CCRL 40/40
Downloads and Statistics
April 11, 2008
Testing summary:
Total: 114'872 games
played by 449 programs
16375 CPU days (X2 4600+)

White wins: 41'478 (36.1%)
Black wins: 31'357 (27.3%)
Draws: 42'037 (36.6%)
White score: 54.4%

Opening statistics

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

ECOOpeningNumber
of
games		DrawsWhite
score		Commented
PGN
A00Amar (Paris) opening1050.0%35.0%0.01 MB
A00Amar gambit10.0%0.0%0.00 MB
A00Amsterdam attack10.0%100.0%0.00 MB
A00Anderssen's opening540.0%20.0%0.01 MB
A00Anti-Borg (Desprez) opening10.0%0.0%0.00 MB
A00Benko's opening31737.2%51.4%0.22 MB
A00Benko's opening, reversed Alekhine944.4%44.4%0.01 MB
A00Clemenz (Mead's, Basman's or de Klerk's) opening2100.0%50.0%0.00 MB
A00Dunst (Sleipner, Heinrichsen) opening540.0%60.0%0.00 MB
A00Durkin's attack450.0%25.0%0.00 MB
A00Grob's attack333.3%50.0%0.00 MB
A00Mieses opening1100.0%50.0%0.00 MB
A00Novosibirsk opening1100.0%50.0%0.00 MB
A00Polish (Sokolsky) opening2133.3%31.0%0.02 MB
A00Polish, Outflank variation425.0%62.5%0.00 MB
A00Saragossa opening862.5%68.8%0.01 MB
A00Van't Kruijs opening922.2%55.6%0.01 MB
A01Nimzovich-Larsen attack2317.4%43.5%0.02 MB
A01Nimzovich-Larsen attack, Dutch variation80.0%75.0%0.01 MB
A01Nimzovich-Larsen attack, English variation1127.3%59.1%0.01 MB
A01Nimzovich-Larsen attack, Indian variation2213.6%43.2%0.02 MB
A01Nimzovich-Larsen attack, classical variation3737.8%54.1%0.03 MB
A01Nimzovich-Larsen attack, modern variation9134.1%53.3%0.07 MB
A01Nimzovich-Larsen attack, symmetrical variation30.0%33.3%0.00 MB
A02Bird's opening540.0%60.0%0.00 MB
A02Bird, From gambit, Lasker variation10.0%100.0%0.00 MB
A03Bird's opening425.0%37.5%0.00 MB
A04Reti opening107336.9%53.7%0.72 MB
A04Reti v Dutch6025.0%60.8%0.05 MB
A04Reti, Lisitsin gambit deferred250.0%25.0%0.00 MB
A04Reti, Pirc-Lisitsin gambit1241.7%70.8%0.01 MB
A05Reti opening58238.0%55.8%0.39 MB
A05Reti, King's Indian attack8447.6%51.2%0.06 MB
A05Reti, King's Indian attack, Reti-Smyslov variation1145.5%50.0%0.01 MB
A05Reti, King's Indian attack, Spassky's variation4932.7%53.1%0.04 MB
A06Reti opening21638.0%50.9%0.15 MB
A06Reti, Nimzovich-Larsen attack18433.2%47.6%0.13 MB
A06Reti, old Indian attack2133.3%40.5%0.02 MB
A06Santasiere's folly1323.1%50.0%0.01 MB
A06Tennison (Lemberg, Zukertort) gambit10.0%100.0%0.00 MB
A07Reti, King's Indian attack6732.8%46.3%0.05 MB
A07Reti, King's Indian attack (Barcza system)60141.3%54.7%0.43 MB
A07Reti, King's Indian attack (with ...c5)5444.4%51.9%0.04 MB
A07Reti, King's Indian attack, Keres variation4744.7%43.6%0.04 MB
A07Reti, King's Indian attack, Pachman system728.6%57.1%0.01 MB
A07Reti, King's Indian attack, Yugoslav variation22036.8%47.5%0.16 MB
A08Reti, King's Indian attack6134.4%54.9%0.05 MB
A08Reti, King's Indian attack, French variation1323.1%42.3%0.01 MB
A09Reti accepted3348.5%48.5%0.03 MB
A09Reti accepted, Keres variation922.2%77.8%0.01 MB
A09Reti opening2245.5%54.5%0.02 MB
A09Reti, advance variation7343.8%47.9%0.06 MB
A10English opening33342.9%53.9%0.21 MB
A10English, Adorjan defence1650.0%56.3%0.01 MB
A10English, Anglo-Dutch defense3336.4%51.5%0.03 MB
A10English, Jaenisch gambit20.0%100.0%0.00 MB
A11English, Caro-Kann defensive system6844.1%54.4%0.05 MB
A12English, Bled variation520.0%90.0%0.00 MB
A12English, Capablanca's variation1154.5%36.4%0.01 MB
A12English, Caro-Kann defensive system862.5%56.3%0.01 MB
A12English, Caro-Kann defensive system, Bogolyubov variation728.6%71.4%0.01 MB
A12English, London defensive system1030.0%25.0%0.01 MB
A12English, New York (London) defensive system366.7%33.3%0.00 MB
A12English, Torre defensive system1353.8%50.0%0.01 MB
A13English opening36234.0%50.7%0.25 MB
A13English opening, Agincourt variation11646.6%54.3%0.10 MB
A13English, Kurajica defence425.0%37.5%0.00 MB
A13English, Neo-Catalan2740.7%68.5%0.02 MB
A13English, Neo-Catalan accepted3641.7%54.2%0.03 MB
A13English, Romanishin gambit785.7%57.1%0.01 MB
A13English, Wimpey system1154.5%63.6%0.01 MB
A14English, Neo-Catalan declined2853.6%55.4%0.02 MB
A14English, Symmetrical, Keres defence10850.9%55.1%0.08 MB
A15English opening73938.7%53.0%0.50 MB
A15English, 1...Nf6 (Anglo-Indian defense)14529.0%57.2%0.10 MB
A16English opening13028.5%52.7%0.09 MB
A16English, Anglo-Gruenfeld defense742.9%50.0%0.01 MB
A16English, Anglo-Gruenfeld, Czech defense650.0%41.7%0.01 MB
A16English, Anglo-Gruenfeld, Smyslov defense560.0%70.0%0.00 MB
A17English opening3243.8%56.3%0.02 MB
A17English, Nimzo-English opening7230.6%59.7%0.05 MB
A17English, Queens Indian formation1338.5%50.0%0.01 MB
A17English, Queens Indian, Romanishin variation366.7%33.3%0.00 MB
A18English, Mikenas-Carls variation10.0%100.0%0.00 MB
A18English, Mikenas-Carls, Flohr variation520.0%70.0%0.00 MB
A19English, Mikenas-Carls, Sicilian variation1936.8%44.7%0.02 MB
A20English opening88240.0%54.8%0.56 MB
A20English, Nimzovich variation616.7%91.7%0.01 MB
A20English, Nimzovich, Flohr variation1526.7%40.0%0.01 MB
A21English opening21730.0%59.2%0.14 MB
A21English, Keres variation250.0%25.0%0.00 MB
A21English, Kramnik-Shirov counterattack7631.6%51.3%0.06 MB
A21English, Smyslov defence520.0%30.0%0.00 MB
A21English, Troeger defence1625.0%62.5%0.01 MB
A22English opening11531.3%55.7%0.08 MB
A22English, Bremen, Smyslov system21534.4%47.9%0.14 MB
A22English, Bremen, reverse dragon10338.8%49.5%0.08 MB
A22English, Carls' Bremen system3435.3%61.8%0.03 MB
A23English, Bremen system, Keres variation2920.7%62.1%0.02 MB
A24English, Bremen system with ...g6850.0%62.5%0.01 MB
A25English, Sicilian reversed8931.5%48.3%0.06 MB
A25English, closed system15535.5%57.1%0.11 MB
A25English, closed system (without ...d6)2138.1%57.1%0.02 MB
A25English, closed, 5.Rb13551.4%54.3%0.03 MB
A25English, closed, 5.Rb1 Taimanov variation10.0%0.0%0.00 MB
A25English, closed, Hort variation250.0%25.0%0.00 MB
A26English, Botvinnik system3125.8%38.7%0.02 MB
A26English, closed system3525.7%52.9%0.03 MB
A27English, three knights system3727.0%51.4%0.03 MB
A28English, Bradley Beach variation933.3%38.9%0.01 MB
A28English, Nenarokov variation1145.5%68.2%0.01 MB
A28English, four knights system6246.8%49.2%0.05 MB
A28English, four knights, 4.e321434.6%54.2%0.14 MB
A28English, four knights, Capablanca variation4042.5%53.8%0.03 MB
A28English, four knights, Marini variation5444.4%46.3%0.04 MB
A28English, four knights, Nimzovich variation3534.3%42.9%0.03 MB
A28English, four knights, Romanishin variation8150.6%57.4%0.06 MB
A28English, four knights, Stean variation2138.1%61.9%0.01 MB
A29English, four knights, kingside fianchetto125037.5%51.8%0.76 MB
A30English, symmetrical variation71335.8%55.2%0.46 MB
A30English, symmetrical, hedgehog system45538.7%57.1%0.30 MB
A30English, symmetrical, hedgehog, flexible formation7443.2%56.8%0.05 MB
A31English, symmetrical, Benoni formation12044.2%58.8%0.10 MB
A32English, symmetrical variation2035.0%62.5%0.02 MB
A33English, symmetrical variation16144.1%55.6%0.11 MB
A33English, symmetrical, Geller variation10530.5%56.2%0.08 MB
A34English, symmetrical variation22134.4%56.1%0.15 MB
A34English, symmetrical, Rubinstein system1540.0%46.7%0.01 MB
A34English, symmetrical, three knights system8342.2%60.8%0.07 MB
A35English, symmetrical variation3528.6%48.6%0.04 MB
A35English, symmetrical, four knights system27440.5%52.7%0.19 MB
A36English, symmetrical variation2420.8%68.8%0.02 MB
A36English, symmetrical, Botvinnik system742.9%50.0%0.01 MB
A36English, symmetrical, Botvinnik system reversed70.0%42.9%0.01 MB
A36English, ultra-symmetrical variation7525.3%46.0%0.06 MB
A37English, symmetrical variation3625.0%54.2%0.03 MB
A37English, symmetrical, Botvinnik system reversed6526.2%54.6%0.05 MB
A38English, symmetrical variation7544.0%47.3%0.06 MB
A38English, symmetrical, main line with b31100.0%50.0%0.00 MB
A38English, symmetrical, main line with d350.0%0.0%0.01 MB
A39English, symmetrical, main line with d48444.0%58.9%0.06 MB
A40Beefeater defence333.3%83.3%0.00 MB
A40Modern defence4626.1%69.6%0.03 MB
A40Polish defence580.0%60.0%0.01 MB
A40Queen's pawn60838.3%56.0%0.42 MB
A40Queen's pawn, Charlick (Englund) gambit1100.0%50.0%0.00 MB
A40Queen's pawn, English defence1625.0%68.8%0.01 MB
A40Queen's pawn, Franco-Indian (Keres) defence9240.2%54.9%0.07 MB
A40Queen's pawn, Keres defence15736.3%58.3%0.11 MB
A40Queen's pawn, Lundin (Kevitz-Mikenas) defence1612.5%62.5%0.01 MB
A41Old Indian defence3534.3%62.9%0.03 MB
A41Old Indian, Tartakower (Wade) variation4835.4%59.4%0.03 MB
A41Queen's Pawn6431.3%51.6%0.05 MB
A41Robatsch defence, Rossolimo variation837.5%56.3%0.01 MB
A42Modern defence, Averbakh system1442.9%64.3%0.02 MB
A42Modern defence, Averbakh system, Kotov variation10.0%100.0%0.00 MB
A42Pterodactyl defence1850.0%63.9%0.02 MB
A43Hawk (Habichd) defence10.0%0.0%0.00 MB
A43Old Benoni defence7828.2%59.0%0.06 MB
A43Old Benoni, Franco-Benoni defence250.0%25.0%0.00 MB
A43Old Benoni, Mujannah formation425.0%87.5%0.00 MB
A43Old Benoni, Schmid's system20.0%0.0%0.00 MB
A44Old Benoni defence4100.0%50.0%0.00 MB
A44Semi-Benoni (`blockade variation')250.0%75.0%0.00 MB
A45Blackmar-Diemer gambit911.1%50.0%0.01 MB
A45Canard opening1030.0%25.0%0.01 MB
A45Queen's pawn game40938.6%53.1%0.28 MB
A45Trompovsky attack (Ruth, Opovcensky opening)21632.9%52.5%0.15 MB
A46Queen's pawn game36132.4%56.4%0.24 MB
A46Queen's pawn, Torre attack5641.1%49.1%0.04 MB
A46Queen's pawn, Torre attack, Wagner gambit10.0%100.0%0.00 MB
A46Queen's pawn, Yusupov-Rubinstein system4438.6%62.5%0.04 MB
A47Queen's Indian defence8936.0%59.6%0.07 MB
A47Queen's Indian, Marienbad system1931.6%57.9%0.02 MB
A47Queen's Indian, Marienbad system, Berg variation333.3%50.0%0.00 MB
A48King's Indian, East Indian defence16336.8%50.3%0.12 MB
A48King's Indian, London system7241.7%50.0%0.06 MB
A48King's Indian, Torre attack12631.7%55.6%0.09 MB
A49King's Indian, fianchetto without c414635.6%58.9%0.10 MB
A50Kevitz-Trajkovich defence4143.9%48.8%0.03 MB
A50Queen's Indian accelerated2231.8%52.3%0.02 MB
A50Queen's pawn game10329.1%60.2%0.07 MB
A51Budapest defence declined20.0%50.0%0.00 MB
A51Budapest, Fajarowicz variation50.0%60.0%0.00 MB
A52Budapest, Adler variation850.0%25.0%0.01 MB
A52Budapest, Alekhine, Abonyi variation20.0%50.0%0.00 MB
A52Budapest, Rubinstein variation850.0%62.5%0.01 MB
A53Old Indian defence14032.1%59.6%0.10 MB
A53Old Indian, Janowski variation922.2%66.7%0.01 MB
A54Old Indian, Ukrainian variation1060.0%70.0%0.01 MB
A54Old Indian, Ukrainian variation, 4.Nf31145.5%59.1%0.01 MB
A55Old Indian, main line6446.9%60.9%0.05 MB
A56Benoni defence6729.9%55.2%0.05 MB
A56Benoni defence, Hromodka system1915.8%76.3%0.02 MB
A56Czech Benoni defence1931.6%78.9%0.02 MB
A56Czech Benoni, King's Indian system425.0%37.5%0.00 MB
A56Vulture defence1100.0%50.0%0.00 MB
A57Benko gambit5123.5%62.7%0.04 MB
A57Benko gambit half accepted8030.0%46.3%0.06 MB
A57Benko gambit, Zaitsev system812.5%6.3%0.01 MB
A58Benko gambit accepted6741.8%53.7%0.04 MB
A58Benko gambit, fianchetto variation1947.4%50.0%0.02 MB
A59Benko gambit10.0%0.0%0.00 MB
A59Benko gambit, 7.e41100.0%50.0%0.00 MB
A59Benko gambit, main line1428.6%64.3%0.01 MB
A60Benoni defence1330.8%69.2%0.01 MB
A61Benoni defence6918.8%71.7%0.05 MB
A61Benoni, Nimzovich (knight's tour) variation4723.4%60.6%0.03 MB
A61Benoni, Uhlmann variation850.0%50.0%0.01 MB
A61Benoni, fianchetto variation20.0%100.0%0.00 MB
A62Benoni, fianchetto variation5330.2%62.3%0.04 MB
A63Benoni, fianchetto, 9...Nbd7520.0%70.0%0.01 MB
A64Benoni, fianchetto, 11...Re81618.8%34.4%0.01 MB
A65Benoni, 6.e420.0%0.0%0.00 MB
A67Benoni, Taimanov variation40.0%100.0%0.00 MB
A69Benoni, four pawns attack, main line955.6%50.0%0.01 MB
A70Benoni, classical with e4 and Nf38427.4%55.4%0.05 MB
A70Benoni, classical without 9.O-O10.0%0.0%0.00 MB
A71Benoni, classical, 8.Bg51513.3%46.7%0.01 MB
A72Benoni, classical without 9.O-O812.5%81.3%0.01 MB
A73Benoni, classical, 9.O-O70.0%71.4%0.01 MB
A74Benoni, classical, 9...a6, 10.a410.0%100.0%0.00 MB
A75Benoni, classical with ...a6 and 10...Bg4922.2%55.6%0.01 MB
A76Benoni, classical, 9...Re81020.0%30.0%0.01 MB
A77Benoni, classical, 9...Re8, 10.Nd21921.1%68.4%0.01 MB
A78Benoni, classical with ...Re8 and ...Na6944.4%55.6%0.01 MB
A79Benoni, classical, 11.f31241.7%54.2%0.01 MB
A80Dutch5131.4%64.7%0.04 MB
A80Dutch, 2.Bg5 variation1729.4%55.9%0.01 MB
A80Dutch, Manhattan (Alapin, Ulvestad) variation1100.0%50.0%0.00 MB
A81Dutch defence12834.4%56.3%0.10 MB
A81Dutch defence, Blackburne variation10.0%0.0%0.00 MB
A82Dutch, Balogh defence10.0%100.0%0.00 MB
A82Dutch, Staunton gambit, Tartakower variation1100.0%50.0%0.00 MB
A83Dutch, Staunton gambit, Staunton's line1100.0%50.0%0.00 MB
A84Dutch defence5433.3%57.4%0.04 MB
A84Dutch defence, Rubinstein variation2740.7%50.0%0.02 MB
A84Dutch, Staunton gambit deferred875.0%37.5%0.01 MB
A85Dutch with c4 & Nc31020.0%60.0%0.01 MB
A86Dutch with c4 & g3450.0%25.0%0.00 MB
A86Dutch, Leningrad variation650.0%58.3%0.01 MB
A87Dutch, Leningrad, main variation1662.5%62.5%0.02 MB
A88Dutch, Leningrad, main variation with c63426.5%72.1%0.03 MB
A89Dutch, Leningrad, main variation with Nc62433.3%66.7%0.02 MB
A90Dutch defence4330.2%59.3%0.04 MB
A90Dutch defence, Dutch-Indian (Nimzo-Dutch) variation425.0%37.5%0.01 MB
A90Dutch-Indian, Alekhine variation40.0%50.0%0.00 MB
A91Dutch defence333.3%83.3%0.00 MB
A92Dutch defence10.0%100.0%0.00 MB
A92Dutch, stonewall variation1100.0%50.0%0.00 MB
A92Dutch, stonewall with Nc3333.3%50.0%0.00 MB
A93Dutch, stonewall, Botwinnik variation825.0%50.0%0.01 MB
A94Dutch, stonewall with Ba33100.0%50.0%0.00 MB
A95Dutch, stonewall with Nc3812.5%43.8%0.01 MB
A96Dutch, classical variation1030.0%65.0%0.01 MB
A97Dutch, Ilyin-Genevsky variation10.0%100.0%0.00 MB
A97Dutch, Ilyin-Genevsky, Winter variation757.1%57.1%0.01 MB
A98Dutch, Ilyin-Genevsky variation with Qc21100.0%50.0%0.00 MB
A99Dutch, Ilyin-Genevsky variation with b3560.0%70.0%0.01 MB
B00KP, Nimzovich defence2240.9%61.4%0.02 MB
B00KP, Nimzovich defence, Bogolyubov variation520.0%70.0%0.00 MB
B00King's pawn opening11326.5%58.4%0.08 MB
B00Lemming defence250.0%25.0%0.00 MB
B00Owen defence3333.3%65.2%0.03 MB
B00Reversed Grob (Borg/Basman defence/macho Grob)425.0%87.5%0.00 MB
B01Scandinavian (centre counter) defence8740.2%56.9%0.06 MB
B01Scandinavian defence3732.4%54.1%0.03 MB
B01Scandinavian defence, Gruenfeld variation20.0%50.0%0.00 MB
B01Scandinavian defence, Lasker variation1338.5%65.4%0.01 MB
B01Scandinavian gambit1553.3%60.0%0.02 MB
B01Scandinavian, Anderssen counter-attack orthodox attack10.0%100.0%0.00 MB
B01Scandinavian, Anderssen counter-attack, Collijn variation10.0%100.0%0.00 MB
B01Scandinavian, Icelandic gambit1050.0%55.0%0.01 MB
B01Scandinavian, Marshall variation8341.0%63.9%0.05 MB
B01Scandinavian, Pytel-Wade variation2152.4%54.8%0.02 MB
B02Alekhine's defence1010.0%35.0%0.01 MB
B02Alekhine's defence, Brooklyn defence520.0%30.0%0.01 MB
B02Alekhine's defence, Maroczy variation1330.8%53.8%0.01 MB
B02Alekhine's defence, Saemisch attack560.0%50.0%0.00 MB
B02Alekhine's defence, Scandinavian variation70.0%42.9%0.01 MB
B02Alekhine's defence, Two pawns' (Lasker's) attack1145.5%59.1%0.01 MB
B03Alekhine's defence450.0%75.0%0.00 MB
B03Alekhine's defence, Balogh variation10.0%100.0%0.00 MB
B03Alekhine's defence, O'Sullivan gambit366.7%66.7%0.00 MB
B03Alekhine's defence, exchange variation5131.4%56.9%0.04 MB
B03Alekhine's defence, exchange, Karpov variation1100.0%50.0%0.00 MB
B03Alekhine's defence, four pawns attack728.6%57.1%0.01 MB
B03Alekhine's defence, four pawns attack, 7.Be31250.0%75.0%0.01 MB
B03Alekhine's defence, four pawns attack, fianchetto variation40.0%50.0%0.00 MB
B04Alekhine's defence, modern variation1346.2%69.2%0.01 MB
B04Alekhine's defence, modern, Keres variation1060.0%60.0%0.01 MB
B04Alekhine's defence, modern, Larsen variation2839.3%62.5%0.02 MB
B04Alekhine's defence, modern, Schmid variation1136.4%54.5%0.01 MB
B04Alekhine's defence, modern, fianchetto variation2035.0%67.5%0.02 MB
B05Alekhine's defence, modern variation, 4...Bg45332.1%68.9%0.04 MB
B05Alekhine's defence, modern, Alekhine variation1100.0%50.0%0.00 MB
B05Alekhine's defence, modern, Flohr variation812.5%68.8%0.01 MB
B06Robatsch (modern) defence19328.5%57.8%0.14 MB
B06Robatsch defence2737.0%51.9%0.02 MB
B06Robatsch defence, Gurgenidze variation30.0%66.7%0.00 MB
B06Robatsch defence, Pseudo-Austrian attack2218.2%72.7%0.02 MB
B06Robatsch defence, Two knights variation40.0%75.0%0.00 MB
B06Robatsch defence, Two knights, Suttles variation4837.5%56.3%0.04 MB
B06Robatsch defence, three pawns attack1100.0%50.0%0.00 MB
B07Pirc defence7328.8%52.7%0.05 MB
B07Pirc, 150 attack5341.5%58.5%0.04 MB
B07Pirc, Byrne variation3148.4%59.7%0.03 MB
B07Pirc, Holmov system2100.0%50.0%0.00 MB
B07Pirc, Sveshnikov system2634.6%44.2%0.02 MB
B07Pirc, Ufimtsev-Pytel variation4431.8%54.5%0.04 MB
B07Pirc, bayonet (Mariotti) attack2100.0%50.0%0.00 MB
B07Robatsch defence, Geller's system3633.3%63.9%0.03 MB
B08Pirc, classical (two knights) system4332.6%62.8%0.03 MB
B08Pirc, classical system, 5.Be213933.1%54.7%0.10 MB
B08Pirc, classical, h3 system3748.6%48.6%0.03 MB
B09Pirc, Austrian attack1435.7%53.6%0.01 MB
B09Pirc, Austrian attack, 6.Bd34740.4%45.7%0.04 MB
B09Pirc, Austrian attack, 6.Be3922.2%66.7%0.01 MB
B09Pirc, Austrian attack, 6.e5560.0%50.0%0.01 MB
B09Pirc, Austrian attack, Ljubojevic variation10.0%0.0%0.00 MB
B09Pirc, Austrian attack, dragon formation2650.0%67.3%0.02 MB
B10Caro-Kann defence35434.2%57.2%0.23 MB
B10Caro-Kann, Goldman (Spielmann) variation425.0%37.5%0.00 MB
B10Caro-Kann, Two knights variation4940.8%55.1%0.04 MB
B10Caro-Kann, anti-Caro-Kann defence12128.9%59.9%0.08 MB
B10Caro-Kann, anti-anti-Caro-Kann defence10145.5%49.5%0.07 MB
B10Caro-Kann, closed (Breyer) variation3735.1%50.0%0.03 MB
B11Caro-Kann, Two knights, 3...Bg44030.0%57.5%0.03 MB
B12Caro-Kann defence5831.0%55.2%0.04 MB
B12Caro-Kann, 3.Nd24643.5%54.3%0.03 MB
B12Caro-Kann, Edinburgh variation450.0%25.0%0.00 MB
B12Caro-Kann, Tartakower (fantasy) variation11040.9%55.9%0.07 MB
B12Caro-Kann, advance variation73133.1%56.4%0.45 MB
B12Caro-Kann, advance, Short variation450.0%75.0%0.00 MB
B12de Bruycker defence30.0%66.7%0.00 MB
B13Caro-Kann, Panov-Botvinnik attack7051.4%48.6%0.05 MB
B13Caro-Kann, Panov-Botvinnik, Czerniak variation333.3%16.7%0.00 MB
B13Caro-Kann, Panov-Botvinnik, Gunderam attack20.0%50.0%0.00 MB
B13Caro-Kann, Panov-Botvinnik, Herzog defence10.0%0.0%0.00 MB
B13Caro-Kann, Panov-Botvinnik, normal variation812.5%68.8%0.01 MB
B13Caro-Kann, exchange variation9246.7%50.5%0.07 MB
B13Caro-Kann, exchange, Rubinstein variation1428.6%35.7%0.01 MB
B14Caro-Kann, Panov-Botvinnik attack, 5...e634242.4%56.0%0.22 MB
B14Caro-Kann, Panov-Botvinnik attack, 5...g64047.5%51.3%0.03 MB
B15Caro-Kann defence4131.7%47.6%0.03 MB
B15Caro-Kann, Alekhine gambit333.3%83.3%0.00 MB
B15Caro-Kann, Forgacs variation4334.9%47.7%0.03 MB
B15Caro-Kann, Gurgenidze counter-attack20.0%50.0%0.00 MB
B15Caro-Kann, Gurgenidze system5635.7%58.9%0.04 MB
B15Caro-Kann, Rasa-Studier gambit450.0%25.0%0.00 MB
B15Caro-Kann, Tartakower (Nimzovich) variation2236.4%59.1%0.02 MB
B16Caro-Kann, Bronstein-Larsen variation2222.7%65.9%0.02 MB
B17Caro-Kann, Steinitz variation43135.7%54.3%0.28 MB
B18Caro-Kann, classical variation7346.6%50.7%0.06 MB
B18Caro-Kann, classical, 6.h46432.8%55.5%0.05 MB
B18Caro-Kann, classical, Flohr variation20.0%50.0%0.00 MB
B18Caro-Kann, classical, Maroczy attack250.0%25.0%0.00 MB
B19Caro-Kann, classical, 7...Nd7955.6%50.0%0.01 MB
B19Caro-Kann, classical, Spassky variation66439.6%53.4%0.40 MB
B20Sicilian defence31234.3%49.2%0.20 MB
B20Sicilian, Keres variation (2.Ne2)4341.9%58.1%0.03 MB
B20Sicilian, Steinitz variation12445.2%46.8%0.09 MB
B20Sicilian, wing gambit250.0%75.0%0.00 MB
B20Sicilian, wing gambit, Carlsbad variation20.0%50.0%0.00 MB
B21Sicilian, Grand Prix attack17236.0%51.7%0.11 MB
B21Sicilian, Smith-Morra gambit1952.6%57.9%0.02 MB
B22Sicilian, 2.c3, Heidenfeld variation250.0%75.0%0.00 MB
B22Sicilian, Alapin's variation (2.c3)71538.5%53.6%0.48 MB
B23Sicilian, Grand Prix attack5529.1%50.9%0.04 MB
B23Sicilian, Grand Prix attack, Schofman variation450.0%50.0%0.00 MB
B23Sicilian, chameleon variation4339.5%61.6%0.03 MB
B23Sicilian, closed39832.2%52.8%0.26 MB
B23Sicilian, closed, 2...Nc613039.2%53.5%0.09 MB
B23Sicilian, closed, Korchnoi variation540.0%40.0%0.01 MB
B24Sicilian, closed4037.5%48.8%0.03 MB
B25Sicilian, closed2035.0%67.5%0.02 MB
B25Sicilian, closed, 6.Ne2 e5 (Botvinnik)850.0%50.0%0.01 MB
B25Sicilian, closed, 6.f43528.6%48.6%0.03 MB
B25Sicilian, closed, 6.f4 e5 (Botvinnik)450.0%75.0%0.01 MB
B26Sicilian, closed, 6.Be34932.7%42.9%0.03 MB
B27Sicilian defence250.0%75.0%0.00 MB
B27Sicilian, Hungarian variation15834.2%57.0%0.11 MB
B27Sicilian, Katalimov variation475.0%37.5%0.00 MB
B27Sicilian, Quinteros variation425.0%87.5%0.00 MB
B28Sicilian, O'Kelly variation1154.5%63.6%0.01 MB
B29Sicilian, Nimzovich-Rubinstein variation1233.3%66.7%0.01 MB
B29Sicilian, Nimzovich-Rubinstein; Rubinstein counter-gambit1216.7%41.7%0.01 MB
B30Sicilian defence30438.5%50.5%0.23 MB
B30Sicilian, Nimzovich-Rossolimo attack (without ...d6)37835.2%53.3%0.26 MB
B31Sicilian, Nimzovich-Rossolimo attack (with ...g6, without ...d6)31536.2%55.9%0.22 MB
B31Sicilian, Nimzovich-Rossolimo attack, Gurgenidze variation1100.0%50.0%0.00 MB
B32Sicilian defence10025.0%58.5%0.07 MB
B32Sicilian, Flohr variation1330.8%61.5%0.01 MB
B32Sicilian, Labourdonnais-Loewenthal (Kalashnikov) variation7138.0%59.9%0.06 MB
B32Sicilian, Labourdonnais-Loewenthal variation2050.0%65.0%0.02 MB
B32Sicilian, Nimzovich variation30.0%33.3%0.00 MB
B33Sicilian defence9334.4%50.5%0.07 MB
B33Sicilian, Pelikan (Lasker/Sveshnikov) variation9424.5%52.7%0.07 MB
B33Sicilian, Pelikan, Bird variation3435.3%58.8%0.02 MB
B33Sicilian, Pelikan, Chelyabinsk variation60029.7%60.8%0.35 MB
B33Sicilian, Sveshnikov variation27537.5%51.8%0.16 MB
B34Sicilian, accelerated fianchetto, exchange variation10.0%100.0%0.00 MB
B34Sicilian, accelerated fianchetto, modern variation3839.5%48.7%0.03 MB
B35Sicilian, accelerated fianchetto, modern variation with Bc411442.1%50.9%0.08 MB
B36Sicilian, accelerated fianchetto, Gurgenidze variation3625.0%70.8%0.03 MB
B36Sicilian, accelerated fianchetto, Maroczy bind7347.9%52.7%0.05 MB
B37Sicilian, accelerated fianchetto, Maroczy bind, 5...Bg71060.0%50.0%0.01 MB
B38Sicilian, accelerated fianchetto, Maroczy bind, 6.Be38835.2%59.7%0.06 MB
B39Sicilian, accelerated fianchetto, Breyer variation2646.2%50.0%0.02 MB
B40Sicilian defence71633.2%54.7%0.49 MB
B40Sicilian, Anderssen variation11736.8%56.0%0.08 MB
B40Sicilian, Marshall variation10.0%100.0%0.00 MB
B40Sicilian, Pin variation (Sicilian counter-attack)10.0%100.0%0.00 MB
B40Sicilian, Pin, Koch variation425.0%87.5%0.00 MB
B41Sicilian, Kan variation1827.8%58.3%0.02 MB
B41Sicilian, Kan, Maroczy bind (Reti variation)4129.3%51.2%0.04 MB
B41Sicilian, Kan, Maroczy bind - Bronstein variation250.0%25.0%0.00 MB
B42Sicilian, Kan, 5.Bd330535.4%58.4%0.20 MB
B42Sicilian, Kan, Gipslis variation1926.3%65.8%0.01 MB
B42Sicilian, Kan, Polugaievsky variation17635.8%54.8%0.13 MB
B42Sicilian, Kan, Swiss cheese variation2138.1%61.9%0.02 MB
B43Sicilian, Kan, 5.Nc329437.8%56.6%0.20 MB
B44Sicilian defence11735.9%49.6%0.08 MB
B44Sicilian, Szen (`anti-Taimanov') variation9742.3%49.0%0.07 MB
B44Sicilian, Szen variation, Dely-Kasparov gambit250.0%75.0%0.00 MB
B44Sicilian, Szen, hedgehog variation5937.3%61.0%0.04 MB
B45Sicilian, Taimanov variation50235.5%57.4%0.31 MB
B45Sicilian, Taimanov, American attack520.0%30.0%0.00 MB
B46Sicilian, Taimanov variation76837.1%55.3%0.47 MB
B47Sicilian, Taimanov (Bastrikov) variation111336.8%54.8%0.70 MB
B48Sicilian, Taimanov variation63736.3%52.0%0.40 MB
B49Sicilian, Taimanov variation15937.1%56.9%0.11 MB
B50Sicilian35033.1%54.6%0.25 MB
B51Sicilian, Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack15342.5%54.6%0.11 MB
B52Sicilian, Canal-Sokolsky attack, 3...Bd79053.3%54.4%0.07 MB
B52Sicilian, Canal-Sokolsky attack, Bronstein gambit2142.9%64.3%0.02 MB
B52Sicilian, Canal-Sokolsky attack, Sokolsky variation7241.7%56.9%0.05 MB
B53Sicilian, Chekhover variation7834.6%51.9%0.05 MB
B53Sicilian, Chekhover, Zaitsev variation30.0%66.7%0.00 MB
B54Sicilian19734.5%54.8%0.15 MB
B54Sicilian, Prins (Moscow) variation6336.5%57.9%0.05 MB
B55Sicilian, Prins variation, Venice attack560.0%70.0%0.01 MB
B56Sicilian29032.8%54.0%0.19 MB
B56Sicilian, Venice attack2055.0%47.5%0.01 MB
B57Sicilian, Magnus Smith trap450.0%25.0%0.00 MB
B57Sicilian, Sozin, Benko variation25541.6%50.6%0.18 MB
B57Sicilian, Sozin, not Scheveningen2250.0%61.4%0.02 MB
B58Sicilian, Boleslavsky variation7745.5%44.8%0.06 MB
B58Sicilian, Boleslavsky, Louma variation10.0%100.0%0.00 MB
B58Sicilian, classical2254.5%50.0%0.02 MB
B59Sicilian, Boleslavsky variation, 7.Nb31118.2%54.5%0.01 MB
B60Sicilian, Richter-Rauzer4837.5%68.8%0.03 MB
B60Sicilian, Richter-Rauzer, Bondarevsky variation30.0%33.3%0.00 MB
B60Sicilian, Richter-Rauzer, Larsen variation1816.7%58.3%0.01 MB
B61Sicilian, Richter-Rauzer, Larsen variation, 7.Qd24334.9%54.7%0.03 MB
B62Sicilian, Richter-Rauzer, 6...e62030.0%55.0%0.02 MB
B62Sicilian, Richter-Rauzer, Keres variation1414.3%50.0%0.01 MB
B62Sicilian, Richter-Rauzer, Margate (Alekhine) variation1118.2%36.4%0.01 MB
B62Sicilian, Richter-Rauzer, Podvebrady variation1070.0%45.0%0.01 MB
B63Sicilian, Richter-Rauzer, Rauzer attack2722.2%66.7%0.02 MB
B63Sicilian, Richter-Rauzer, Rauzer attack, 7...Be721733.6%54.6%0.14 MB
B64Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9.f49241.3%48.9%0.06 MB
B64Sicilian, Richter-Rauzer, Rauzer attack, Geller variation1100.0%50.0%0.00 MB
B65Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9...Nxd415938.4%56.9%0.10 MB
B66Sicilian, Richter-Rauzer, Rauzer attack, 7...a6273531.6%51.1%1.52 MB
B67Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 8...Bd777829.7%54.0%0.46 MB
B68Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 9...Be72729.6%66.7%0.02 MB
B69Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 11.Bxf64829.2%64.6%0.03 MB
B70Sicilian, dragon variation7433.8%52.0%0.06 MB
B71Sicilian, dragon, Levenfish variation616.7%58.3%0.00 MB
B72Sicilian, dragon, 6.Be3944.4%44.4%0.01 MB
B72Sicilian, dragon, classical attack666.7%50.0%0.01 MB
B72Sicilian, dragon, classical, Amsterdam variation366.7%33.3%0.00 MB
B72Sicilian, dragon, classical, Grigoriev variation1100.0%50.0%0.00 MB
B72Sicilian, dragon, classical, Nottingham variation250.0%75.0%0.00 MB
B73Sicilian, dragon, classical, 8.O-O3135.5%53.2%0.02 MB
B73Sicilian, dragon, classical, Richter variation825.0%62.5%0.01 MB
B73Sicilian, dragon, classical, Zollner gambit540.0%60.0%0.01 MB
B74Sicilian, dragon, classical, 9.Nb32035.0%42.5%0.02 MB
B74Sicilian, dragon, classical, Alekhine variation20.0%100.0%0.00 MB
B74Sicilian, dragon, classical, Reti-Tartakower variation520.0%70.0%0.01 MB
B75Sicilian, dragon, Yugoslav attack2733.3%61.1%0.02 MB
B76Sicilian, dragon, Yugoslav attack, 7...O-O2722.2%44.4%0.02 MB
B76Sicilian, dragon, Yugoslav attack, Rauser variation13026.2%66.2%0.08 MB
B77Sicilian, dragon, Yugoslav attack, 9...Bd72646.2%53.8%0.02 MB
B77Sicilian, dragon, Yugoslav attack, 9.Bc4837.5%31.3%0.01 MB
B78Sicilian, dragon, Yugoslav attack, 10.O-O-O4820.8%47.9%0.03 MB
B79Sicilian, dragon, Yugoslav attack, 12.h4616.7%58.3%0.01 MB
B80Sicilian, Scheveningen variation30627.8%54.4%0.19 MB
B80Sicilian, Scheveningen, English variation5225.0%54.8%0.03 MB
B80Sicilian, Scheveningen, Vitolins variation250.0%25.0%0.00 MB
B80Sicilian, Scheveningen, fianchetto variation4045.0%45.0%0.03 MB
B81Sicilian, Scheveningen, Keres attack44432.0%61.5%0.26 MB
B82Sicilian, Scheveningen, 6.f47533.3%58.0%0.06 MB
B82Sicilian, Scheveningen, Tal variation728.6%57.1%0.01 MB
B83Sicilian, Scheveningen, 6.Be218938.1%47.6%0.13 MB
B83Sicilian, modern Scheveningen8831.8%48.9%0.06 MB
B83Sicilian, modern Scheveningen, main line7640.8%58.6%0.06 MB
B83Sicilian, modern Scheveningen, main line with Nb31435.7%67.9%0.01 MB
B84Sicilian, Scheveningen (Paulsen), classical variation119036.1%49.7%0.73 MB
B84Sicilian, Scheveningen, classical, Nd7 system1330.8%61.5%0.01 MB
B85Sicilian, Scheveningen, classical3148.4%56.5%0.03 MB
B85Sicilian, Scheveningen, classical main line12043.3%55.0%0.08 MB
B85Sicilian, Scheveningen, classical, Maroczy system1127.3%59.1%0.01 MB
B86Sicilian, Sozin attack1145.5%40.9%0.01 MB
B87Sicilian, Sozin with ...a6 and ...b515237.5%54.3%0.10 MB
B88Sicilian, Sozin, Leonhardt variation5827.6%56.9%0.04 MB
B89Sicilian, Sozin, 7.Be325131.1%50.2%0.16 MB
B89Sicilian, Velimirovic attack14527.6%48.3%0.09 MB
B90Sicilian, Najdorf35632.3%52.4%0.22 MB
B90Sicilian, Najdorf, Adams attack1258.3%62.5%0.01 MB
B90Sicilian, Najdorf, Byrne (English) attack421029.8%53.1%2.29 MB
B90Sicilian, Najdorf, Lipnitzky attack13431.3%50.7%0.09 MB
B91Sicilian, Najdorf, Zagreb (fianchetto) variation4932.7%53.1%0.04 MB
B92Sicilian, Najdorf, Opovcensky variation74037.2%49.3%0.48 MB
B93Sicilian, Najdorf, 6.f423742.6%51.3%0.16 MB
B94Sicilian, Najdorf, 6.Bg52821.4%57.1%0.02 MB
B95Sicilian, Najdorf, 6...e65326.4%32.1%0.04 MB
B96Sicilian, Najdorf, 7.f47131.0%50.7%0.05 MB
B96Sicilian, Najdorf, Polugayevsky variation757.1%28.6%0.01 MB
B96Sicilian, Najdorf, Polugayevsky, Simagin variation450.0%25.0%0.00 MB
B97Sicilian, Najdorf, 7...Qb623122.9%44.8%0.14 MB
B97Sicilian, Najdorf, Poisoned pawn variation37344.0%49.3%0.19 MB
B98Sicilian, Najdorf variation3426.5%66.2%0.02 MB
B98Sicilian, Najdorf, 7...Be72839.3%51.8%0.02 MB
B98Sicilian, Najdorf, Browne variation1118.2%81.8%0.01 MB
B98Sicilian, Najdorf, Goteborg (Argentine) variation10.0%0.0%0.00 MB
B99Sicilian, Najdorf, 7...Be7 main line14318.2%52.4%0.08 MB
C00French defence13638.2%53.7%0.09 MB
C00French defence, Steiner variation12544.8%50.4%0.09 MB
C00French, Alapin variation2100.0%50.0%0.00 MB
C00French, Chigorin variation10338.8%53.4%0.07 MB
C00French, King's Indian attack15032.7%51.7%0.10 MB
C00French, Labourdonnais variation11432.5%42.5%0.07 MB
C00French, Pelikan variation3135.5%53.2%0.03 MB
C00French, Reti (Spielmann) variation850.0%50.0%0.01 MB
C00French, Schlechter variation7842.3%46.8%0.06 MB
C00French, Steinitz attack30.0%33.3%0.00 MB
C00French, Two knights variation2638.5%50.0%0.02 MB
C00French, Wing gambit425.0%62.5%0.00 MB
C00St. George defence475.0%62.5%0.00 MB
C01French, exchange variation23239.7%54.3%0.18 MB
C01French, exchange, Svenonius variation633.3%33.3%0.00 MB
C02French, advance variation18126.5%54.7%0.13 MB
C02French, advance, Euwe variation14535.2%59.7%0.10 MB
C02French, advance, Milner-Barry gambit875.0%62.5%0.01 MB
C02French, advance, Nimzovich system850.0%37.5%0.01 MB
C02French, advance, Paulsen attack11729.9%52.6%0.08 MB
C02French, advance, Steinitz variation6227.4%36.3%0.04 MB
C02French, advance, Wade variation3020.0%63.3%0.02 MB
C03French, Tarrasch20041.0%58.5%0.15 MB
C03French, Tarrasch, Guimard variation1822.2%66.7%0.01 MB
C04French, Tarrasch, Guimard main line2326.1%52.2%0.02 MB
C05French, Tarrasch, Botvinnik variation333.3%50.0%0.00 MB
C05French, Tarrasch, closed variation12234.4%57.4%0.08 MB
C06French, Tarrasch, Leningrad variation425.0%87.5%0.00 MB
C06French, Tarrasch, closed variation, main line31038.4%61.1%0.20 MB
C07French, Tarrasch, Eliskases variation742.9%50.0%0.01 MB
C07French, Tarrasch, open variation46646.8%51.9%0.31 MB
C08French, Tarrasch, open, 4.ed ed20750.2%54.6%0.14 MB
C09French, Tarrasch, open variation, main line22952.0%57.9%0.16 MB
C10French, Fort Knox variation5335.8%50.0%0.04 MB
C10French, Frere (Becker) variation616.7%75.0%0.00 MB
C10French, Paulsen variation15529.0%56.5%0.10 MB
C10French, Rubinstein variation17944.7%57.0%0.13 MB
C11French defence5127.5%47.1%0.04 MB
C11French, Burn variation75336.7%56.2%0.45 MB
C11French, Henneberger variation837.5%56.3%0.01 MB
C11French, Steinitz variation11933.6%56.3%0.08 MB
C11French, Steinitz, Boleslavsky variation30934.0%56.5%0.20 MB
C11French, Steinitz, Gledhill attack1100.0%50.0%0.00 MB
C11French, Swiss variation2835.7%53.6%0.02 MB
C12French, MacCutcheon variation2740.7%50.0%0.02 MB
C12French, MacCutcheon, Chigorin variation10.0%0.0%0.00 MB
C12French, MacCutcheon, Dr. Olland (Dutch) variation40.0%100.0%0.00 MB
C12French, MacCutcheon, Grigoriev variation1100.0%50.0%0.00 MB
C12French, MacCutcheon, Janowski variation1338.5%65.4%0.01 MB
C12French, MacCutcheon, Lasker variation5425.9%48.1%0.04 MB
C12French, MacCutcheon, Lasker variation, 8...g69429.8%53.2%0.06 MB
C12French, MacCutcheon, advance variation1030.0%25.0%0.01 MB
C13French, Albin-Alekhine-Chatard attack540.0%40.0%0.00 MB
C13French, Albin-Alekhine-Chatard attack, Spielmann variation20.0%100.0%0.00 MB
C13French, classical560.0%30.0%0.00 MB
C13French, classical, Anderssen variation40.0%50.0%0.00 MB
C13French, classical, Anderssen-Richter variation30.0%66.7%0.00 MB
C13French, classical, Frankfurt variation425.0%87.5%0.00 MB
C13French, classical, Tartakower variation10.0%100.0%0.00 MB
C13French, classical, Vistaneckis (Nimzovich) variation60.0%66.7%0.00 MB
C14French, classical variation1100.0%50.0%0.00 MB
C14French, classical, Alapin variation20.0%100.0%0.00 MB
C14French, classical, Rubinstein variation250.0%75.0%0.00 MB
C14French, classical, Steinitz variation6930.4%55.8%0.04 MB
C14French, classical, Tarrasch variation20.0%50.0%0.00 MB
C15French, Winawer (Nimzovich) variation4938.8%54.1%0.04 MB
C15French, Winawer, Alekhine (Maroczy) gambit2437.5%56.3%0.02 MB
C15French, Winawer, Alekhine gambit, Kan variation1764.7%50.0%0.02 MB
C16French, Winawer, Petrosian variation2030.0%70.0%0.02 MB
C16French, Winawer, advance variation10729.9%64.5%0.07 MB
C17French, Winawer, advance variation1741.2%67.6%0.01 MB
C17French, Winawer, advance, 5.a35523.6%66.4%0.03 MB
C17French, Winawer, advance, Bogolyubov variation11428.1%53.5%0.07 MB
C17French, Winawer, advance, Russian variation1040.0%40.0%0.01 MB
C18French, Winawer, advance variation2725.9%64.8%0.02 MB
C18French, Winawer, classical variation4124.4%51.2%0.03 MB
C19French, Winawer, advance, 6...Ne72948.3%51.7%0.02 MB
C19French, Winawer, advance, Smyslov variation3023.3%78.3%0.02 MB
C19French, Winawer, advance, poisoned pawn variation66131.3%58.8%0.42 MB
C19French, Winawer, advance, poisoned pawn, Euwe-Gligoric variation10.0%0.0%0.00 MB
C19French, Winawer, advance, poisoned pawn, Konstantinopolsky variation10617.9%64.6%0.06 MB
C19French, Winawer, advance, positional main line28528.4%54.9%0.18 MB
C20Alapin's opening714.3%64.3%0.01 MB
C20KP, Lopez opening250.0%25.0%0.00 MB
C21Centre game4546.7%70.0%0.03 MB
C21Danish gambit250.0%75.0%0.00 MB
C22Centre game333.3%16.7%0.00 MB
C22Centre game, Berger variation5623.2%70.5%0.03 MB
C22Centre game, Paulsen attack30.0%66.7%0.00 MB
C23Bishop's opening6634.8%56.8%0.05 MB
C23Bishop's opening, Calabrese counter-gambit, Jaenisch variation30.0%100.0%0.00 MB
C23Bishop's opening, Classical variation2035.0%52.5%0.01 MB
C23Bishop's opening, Lisitsyn variation10.0%0.0%0.00 MB
C23Bishop's opening, Philidor counter-attack2864.3%64.3%0.02 MB
C23Bishop's opening, Philidor variation475.0%37.5%0.00 MB
C24Bishop's opening, Berlin defence8038.8%56.9%0.06 MB
C24Bishop's opening, Urusov gambit922.2%33.3%0.01 MB
C25Vienna gambit650.0%58.3%0.01 MB
C25Vienna game6933.3%52.9%0.05 MB
C25Vienna, Paulsen variation366.7%66.7%0.00 MB
C25Vienna, Pierce gambit1100.0%50.0%0.00 MB
C26Vienna game2330.4%63.0%0.02 MB
C26Vienna, Falkbeer variation837.5%56.3%0.01 MB
C26Vienna, Mengarini variation20.0%0.0%0.00 MB
C26Vienna, Paulsen-Mieses variation4146.3%47.6%0.03 MB
C27Boden-Kieseritsky gambit10.0%100.0%0.00 MB
C27Boden-Kieseritsky gambit, Lichtenhein defence1100.0%50.0%0.00 MB
C27Vienna game742.9%21.4%0.01 MB
C27Vienna, Alekhine variation250.0%75.0%0.00 MB
C28Vienna game3033.3%50.0%0.02 MB
C29Vienna gambit1040.0%50.0%0.01 MB
C29Vienna gambit, Breyer variation1040.0%80.0%0.01 MB
C30KGD, 2...Nf6250.0%25.0%0.00 MB
C30KGD, Keene's defence333.3%83.3%0.00 MB
C30KGD, classical variation944.4%66.7%0.01 MB
C30KGD, classical, 4.c3333.3%50.0%0.00 MB
C30KGD, classical, Reti variation1100.0%50.0%0.00 MB
C30King's gambit20.0%100.0%0.00 MB
C31KGD, Nimzovich counter-gambit2100.0%50.0%0.00 MB
C33KGA, Keres (Mason-Steinitz) gambit10.0%0.0%0.00 MB
C33KGA, bishop's gambit1100.0%50.0%0.00 MB
C33KGA, bishop's gambit, Bogolyubov variation10.0%0.0%0.00 MB
C33KGA, bishop's gambit, Gifford variation250.0%75.0%0.00 MB
C33KGA, bishop's gambit, Jaenisch variation616.7%8.3%0.00 MB
C33KGA, bishop's gambit, McDonnell attack10.0%100.0%0.00 MB
C33KGA, bishop's gambit, Steinitz defence10.0%100.0%0.00 MB
C34KGA, Becker defence10.0%100.0%0.00 MB
C34KGA, Bonsch-Osmolovsky variation20.0%50.0%0.00 MB
C34KGA, Fischer defence520.0%70.0%0.00 MB
C34KGA, Schallop defence425.0%62.5%0.00 MB
C34King's knight's gambit1100.0%50.0%0.00 MB
C35KGA, Cunningham defence40.0%50.0%0.00 MB
C35KGA, Cunningham, Euwe defence10.0%0.0%0.00 MB
C36KGA, Abbazia defence, modern variation650.0%41.7%0.01 MB
C37KGA, Blachly gambit10.0%0.0%0.00 MB
C37KGA, Muzio gambit, Brentano defence1100.0%50.0%0.00 MB
C38KGA, Hanstein gambit10.0%0.0%0.00 MB
C38King's knight's gambit30.0%0.0%0.00 MB
C39KGA, Kieseritsky, Berlin defence, 6.Bc410.0%0.0%0.00 MB
C39KGA, Kieseritsky, Kolisch defence475.0%62.5%0.00 MB
C39KGA, Kieseritsky, Paulsen defence10.0%100.0%0.00 MB
C39KGA, Kieseritsky, Rice gambit616.7%41.7%0.00 MB
C39KGA, Kieseritsky, long whip (Stockwhip, classical) defence10.0%0.0%0.00 MB
C40Gunderam defence2832.1%69.6%0.02 MB
C40Latvian, Fraser defence1100.0%50.0%0.00 MB
C40QP counter-gambit (elephant gambit)250.0%75.0%0.00 MB
C41Philidor's defence3540.0%57.1%0.02 MB
C41Philidor, Hanham variation366.7%66.7%0.01 MB
C41Philidor, Hanham, Delmar variation2100.0%50.0%0.00 MB
C41Philidor, Hanham, Krause variation333.3%16.7%0.00 MB
C41Philidor, Hanham, Schlechter variation1010.0%55.0%0.01 MB
C41Philidor, Hanham, Steiner variation250.0%25.0%0.00 MB
C41Philidor, Improved Hanham variation6137.7%61.5%0.05 MB
C41Philidor, Larsen variation633.3%50.0%0.01 MB
C41Philidor, Nimzovich, Sokolsky variation250.0%75.0%0.00 MB
C41Philidor, Philidor counter-gambit1100.0%50.0%0.00 MB
C41Philidor, Philidor counter-gambit, Zukertort variation30.0%100.0%0.00 MB
C41Philidor, Philidor counter-gambit, del Rio attack10.0%100.0%0.00 MB
C41Philidor, Steinitz variation333.3%16.7%0.00 MB
C41Philidor, exchange variation2623.1%46.2%0.02 MB
C42Petrov three knights game4323.3%65.1%0.04 MB
C42Petrov's defence6334.9%50.8%0.04 MB
C42Petrov, Cochrane gambit540.0%40.0%0.00 MB
C42Petrov, Cozio (Lasker) attack1747.1%52.9%0.02 MB
C42Petrov, Damiano variation10.0%100.0%0.00 MB
C42Petrov, French attack1100.0%50.0%0.00 MB
C42Petrov, Italian variation2524.0%52.0%0.02 MB
C42Petrov, Kaufmann attack1513.3%40.0%0.01 MB
C42Petrov, Nimzovich attack3943.6%55.1%0.03 MB
C42Petrov, Paulsen attack219.5%47.6%0.02 MB
C42Petrov, classical attack4740.4%60.6%0.03 MB
C42Petrov, classical attack, Berger variation10.0%100.0%0.00 MB
C42Petrov, classical attack, Chigorin variation10031.0%54.5%0.07 MB
C42Petrov, classical attack, Jaenisch variation43040.2%60.3%0.28 MB
C42Petrov, classical attack, Krause variation10.0%100.0%0.00 MB
C42Petrov, classical attack, Marshall variation24936.5%55.6%0.15 MB
C42Petrov, classical attack, Mason variation933.3%72.2%0.01 MB
C42Petrov, classical attack, close variation837.5%31.3%0.01 MB
C43Petrov, Urusov gambit250.0%75.0%0.00 MB
C43Petrov, modern (Steinitz) attack1040.0%60.0%0.01 MB
C43Petrov, modern attack, Steinitz variation1100.0%50.0%0.00 MB
C43Petrov, modern attack, Symmetrical variation20935.4%50.2%0.13 MB
C43Petrov, modern attack, Trifunovic variation1450.0%46.4%0.01 MB
C43Petrov, modern attack, main line2245.5%63.6%0.02 MB
C44Inverted Hanham520.0%70.0%0.01 MB
C44King's pawn game333.3%50.0%0.00 MB
C44Ponziani counter-gambit650.0%41.7%0.00 MB
C44Ponziani opening933.3%72.2%0.01 MB
C44Ponziani, Jaenisch counter-attack2540.0%64.0%0.02 MB
C44Scotch gambit1241.7%45.8%0.01 MB
C44Scotch gambit, Anderssen (Paulsen, Suhle) counter-attack10.0%0.0%0.00 MB
C44Scotch gambit, Benima defence1100.0%50.0%0.00 MB
C44Scotch gambit, Dubois-Reti defence4540.0%46.7%0.03 MB
C44Scotch, Goering gambit837.5%43.8%0.01 MB
C44Scotch, Lolli variation1145.5%50.0%0.01 MB
C44Scotch, Relfsson gambit ('MacLopez')20.0%100.0%0.00 MB
C45Scotch game44941.0%54.1%0.29 MB
C45Scotch, Blackburne attack10.0%0.0%0.00 MB
C45Scotch, Blumenfeld attack450.0%25.0%0.00 MB
C45Scotch, Ghulam Kassim variation2100.0%50.0%0.00 MB
C45Scotch, Horwitz attack1225.0%70.8%0.01 MB
C45Scotch, Meitner variation1100.0%50.0%0.00 MB
C45Scotch, Mieses variation25129.9%54.8%0.14 MB
C45Scotch, Potter variation837.5%68.8%0.01 MB
C45Scotch, Romanishin variation333.3%83.3%0.00 MB
C45Scotch, Schmidt variation11861.9%43.6%0.08 MB
C45Scotch, Steinitz variation20.0%50.0%0.00 MB
C45Scotch, Tartakower variation250.0%25.0%0.00 MB
C46Four knights game7048.6%51.4%0.05 MB
C46Four knights, Gunsberg variation757.1%42.9%0.01 MB
C46Four knights, Italian variation2330.4%50.0%0.02 MB
C46Three knights game2832.1%51.8%0.02 MB
C46Three knights, Steinitz variation825.0%62.5%0.01 MB
C46Three knights, Steinitz, Rosenthal variation10.0%0.0%0.00 MB
C47Four knights, Belgrade gambit450.0%50.0%0.00 MB
C47Four knights, Scotch variation450.0%50.0%0.00 MB
C47Four knights, Scotch, 4...exd44748.9%50.0%0.04 MB
C47Four knights, Scotch, Krause variation520.0%70.0%0.00 MB
C48Four knights, Bardeleben variation1100.0%50.0%0.00 MB
C48Four knights, Ranken variation1100.0%50.0%0.00 MB
C48Four knights, Rubinstein counter-gambit15039.3%57.0%0.10 MB
C48Four knights, Rubinstein counter-gambit, Bogolyubov variation20.0%50.0%0.00 MB
C48Four knights, Rubinstein counter-gambit, Henneberger variation450.0%50.0%0.00 MB
C48Four knights, Rubinstein counter-gambit, exchange variation1181.8%59.1%0.01 MB
C48Four knights, Spanish variation1266.7%50.0%0.01 MB
C48Four knights, Spanish, classical defence911.1%50.0%0.01 MB
C48Four knights, Spielmann variation10.0%0.0%0.00 MB
C49Four knights650.0%75.0%0.00 MB
C49Four knights, Nimzovich (Paulsen) variation4100.0%50.0%0.00 MB
C49Four knights, double Ruy Lopez520.0%90.0%0.01 MB
C49Four knights, symmetrical variation3933.3%52.6%0.03 MB
C49Four knights, symmetrical, Capablanca variation333.3%50.0%0.00 MB
C49Four knights, symmetrical, Maroczy system1435.7%53.6%0.01 MB
C49Four knights, symmetrical, Metger unpin7138.0%54.2%0.05 MB
C49Four knights, symmetrical, Pillsbury variation30.0%33.3%0.00 MB
C50Giuoco Pianissimo14939.6%50.0%0.10 MB
C50Giuoco Pianissimo, Canal variation4643.5%45.7%0.03 MB
C50Giuoco Pianissimo, Italian four knights variation7635.5%52.0%0.05 MB
C50Giuoco Piano2646.2%53.8%0.02 MB
C50Giuoco Piano, four knights variation1118.2%45.5%0.01 MB
C50Hungarian defence560.0%50.0%0.01 MB
C50King's pawn game7634.2%56.6%0.05 MB
C51Evans gambit declined10.0%100.0%0.00 MB
C51Evans gambit declined, 5.a4520.0%50.0%0.01 MB
C51Evans gambit declined, Showalter variation10.0%0.0%0.00 MB
C51Evans gambit, 5...Be710.0%0.0%0.00 MB
C51Evans gambit, Cordel variation475.0%37.5%0.00 MB
C51Evans gambit, Goering attack10.0%0.0%0.00 MB
C51Evans gambit, Morphy attack540.0%20.0%0.00 MB
C51Evans gambit, Paulsen variation911.1%72.2%0.01 MB
C51Evans gambit, Stone-Ware variation250.0%75.0%0.00 MB
C51Evans gambit, normal variation10.0%0.0%0.00 MB
C52Evans gambit1030.0%55.0%0.01 MB
C52Evans gambit, Lasker defence20.0%0.0%0.00 MB
C52Evans gambit, Richardson attack333.3%16.7%0.00 MB
C52Evans gambit, compromised defence425.0%62.5%0.00 MB
C52Evans gambit, compromised defence, Paulsen variation955.6%50.0%0.01 MB
C53Giuoco Piano39335.1%54.7%0.27 MB
C53Giuoco Piano, Anderssen variation333.3%50.0%0.00 MB
C53Giuoco Piano, Bird's attack2040.0%55.0%0.02 MB
C53Giuoco Piano, LaBourdonnais variation10.0%0.0%0.00 MB
C53Giuoco Piano, Mestel variation1100.0%50.0%0.00 MB
C53Giuoco Piano, centre-holding variation2100.0%50.0%0.00 MB
C53Giuoco Piano, close variation20.0%100.0%0.00 MB
C54Giuoco Piano2846.4%48.2%0.02 MB
C54Giuoco Piano, Moeller (Therkatz) attack742.9%21.4%0.01 MB
C54Giuoco Piano, Moeller, bayonet attack10.0%100.0%0.00 MB
C55Two knights defence742.9%64.3%0.01 MB
C55Two knights defence (Modern bishop's opening)12138.0%54.5%0.09 MB
C55Two knights defence, Perreux variation475.0%62.5%0.00 MB
C55Two knights, Max Lange attack, Steinitz variation10.0%100.0%0.00 MB
C56Two knights defence757.1%57.1%0.01 MB
C56Two knights defence, Canal variation1100.0%50.0%0.00 MB
C57Two knights defence, Fegatello attack10.0%0.0%0.00 MB
C57Two knights defence, Fegatello attack, Polerio defence30.0%100.0%0.00 MB
C57Two knights defence, Ulvestad variation475.0%62.5%0.00 MB
C58Two knights defence837.5%68.8%0.01 MB
C58Two knights defence, Paoli variation333.3%50.0%0.01 MB
C59Two knights defence9041.1%56.1%0.06 MB
C59Two knights defence, Goering variation250.0%25.0%0.00 MB
C59Two knights defence, Steinitz variation21428.0%50.9%0.12 MB
C60Ruy Lopez (Spanish opening)20.0%0.0%0.00 MB
C60Ruy Lopez, Cozio defence616.7%91.7%0.01 MB
C60Ruy Lopez, Cozio defence, Paulsen variation20.0%50.0%0.00 MB
C60Ruy Lopez, fianchetto (Smyslov/Barnes) defence1838.9%69.4%0.01 MB
C61Ruy Lopez, Bird's defence60.0%66.7%0.00 MB
C62Ruy Lopez, old Steinitz defence9435.1%58.0%0.08 MB
C62Ruy Lopez, old Steinitz defence, Nimzovich attack30.0%33.3%0.00 MB
C63Ruy Lopez, Schliemann defence30.0%66.7%0.00 MB
C63Ruy Lopez, Schliemann defence, Berger variation2030.0%60.0%0.02 MB
C64Ruy Lopez, classical (Cordel) defence4327.9%48.8%0.03 MB
C64Ruy Lopez, classical defence, 4.c31931.6%63.2%0.02 MB
C64Ruy Lopez, classical defence, Benelux variation 11436.8%58.8%0.08 MB
C64Ruy Lopez, classical defence, Charousek variation250.0%75.0%0.00 MB
C65Ruy Lopez, Berlin defence7934.2%51.3%0.07 MB
C65Ruy Lopez, Berlin defence, 4.O-O837.5%43.8%0.01 MB
C65Ruy Lopez, Berlin defence, Beverwijk variation4822.9%63.5%0.04 MB
C65Ruy Lopez, Berlin defence, Duras variation20.0%50.0%0.00 MB
C65Ruy Lopez, Berlin defence, Kaufmann variation250.0%75.0%0.00 MB
C65Ruy Lopez, Berlin defence, Nyholm attack1050.0%55.0%0.01 MB
C66Ruy Lopez, Berlin defence, 4.O-O, d61225.0%37.5%0.01 MB
C66Ruy Lopez, Berlin defence, hedgehog variation6653.0%61.4%0.05 MB
C66Ruy Lopez, closed Berlin defence, Bernstein variation714.3%35.7%0.01 MB
C66Ruy Lopez, closed Berlin defence, Showalter variation3253.1%60.9%0.02 MB
C66Ruy Lopez, closed Berlin defence, Wolf variation3060.0%60.0%0.02 MB
C67Ruy Lopez, Berlin defence, Cordel variation30.0%66.7%0.00 MB
C67Ruy Lopez, Berlin defence, Minckwitz variation30.0%66.7%0.00 MB
C67Ruy Lopez, Berlin defence, Pillsbury variation10.0%0.0%0.00 MB
C67Ruy Lopez, Berlin defence, Winawer attack633.3%83.3%0.00 MB
C67Ruy Lopez, Berlin defence, open variation44942.8%55.2%0.29 MB
C67Ruy Lopez, open Berlin defence, 5...Be7728.6%42.9%0.01 MB
C67Ruy Lopez, open Berlin defence, l'Hermet variation20.0%0.0%0.00 MB
C68Ruy Lopez, exchange variation1747.1%52.9%0.01 MB
C68Ruy Lopez, exchange, Alekhine variation333.3%16.7%0.00 MB
C68Ruy Lopez, exchange, Keres variation666.7%33.3%0.00 MB
C68Ruy Lopez, exchange, Romanovsky variation333.3%83.3%0.00 MB
C69Ruy Lopez, exchange variation, 5.O-O2934.5%51.7%0.02 MB
C69Ruy Lopez, exchange variation, Alapin gambit128.3%45.8%0.01 MB
C69Ruy Lopez, exchange, Bronstein variation5324.5%50.0%0.04 MB
C69Ruy Lopez, exchange, Gligoric variation5135.3%64.7%0.04 MB
C70Ruy Lopez20.0%50.0%0.00 MB
C70Ruy Lopez, Alapin's defence deferred1533.3%76.7%0.01 MB
C70Ruy Lopez, Caro variation1833.3%55.6%0.02 MB
C70Ruy Lopez, Classical defence deferred5848.3%55.2%0.05 MB
C70Ruy Lopez, Graz variation4100.0%50.0%0.00 MB
C70Ruy Lopez, Taimanov (chase/wing/accelerated counterthrust) variation6526.2%68.5%0.05 MB
C71Ruy Lopez, modern Steinitz defence1833.3%61.1%0.02 MB
C71Ruy Lopez, modern Steinitz defence, Duras (Keres) variation2123.8%50.0%0.02 MB
C71Ruy Lopez, modern Steinitz defence, Three knights variation742.9%64.3%0.01 MB
C72Ruy Lopez, modern Steinitz defence, 5.O-O4334.9%59.3%0.03 MB
C73Ruy Lopez, modern Steinitz defence, Alapin variation616.7%58.3%0.01 MB
C73Ruy Lopez, modern Steinitz defence, Richter variation2240.9%56.8%0.02 MB
C74Ruy Lopez, Siesta, Kopayev variation1225.0%54.2%0.01 MB
C74Ruy Lopez, modern Steinitz defence837.5%81.3%0.01 MB
C74Ruy Lopez, modern Steinitz defence, siesta variation10.0%100.0%0.00 MB
C75Ruy Lopez, modern Steinitz defence1338.5%50.0%0.01 MB
C75Ruy Lopez, modern Steinitz defence, Rubinstein variation911.1%72.2%0.01 MB
C76Ruy Lopez, modern Steinitz defence, fianchetto (Bronstein) variation5234.6%51.9%0.04 MB
C77Ruy Lopez, Anderssen variation5042.0%59.0%0.04 MB
C77Ruy Lopez, Morphy defence8035.0%60.0%0.06 MB
C77Ruy Lopez, Morphy defence, Duras variation20.0%100.0%0.00 MB
C77Ruy Lopez, Treybal (Bayreuth) variation (exchange var. deferred)1346.2%53.8%0.02 MB
C77Ruy Lopez, Wormald (Alapin) attack3023.3%55.0%0.03 MB
C77Ruy Lopez, four knights (Tarrasch) variation2020.0%50.0%0.02 MB
C78Ruy Lopez, ...b5 & ...d6714.3%50.0%0.01 MB
C78Ruy Lopez, 5.O-O9037.8%63.3%0.06 MB
C78Ruy Lopez, Archangelsk (counterthrust) variation12339.0%51.2%0.09 MB
C78Ruy Lopez, Moeller defence12634.9%54.8%0.08 MB
C79Ruy Lopez, Steinitz defence deferred (Russian defence)7128.2%56.3%0.05 MB
C79Ruy Lopez, Steinitz defence deferred, Lipnitsky variation862.5%56.3%0.01 MB
C79Ruy Lopez, Steinitz defence deferred, Rubinstein variation1100.0%50.0%0.00 MB
C80Ruy Lopez, open (Tarrasch) defence933.3%72.2%0.01 MB
C80Ruy Lopez, open, 6.d4475.0%62.5%0.00 MB
C80Ruy Lopez, open, 7.Bb31050.0%55.0%0.01 MB
C80Ruy Lopez, open, 8...Be69434.0%51.1%0.06 MB
C80Ruy Lopez, open, Berger variation2100.0%50.0%0.00 MB
C80Ruy Lopez, open, Bernstein variation5036.0%66.0%0.03 MB
C80Ruy Lopez, open, Bernstein variation, Karpov gambit20.0%0.0%0.00 MB
C80Ruy Lopez, open, Friess attack616.7%41.7%0.00 MB
C80Ruy Lopez, open, Harksen gambit10.0%100.0%0.00 MB
C80Ruy Lopez, open, Riga variation3100.0%50.0%0.00 MB
C80Ruy Lopez, open, Schlechter defence1100.0%50.0%0.00 MB
C80Ruy Lopez, open, Tartakower variation20.0%50.0%0.00 MB
C80Ruy Lopez, open, Zukertort variation10.0%100.0%0.00 MB
C81Ruy Lopez, open, Howell attack333.3%83.3%0.00 MB
C82Ruy Lopez, open, Dilworth variation540.0%20.0%0.01 MB
C82Ruy Lopez, open, Italian variation20.0%100.0%0.00 MB
C82Ruy Lopez, open, Motzko attack366.7%66.7%0.00 MB
C82Ruy Lopez, open, St. Petersburg variation1010.0%55.0%0.01 MB
C83Ruy Lopez, open, 9...Be7, 10.Re1742.9%78.6%0.01 MB
C83Ruy Lopez, open, Malkin variation475.0%62.5%0.00 MB
C83Ruy Lopez, open, classical defence2245.5%45.5%0.02 MB
C84Ruy Lopez, closed defence38537.1%54.9%0.25 MB
C84Ruy Lopez, closed, Basque gambit (North Spanish variation)250.0%25.0%0.00 MB
C84Ruy Lopez, closed, centre attack955.6%50.0%0.01 MB
C85Ruy Lopez, Exchange variation doubly deferred (DERLD)32536.6%49.4%0.22 MB
C86Ruy Lopez, Worrall attack666.7%50.0%0.01 MB
C86Ruy Lopez, Worrall attack, sharp line3141.9%53.2%0.03 MB
C86Ruy Lopez, Worrall attack, solid line862.5%43.8%0.01 MB
C87Ruy Lopez, closed, Averbach variation5736.8%58.8%0.04 MB
C88Ruy Lopez, Trajkovic counter-attack540.0%60.0%0.01 MB
C88Ruy Lopez, closed17936.9%55.9%0.11 MB
C88Ruy Lopez, closed, 7...O-O37036.2%55.1%0.23 MB
C88Ruy Lopez, closed, 8.c320.0%0.0%0.00 MB
C88Ruy Lopez, closed, Balla variation837.5%56.3%0.01 MB
C88Ruy Lopez, closed, anti-Marshall 8.a421632.9%51.2%0.14 MB
C89Ruy Lopez, Marshall counter-attack2934.5%55.2%0.02 MB
C89Ruy Lopez, Marshall counter-attack, 11...c62227.3%50.0%0.02 MB
C89Ruy Lopez, Marshall, Kevitz variation1100.0%50.0%0.00 MB
C89Ruy Lopez, Marshall, main line, 12.d2d42445.8%43.8%0.02 MB
C89Ruy Lopez, Marshall, main line, 14...Qh33716.2%62.2%0.03 MB
C90Ruy Lopez, closed (with ...d6)35831.3%47.2%0.23 MB
C90Ruy Lopez, closed, Lutikov variation560.0%50.0%0.01 MB
C90Ruy Lopez, closed, Pilnik variation15737.6%46.2%0.12 MB
C90Ruy Lopez, closed, Suetin variation616.7%58.3%0.01 MB
C91Ruy Lopez, closed, 9.d426130.3%58.8%0.17 MB
C91Ruy Lopez, closed, Bogolyubov variation96537.3%53.1%0.64 MB
C92Ruy Lopez, closed, 9.h36841.2%52.9%0.05 MB
C92Ruy Lopez, closed, Flohr-Zaitsev system (Lenzerheide variation)81337.6%55.4%0.52 MB
C92Ruy Lopez, closed, Keres (9...a5) variation366.7%33.3%0.00 MB
C92Ruy Lopez, closed, Kholmov variation2927.6%55.2%0.02 MB
C92Ruy Lopez, closed, Ragozin-Petrosian (`Keres') variation5042.0%61.0%0.04 MB
C93Ruy Lopez, closed, Smyslov defence1729.4%50.0%0.02 MB
C94Ruy Lopez, closed, Breyer defence250.0%25.0%0.00 MB
C95Ruy Lopez, closed, Breyer, Borisenko variation30435.2%55.8%0.22 MB
C95Ruy Lopez, closed, Breyer, Gligoric variation1729.4%61.8%0.02 MB
C95Ruy Lopez, closed, Breyer, Simagin variation560.0%70.0%0.00 MB
C96Ruy Lopez, closed (10...c5)15638.5%55.1%0.12 MB
C96Ruy Lopez, closed (8...Na5)850.0%62.5%0.01 MB
C96Ruy Lopez, closed, Borisenko defence1136.4%45.5%0.01 MB
C96Ruy Lopez, closed, Keres (...Nd7) defence5223.1%67.3%0.04 MB
C97Ruy Lopez, closed, Chigorin defence27629.0%63.8%0.18 MB
C98Ruy Lopez, closed, Chigorin, 12...Nc67132.4%58.5%0.06 MB
C99Ruy Lopez, closed, Chigorin, 12...c5d448443.4%62.4%0.31 MB
D00Blackmar gambit580.0%40.0%0.01 MB
D00Levitsky attack (Queen's bishop attack)17636.4%44.9%0.12 MB
D00Queen's pawn game2552.0%54.0%0.02 MB
D00Queen's pawn, Chigorin variation1154.5%63.6%0.01 MB
D00Queen's pawn, Mason variation19938.7%53.0%0.13 MB
D00Queen's pawn, Mason variation, Steinitz counter-gambit862.5%68.8%0.01 MB
D00Queen's pawn, stonewall attack40.0%75.0%0.00 MB
D01Richter-Veresov attack4721.3%38.3%0.03 MB
D01Richter-Veresov attack, Richter variation366.7%66.7%0.00 MB
D01Richter-Veresov attack, Veresov variation333.3%50.0%0.00 MB
D02Queen's bishop game27031.5%50.6%0.19 MB
D02Queen's pawn game111635.6%52.6%0.72 MB
D02Queen's pawn game, Chigorin variation4047.5%48.8%0.04 MB
D02Queen's pawn game, Krause variation2133.3%59.5%0.02 MB
D03Torre attack (Tartakower variation)6737.3%47.0%0.05 MB
D04Queen's pawn game10635.8%49.1%0.08 MB
D05Colle system944.4%66.7%0.01 MB
D05Queen's pawn game7635.5%53.3%0.05 MB
D05Queen's pawn game, Rubinstein (Colle-Zukertort) variation2254.5%50.0%0.02 MB
D05Queen's pawn game, Zukertort variation425.0%62.5%0.01 MB
D06QGD, Grau (Sahovic) defence540.0%60.0%0.00 MB
D06QGD, Marshall defence4445.5%61.4%0.03 MB
D06QGD, symmetrical (Austrian) defence10.0%0.0%0.00 MB
D07QGD, Chigorin defence30135.2%59.8%0.19 MB
D07QGD, Chigorin defence, Janowski variation633.3%66.7%0.01 MB
D08QGD, Albin counter-gambit333.3%50.0%0.00 MB
D09QGD, Albin counter-gambit, 5.g3425.0%37.5%0.01 MB
D10QGD Slav defence39035.9%54.6%0.27 MB
D10QGD Slav defence, Alekhine variation40.0%75.0%0.00 MB
D10QGD Slav defence, exchange variation16839.3%54.2%0.13 MB
D10QGD Slav, Winawer counter-gambit2420.8%56.3%0.02 MB
D11QGD Slav, 3.Nf317437.9%54.0%0.13 MB
D11QGD Slav, 4.e313834.1%52.5%0.10 MB
D11QGD Slav, Breyer variation2133.3%59.5%0.02 MB
D12QGD Slav, 4.e3 Bf533239.2%54.2%0.22 MB
D12QGD Slav, Amsterdam variation333.3%83.3%0.00 MB
D12QGD Slav, exchange variation1625.0%56.3%0.01 MB
D13QGD Slav, exchange variation7435.1%59.5%0.05 MB
D14QGD Slav, exchange variation, 6.Bf4 Bf53946.2%53.8%0.03 MB
D14QGD Slav, exchange, Trifunovic variation1233.3%41.7%0.01 MB
D15QGD Slav accepted1540.0%33.3%0.01 MB
D15QGD Slav, 4.Nc321434.1%54.4%0.15 MB
D15QGD Slav, 5.e3 (Alekhine variation)1827.8%58.3%0.01 MB
D15QGD Slav, Schlechter variation1844.4%55.6%0.01 MB
D15QGD Slav, Suechting variation250.0%75.0%0.00 MB
D15QGD Slav, Tolush-Geller gambit520.0%10.0%0.00 MB
D16QGD Slav accepted, Alapin variation714.3%78.6%0.00 MB
D16QGD Slav, Smyslov variation1020.0%60.0%0.01 MB
D16QGD Slav, Soultanbeieff variation450.0%75.0%0.00 MB
D16QGD Slav, Steiner variation1822.2%77.8%0.01 MB
D17QGD Slav, Carlsbad variation5731.6%52.6%0.04 MB
D17QGD Slav, Czech defence2437.5%43.8%0.02 MB
D17QGD Slav, Krause attack4930.6%64.3%0.04 MB
D17QGD Slav, Wiesbaden variation7131.0%59.2%0.04 MB
D18QGD Slav, Dutch variation1612.5%56.3%0.01 MB
D19QGD Slav, Dutch variation27033.7%58.7%0.18 MB
D19QGD Slav, Dutch variation, main line3933.3%60.3%0.03 MB
D20QGA, 3.e417934.1%57.3%0.11 MB
D20QGA, Linares variation944.4%55.6%0.01 MB
D20Queen's gambit accepted17237.8%59.0%0.12 MB
D21QGA, 3.Nf34632.6%57.6%0.03 MB
D21QGA, Alekhine defense, Borisenko-Furman variation250.0%25.0%0.00 MB
D21QGA, Ericson variation10.0%0.0%0.00 MB
D22QGA, Alekhine defence1353.8%57.7%0.01 MB
D22QGA, Alekhine defence, Alatortsev variation1100.0%50.0%0.00 MB
D22QGA, Haberditz variation366.7%33.3%0.00 MB
D23QGA, Mannheim variation837.5%56.3%0.01 MB
D23Queen's gambit accepted366.7%33.3%0.00 MB
D24QGA, 4.Nc31637.5%62.5%0.01 MB
D24QGA, Bogolyubov variation475.0%37.5%0.00 MB
D25QGA, 4.e3742.9%64.3%0.01 MB
D25QGA, Flohr variation1428.6%64.3%0.01 MB
D25QGA, Janowsky-Larsen variation3842.1%57.9%0.03 MB
D25QGA, Smyslov variation666.7%66.7%0.01 MB
D26QGA, 4...e66045.0%52.5%0.04 MB
D26QGA, classical variation19152.4%52.9%0.14 MB
D26QGA, classical variation, 6.O-O850.0%50.0%0.01 MB
D26QGA, classical, Furman variation10.0%0.0%0.00 MB
D26QGA, classical, Steinitz variation475.0%62.5%0.00 MB
D27QGA, classical, 6...a639449.2%56.3%0.26 MB
D27QGA, classical, Geller variation1353.8%65.4%0.01 MB
D27QGA, classical, Rubinstein variation45341.9%56.1%0.29 MB
D28QGA, classical, 7...b51729.4%67.6%0.01 MB
D28QGA, classical, 7.Qe21752.9%55.9%0.01 MB
D29QGA, classical, 8...Bb76737.3%41.0%0.05 MB
D29QGA, classical, Smyslov variation837.5%56.3%0.01 MB
D30QGD5543.6%58.2%0.04 MB
D30QGD Slav3056.7%58.3%0.03 MB
D30QGD, Capablanca-Duras variation2236.4%63.6%0.02 MB
D30QGD, Hastings variation1931.6%57.9%0.02 MB
D30QGD, Vienna variation540.0%60.0%0.00 MB
D30Queen's gambit declined92039.8%54.3%0.59 MB
D31QGD, 3.Nc31838.9%63.9%0.02 MB
D31QGD, Alapin variation250.0%75.0%0.00 MB
D31QGD, Charousek (Petrosian) variation5433.3%57.4%0.05 MB
D31QGD, Janowski variation366.7%33.3%0.00 MB
D31QGD, semi-Slav4434.1%55.7%0.04 MB
D31QGD, semi-Slav, Abrahams variation1850.0%47.2%0.02 MB
D31QGD, semi-Slav, Marshall gambit7335.6%53.4%0.05 MB
D31QGD, semi-Slav, Noteboom variation1030.0%45.0%0.01 MB
D32QGD, Tarrasch defence3450.0%57.4%0.02 MB
D32QGD, Tarrasch defence, 4.cd ed2100.0%50.0%0.00 MB
D32QGD, Tarrasch defence, Marshall gambit333.3%50.0%0.00 MB
D32QGD, Tarrasch, von Hennig-Schara gambit20.0%100.0%0.00 MB
D33QGD, Tarrasch, Folkestone (Swedish) variation540.0%60.0%0.00 MB
D33QGD, Tarrasch, Prague variation850.0%37.5%0.01 MB
D33QGD, Tarrasch, Schlechter-Rubinstein system425.0%37.5%0.00 MB
D33QGD, Tarrasch, Wagner variation250.0%75.0%0.00 MB
D34QGD, Tarrasch, Prague variation, 7...Be73638.9%55.6%0.03 MB
D34QGD, Tarrasch, Prague variation, 9.Bg55644.6%59.8%0.04 MB
D34QGD, Tarrasch, Prague variation, Normal position5743.9%51.8%0.05 MB
D34QGD, Tarrasch, Reti variation2100.0%50.0%0.00 MB
D35QGD, 3...Nf62536.0%54.0%0.02 MB
D35QGD, exchange variation1735.3%47.1%0.02 MB
D35QGD, exchange, Saemisch variation1942.1%36.8%0.02 MB
D35QGD, exchange, positional line7838.5%65.4%0.06 MB
D35QGD, exchange, positional line, 5...c63033.3%56.7%0.02 MB
D36QGD, exchange, positional line, 6.Qc21040.0%40.0%0.01 MB
D37QGD, 4.Nf339338.7%51.7%0.26 MB
D37QGD, classical variation (5.Bf4)63441.6%58.2%0.40 MB
D38QGD, Ragozin variation32239.4%55.4%0.22 MB
D39QGD, Ragozin, Vienna variation53547.3%52.8%0.30 MB
D40QGD, Semi-Tarrasch defence10842.6%50.9%0.08 MB
D40QGD, Semi-Tarrasch defence, Pillsbury variation20.0%50.0%0.00 MB
D41QGD, Semi-Tarrasch with e31850.0%52.8%0.01 MB
D41QGD, Semi-Tarrasch, 5.cd7542.7%53.3%0.05 MB
D41QGD, Semi-Tarrasch, Kmoch variation1100.0%50.0%0.00 MB
D41QGD, Semi-Tarrasch, San Sebastian variation616.7%91.7%0.00 MB
D42QGD, Semi-Tarrasch, 7.Bd34148.8%58.5%0.04 MB
D43QGD semi-Slav98637.1%52.8%0.61 MB
D44QGD semi-Slav, 5.Bg5 dc1145.5%50.0%0.01 MB
D44QGD semi-Slav, Botvinnik system (anti-Meran)1136.4%45.5%0.01 MB
D44QGD semi-Slav, Ekstrom variation933.3%27.8%0.01 MB
D44QGD semi-Slav, anti-Meran gambit19833.8%54.3%0.11 MB
D44QGD semi-Slav, anti-Meran, Lilienthal variation5831.0%60.3%0.03 MB
D44QGD semi-Slav, anti-Meran, Szabo variation812.5%43.8%0.01 MB
D45QGD semi-Slav, 5...Nd79028.9%45.6%0.07 MB
D45QGD semi-Slav, 5.e34831.3%55.2%0.03 MB
D45QGD semi-Slav, Rubinstein (anti-Meran) system1020.0%40.0%0.01 MB
D45QGD semi-Slav, Stoltz variation339039.5%52.2%2.06 MB
D45QGD semi-Slav, accelerated Meran (Alekhine variation)8230.5%45.7%0.06 MB
D46QGD semi-Slav, 6.Bd3944.4%55.6%0.01 MB
D46QGD semi-Slav, Bogolyubov variation6342.9%53.2%0.04 MB
D46QGD semi-Slav, Chigorin defence7435.1%56.8%0.05 MB
D46QGD semi-Slav, Romih variation8636.0%63.4%0.06 MB
D47QGD semi-Slav, 7.Bc41926.3%55.3%0.01 MB
D47QGD semi-Slav, Meran variation16242.6%57.7%0.11 MB
D47QGD semi-Slav, Meran, Wade variation288934.5%54.7%1.69 MB
D47QGD semi-Slav, neo-Meran (Lundin variation)3438.2%66.2%0.03 MB
D48QGD semi-Slav, Meran80.0%25.0%0.01 MB
D48QGD semi-Slav, Meran, 8...a621037.6%47.9%0.15 MB
D48QGD semi-Slav, Meran, Pirc variation20.0%50.0%0.00 MB
D48QGD semi-Slav, Meran, Reynolds' variation27035.6%54.8%0.16 MB
D48QGD semi-Slav, Meran, old main line7339.7%59.6%0.05 MB
D49QGD semi-Slav, Meran, Blumenfeld variation8838.6%47.7%0.06 MB
D49QGD semi-Slav, Meran, Rabinovich variation2832.1%51.8%0.02 MB
D49QGD semi-Slav, Meran, Rellstab attack1050.0%45.0%0.01 MB
D49QGD semi-Slav, Meran, Sozin variation7035.7%47.9%0.04 MB
D49QGD semi-Slav, Meran, Stahlberg variation3941.0%41.0%0.03 MB
D50QGD, 4.Bg51442.9%50.0%0.01 MB
D50QGD, Been-Koomen variation10.0%0.0%0.00 MB
D50QGD, Semi-Tarrasch, Primitive Pillsbury variation20.0%100.0%0.00 MB
D51QGD1100.0%50.0%0.00 MB
D51QGD, 4.Bg5 Nbd730.0%66.7%0.00 MB
D51QGD, 5...c6560.0%50.0%0.01 MB
D52QGD650.0%58.3%0.01 MB
D52QGD, Cambridge Springs defence, 7.cd10.0%0.0%0.00 MB
D52QGD, Cambridge Springs defence, Argentine variation1100.0%50.0%0.00 MB
D52QGD, Cambridge Springs defence, Bogoljubow variation6847.1%52.9%0.05 MB
D52QGD, Cambridge Springs defence, Rubinstein variation1457.1%42.9%0.01 MB
D52QGD, Cambridge Springs defence, Yugoslav variation5044.0%58.0%0.04 MB
D53QGD, 4.Bg5 Be7837.5%43.8%0.01 MB
D55QGD, 6.Nf3728.6%57.1%0.01 MB
D55QGD, Neo-orthodox variation, 7.Bh41752.9%61.8%0.02 MB
D55QGD, Neo-orthodox variation, 7.Bxf6633.3%83.3%0.01 MB
D55QGD, Petrosian variation11647.4%54.7%0.08 MB
D56QGD, Lasker defence3625.0%51.4%0.03 MB
D56QGD, Lasker defence, Teichmann variation837.5%43.8%0.01 MB
D58QGD, Tartakower (Makagonov-Bondarevsky) system202144.8%52.8%1.31 MB
D59QGD, Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd52642.3%48.1%0.02 MB
D59QGD, Tartakower variation2528.0%46.0%0.02 MB
D60QGD, Orthodox defence944.4%66.7%0.01 MB
D60QGD, Orthodox defence, Botvinnik variation933.3%61.1%0.01 MB
D61QGD, Orthodox defence, Rubinstein variation2948.3%51.7%0.03 MB
D62QGD, Orthodox defence, 7.Qc2 c5, 8.cd (Rubinstein)2152.4%69.0%0.02 MB
D63QGD, Orthodox defence333.3%50.0%0.00 MB
D63QGD, Orthodox defence, 7.Rc11729.4%61.8%0.01 MB
D63QGD, Orthodox defence, Pillsbury attack10.0%100.0%0.00 MB
D63QGD, Orthodox defence, Swiss (Henneberger) variation1844.4%61.1%0.01 MB
D63QGD, Orthodox defence, Swiss, Karlsbad variation3540.0%48.6%0.03 MB
D64QGD, Orthodox defence, Rubinstein attack (with Rc1)1957.9%55.3%0.02 MB
D64QGD, Orthodox defence, Rubinstein attack, Gruenfeld variation333.3%50.0%0.00 MB
D64QGD, Orthodox defence, Rubinstein attack, Karlsbad variation714.3%50.0%0.01 MB
D64QGD, Orthodox defence, Rubinstein attack, Wolf variation10.0%0.0%0.00 MB
D66QGD, Orthodox defence, Bd3 line4141.5%62.2%0.03 MB
D67QGD, Orthodox defence, Bd3 line1650.0%50.0%0.01 MB
D67QGD, Orthodox defence, Bd3 line, 11.O-O1315.4%69.2%0.01 MB
D67QGD, Orthodox defence, Bd3 line, Alekhine variation2450.0%58.3%0.02 MB
D68QGD, Orthodox defence, classical variation3342.4%57.6%0.02 MB
D68QGD, Orthodox defence, classical, 13.d1b1 (Maroczy)250.0%25.0%0.00 MB
D68QGD, Orthodox defence, classical, 13.d1c2 (Vidmar)3253.1%57.8%0.02 MB
D69QGD, Orthodox defence, classical, 13.de1566.7%40.0%0.01 MB
D70Neo-Gruenfeld (Kemeri) defence714.3%50.0%0.01 MB
D70Neo-Gruenfeld defence1942.1%47.4%0.01 MB
D71Neo-Gruenfeld, 5.cd1457.1%50.0%0.01 MB
D72Neo-Gruenfeld, 5.cd, main line1338.5%34.6%0.01 MB
D73Neo-Gruenfeld, 5.Nf37057.1%54.3%0.06 MB
D74Neo-Gruenfeld, 6.cd Nxd5, 7.O-O1346.2%61.5%0.01 MB
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc31127.3%59.1%0.01 MB
D75Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.dc10.0%100.0%0.00 MB
D76Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb64447.7%55.7%0.04 MB
D77Neo-Gruenfeld, 6.O-O7941.8%52.5%0.06 MB
D78Neo-Gruenfeld, 6.O-O c67739.0%53.2%0.05 MB
D79Neo-Gruenfeld, 6.O-O, main line3745.9%50.0%0.03 MB
D80Gruenfeld defence1931.6%68.4%0.01 MB
D80Gruenfeld, Stockholm variation4235.7%56.0%0.03 MB
D81Gruenfeld, Russian variation666.7%66.7%0.01 MB
D82Gruenfeld, 4.Bf43246.9%51.6%0.02 MB
D83Gruenfeld, Gruenfeld gambit520.0%70.0%0.00 MB
D83Gruenfeld, Gruenfeld gambit, Botvinnik variation1100.0%50.0%0.00 MB
D83Gruenfeld, Gruenfeld gambit, Capablanca variation425.0%62.5%0.00 MB
D84Gruenfeld, Gruenfeld gambit accepted250.0%25.0%0.00 MB
D85Gruenfeld, exchange variation11840.7%55.1%0.08 MB
D85Gruenfeld, modern exchange variation69849.4%53.9%0.44 MB
D86Gruenfeld, exchange, Simagin's improved variation837.5%43.8%0.01 MB
D86Gruenfeld, exchange, classical variation7542.7%56.0%0.06 MB
D87Gruenfeld, exchange, Seville variation2142.9%64.3%0.01 MB
D87Gruenfeld, exchange, Spassky variation5837.9%62.1%0.04 MB
D88Gruenfeld, Spassky variation, main line, 10...cd, 11.cd1656.3%59.4%0.01 MB
D89Gruenfeld, Spassky variation, main line, 13.Bd31275.0%54.2%0.01 MB
D89Gruenfeld, exchange, Sokolsky variation30.0%0.0%0.00 MB
D90Gruenfeld, Flohr variation911.1%61.1%0.01 MB
D90Gruenfeld, Schlechter variation10.0%100.0%0.00 MB
D90Gruenfeld, Three knights variation3429.4%47.1%0.03 MB
D91Gruenfeld, 5.Bg519232.3%47.9%0.14 MB
D92Gruenfeld, 5.Bf48451.2%56.5%0.05 MB
D93Gruenfeld with Bf4 e34348.8%57.0%0.03 MB
D94Gruenfeld with e3 Bd31100.0%50.0%0.00 MB
D94Gruenfeld, 5.e35846.6%57.8%0.04 MB
D94Gruenfeld, Flohr defence10.0%100.0%0.00 MB
D94Gruenfeld, Makogonov variation875.0%37.5%0.01 MB
D94Gruenfeld, Opovcensky variation933.3%61.1%0.01 MB
D94Gruenfeld, Smyslov defence2259.1%56.8%0.02 MB
D95Gruenfeld with e3 & Qb310.0%100.0%0.00 MB
D95Gruenfeld, Botvinnik variation633.3%50.0%0.01 MB
D96Gruenfeld, Russian variation1546.7%70.0%0.01 MB
D97Gruenfeld, Russian variation with e410.0%100.0%0.00 MB
D97Gruenfeld, Russian, Alekhine (Hungarian) variation33640.2%47.5%0.21 MB
D97Gruenfeld, Russian, Byrne (Simagin) variation1723.5%64.7%0.01 MB
D97Gruenfeld, Russian, Prins variation11744.4%57.3%0.08 MB
D97Gruenfeld, Russian, Szabo (Boleslavsky) variation616.7%58.3%0.01 MB
D98Gruenfeld, Russian, Keres variation10.0%100.0%0.00 MB
D98Gruenfeld, Russian, Smyslov variation3935.9%69.2%0.03 MB
D99Gruenfeld defence, Smyslov, main line3650.0%52.8%0.02 MB
E00Catalan opening35740.1%55.3%0.25 MB
E00Neo-Indian (Seirawan) attack8631.4%48.3%0.07 MB
E00Queen's pawn game12637.3%53.6%0.10 MB
E01Catalan, closed3033.3%56.7%0.02 MB
E02Catalan, open, 5.Qa41040.0%70.0%0.01 MB
E04Catalan, open, 5.Nf356739.3%51.1%0.35 MB
E05Catalan, open, classical line2123.8%50.0%0.02 MB
E06Catalan, closed, 5.Nf337746.7%52.0%0.26 MB
E07Catalan, closed, 6...Nbd71225.0%29.2%0.01 MB
E07Catalan, closed, Botvinnik variation825.0%50.0%0.01 MB
E08Catalan, closed, 7.Qc230.0%33.3%0.00 MB
E08Catalan, closed, Qc2 & b32040.0%50.0%0.02 MB
E09Catalan, closed, main line2313.0%71.7%0.02 MB
E10Blumenfeld counter-gambit1020.0%60.0%0.01 MB
E10Blumenfeld counter-gambit accepted922.2%33.3%0.01 MB
E10Blumenfeld counter-gambit, Dus-Chotimursky variation1947.4%50.0%0.01 MB
E10Blumenfeld counter-gambit, Spielmann variation40.0%25.0%0.00 MB
E10Doery defence933.3%50.0%0.01 MB
E10Dzindzikhashvili defence887.5%56.3%0.01 MB
E10Queen's pawn game66439.8%58.9%0.43 MB
E11Bogo-Indian defence11738.5%59.4%0.09 MB
E11Bogo-Indian defence, Gruenfeld variation14531.7%52.4%0.10 MB
E11Bogo-Indian defence, Nimzovich variation21633.3%54.2%0.15 MB
E12Queen's Indian defence8729.9%52.9%0.06 MB
E12Queen's Indian, 4.Nc373835.2%51.8%0.46 MB
E12Queen's Indian, 4.Nc3, Botvinnik variation333.3%50.0%0.00 MB
E12Queen's Indian, Miles variation3930.8%48.7%0.03 MB
E12Queen's Indian, Petrosian system109037.2%52.7%0.69 MB
E13Queen's Indian, 4.Nc3, main line1637.5%62.5%0.01 MB
E14Queen's Indian, 4.e331735.6%55.0%0.20 MB
E14Queen's Indian, Averbakh variation10.0%100.0%0.00 MB
E15Queen's Indian, 4.g312832.0%57.4%0.09 MB
E15Queen's Indian, 4.g3 Bb72429.2%72.9%0.02 MB
E15Queen's Indian, Buerger variation2100.0%50.0%0.00 MB
E15Queen's Indian, Nimzovich variation (exaggerated fianchetto)456035.5%55.8%2.79 MB
E15Queen's Indian, Rubinstein variation1233.3%41.7%0.01 MB
E16Queen's Indian, Capablanca variation1533.3%43.3%0.01 MB
E16Queen's Indian, Riumin variation1553.3%46.7%0.01 MB
E16Queen's Indian, Yates variation3125.8%61.3%0.02 MB
E17Queen's Indian, 5.Bg2 Be7757.1%42.9%0.01 MB
E17Queen's Indian, Euwe variation425.0%62.5%0.01 MB
E17Queen's Indian, Opovcensky variation7443.2%54.1%0.05 MB
E17Queen's Indian, anti-Queen's Indian system1346.2%53.8%0.01 MB
E17Queen's Indian, old main line, 6.O-O4736.2%60.6%0.04 MB
E18Queen's Indian, old main line, 7.Nc314943.6%59.4%0.10 MB
E19Queen's Indian, old main line, 9.Qxc316336.2%59.2%0.12 MB
E20Nimzo-Indian defence825.0%37.5%0.01 MB
E20Nimzo-Indian, Kmoch variation5632.1%58.9%0.04 MB
E20Nimzo-Indian, Romanishin-Kasparov (Steiner) system8236.6%53.7%0.06 MB
E21Nimzo-Indian, three knights variation24035.8%50.4%0.17 MB
E22Nimzo-Indian, Spielmann variation1241.7%54.2%0.01 MB
E23Nimzo-Indian, Spielmann, 4...c5, 5.dc Nc620.0%50.0%0.00 MB
E23Nimzo-Indian, Spielmann, Karlsbad variation1100.0%50.0%0.00 MB
E24Nimzo-Indian, Saemisch variation1650.0%31.3%0.01 MB
E24Nimzo-Indian, Saemisch, Botvinnik variation10.0%0.0%0.00 MB
E25Nimzo-Indian, Saemisch variation5100.0%50.0%0.00 MB
E25Nimzo-Indian, Saemisch, Keres variation4151.2%47.6%0.03 MB
E25Nimzo-Indian, Saemisch, Romanovsky variation1100.0%50.0%0.00 MB
E26Nimzo-Indian, Saemisch, O'Kelly variation50.0%20.0%0.01 MB
E27Nimzo-Indian, Saemisch variation250.0%25.0%0.00 MB
E28Nimzo-Indian, Saemisch variation30.0%100.0%0.00 MB
E29Nimzo-Indian, Saemisch, Capablanca variation837.5%31.3%0.01 MB
E29Nimzo-Indian, Saemisch, main line825.0%50.0%0.01 MB
E30Nimzo-Indian, Leningrad variation5332.1%53.8%0.04 MB
E30Nimzo-Indian, Leningrad, ...b5 gambit333.3%50.0%0.00 MB
E31Nimzo-Indian, Leningrad, main line1010.0%45.0%0.01 MB
E32Nimzo-Indian, classical variation119441.5%54.1%0.73 MB
E32Nimzo-Indian, classical, Adorjan gambit2025.0%52.5%0.01 MB
E33Nimzo-Indian, classical, 4...Nc6757.1%42.9%0.01 MB
E33Nimzo-Indian, classical, Milner-Barry (Zurich) variation5032.0%56.0%0.04 MB
E34Nimzo-Indian, classical, Noa variation11749.6%53.0%0.08 MB
E35Nimzo-Indian, classical, Noa variation, 5.cd ed6241.9%59.7%0.05 MB
E36Nimzo-Indian, classical, Botvinnik variation20.0%50.0%0.00 MB
E36Nimzo-Indian, classical, Noa variation, 5.a31717.6%44.1%0.01 MB
E37Nimzo-Indian, classical, Noa variation, main line, 7.Qc21533.3%76.7%0.01 MB
E38Nimzo-Indian, classical, 4...c55230.8%69.2%0.04 MB
E39Nimzo-Indian, classical, Pirc variation11137.8%57.7%0.08 MB
E40Nimzo-Indian, 4.e34126.8%50.0%0.03 MB
E40Nimzo-Indian, 4.e3, Taimanov variation30.0%33.3%0.00 MB
E41Nimzo-Indian, 4.e3 c57939.2%55.1%0.06 MB
E41Nimzo-Indian, e3, Huebner variation7628.9%42.1%0.06 MB
E42Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein)16442.7%53.0%0.11 MB
E43Nimzo-Indian, Fischer variation7037.1%58.6%0.05 MB
E44Nimzo-Indian, Fischer variation, 5.Ne25735.1%57.9%0.04 MB
E45Nimzo-Indian, 4.e3, Bronstein (Byrne) variation3053.3%60.0%0.02 MB
E46Nimzo-Indian, 4.e3 O-O922.2%44.4%0.01 MB
E46Nimzo-Indian, Reshevsky variation6547.7%46.9%0.05 MB
E46Nimzo-Indian, Simagin variation119.1%68.2%0.01 MB
E47Nimzo-Indian, 4.e3 O-O, 5.Bd34450.0%54.5%0.03 MB
E48Nimzo-Indian, 4.e3 O-O, 5.Bd3 d55637.5%49.1%0.04 MB
E49Nimzo-Indian, 4.e3, Botvinnik system2850.0%67.9%0.02 MB
E50Nimzo-Indian, 4.e3 e8g8, 5.Nf3, without ...d51741.2%44.1%0.02 MB
E51Nimzo-Indian, 4.e3 e8g8, 5.Nf3 d7d51172.7%45.5%0.01 MB
E51Nimzo-Indian, 4.e3, Ragozin variation366.7%66.7%0.00 MB
E52Nimzo-Indian, 4.e3, main line with ...b64736.2%62.8%0.04 MB
E53Nimzo-Indian, 4.e3, Gligoric system with 7...Nbd7333.3%16.7%0.00 MB
E53Nimzo-Indian, 4.e3, Keres variation1643.8%65.6%0.01 MB
E53Nimzo-Indian, 4.e3, main line with ...c55143.1%66.7%0.04 MB
E54Nimzo-Indian, 4.e3, Gligoric system with 7...dc15742.7%55.1%0.11 MB
E54Nimzo-Indian, 4.e3, Gligoric system, Smyslov variation366.7%66.7%0.00 MB
E55Nimzo-Indian, 4.e3, Gligoric system, Bronstein variation82946.1%53.7%0.54 MB
E56Nimzo-Indian, 4.e3, main line with 7...Nc61650.0%56.3%0.01 MB
E57Nimzo-Indian, 4.e3, main line with 8...dc and 9...cd560.0%30.0%0.00 MB
E58Nimzo-Indian, 4.e3, main line with 8...Bxc324732.4%53.4%0.16 MB
E59Nimzo-Indian, 4.e3, main line42843.0%51.2%0.27 MB
E60King's Indian defence9837.8%53.6%0.09 MB
E60King's Indian, 3.Nf340035.8%57.1%0.28 MB
E60King's Indian, 3.g310937.6%57.3%0.08 MB
E60King's Indian, 3.g3, counterthrust variation10.0%0.0%0.00 MB
E60King's Indian, Anti-Gruenfeld520.0%50.0%0.00 MB
E60Queen's pawn, Mengarini attack119.1%86.4%0.02 MB
E61King's Indian defence, 3.Nc311727.4%59.8%0.09 MB
E61King's Indian, Smyslov system1637.5%43.8%0.01 MB
E62King's Indian, fianchetto variation1435.7%53.6%0.01 MB
E62King's Indian, fianchetto with ...Nc61040.0%50.0%0.01 MB
E62King's Indian, fianchetto, Kavalek (Bronstein) variation10832.4%60.6%0.07 MB
E62King's Indian, fianchetto, Larsen system4445.5%61.4%0.03 MB
E62King's Indian, fianchetto, Simagin variation714.3%64.3%0.01 MB
E62King's Indian, fianchetto, Uhlmann (Szabo) variation3528.6%57.1%0.03 MB
E62King's Indian, fianchetto, lesser Simagin (Spassky) variation2347.8%54.3%0.02 MB
E63King's Indian, fianchetto, Panno variation48035.2%55.9%0.32 MB
E64King's Indian, fianchetto, Yugoslav system1030.0%75.0%0.01 MB
E65King's Indian, fianchetto, Yugoslav, 7.O-O1250.0%50.0%0.01 MB
E66King's Indian, fianchetto, Yugoslav Panno4035.0%55.0%0.03 MB
E67King's Indian, fianchetto with ...Nd71650.0%62.5%0.02 MB
E67King's Indian, fianchetto, classical variation7830.8%56.4%0.05 MB
E68King's Indian, fianchetto, classical variation, 8.e422334.1%60.1%0.15 MB
E69King's Indian, fianchetto, classical main line16934.9%60.1%0.11 MB
E70King's Indian, 4.e46622.7%73.5%0.05 MB
E70King's Indian, Kramer system1428.6%78.6%0.01 MB
E70King's Indian, accelerated Averbakh system520.0%70.0%0.00 MB
E71King's Indian, Makagonov system (5.h3)4725.5%63.8%0.04 MB
E72King's Indian with e4 & g3742.9%64.3%0.01 MB
E72King's Indian, Pomar system1100.0%50.0%0.00 MB
E73King's Indian, 5.Be2580.0%60.0%0.00 MB
E73King's Indian, Averbakh system4628.3%55.4%0.03 MB
E73King's Indian, Semi-Averbakh system30.0%66.7%0.00 MB
E74King's Indian, Averbakh, 6...c5825.0%62.5%0.01 MB
E75King's Indian, Averbakh, main line333.3%83.3%0.00 MB
E76King's Indian, Four pawns attack2138.1%66.7%0.01 MB
E76King's Indian, Four pawns attack, dynamic line1136.4%45.5%0.01 MB
E77King's Indian, Four pawns attack2718.5%68.5%0.02 MB
E77King's Indian, Four pawns attack, Florentine gambit1100.0%50.0%0.00 MB
E77King's Indian, Six pawns attack20.0%0.0%0.00 MB
E79King's Indian, Four pawns attack, main line333.3%50.0%0.00 MB
E80King's Indian, Saemisch variation2330.4%58.7%0.02 MB
E81King's Indian, Saemisch, 5...O-O18234.6%55.8%0.12 MB
E81King's Indian, Saemisch, Byrne variation475.0%62.5%0.00 MB
E82King's Indian, Saemisch, double fianchetto variation1030.0%55.0%0.01 MB
E83King's Indian, Saemisch, 6...Nc6475.0%62.5%0.00 MB
E83King's Indian, Saemisch, Panno formation650.0%58.3%0.01 MB
E84King's Indian, Saemisch, Panno main line6435.9%52.3%0.05 MB
E86King's Indian, Saemisch, orthodox, 7.Nge2 c64531.1%40.0%0.03 MB
E87King's Indian, Saemisch, orthodox, 7.d53930.8%61.5%0.03 MB
E87King's Indian, Saemisch, orthodox, Bronstein variation1100.0%50.0%0.00 MB
E88King's Indian, Saemisch, orthodox, 7.d5 c66132.8%59.0%0.04 MB
E89King's Indian, Saemisch, orthodox main line10.0%0.0%0.00 MB
E90King's Indian, 5.Nf39128.6%63.7%0.06 MB
E90King's Indian, Larsen variation1338.5%57.7%0.02 MB
E90King's Indian, Zinnowitz variation1338.5%50.0%0.01 MB
E91King's Indian, 6.Be28033.8%64.4%0.06 MB
E91King's Indian, Kazakh variation4042.5%48.8%0.03 MB
E92King's Indian, Andersson variation2360.9%52.2%0.02 MB
E92King's Indian, Gligoric-Taimanov system15824.7%58.5%0.12 MB
E92King's Indian, Petrosian system1010.0%45.0%0.01 MB
E92King's Indian, Petrosian system, Stein variation10933.9%54.6%0.08 MB
E92King's Indian, classical variation633.3%66.7%0.00 MB
E93King's Indian, Petrosian system, main line728.6%71.4%0.01 MB
E94King's Indian, orthodox variation14333.6%58.0%0.10 MB
E94King's Indian, orthodox, 7...Nbd718435.9%60.9%0.13 MB
E94King's Indian, orthodox, Donner variation1414.3%71.4%0.01 MB
E95King's Indian, orthodox, 7...Nbd7, 8.Re14634.8%63.0%0.03 MB
E96King's Indian, orthodox, 7...Nbd7, main line1631.3%40.6%0.01 MB
E97King's Indian, orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation)83231.4%55.6%0.55 MB
E97King's Indian, orthodox, Aronin-Taimanov, bayonet attack36034.4%57.2%0.22 MB
E98King's Indian, orthodox, Aronin-Taimanov, 9.Ne138022.4%60.7%0.24 MB
E99King's Indian, orthodox, Aronin-Taimanov, Benko attack10.0%100.0%0.00 MB
E99King's Indian, orthodox, Aronin-Taimanov, main line520.0%70.0%0.00 MB
Created in 2005-2008 by CCRL team
Last games added on April 11, 2008