD, Alekhine variation1421.4%53.6%
D51QGD, Capablanca anti-Cambridge Springs variation2025.0%57.5%
D51QGD, Manhattan variation2630.8%57.7%
D51QGD, Rochlin variation10.0%0.0%
D52QGD60433.3%56.9%
D52QGD, Cambridge Springs defence10847.2%49.5%
D52QGD, Cambridge Springs defence, 7.cd63333.3%58.4%
D52QGD, Cambridge Springs defence, Argentine variation3423.5%50.0%
D52QGD, Cambridge Springs defence, Bogoljubow variation73830.4%54.5%
D52QGD, Cambridge Springs defence, Capablanca variation5040.0%50.0%
D52QGD, Cambridge Springs defence, Rubinstein variation22731.7%55.5%
D52QGD, Cambridge Springs defence, Yugoslav variation168027.3%58.6%
D53QGD, 4.Bg5 Be793634.7%54.1%
D53QGD, 4.Bg5 Be7, 5.e3 O-O5040.0%54.0%
D53QGD, Lasker variation1414.3%64.3%
D54QGD, Anti-neo-orthodox variation8026.3%50.6%
D55QGD, 6.Nf339332.8%57.9%
D55QGD, Neo-orthodox variation1952.6%57.9%
D55QGD, Neo-orthodox variation, 7.Bh460632.8%53.9%
D55QGD, Neo-orthodox variation, 7.Bxf633838.2%51.3%
D55QGD, Petrosian variation49039.8%53.0%
D55QGD, Pillsbury attack30.0%33.3%
D56QGD, Lasker defence59629.9%52.5%
D56QGD, Lasker defence, Teichmann variation15834.2%59.5%
D57QGD, Lasker defence, Bernstein variation3135.5%50.0%
D57QGD, Lasker defence, main line7835.9%59.0%
D58QGD, Tartakower (Makagonov-Bondarevsky) system1433633.1%52.7%
D59QGD, Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd564539.1%50.9%
D59QGD, Tartakower variation22746.7%41.9%
D60QGD, Orthodox defence39731.0%58.1%
D60QGD, Orthodox defence, Botvinnik variation25136.7%52.6%
D60QGD, Orthodox defence, Rauzer variation2927.6%58.6%
D61QGD, Orthodox defence, Rubinstein variation56830.8%54.0%
D62QGD, Orthodox defence, 7.Qc2 c5, 8.cd (Rubinstein)28842.4%50.3%
D63QGD, Orthodox defence13525.9%57.4%
D63QGD, Orthodox defence, 7.Rc135934.0%54.0%
D63QGD, Orthodox defence, Capablanca variation60.0%66.7%
D63QGD, Orthodox defence, Pillsbury attack2744.4%40.7%
D63QGD, Orthodox defence, Swiss (Henneberger) variation22029.1%50.9%
D63QGD, Orthodox defence, Swiss, Karlsbad variation31628.8%52.7%
D64QGD, Orthodox defence, Rubinstein attack (with Rc1)20940.7%56.2%
D64QGD, Orthodox defence, Rubinstein attack, Gruenfeld variation11038.2%49.1%
D64QGD, Orthodox defence, Rubinstein attack, Karlsbad variation3135.5%40.3%
D64QGD, Orthodox defence, Rubinstein attack, Wolf variation3638.9%55.6%
D65QGD, Orthodox defence, Rubinstein attack, main line2334.8%39.1%
D66QGD, Orthodox defence, Bd3 line42631.7%55.8%
D66QGD, Orthodox defence, Bd3 line, fianchetto variation3727.0%64.9%
D67QGD, Orthodox defence, Bd3 line9243.5%50.0%
D67QGD, Orthodox defence, Bd3 line, 11.O-O20532.2%62.9%
D67QGD, Orthodox defence, Bd3 line, Alekhine variation12548.0%61.6%
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 variation15636.5%55.4%
D68QGD, Orthodox defence, classical, 13.d1b1 (Maroczy)771.4%64.3%
D68QGD, Orthodox defence, classical, 13.d1c2 (Vidmar)11136.9%59.0%
D69QGD, Orthodox defence, classical, 13.de5261.5%48.1%
D70Neo-Gruenfeld (Kemeri) defence29141.6%55.5%
D70Neo-Gruenfeld defence78123.4%50.4%
D71Neo-Gruenfeld, 5.cd28838.5%57.8%
D72Neo-Gruenfeld, 5.cd, main line47329.6%54.3%
D73Neo-Gruenfeld, 5.Nf3133240.1%53.3%
D74Neo-Gruenfeld, 6.cd Nxd5, 7.O-O65633.4%58.3%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc362541.3%53.6%
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.dc4731.9%60.6%
D76Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb6190834.6%55.6%
D77Neo-Gruenfeld, 6.O-O275434.2%54.4%
D78Neo-Gruenfeld, 6.O-O c6292533.8%53.6%
D79Neo-Gruenfeld, 6.O-O, main line135338.0%53.1%
D80Gruenfeld defence103139.6%53.4%
D80Gruenfeld, Stockholm variation73234.0%50.6%
D81Gruenfeld, Russian variation47633.8%54.9%
D82Gruenfeld, 4.Bf469332.9%52.5%
D83Gruenfeld, Gruenfeld gambit8431.0%50.0%
D83Gruenfeld, Gruenfeld gambit, Botvinnik variation2661.5%46.2%
D83Gruenfeld, Gruenfeld gambit, Capablanca variation12646.0%57.1%
D84Gruenfeld, Gruenfeld gambit accepted9727.8%65.5%
D85Gruenfeld, exchange variation342436.0%53.0%
D85Gruenfeld, modern exchange variation903336.5%53.7%
D86Gruenfeld, exchange, Larsen variation2330.4%63.0%
D86Gruenfeld, exchange, Simagin's improved variation15332.0%53.3%
D86Gruenfeld, exchange, Simagin's lesser variation6731.3%63.4%
D86Gruenfeld, exchange, classical variation148832.0%54.8%
D87Gruenfeld, exchange, Seville variation22339.0%65.7%
D87Gruenfeld, exchange, Spassky variation88335.6%57.5%
D88Gruenfeld, Spassky variation, main line, 10...cd, 11.cd37541.6%52.0%
D89Gruenfeld, Spassky variation, main line, 13.Bd314034.3%55.0%
D89Gruenfeld, exchange, Sokolsky variation7032.9%37.9%
D90Gruenfeld, Flohr variation37335.7%48.7%
D90Gruenfeld, Schlechter variation5939.0%63.6%
D90Gruenfeld, Three knights variation82235.2%53.8%
D91Gruenfeld, 5.Bg5219332.2%49.8%
D92Gruenfeld, 5.Bf4122133.4%55.8%
D93Gruenfeld with Bf4 e385136.7%53.0%
D94Gruenfeld with e3 Bd33040.0%60.0%
D94Gruenfeld, 5.e377935.2%57.6%
D94Gruenfeld, Flohr defence6927.5%54.3%
D94Gruenfeld, Makogonov variation24932.1%50.6%
D94Gruenfeld, Opovcensky variation22237.8%49.5%
D94Gruenfeld, Smyslov defence28035.4%52.7%
D95Gruenfeld with e3 & Qb37636.8%48.7%
D95Gruenfeld, Botvinnik variation12232.0%43.9%
D96Gruenfeld, Russian variation55430.9%53.3%
D97Gruenfeld, Russian variation with e47431.1%50.7%
D97Gruenfeld, Russian, Alekhine (Hungarian) variation465732.3%51.4%
D97Gruenfeld, Russian, Byrne (Simagin) variation36126.0%49.9%
D97Gruenfeld, Russian, Levenfish variation2020.0%55.0%
D97Gruenfeld, Russian, Prins variation140833.5%55.2%
D97Gruenfeld, Russian, Szabo (Boleslavsky) variation35329.5%60.6%
D98Gruenfeld, Russian, Keres variation1323.1%73.1%
D98Gruenfeld, Russian, Smyslov variation63228.6%54.5%
D99Gruenfeld defence, Smyslov, Yugoslav variation5149.0%59.8%
D99Gruenfeld defence, Smyslov, main line40731.0%61.9%
E00Catalan opening794131.4%54.0%
E00Neo-Indian (Seirawan) attack67826.1%49.3%
E00Queen's pawn game163529.2%54.3%
E01Catalan, closed66433.3%52.8%
E02Catalan, open, 5.Qa412139.7%59.5%
E03Catalan, open, 5.Qa4 Nbd7, 6.Qxc44440.9%54.5%
E03Catalan, open, Alekhine variation175.9%44.1%
E04Catalan, open, 5.Nf31398432.9%53.8%
E05Catalan, open, classical line56231.0%55.3%
E06Catalan, closed, 5.Nf3880135.8%54.3%
E07Catalan, closed, 6...Nbd720229.7%52.5%
E07Catalan, closed, Botvinnik variation15625.0%60.6%
E08Catalan, closed, 7.Qc224930.9%54.0%
E08Catalan, closed, Qc2 & b348429.1%52.8%
E08Catalan, closed, Spassky gambit2821.4%60.7%
E08Catalan, closed, Zagoryansky variation450.0%75.0%
E09Catalan, closed, Sokolsky variation540.0%60.0%
E09Catalan, closed, main line81728.6%57.3%
E10Blumenfeld counter-gambit14027.1%55.0%
E10Blumenfeld counter-gambit accepted20723.7%53.4%
E10Blumenfeld counter-gambit, Dus-Chotimursky variation43127.8%55.9%
E10Blumenfeld counter-gambit, Spielmann variation12019.2%52.9%
E10Doery defence14225.4%47.2%
E10Dzindzikhashvili defence26828.7%57.3%
E10Queen's pawn game877132.1%54.4%
E11Bogo-Indian defence406833.0%55.1%
E11Bogo-Indian defence, Gruenfeld variation419031.8%55.5%
E11Bogo-Indian defence, Monticelli trap3125.8%58.1%
E11Bogo-Indian defence, Nimzovich variation291229.2%56.4%
E12Queen's Indian defence62029.0%50.6%
E12Queen's Indian, 4.Nc3754329.0%52.6%
E12Queen's Indian, 4.Nc3, Botvinnik variation11528.7%50.0%
E12Queen's Indian, Miles variation160131.5%53.4%
E12Queen's Indian, Petrosian system1210332.0%53.6%
E13Queen's Indian, 4.Nc3, main line38225.4%55.6%
E14Queen's Indian, 4.e3302630.4%52.3%
E14Queen's Indian, Averbakh variation1533.3%36.7%
E15Queen's Indian, 4.g3211640.9%54.9%
E15Queen's Indian, 4.g3 Bb732030.6%54.7%
E15Queen's Indian, Buerger variation4131.7%50.0%
E15Queen's Indian, Nimzovich variation (exaggerated fianchetto)3635429.9%55.0%
E15Queen's Indian, Rubinstein variation14621.9%54.1%
E16Queen's Indian, Capablanca variation50034.8%58.2%
E16Queen's Indian, Riumin variation48034.0%55.7%
E16Queen's Indian, Yates variation98232.0%58.5%
E17Queen's Indian, 5.Bg2 Be710534.3%48.6%
E17Queen's Indian, Euwe variation10836.1%60.6%
E17Queen's Indian, Opovcensky variation157429.2%58.3%
E17Queen's Indian, anti-Queen's Indian system32333.7%55.0%
E17Queen's Indian, old main line, 6.O-O122032.8%56.7%
E18Queen's Indian, old main line, 7.Nc3341133.2%56.3%
E19Queen's Indian, old main line, 9.Qxc3183833.4%55.3%
E20Nimzo-Indian defence32929.8%47.7%
E20Nimzo-Indian, Kmoch variation145425.7%53.3%
E20Nimzo-Indian, Mikenas attack2025.0%32.5%
E20Nimzo-Indian, Romanishin-Kasparov (Steiner) system92928.4%50.1%
E21Nimzo-Indian, three knights variation443529.4%52.1%
E21Nimzo-Indian, three knights, Euwe variation1450.0%53.6%
E21Nimzo-Indian, three knights, Korchnoi variation4434.1%60.2%
E22Nimzo-Indian, Spielmann variation25131.9%53.0%
E23Nimzo-Indian, Spielmann, 4...c5, 5.dc Nc64325.6%45.3%
E23Nimzo-Indian, Spielmann, Karlsbad variation1729.4%38.2%
E23Nimzo-Indian, Spielmann, San Remo variation650.0%58.3%
E24Nimzo-Indian, Saemisch variation25633.2%49.4%
E24Nimzo-Indian, Saemisch, Botvinnik variation3933.3%47.4%
E25Nimzo-Indian, Saemisch variation13936.0%51.8%
E25Nimzo-Indian, Saemisch, Keres variation47629.8%51.7%
E25Nimzo-Indian, Saemisch, Romanovsky variation23738.4%50.0%
E26Nimzo-Indian, Saemisch variation16127.3%49.7%
E26Nimzo-Indian, Saemisch, O'Kelly variation4526.7%40.0%
E27Nimzo-Indian, Saemisch variation6330.2%48.4%
E28Nimzo-Indian, Saemisch variation12331.7%52.4%
E29Nimzo-Indian, Saemisch, Capablanca variation13139.7%51.1%
E29Nimzo-Indian, Saemisch, main line14031.4%58.6%
E30Nimzo-Indian, Leningrad variation60331.0%50.0%
E30Nimzo-Indian, Leningrad, ...b5 gambit4045.0%42.5%
E31Nimzo-Indian, Leningrad, main line22322.0%46.0%
E32Nimzo-Indian, classical variation947932.5%52.8%
E32Nimzo-Indian, classical, Adorjan gambit29128.9%55.0%
E33Nimzo-Indian, classical, 4...Nc622725.6%58.6%
E33Nimzo-Indian, classical, Milner-Barry (Zurich) variation83926.8%54.1%
E34Nimzo-Indian, classical, Noa variation103235.5%51.6%
E35Nimzo-Indian, classical, Noa variation, 5.cd ed106233.9%49.6%
E36Nimzo-Indian, classical, Botvinnik variation2138.1%52.4%
E36Nimzo-Indian, classical, Noa variation, 5.a365833.4%55.5%
E36Nimzo-Indian, classical, Noa variation, main line1010.0%25.0%
E37Nimzo-Indian, classical, Noa variation, main line, 7.Qc216630.1%61.4%
E37Nimzo-Indian, classical, San Remo variation1241.7%54.2%
E38Nimzo-Indian, classical, 4...c589031.0%55.4%
E39Nimzo-Indian, classical, Pirc variation147233.0%56.0%
E40Nimzo-Indian, 4.e331429.3%53.5%
E40Nimzo-Indian, 4.e3, Taimanov variation15531.0%53.5%
E41Nimzo-Indian, 4.e3 c593433.8%50.9%
E41Nimzo-Indian, e3, Huebner variation106424.9%49.7%
E42Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein)217331.9%55.1%
E43Nimzo-Indian, Fischer variation68330.3%53.8%
E44Nimzo-Indian, Fischer variation, 5.Ne2103425.7%56.2%
E45Nimzo-Indian, 4.e3, Bronstein (Byrne) variation78331.4%54.5%
E46Nimzo-Indian, 4.e3 O-O20935.4%51.2%
E46Nimzo-Indian, Reshevsky variation159428.2%52.5%
E46Nimzo-Indian, Simagin variation12029.2%47.9%
E47Nimzo-Indian, 4.e3 O-O, 5.Bd397937.0%55.7%
E48Nimzo-Indian, 4.e3 O-O, 5.Bd3 d574632.2%52.7%
E49Nimzo-Indian, 4.e3, Botvinnik system46330.0%48.3%
E50Nimzo-Indian, 4.e3 e8g8, 5.Nf3, without ...d519532.3%59.2%
E51Nimzo-Indian, 4.e3 e8g8, 5.Nf3 d7d536235.9%51.7%
E51Nimzo-Indian, 4.e3, Ragozin variation5650.0%57.1%
E52Nimzo-Indian, 4.e3, main line with ...b6121333.5%52.9%
E53Nimzo-Indian, 4.e3, Gligoric system with 7...Nbd713839.1%54.3%
E53Nimzo-Indian, 4.e3, Keres variation12834.4%46.9%
E53Nimzo-Indian, 4.e3, main line with ...c5204936.5%52.8%
E54Nimzo-Indian, 4.e3, Gligoric system with 7...dc277336.4%54.1%
E54Nimzo-Indian, 4.e3, Gligoric system, Smyslov variation6934.8%58.0%
E55Nimzo-Indian, 4.e3, Gligoric system, Bronstein variation315235.2%53.3%
E56Nimzo-Indian, 4.e3, main line with 7...Nc6144131.2%54.7%
E57Nimzo-Indian, 4.e3, main line with 8...dc and 9...cd3125.8%67.7%
E58Nimzo-Indian, 4.e3, main line with 8...Bxc3335129.6%49.4%
E59Nimzo-Indian, 4.e3, main line221430.8%53.9%
E60King's Indian defence226124.4%53.7%
E60King's Indian, 3.Nf3569430.2%55.5%
E60King's Indian, 3.g3293331.8%54.8%
E60King's Indian, 3.g3, counterthrust variation2030.0%50.0%
E60King's Indian, Anti-Gruenfeld19927.6%50.5%
E60King's Indian, Danube gambit2630.8%50.0%
E60Queen's pawn, Mengarini attack14824.3%50.0%
E61King's Indian defence, 3.Nc3166829.0%53.8%
E61King's Indian, Smyslov system16826.8%49.1%
E62King's Indian, fianchetto variation18029.4%53.6%
E62King's Indian, fianchetto with ...Nc635626.1%56.9%
E62King's Indian, fianchetto, Kavalek (Bronstein) variation118329.8%58.8%
E62King's Indian, fianchetto, Larsen system35929.0%53.2%
E62King's Indian, fianchetto, Simagin variation17928.5%67.3%
E62King's Indian, fianchetto, Uhlmann (Szabo) variation53130.3%57.9%
E62King's Indian, fianchetto, lesser Simagin (Spassky) variation48625.1%58.0%
E63King's Indian, fianchetto, Panno variation334028.6%57.1%
E64King's Indian, fianchetto, Yugoslav system20924.4%56.2%
E65King's Indian, fianchetto, Yugoslav, 7.O-O26930.5%58.7%
E66King's Indian, fianchetto, Yugoslav Panno53827.9%56.3%
E67King's Indian, fianchetto with ...Nd722229.3%61.9%
E67King's Indian, fianchetto, classical variation108232.5%55.8%
E68King's Indian, fianchetto, classical variation, 8.e4217328.9%58.7%
E69King's Indian, fianchetto, classical main line126830.4%60.0%
E70King's Indian, 4.e4101225.0%54.9%
E70King's Indian, Kramer system28922.8%53.3%
E70King's Indian, accelerated Averbakh system15828.5%50.3%
E71King's Indian, Makagonov system (5.h3)110026.9%55.8%
E72King's Indian with e4 & g36929.0%53.6%
E72King's Indian, Pomar system1553.3%60.0%
E73King's Indian, 5.Be212720.5%48.0%
E73King's Indian, Averbakh system109328.7%53.0%
E73King's Indian, Semi-Averbakh system7027.1%47.9%
E74King's Indian, Averbakh, 6...c532326.0%62.2%
E75King's Indian, Averbakh, main line5930.5%50.8%
E76King's Indian, Four pawns attack39433.8%58.5%
E76King's Indian, Four pawns attack, dynamic line18832.4%50.8%
E77King's Indian, Four pawns attack25333.6%53.6%
E77King's Indian, Four pawns attack, 6.Be2933.3%50.0%
E77King's Indian, Four pawns attack, Florentine gambit4129.3%41.5%
E78King's Indian, Four pawns attack, with Be2 and Nf34337.2%46.5%
E79King's Indian, Four pawns attack, main line12845.3%57.0%
E80King's Indian, Saemisch variation71824.0%55.7%
E81King's Indian, Saemisch, 5...O-O263725.4%54.0%
E81King's Indian, Saemisch, Byrne variation9129.7%52.2%
E82King's Indian, Saemisch, double fianchetto variation16529.7%59.7%
E83King's Indian, Saemisch, 6...Nc613619.1%56.6%
E83King's Indian, Saemisch, Panno formation25025.6%53.2%
E83King's Indian, Saemisch, Ruban variation1020.0%50.0%
E84King's Indian, Saemisch, Panno main line93021.3%52.5%
E85King's Indian, Saemisch, orthodox variation8627.9%55.8%
E86King's Indian, Saemisch, orthodox, 7.Nge2 c659123.0%55.7%
E87King's Indian, Saemisch, orthodox, 7.d557720.3%63.0%
E87King's Indian, Saemisch, orthodox, Bronstein variation1127.3%59.1%
E88King's Indian, Saemisch, orthodox, 7.d5 c655530.8%55.6%
E89King's Indian, Saemisch, orthodox main line8426.2%61.9%
E90King's Indian, 5.Nf3131823.4%54.8%
E90King's Indian, Larsen variation13927.3%54.7%
E90King's Indian, Zinnowitz variation11429.8%51.8%
E91King's Indian, 6.Be299025.4%59.6%
E91King's Indian, Kazakh variation70529.4%57.5%
E92King's Indian, Andersson variation49939.7%53.7%
E92King's Indian, Gligoric-Taimanov system303525.0%57.9%
E92King's Indian, Petrosian system20919.6%56.7%
E92King's Indian, Petrosian system, Stein variation124827.7%53.4%
E92King's Indian, classical variation2326.1%47.8%
E93King's Indian, Petrosian system, Keres variation2828.6%50.0%
E93King's Indian, Petrosian system, main line23924.3%55.2%
E94King's Indian, orthodox variation196331.5%57.2%
E94King's Indian, orthodox, 7...Nbd7267627.2%57.0%
E94King's Indian, orthodox, Donner variation25028.0%54.8%
E95King's Indian, orthodox, 7...Nbd7, 8.Re1100926.7%56.0%
E96King's Indian, orthodox, 7...Nbd7, main line22732.6%59.0%
E97King's Indian, orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation)908425.3%55.5%
E97King's Indian, orthodox, Aronin-Taimanov, bayonet attack330329.2%57.6%
E98King's Indian, orthodox, Aronin-Taimanov, 9.Ne1333121.7%59.4%
E99King's Indian, orthodox, Aronin-Taimanov, Benko attack15425.3%57.5%
E99King's Indian, orthodox, Aronin-Taimanov, main line13523.0%53.7%

Created in 2005-2013 by CCRL team
Last games added on August 20, 2019