CCRL 40/40
Downloads and Statistics
August 22, 2008
Testing summary:
Total: 134'776 games
played by 505 programs
19679 CPU days (X2 4600+)

White wins: 48'494 (36.0%)
Black wins: 36'437 (27.0%)
Draws: 49'845 (37.0%)
White score: 54.5%

Opening statistics

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

ECOOpeningNumber
of
games		DrawsWhite
score		Commented
PGN
A00Amar (Paris) 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 opening742.9%35.7%0.01 MB
A00Anti-Borg (Desprez) opening10.0%0.0%0.00 MB
A00Benko's opening32336.5%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 variation520.0%70.0%0.00 MB
A00Saragossa opening1060.0%60.0%0.01 MB
A00Van't Kruijs opening922.2%55.6%0.01 MB
A01Nimzovich-Larsen attack2119.0%47.6%0.02 MB
A01Nimzovich-Larsen attack, Dutch variation80.0%75.0%0.01 MB
A01Nimzovich-Larsen attack, English variation1330.8%53.8%0.01 MB
A01Nimzovich-Larsen attack, Indian variation2416.7%41.7%0.02 MB
A01Nimzovich-Larsen attack, classical variation3836.8%52.6%0.03 MB
A01Nimzovich-Larsen attack, modern variation9434.0%53.2%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 opening121137.0%54.4%0.81 MB
A04Reti v Dutch10430.8%53.8%0.08 MB
A04Reti, Lisitsin gambit deferred250.0%25.0%0.00 MB
A04Reti, Pirc-Lisitsin gambit2737.0%55.6%0.02 MB
A05Reti opening64339.0%54.5%0.44 MB
A05Reti, King's Indian attack8749.4%51.1%0.06 MB
A05Reti, King's Indian attack, Reti-Smyslov variation1346.2%53.8%0.01 MB
A05Reti, King's Indian attack, Spassky's variation5740.4%51.8%0.04 MB
A06Reti opening22839.0%50.7%0.16 MB
A06Reti, Nimzovich-Larsen attack19534.9%47.7%0.14 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 attack7532.0%45.3%0.05 MB
A07Reti, King's Indian attack (Barcza system)69541.9%54.0%0.50 MB
A07Reti, King's Indian attack (with ...c5)5644.6%52.7%0.04 MB
A07Reti, King's Indian attack, Keres variation5244.2%47.1%0.04 MB
A07Reti, King's Indian attack, Pachman system1127.3%59.1%0.01 MB
A07Reti, King's Indian attack, Yugoslav variation26738.2%47.2%0.19 MB
A08Reti, King's Indian attack6336.5%53.2%0.05 MB
A08Reti, King's Indian attack, French variation1520.0%43.3%0.01 MB
A09Reti accepted3647.2%45.8%0.03 MB
A09Reti accepted, Keres variation922.2%77.8%0.01 MB
A09Reti opening2846.4%55.4%0.02 MB
A09Reti, advance variation7244.4%47.2%0.06 MB
A10English opening35442.7%53.2%0.23 MB
A10English, Adorjan defence1650.0%56.3%0.01 MB
A10English, Anglo-Dutch defense3540.0%51.4%0.03 MB
A10English, Jaenisch gambit20.0%100.0%0.00 MB
A11English, Caro-Kann defensive system7643.4%54.6%0.06 MB
A12English, Bled variation520.0%90.0%0.00 MB
A12English, Capablanca's variation1154.5%36.4%0.01 MB
A12English, Caro-Kann defensive system1145.5%50.0%0.01 MB
A12English, Caro-Kann defensive system, Bogolyubov variation728.6%71.4%0.01 MB
A12English, London defensive system1127.3%22.7%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 opening40734.2%50.7%0.28 MB
A13English opening, Agincourt variation13045.4%52.7%0.11 MB
A13English, Kurajica defence425.0%37.5%0.00 MB
A13English, Neo-Catalan3043.3%68.3%0.03 MB
A13English, Neo-Catalan accepted5040.0%60.0%0.04 MB
A13English, Romanishin gambit771.4%64.3%0.01 MB
A13English, Wimpey system1346.2%61.5%0.01 MB
A14English, Neo-Catalan declined3751.4%50.0%0.03 MB
A14English, Symmetrical, Keres defence11450.0%54.8%0.08 MB
A15English opening80839.6%53.1%0.55 MB
A15English, 1...Nf6 (Anglo-Indian defense)15632.1%58.3%0.11 MB
A16English opening14328.7%52.1%0.10 MB
A16English, Anglo-Gruenfeld defense1040.0%60.0%0.01 MB
A16English, Anglo-Gruenfeld, Czech defense955.6%50.0%0.01 MB
A16English, Anglo-Gruenfeld, Smyslov defense862.5%68.8%0.01 MB
A17English opening3441.2%55.9%0.03 MB
A17English, Nimzo-English opening11034.5%61.8%0.08 MB
A17English, Queens Indian formation1435.7%46.4%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 variation812.5%56.3%0.01 MB
A19English, Mikenas-Carls, Sicilian variation2050.0%50.0%0.02 MB
A20English opening95239.4%55.2%0.61 MB
A20English, Nimzovich variation616.7%91.7%0.01 MB
A20English, Nimzovich, Flohr variation1723.5%41.2%0.02 MB
A21English opening23131.6%58.7%0.16 MB
A21English, Keres variation250.0%25.0%0.00 MB
A21English, Kramnik-Shirov counterattack8532.9%49.4%0.07 MB
A21English, Smyslov defence616.7%25.0%0.00 MB
A21English, Troeger defence1827.8%58.3%0.01 MB
A22English opening11729.9%55.1%0.08 MB
A22English, Bremen, Smyslov system24135.3%47.9%0.16 MB
A22English, Bremen, reverse dragon11741.0%50.4%0.09 MB
A22English, Carls' Bremen system3435.3%61.8%0.03 MB
A23English, Bremen system, Keres variation3122.6%59.7%0.02 MB
A24English, Bremen system with ...g61163.6%59.1%0.01 MB
A25English, Sicilian reversed9332.3%45.2%0.06 MB
A25English, closed system17334.7%58.4%0.12 MB
A25English, closed system (without ...d6)2634.6%55.8%0.02 MB
A25English, closed, 5.Rb14946.9%56.1%0.04 MB
A25English, closed, 5.Rb1 Taimanov variation10.0%0.0%0.00 MB
A25English, closed, Hort variation250.0%25.0%0.00 MB
A25English, closed, Taimanov variation250.0%75.0%0.00 MB
A26English, Botvinnik system3528.6%42.9%0.02 MB
A26English, closed system4223.8%57.1%0.03 MB
A27English, three knights system4228.6%54.8%0.03 MB
A28English, Bradley Beach variation1526.7%46.7%0.01 MB
A28English, Nenarokov variation1145.5%68.2%0.01 MB
A28English, four knights system6245.2%50.0%0.05 MB
A28English, four knights, 4.e323133.3%55.2%0.15 MB
A28English, four knights, Capablanca variation4440.9%52.3%0.04 MB
A28English, four knights, Marini variation6543.1%52.3%0.05 MB
A28English, four knights, Nimzovich variation3531.4%41.4%0.03 MB
A28English, four knights, Romanishin variation9851.0%57.1%0.07 MB
A28English, four knights, Stean variation2240.9%56.8%0.02 MB
A29English, four knights, kingside fianchetto145938.2%51.9%0.89 MB
A30English, symmetrical variation77035.6%55.6%0.49 MB
A30English, symmetrical, hedgehog system53239.8%56.8%0.35 MB
A30English, symmetrical, hedgehog, flexible formation8045.0%56.3%0.05 MB
A31English, symmetrical, Benoni formation13743.8%59.1%0.11 MB
A32English, symmetrical variation2138.1%61.9%0.02 MB
A33English, symmetrical variation18844.1%56.6%0.13 MB
A33English, symmetrical, Geller variation12830.5%59.0%0.09 MB
A34English, symmetrical variation23333.9%55.6%0.16 MB
A34English, symmetrical, Rubinstein system2138.1%47.6%0.01 MB
A34English, symmetrical, three knights system10442.3%60.6%0.08 MB
A35English, symmetrical variation3928.2%50.0%0.04 MB
A35English, symmetrical, four knights system28940.8%52.6%0.20 MB
A36English, symmetrical variation2524.0%68.0%0.02 MB
A36English, symmetrical, Botvinnik system837.5%43.8%0.01 MB
A36English, symmetrical, Botvinnik system reversed60.0%50.0%0.01 MB
A36English, ultra-symmetrical variation9130.8%48.4%0.07 MB
A37English, symmetrical variation4325.6%52.3%0.03 MB
A37English, symmetrical, Botvinnik system reversed9429.8%52.1%0.07 MB
A38English, symmetrical variation12040.8%52.9%0.09 MB
A38English, symmetrical, main line with b31100.0%50.0%0.00 MB
A38English, symmetrical, main line with d3825.0%25.0%0.01 MB
A39English, symmetrical, main line with d414544.8%58.3%0.10 MB
A40Beefeater defence333.3%83.3%0.00 MB
A40Modern defence4727.7%69.1%0.03 MB
A40Polish defence666.7%50.0%0.01 MB
A40Queen's pawn64938.1%56.5%0.44 MB
A40Queen's pawn, Charlick (Englund) gambit1100.0%50.0%0.00 MB
A40Queen's pawn, English defence1723.5%70.6%0.01 MB
A40Queen's pawn, Franco-Indian (Keres) defence10340.8%54.4%0.08 MB
A40Queen's pawn, Keres defence17636.4%59.1%0.12 MB
A40Queen's pawn, Lundin (Kevitz-Mikenas) defence1612.5%62.5%0.01 MB
A41Old Indian defence3933.3%60.3%0.03 MB
A41Old Indian, Tartakower (Wade) variation5534.5%59.1%0.04 MB
A41Queen's Pawn6829.4%51.5%0.05 MB
A41Robatsch defence, Rossolimo variation1040.0%60.0%0.01 MB
A42Modern defence, Averbakh system1942.1%63.2%0.02 MB
A42Modern defence, Averbakh system, Kotov variation10.0%100.0%0.00 MB
A42Pterodactyl defence1952.6%63.2%0.02 MB
A43Hawk (Habichd) defence10.0%0.0%0.00 MB
A43Old Benoni defence10426.9%56.7%0.07 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 opening1136.4%27.3%0.01 MB
A45Queen's pawn game42839.5%53.6%0.30 MB
A45Trompovsky attack (Ruth, Opovcensky opening)24331.7%53.3%0.17 MB
A46Queen's pawn game38731.5%55.6%0.26 MB
A46Queen's pawn, Torre attack7040.0%45.7%0.05 MB
A46Queen's pawn, Torre attack, Wagner gambit10.0%100.0%0.00 MB
A46Queen's pawn, Yusupov-Rubinstein system4637.0%62.0%0.04 MB
A47Queen's Indian defence10134.7%57.9%0.07 MB
A47Queen's Indian, Marienbad system1723.5%52.9%0.02 MB
A47Queen's Indian, Marienbad system, Berg variation333.3%50.0%0.00 MB
A48King's Indian, East Indian defence17638.6%50.6%0.13 MB
A48King's Indian, London system7341.1%50.7%0.06 MB
A48King's Indian, Torre attack14830.4%55.1%0.11 MB
A49King's Indian, fianchetto without c415635.9%57.7%0.11 MB
A50Kevitz-Trajkovich defence4546.7%50.0%0.04 MB
A50Queen's Indian accelerated2334.8%52.2%0.02 MB
A50Queen's pawn game10428.8%60.6%0.07 MB
A51Budapest defence declined20.0%50.0%0.00 MB
A51Budapest, Fajarowicz variation70.0%71.4%0.01 MB
A52Budapest defence366.7%66.7%0.00 MB
A52Budapest, Adler variation2045.0%47.5%0.02 MB
A52Budapest, Alekhine variation20.0%50.0%0.00 MB
A52Budapest, Alekhine, Abonyi variation560.0%50.0%0.01 MB
A52Budapest, Rubinstein variation11443.9%65.8%0.08 MB
A53Old Indian defence14631.5%58.9%0.11 MB
A53Old Indian, Janowski variation1020.0%70.0%0.01 MB
A54Old Indian, Ukrainian variation1163.6%68.2%0.01 MB
A54Old Indian, Ukrainian variation, 4.Nf31145.5%59.1%0.01 MB
A55Old Indian, main line6647.0%61.4%0.05 MB
A56Benoni defence9031.1%57.8%0.07 MB
A56Benoni defence, Hromodka system2416.7%75.0%0.02 MB
A56Czech Benoni defence2227.3%72.7%0.02 MB
A56Czech Benoni, King's Indian system520.0%30.0%0.01 MB
A56Vulture defence1100.0%50.0%0.00 MB
A57Benko gambit5822.4%64.7%0.05 MB
A57Benko gambit half accepted11627.6%50.9%0.08 MB
A57Benko gambit, Zaitsev system922.2%11.1%0.01 MB
A58Benko gambit accepted9239.1%52.2%0.06 MB
A58Benko gambit, fianchetto variation2839.3%62.5%0.02 MB
A59Benko gambit616.7%41.7%0.01 MB
A59Benko gambit, 7.e41100.0%50.0%0.00 MB
A59Benko gambit, main line2222.7%65.9%0.01 MB
A60Benoni defence1330.8%69.2%0.01 MB
A61Benoni defence7921.5%70.3%0.05 MB
A61Benoni, Nimzovich (knight's tour) variation5523.6%59.1%0.04 MB
A61Benoni, Uhlmann variation850.0%50.0%0.01 MB
A61Benoni, fianchetto variation20.0%100.0%0.00 MB
A62Benoni, fianchetto variation5829.3%61.2%0.04 MB
A63Benoni, fianchetto, 9...Nbd7812.5%68.8%0.01 MB
A64Benoni, fianchetto, 11...Re82119.0%33.3%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 line1353.8%57.7%0.01 MB
A70Benoni, classical with e4 and Nf310834.3%55.1%0.08 MB
A70Benoni, classical without 9.O-O10.0%0.0%0.00 MB
A71Benoni, classical, 8.Bg51811.1%50.0%0.01 MB
A72Benoni, classical without 9.O-O812.5%81.3%0.01 MB
A73Benoni, classical, 9.O-O80.0%75.0%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.Nd22020.0%70.0%0.02 MB
A78Benoni, classical with ...Re8 and ...Na61136.4%54.5%0.01 MB
A79Benoni, classical, 11.f31637.5%50.0%0.01 MB
A80Dutch5334.0%64.2%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 defence19438.7%54.9%0.14 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 defence5935.6%58.5%0.05 MB
A84Dutch defence, Rubinstein variation2937.9%53.4%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 & g3540.0%40.0%0.01 MB
A86Dutch, Leningrad variation966.7%55.6%0.01 MB
A87Dutch, Leningrad, main variation1758.8%64.7%0.02 MB
A88Dutch, Leningrad, main variation with c63826.3%71.1%0.03 MB
A89Dutch, Leningrad, main variation with Nc62532.0%72.0%0.02 MB
A90Dutch defence4630.4%60.9%0.04 MB
A90Dutch defence, Dutch-Indian (Nimzo-Dutch) variation333.3%50.0%0.00 MB
A90Dutch-Indian, Alekhine variation616.7%58.3%0.01 MB
A91Dutch defence425.0%87.5%0.00 MB
A92Dutch defence10.0%100.0%0.00 MB
A92Dutch, stonewall variation1100.0%50.0%0.00 MB
A92Dutch, stonewall with Nc3250.0%25.0%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 Nc3616.7%41.7%0.01 MB
A96Dutch, classical variation1241.7%62.5%0.01 MB
A97Dutch, Ilyin-Genevsky variation10.0%100.0%0.00 MB
A97Dutch, Ilyin-Genevsky, Winter variation666.7%50.0%0.00 MB
A98Dutch, Ilyin-Genevsky variation with Qc21100.0%50.0%0.00 MB
A99Dutch, Ilyin-Genevsky variation with b3650.0%75.0%0.01 MB
B00KP, Nimzovich defence2540.0%60.0%0.02 MB
B00KP, Nimzovich defence, Bogolyubov variation520.0%70.0%0.00 MB
B00King's pawn opening12226.2%59.0%0.09 MB
B00Lemming defence250.0%25.0%0.00 MB
B00Owen defence3336.4%63.6%0.03 MB
B00Reversed Grob (Borg/Basman defence/macho Grob)425.0%87.5%0.00 MB
B01Scandinavian (centre counter) defence10742.1%57.5%0.08 MB
B01Scandinavian defence3933.3%52.6%0.03 MB
B01Scandinavian defence, Gruenfeld variation20.0%50.0%0.00 MB
B01Scandinavian defence, Lasker variation1338.5%65.4%0.01 MB
B01Scandinavian gambit1656.3%59.4%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 variation8839.8%65.3%0.06 MB
B01Scandinavian, Pytel-Wade variation2951.7%50.0%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 variation5032.0%54.0%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.Be31346.2%76.9%0.01 MB
B03Alekhine's defence, four pawns attack, fianchetto variation40.0%50.0%0.00 MB
B04Alekhine's defence, modern variation1442.9%71.4%0.01 MB
B04Alekhine's defence, modern, Keres variation1250.0%66.7%0.01 MB
B04Alekhine's defence, modern, Larsen variation3141.9%62.9%0.03 MB
B04Alekhine's defence, modern, Schmid variation1136.4%54.5%0.01 MB
B04Alekhine's defence, modern, fianchetto variation2334.8%69.6%0.02 MB
B05Alekhine's defence, modern variation, 4...Bg46129.5%63.9%0.05 MB
B05Alekhine's defence, modern, Alekhine variation1100.0%50.0%0.00 MB
B05Alekhine's defence, modern, Flohr variation1127.3%68.2%0.01 MB
B06Robatsch (modern) defence22730.4%59.3%0.17 MB
B06Robatsch defence3638.9%55.6%0.03 MB
B06Robatsch defence, Gurgenidze variation30.0%66.7%0.00 MB
B06Robatsch defence, Pseudo-Austrian attack2317.4%73.9%0.02 MB
B06Robatsch defence, Two knights variation633.3%66.7%0.01 MB
B06Robatsch defence, Two knights, Suttles variation5731.6%52.6%0.04 MB
B06Robatsch defence, three pawns attack1100.0%50.0%0.00 MB
B07Pirc defence8030.0%53.8%0.06 MB
B07Pirc, 150 attack6141.0%58.2%0.04 MB
B07Pirc, Byrne variation3745.9%58.1%0.03 MB
B07Pirc, Holmov system2100.0%50.0%0.00 MB
B07Pirc, Sveshnikov system2835.7%46.4%0.02 MB
B07Pirc, Ufimtsev-Pytel variation4932.7%57.1%0.04 MB
B07Pirc, bayonet (Mariotti) attack2100.0%50.0%0.00 MB
B07Robatsch defence, Geller's system3735.1%63.5%0.03 MB
B08Pirc, classical (two knights) system4431.8%63.6%0.04 MB
B08Pirc, classical system, 5.Be216933.1%56.2%0.12 MB
B08Pirc, classical, h3 system4045.0%52.5%0.03 MB
B09Pirc, Austrian attack1729.4%55.9%0.01 MB
B09Pirc, Austrian attack, 6.Bd36440.6%48.4%0.05 MB
B09Pirc, Austrian attack, 6.Be31030.0%65.0%0.01 MB
B09Pirc, Austrian attack, 6.e5333.3%50.0%0.00 MB
B09Pirc, Austrian attack, Ljubojevic variation333.3%50.0%0.00 MB
B09Pirc, Austrian attack, dragon formation2948.3%69.0%0.02 MB
B10Caro-Kann defence37733.7%58.0%0.24 MB
B10Caro-Kann, Goldman (Spielmann) variation425.0%37.5%0.00 MB
B10Caro-Kann, Two knights variation5345.3%60.4%0.04 MB
B10Caro-Kann, anti-Caro-Kann defence13233.3%58.3%0.09 MB
B10Caro-Kann, anti-anti-Caro-Kann defence11444.7%50.4%0.08 MB
B10Caro-Kann, closed (Breyer) variation4436.4%50.0%0.03 MB
B11Caro-Kann, Two knights, 3...Bg44630.4%56.5%0.03 MB
B12Caro-Kann defence6129.5%57.4%0.04 MB
B12Caro-Kann, 3.Nd25139.2%52.9%0.04 MB
B12Caro-Kann, Edinburgh variation450.0%25.0%0.00 MB
B12Caro-Kann, Tartakower (fantasy) variation11540.9%56.1%0.08 MB
B12Caro-Kann, advance variation90633.7%56.5%0.56 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 attack8351.8%52.4%0.06 MB
B13Caro-Kann, Panov-Botvinnik, Czerniak variation250.0%25.0%0.00 MB
B13Caro-Kann, Panov-Botvinnik, Gunderam attack30.0%33.3%0.00 MB
B13Caro-Kann, Panov-Botvinnik, Herzog defence333.3%50.0%0.00 MB
B13Caro-Kann, Panov-Botvinnik, normal variation1127.3%59.1%0.01 MB
B13Caro-Kann, exchange variation10146.5%49.0%0.07 MB
B13Caro-Kann, exchange, Rubinstein variation1729.4%38.2%0.01 MB
B14Caro-Kann, Panov-Botvinnik attack, 5...e639043.6%55.6%0.26 MB
B14Caro-Kann, Panov-Botvinnik attack, 5...g64647.8%54.3%0.03 MB
B15Caro-Kann defence3930.8%48.7%0.02 MB
B15Caro-Kann, Alekhine gambit333.3%83.3%0.00 MB
B15Caro-Kann, Forgacs variation4533.3%50.0%0.03 MB
B15Caro-Kann, Gurgenidze counter-attack20.0%50.0%0.00 MB
B15Caro-Kann, Gurgenidze system5932.2%60.2%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 variation2927.6%62.1%0.03 MB
B17Caro-Kann, Steinitz variation48736.1%54.8%0.32 MB
B18Caro-Kann, classical variation8145.7%50.0%0.06 MB
B18Caro-Kann, classical, 6.h46732.8%55.2%0.05 MB
B18Caro-Kann, classical, Flohr variation40.0%75.0%0.01 MB
B18Caro-Kann, classical, Maroczy attack250.0%25.0%0.00 MB
B19Caro-Kann, classical, 7...Nd71346.2%53.8%0.01 MB
B19Caro-Kann, classical, Spassky variation76840.2%53.8%0.46 MB
B20Sicilian defence32134.9%49.5%0.20 MB
B20Sicilian, Keres variation (2.Ne2)4544.4%57.8%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 attack17736.2%50.8%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)86637.6%53.8%0.57 MB
B23Sicilian, Grand Prix attack5831.0%50.0%0.04 MB
B23Sicilian, Grand Prix attack, Schofman variation450.0%50.0%0.00 MB
B23Sicilian, chameleon variation4736.2%64.9%0.03 MB
B23Sicilian, closed43932.6%51.8%0.28 MB
B23Sicilian, closed, 2...Nc615242.1%55.9%0.11 MB
B23Sicilian, closed, Korchnoi variation540.0%40.0%0.01 MB
B24Sicilian, closed4833.3%47.9%0.03 MB
B25Sicilian, closed2437.5%60.4%0.02 MB
B25Sicilian, closed, 6.Ne2 e5 (Botvinnik)742.9%64.3%0.01 MB
B25Sicilian, closed, 6.f44334.9%47.7%0.03 MB
B25Sicilian, closed, 6.f4 e5 (Botvinnik)650.0%58.3%0.01 MB
B26Sicilian, closed, 6.Be35230.8%44.2%0.04 MB
B27Sicilian defence250.0%75.0%0.00 MB
B27Sicilian, Hungarian variation18033.9%57.5%0.12 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 variation1136.4%72.7%0.01 MB
B29Sicilian, Nimzovich-Rubinstein; Rubinstein counter-gambit1216.7%41.7%0.01 MB
B30Sicilian defence