CCRL 40/4
Downloads and Statistics
October 25, 2008
Testing summary:
Total: 352'891 games
played by 690 programs
5321 CPU days (X2 4600+)

White wins: 134'426 (38.1%)
Black wins: 106'995 (30.3%)
Draws: 111'470 (31.6%)
White score: 53.9%

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		Bare
PGN
A00Amsterdam attack30.0%66.7%0.00 MB
A00Benko's opening36635.8%52.6%0.08 MB
A00Benko's opening, reversed Alekhine10.0%0.0%0.00 MB
A00Dunst (Sleipner, Heinrichsen) opening1040.0%40.0%0.00 MB
A00Polish (Sokolsky) opening6734.3%48.5%0.02 MB
A00Polish, Outflank variation10.0%0.0%0.00 MB
A00Saragossa opening147.1%75.0%0.00 MB
A01Nimzovich-Larsen attack333.3%50.0%0.00 MB
A01Nimzovich-Larsen attack, Dutch variation10.0%0.0%0.00 MB
A01Nimzovich-Larsen attack, English variation742.9%35.7%0.00 MB
A01Nimzovich-Larsen attack, Indian variation1631.3%53.1%0.00 MB
A01Nimzovich-Larsen attack, classical variation2339.1%50.0%0.01 MB
A01Nimzovich-Larsen attack, modern variation9834.7%52.0%0.02 MB
A01Nimzovich-Larsen attack, symmetrical variation4100.0%50.0%0.00 MB
A03Bird's opening2100.0%50.0%0.00 MB
A03Bird's opening, Williams gambit10.0%0.0%0.00 MB
A04Reti opening179230.1%53.0%0.36 MB
A04Reti v Dutch14032.1%58.9%0.03 MB
A04Reti, Lisitsin gambit deferred20.0%100.0%0.00 MB
A04Reti, Pirc-Lisitsin gambit742.9%50.0%0.00 MB
A05Reti opening128932.0%52.9%0.27 MB
A05Reti, King's Indian attack28139.5%57.5%0.07 MB
A05Reti, King's Indian attack, Reti-Smyslov variation1650.0%62.5%0.01 MB
A05Reti, King's Indian attack, Spassky's variation13936.7%57.9%0.03 MB
A06Reti opening29628.7%52.2%0.07 MB
A06Reti, Nimzovich-Larsen attack32831.7%53.0%0.08 MB
A06Reti, old Indian attack30.0%66.7%0.00 MB
A06Santasiere's folly30.0%33.3%0.00 MB
A07Reti, King's Indian attack11532.2%52.6%0.03 MB
A07Reti, King's Indian attack (Barcza system)104332.2%52.0%0.23 MB
A07Reti, King's Indian attack (with ...c5)7634.2%53.9%0.02 MB
A07Reti, King's Indian attack, Keres variation13035.4%52.3%0.03 MB
A07Reti, King's Indian attack, Pachman system1428.6%57.1%0.00 MB
A07Reti, King's Indian attack, Yugoslav variation79733.8%53.5%0.18 MB
A08Reti, King's Indian attack12631.0%57.5%0.03 MB
A08Reti, King's Indian attack, French variation11636.2%55.2%0.03 MB
A09Reti accepted4323.3%58.1%0.01 MB
A09Reti accepted, Keres variation195.3%76.3%0.00 MB
A09Reti opening9932.3%55.6%0.02 MB
A09Reti, advance variation17129.2%48.5%0.04 MB
A10English opening73732.6%52.9%0.16 MB
A10English, Adorjan defence825.0%50.0%0.00 MB
A10English, Anglo-Dutch defense14835.1%53.4%0.04 MB
A11English, Caro-Kann defensive system19230.7%52.9%0.04 MB
A12English, Bled variation728.6%42.9%0.00 MB
A12English, Capablanca's variation2025.0%42.5%0.01 MB
A12English, Caro-Kann defensive system2528.0%74.0%0.01 MB
A12English, Caro-Kann defensive system, Bogolyubov variation2025.0%77.5%0.01 MB
A12English, London defensive system1030.0%45.0%0.00 MB
A12English, New York (London) defensive system633.3%50.0%0.00 MB
A12English, Torre defensive system1650.0%56.3%0.00 MB
A13English opening79733.0%54.4%0.17 MB
A13English opening, Agincourt variation40934.2%53.5%0.10 MB
A13English, Kurajica defence3324.2%33.3%0.01 MB
A13English, Neo-Catalan9633.3%53.1%0.02 MB
A13English, Neo-Catalan accepted16231.5%55.9%0.04 MB
A13English, Romanishin gambit2458.3%54.2%0.01 MB
A13English, Wimpey system2412.5%56.3%0.01 MB
A14English, Neo-Catalan declined15340.5%45.8%0.04 MB
A14English, Symmetrical, Keres defence24338.7%59.3%0.06 MB
A15English opening167432.2%54.9%0.36 MB
A15English, 1...Nf6 (Anglo-Indian defense)23433.3%50.0%0.06 MB
A16English opening17832.0%55.3%0.04 MB
A16English, Anglo-Gruenfeld defense2142.9%50.0%0.01 MB
A16English, Anglo-Gruenfeld defense, Korchnoi variation1100.0%50.0%0.00 MB
A16English, Anglo-Gruenfeld, Czech defense922.2%66.7%0.00 MB
A16English, Anglo-Gruenfeld, Smyslov defense944.4%55.6%0.00 MB
A17English opening5630.4%52.7%0.01 MB
A17English, Nimzo-English opening22130.3%53.2%0.05 MB
A17English, Queens Indian formation2931.0%60.3%0.01 MB
A17English, Queens Indian, Romanishin variation837.5%56.3%0.00 MB
A18English, Mikenas-Carls variation540.0%80.0%0.00 MB
A18English, Mikenas-Carls, Flohr variation728.6%71.4%0.00 MB
A18English, Mikenas-Carls, Kevitz variation20.0%0.0%0.00 MB
A19English, Mikenas-Carls, Sicilian variation3333.3%56.1%0.01 MB
A20English opening200233.5%54.9%0.40 MB
A20English, Nimzovich variation425.0%62.5%0.00 MB
A20English, Nimzovich, Flohr variation2425.0%33.3%0.01 MB
A21English opening50428.4%54.9%0.10 MB
A21English, Keres variation250.0%75.0%0.00 MB
A21English, Kramnik-Shirov counterattack29034.8%49.5%0.06 MB
A21English, Smyslov defence540.0%60.0%0.00 MB
A21English, Troeger defence5529.1%52.7%0.01 MB
A22English opening14728.6%51.0%0.03 MB
A22English, Bellon gambit10.0%100.0%0.00 MB
A22English, Bremen, Smyslov system60234.7%49.9%0.13 MB
A22English, Bremen, reverse dragon26535.1%51.5%0.06 MB
A22English, Carls' Bremen system7427.0%59.5%0.02 MB
A23English, Bremen system, Keres variation9235.9%51.6%0.02 MB
A24English, Bremen system with ...g6100.0%80.0%0.00 MB
A25English, Sicilian reversed21330.5%52.8%0.05 MB
A25English, closed system39632.3%56.3%0.09 MB
A25English, closed system (without ...d6)3636.1%54.2%0.01 MB
A25English, closed, 5.Rb115535.5%50.6%0.04 MB
A25English, closed, Hort variation933.3%72.2%0.00 MB
A25English, closed, Taimanov variation70.0%57.1%0.00 MB
A26English, Botvinnik system12834.4%50.0%0.03 MB
A26English, closed system10330.1%60.7%0.03 MB
A27English, three knights system6929.0%60.9%0.02 MB
A28English, Bradley Beach variation1323.1%42.3%0.00 MB
A28English, Nenarokov variation955.6%50.0%0.00 MB
A28English, four knights system6227.4%46.0%0.02 MB
A28English, four knights, 4.e317937.4%56.1%0.05 MB
A28English, four knights, Capablanca variation10838.0%53.2%0.03 MB
A28English, four knights, Marini variation18933.9%56.6%0.05 MB
A28English, four knights, Nimzovich variation7643.4%52.0%0.02 MB
A28English, four knights, Romanishin variation30137.5%52.7%0.07 MB
A28English, four knights, Stean variation4936.7%51.0%0.01 MB
A29English, four knights, kingside fianchetto333134.6%51.3%0.68 MB
A30English, symmetrical variation142932.5%51.6%0.30 MB
A30English, symmetrical, hedgehog system133434.0%57.8%0.29 MB
A30English, symmetrical, hedgehog, flexible formation15740.1%57.6%0.04 MB
A31English, symmetrical, Benoni formation28435.2%50.7%0.07 MB
A32English, symmetrical variation6536.9%50.8%0.02 MB
A33English, symmetrical variation30235.1%51.7%0.07 MB
A33English, symmetrical, Geller variation41629.8%55.8%0.09 MB
A34English, symmetrical variation37328.4%52.5%0.09 MB
A34English, symmetrical, Rubinstein system3941.0%56.4%0.01 MB
A34English, symmetrical, three knights system25040.0%50.4%0.06 MB
A35English, symmetrical variation7526.7%60.0%0.02 MB
A35English, symmetrical, four knights system65435.8%52.3%0.15 MB
A36English, symmetrical variation2814.3%67.9%0.01 MB
A36English, symmetrical, Botvinnik system2321.7%58.7%0.01 MB
A36English, symmetrical, Botvinnik system reversed2740.7%57.4%0.01 MB
A36English, ultra-symmetrical variation21234.4%50.7%0.05 MB
A37English, symmetrical variation13528.9%54.4%0.03 MB
A37English, symmetrical, Botvinnik system reversed13434.3%53.7%0.03 MB
A38English, symmetrical variation11838.1%52.1%0.03 MB
A38English, symmetrical, main line with d31533.3%43.3%0.01 MB
A39English, symmetrical, main line with d48733.3%50.0%0.02 MB
A40Beefeater defence2722.2%59.3%0.01 MB
A40Modern defence13333.8%55.3%0.03 MB
A40Queen's pawn145332.7%54.1%0.31 MB
A40Queen's pawn, Franco-Indian (Keres) defence29335.8%52.7%0.07 MB
A40Queen's pawn, Keres defence54929.7%56.2%0.12 MB
A40Queen's pawn, Lundin (Kevitz-Mikenas) defence1050.0%65.0%0.00 MB
A41Modern defence837.5%31.3%0.00 MB
A41Old Indian defence10827.8%42.6%0.03 MB
A41Old Indian, Tartakower (Wade) variation27430.7%58.8%0.07 MB
A41Queen's Pawn28729.6%54.2%0.07 MB
A41Robatsch defence, Rossolimo variation2437.5%60.4%0.01 MB
A42Modern defence, Averbakh system8626.7%56.4%0.02 MB
A42Modern defence, Averbakh system, Kotov variation1145.5%68.2%0.00 MB
A42Pterodactyl defence11729.1%57.3%0.03 MB
A43Old Benoni defence40032.5%58.8%0.09 MB
A43Old Benoni, Franco-Benoni defence714.3%50.0%0.00 MB
A43Old Benoni, Mujannah formation70.0%100.0%0.00 MB
A44Old Benoni defence10.0%0.0%0.00 MB
A44Semi-Benoni (`blockade variation')450.0%50.0%0.00 MB
A45Blackmar-Diemer gambit2630.8%61.5%0.01 MB
A45Queen's pawn game78129.6%52.3%0.18 MB
A45Trompovsky attack (Ruth, Opovcensky opening)62130.3%51.4%0.13 MB
A46Queen's pawn game85530.9%55.8%0.19 MB
A46Queen's pawn, Torre attack33030.0%49.2%0.07 MB
A46Queen's pawn, Torre attack, Wagner gambit30.0%33.3%0.00 MB
A46Queen's pawn, Yusupov-Rubinstein system15937.1%53.1%0.04 MB
A47Queen's Indian defence22229.7%54.1%0.05 MB
A47Queen's Indian, Marienbad system2825.0%33.9%0.01 MB
A47Queen's Indian, Marienbad system, Berg variation250.0%25.0%0.00 MB
A48King's Indian, East Indian defence31332.9%47.8%0.07 MB
A48King's Indian, London system17426.4%56.3%0.04 MB
A48King's Indian, Torre attack44334.5%49.5%0.10 MB
A49King's Indian, fianchetto without c435331.4%50.3%0.08 MB
A50Kevitz-Trajkovich defence12130.6%55.8%0.03 MB
A50Queen's Indian accelerated4723.4%62.8%0.01 MB
A50Queen's pawn game14326.6%49.0%0.03 MB
A51Budapest, Fajarowicz variation30.0%66.7%0.00 MB
A52Budapest, Adler variation850.0%75.0%0.00 MB
A52Budapest, Rubinstein variation714.3%78.6%0.00 MB
A53Old Indian defence38031.1%58.2%0.08 MB
A53Old Indian, Janowski variation2321.7%67.4%0.01 MB
A54Old Indian, Ukrainian variation2218.2%59.1%0.01 MB
A54Old Indian, Ukrainian variation, 4.Nf33716.2%59.5%0.01 MB
A55Old Indian, main line16227.8%62.0%0.04 MB
A56Benoni defence51426.8%63.0%0.10 MB
A56Benoni defence, Hromodka system10523.8%63.3%0.02 MB
A56Czech Benoni defence8827.3%70.5%0.02 MB
A56Czech Benoni, King's Indian system1747.1%64.7%0.01 MB
A57Benko gambit21429.0%57.9%0.05 MB
A57Benko gambit half accepted55032.2%57.5%0.11 MB
A57Benko gambit, Nescafe Frappe attack250.0%25.0%0.00 MB
A57Benko gambit, Zaitsev system3221.9%60.9%0.01 MB
A58Benko gambit accepted46430.2%58.0%0.09 MB
A58Benko gambit, Nd2 variation50.0%40.0%0.00 MB
A58Benko gambit, fianchetto variation24421.7%58.4%0.05 MB
A59Benko gambit2330.4%67.4%0.01 MB
A59Benko gambit, 7.e4862.5%43.8%0.00 MB
A59Benko gambit, Ne2 variation1040.0%60.0%0.00 MB
A59Benko gambit, main line33933.3%56.5%0.07 MB
A60Benoni defence5435.2%43.5%0.01 MB
A61Benoni defence29527.5%59.5%0.06 MB
A61Benoni, Nimzovich (knight's tour) variation26428.4%60.4%0.06 MB
A61Benoni, Uhlmann variation3627.8%50.0%0.01 MB
A61Benoni, fianchetto variation20.0%50.0%0.00 MB
A62Benoni, fianchetto variation16025.6%57.8%0.03 MB
A63Benoni, fianchetto, 9...Nbd72544.0%58.0%0.01 MB
A64Benoni, fianchetto, 11...Re810127.7%53.5%0.02 MB
A65Benoni, 6.e43231.3%50.0%0.01 MB
A66Benoni, pawn storm variation1100.0%50.0%0.00 MB
A67Benoni, Taimanov variation3030.0%58.3%0.01 MB
A68Benoni, four pawns attack30.0%66.7%0.00 MB
A69Benoni, four pawns attack, main line3627.8%33.3%0.01 MB
A70Benoni, classical with e4 and Nf348630.2%60.0%0.10 MB
A71Benoni, classical, 8.Bg55123.5%56.9%0.01 MB
A72Benoni, classical without 9.O-O4626.1%63.0%0.01 MB
A73Benoni, classical, 9.O-O1323.1%50.0%0.00 MB
A74Benoni, classical, 9...a6, 10.a4520.0%90.0%0.00 MB
A75Benoni, classical with ...a6 and 10...Bg43928.2%52.6%0.01 MB
A76Benoni, classical, 9...Re82326.1%56.5%0.01 MB
A77Benoni, classical, 9...Re8, 10.Nd29622.9%45.8%0.02 MB
A78Benoni, classical with ...Re8 and ...Na62927.6%62.1%0.01 MB
A79Benoni, classical, 11.f37218.1%68.8%0.02 MB
A80Dutch25733.5%54.9%0.06 MB
A80Dutch, 2.Bg5 variation8226.8%45.1%0.02 MB
A80Dutch, Manhattan (Alapin, Ulvestad) variation10.0%0.0%0.00 MB
A81Dutch defence59232.6%60.9%0.13 MB
A81Dutch defence, Blackburne variation714.3%78.6%0.00 MB
A82Dutch, Staunton gambit10.0%100.0%0.00 MB
A83Dutch, Staunton gambit, Nimzovich variation10.0%100.0%0.00 MB
A83Dutch, Staunton gambit, Staunton's line450.0%75.0%0.00 MB
A84Dutch defence21631.5%62.0%0.05 MB
A84Dutch defence, Rubinstein variation8522.4%53.5%0.02 MB
A84Dutch, Staunton gambit deferred425.0%12.5%0.00 MB
A85Dutch with c4 & Nc34235.7%65.5%0.01 MB
A86Dutch with c4 & g3650.0%58.3%0.00 MB
A86Dutch, Leningrad variation2437.5%60.4%0.01 MB
A87Dutch, Leningrad, main variation9732.0%56.2%0.02 MB
A88Dutch, Leningrad, main variation with c614634.9%57.9%0.04 MB
A89Dutch, Leningrad, main variation with Nc69931.3%60.1%0.02 MB
A90Dutch defence27522.9%62.4%0.06 MB
A90Dutch defence, Dutch-Indian (Nimzo-Dutch) variation3324.2%66.7%0.01 MB
A90Dutch-Indian, Alekhine variation2040.0%45.0%0.01 MB
A91Dutch defence1631.3%59.4%0.01 MB
A92Dutch defence825.0%75.0%0.00 MB
A92Dutch defence, Alekhine variation1540.0%66.7%0.00 MB
A92Dutch, stonewall variation1136.4%54.5%0.00 MB
A92Dutch, stonewall with Nc310.0%100.0%0.00 MB
A93Dutch, stonewall, Botwinnik variation2623.1%65.4%0.01 MB
A94Dutch, stonewall with Ba3837.5%43.8%0.00 MB
A95Dutch, stonewall with Nc33324.2%57.6%0.01 MB
A95Dutch, stonewall: Chekhover variation30.0%66.7%0.00 MB
A96Dutch, classical variation4219.0%64.3%0.01 MB
A97Dutch, Ilyin-Genevsky variation425.0%87.5%0.00 MB
A97Dutch, Ilyin-Genevsky, Winter variation825.0%37.5%0.00 MB
A98Dutch, Ilyin-Genevsky variation with Qc2850.0%50.0%0.00 MB
A99Dutch, Ilyin-Genevsky variation with b33321.2%71.2%0.01 MB
B00KP, Nimzovich defence6725.4%56.0%0.02 MB
B00KP, Nimzovich defence, Bogolyubov variation825.0%50.0%0.00 MB
B00King's pawn opening15233.6%62.2%0.03 MB
B00Owen defence5530.9%62.7%0.01 MB
B01Scandinavian (centre counter) defence24337.9%63.4%0.05 MB
B01Scandinavian defence8827.3%55.7%0.02 MB
B01Scandinavian defence, Gruenfeld variation633.3%50.0%0.00 MB
B01Scandinavian defence, Lasker variation2128.6%61.9%0.01 MB
B01Scandinavian gambit2540.0%48.0%0.01 MB
B01Scandinavian, Icelandic gambit1464.3%60.7%0.01 MB
B01Scandinavian, Marshall variation10535.2%56.7%0.03 MB
B01Scandinavian, Mieses-Kotrvc gambit10.0%0.0%0.00 MB
B01Scandinavian, Pytel-Wade variation8840.9%58.0%0.02 MB
B02Alekhine's defence1729.4%67.6%0.01 MB
B02Alekhine's defence, Brooklyn defence10.0%100.0%0.00 MB
B02Alekhine's defence, Krejcik variation2100.0%50.0%0.00 MB
B02Alekhine's defence, Maroczy variation757.1%42.9%0.00 MB
B02Alekhine's defence, Saemisch attack1323.1%57.7%0.00 MB
B02Alekhine's defence, Scandinavian variation2429.2%47.9%0.01 MB
B02Alekhine's defence, Spielmann variation10.0%100.0%0.00 MB
B02Alekhine's defence, Two pawns' (Lasker's) attack1450.0%60.7%0.00 MB
B03Alekhine's defence1030.0%55.0%0.00 MB
B03Alekhine's defence, Balogh variation1127.3%50.0%0.00 MB
B03Alekhine's defence, exchange variation16933.7%60.1%0.04 MB
B03Alekhine's defence, exchange, Karpov variation1100.0%50.0%0.00 MB
B03Alekhine's defence, four pawns attack825.0%50.0%0.00 MB
B03Alekhine's defence, four pawns attack, 7.Be31936.8%60.5%0.00 MB
B03Alekhine's defence, four pawns attack, Ilyin-Genevsky var.10.0%0.0%0.00 MB
B03Alekhine's defence, four pawns attack, Trifunovic variation20.0%100.0%0.00 MB
B03Alekhine's defence, four pawns attack, fianchetto variation742.9%64.3%0.00 MB
B04Alekhine's defence, modern variation6825.0%61.0%0.02 MB
B04Alekhine's defence, modern, Keres variation4334.9%64.0%0.01 MB
B04Alekhine's defence, modern, Larsen variation15532.3%59.4%0.04 MB
B04Alekhine's defence, modern, Schmid variation7724.7%64.3%0.02 MB
B04Alekhine's defence, modern, fianchetto variation12937.2%59.7%0.03 MB
B05Alekhine's defence, modern variation, 4...Bg415130.5%62.9%0.03 MB
B05Alekhine's defence, modern, Alekhine variation1100.0%50.0%0.00 MB
B05Alekhine's defence, modern, Flohr variation6341.3%61.9%0.02 MB
B05Alekhine's defence, modern, Panov variation1100.0%50.0%0.00 MB
B06Robatsch (modern) defence83431.2%56.4%0.17 MB
B06Robatsch defence17327.2%59.2%0.04 MB
B06Robatsch defence, Gurgenidze variation1910.5%57.9%0.01 MB
B06Robatsch defence, Pseudo-Austrian attack11227.7%65.6%0.03 MB
B06Robatsch defence, Two knights variation7129.6%51.4%0.02 MB
B06Robatsch defence, Two knights, Suttles variation35433.6%57.8%0.08 MB
B06Robatsch defence, three pawns attack540.0%40.0%0.00 MB
B07Pirc defence26033.5%54.0%0.06 MB
B07Pirc, 150 attack9732.0%59.3%0.02 MB
B07Pirc, Byrne variation6527.7%61.5%0.02 MB
B07Pirc, Holmov system837.5%43.8%0.00 MB
B07Pirc, Sveshnikov system8925.8%55.6%0.02 MB
B07Pirc, Ufimtsev-Pytel variation18030.6%58.6%0.04 MB
B07Pirc, bayonet (Mariotti) attack1330.8%69.2%0.00 MB
B07Robatsch defence, Geller's system13934.5%57.6%0.03 MB
B08Pirc, classical (two knights) system9928.3%51.5%0.02 MB
B08Pirc, classical system, 5.Be255135.8%57.1%0.12 MB
B08Pirc, classical, h3 system11635.3%57.3%0.03 MB
B09Pirc, Austrian attack3324.2%57.6%0.01 MB
B09Pirc, Austrian attack, 6.Bd326433.0%64.2%0.06 MB
B09Pirc, Austrian attack, 6.Be35930.5%52.5%0.01 MB
B09Pirc, Austrian attack, 6.e52138.1%42.9%0.01 MB
B09Pirc, Austrian attack, Ljubojevic variation20.0%100.0%0.00 MB
B09Pirc, Austrian attack, dragon formation8955.1%55.6%0.02 MB
B10Caro-Kann defence65527.0%53.2%0.13 MB
B10Caro-Kann, Goldman (Spielmann) variation333.3%50.0%0.00 MB
B10Caro-Kann, Two knights variation10324.3%59.7%0.03 MB
B10Caro-Kann, anti-Caro-Kann defence27728.9%55.2%0.06 MB
B10Caro-Kann, anti-anti-Caro-Kann defence39346.8%49.9%0.09 MB
B10Caro-Kann, closed (Breyer) variation5731.6%56.1%0.02 MB
B11Caro-Kann, Two knights, 3...Bg411230.4%49.1%0.03 MB
B12Caro-Kann defence7133.8%56.3%0.02 MB
B12Caro-Kann, 3.Nd27220.8%61.8%0.02 MB
B12Caro-Kann, Edinburgh variation1330.8%53.8%0.00 MB
B12Caro-Kann, Tartakower (fantasy) variation18337.2%51.4%0.04 MB
B12Caro-Kann, advance variation176130.4%55.7%0.36 MB
B12Caro-Kann, advance, Short variation520.0%50.0%0.00 MB
B12de Bruycker defence10.0%0.0%0.00 MB
B13Caro-Kann, Panov-Botvinnik attack19634.2%52.8%0.04 MB
B13Caro-Kann, Panov-Botvinnik, Czerniak variation714.3%35.7%0.00 MB
B13Caro-Kann, Panov-Botvinnik, Gunderam attack10.0%100.0%0.00 MB
B13Caro-Kann, Panov-Botvinnik, Herzog defence633.3%50.0%0.00 MB
B13Caro-Kann, Panov-Botvinnik, Reifir (Spielmann) variation10.0%100.0%0.00 MB
B13Caro-Kann, Panov-Botvinnik, normal variation3542.9%61.4%0.01 MB
B13Caro-Kann, exchange variation12926.4%51.9%0.03 MB
B13Caro-Kann, exchange, Rubinstein variation3151.6%64.5%0.01 MB
B14Caro-Kann, Panov-Botvinnik attack, 5...e683137.4%54.5%0.18 MB
B14Caro-Kann, Panov-Botvinnik attack, 5...g610242.2%59.3%0.03 MB
B15Caro-Kann defence7630.3%44.1%0.02 MB
B15Caro-Kann, Alekhine gambit450.0%50.0%0.00 MB
B15Caro-Kann, Forgacs variation1656.3%40.6%0.01 MB
B15Caro-Kann, Gurgenidze system11836.4%56.4%0.03 MB
B15Caro-Kann, Rasa-Studier gambit2100.0%50.0%0.00 MB
B15Caro-Kann, Tartakower (Nimzovich) variation3925.6%53.8%0.01 MB
B16Caro-Kann, Bronstein-Larsen variation8123.5%67.3%0.02 MB
B17Caro-Kann, Steinitz variation138432.9%53.0%0.30 MB
B18Caro-Kann, classical variation14025.7%56.4%0.03 MB
B18Caro-Kann, classical, 6.h420632.5%55.6%0.04 MB
B18Caro-Kann, classical, Flohr variation1844.4%55.6%0.01 MB
B18Caro-Kann, classical, Maroczy attack728.6%57.1%0.00 MB
B19Caro-Kann, classical, 7...Nd71838.9%58.3%0.01 MB
B19Caro-Kann, classical, Spassky variation203430.3%58.6%0.40 MB
B20Sicilian defence59927.4%49.6%0.12 MB
B20Sicilian, Keres variation (2.Ne2)6431.3%51.6%0.02 MB
B20Sicilian, Steinitz variation15729.9%53.2%0.04 MB
B21Sicilian, Andreaschek gambit20.0%50.0%0.00 MB
B21Sicilian, Grand Prix attack21734.6%54.1%0.05 MB
B21Sicilian, Smith-Morra gambit4425.0%48.9%0.01 MB
B22Sicilian, 2.c3, Heidenfeld variation728.6%42.9%0.00 MB
B22Sicilian, Alapin's variation (2.c3)195637.9%53.7%0.40 MB
B23Sicilian, Grand Prix attack13934.5%50.4%0.03 MB
B23Sicilian, Grand Prix attack, Schofman variation1346.2%46.2%0.00 MB
B23Sicilian, chameleon variation7835.9%61.5%0.02 MB
B23Sicilian, closed46526.0%49.1%0.10 MB
B23Sicilian, closed, 2...Nc634633.8%55.6%0.08 MB
B23Sicilian, closed, Korchnoi variation1353.8%34.6%0.00 MB
B24Sicilian, closed12923.3%44.2%0.03 MB
B24Sicilian, closed, Smyslov variation366.7%66.7%0.00 MB
B25Sicilian, closed2030.0%65.0%0.01 MB
B25Sicilian, closed, 6.Ne2 e5 (Botvinnik)119.1%22.7%0.00 MB
B25Sicilian, closed, 6.f49629.2%50.0%0.02 MB
B25Sicilian, closed, 6.f4 e5 (Botvinnik)3429.4%50.0%0.01 MB
B26Sicilian, closed, 6.Be312727.6%46.1%0.03 MB
B27Sicilian, Hungarian variation116530.6%55.4%0.25 MB
B27Sicilian, Katalimov variation1435.7%53.6%0.00 MB
B28Sicilian, O'Kelly variation5440.7%55.6%0.01 MB
B29Sicilian, Nimzovich-Rubinstein variation2937.9%63.8%0.01 MB
B29Sicilian, Nimzovich-Rubinstein; Rubinstein counter-gambit1020.0%50.0%0.00 MB
B30Sicilian defence68033.1%51.8%0.15 MB
B30Sicilian, Nimzovich-Rossolimo attack (without ...d6)163730.1%53.8%0.33 MB
B31Sicilian, Nimzovich-Rossolimo attack (with ...g6, without ...d6)159531.3%52.9%0.33 MB
B31Sicilian, Nimzovich-Rossolimo attack, Gurgenidze variation633.3%50.0%0.00 MB
B32Sicilian defence32130.8%47.8%0.07 MB
B32Sicilian, Flohr variation3732.4%45.9%0.01 MB
B32Sicilian, Labourdonnais-Loewenthal (Kalashnikov) variation45138.1%55.9%0.10 MB
B32Sicilian, Labourdonnais-Loewenthal variation12225.4%57.8%0.03 MB
B32Sicilian, Nimzovich variation1100.0%50.0%0.00 MB
B33Sicilian defence34527.8%49.0%0.07 MB
B33Sicilian, Pelikan (Lasker/Sveshnikov) variation25334.0%56.1%0.06 MB
B33Sicilian, Pelikan, Bird variation4134.1%53.7%0.01 MB
B33Sicilian, Pelikan, Chelyabinsk variation257129.9%55.8%0.47 MB
B33Sicilian, Sveshnikov variation182926.3%52.8%0.31 MB
B34Sicilian, accelerated fianchetto, exchange variation3100.0%50.0%0.00 MB
B34Sicilian, accelerated fianchetto, modern variation11336.3%56.2%0.03 MB
B35Sicilian, accelerated fianchetto, modern variation with Bc469635.2%50.9%0.14 MB
B36Sicilian, accelerated fianchetto, Gurgenidze variation6237.1%58.9%0.02 MB
B36Sicilian, accelerated fianchetto, Maroczy bind25534.9%57.1%0.06 MB
B37Sicilian, accelerated fianchetto, Maroczy bind, 5...Bg72445.8%39.6%0.01 MB
B37Sicilian, accelerated fianchetto, Simagin variation40.0%50.0%0.00 MB
B38Sicilian, accelerated fianchetto, Maroczy bind, 6.Be352637.8%55.6%0.11 MB
B39Sicilian, accelerated fianchetto, Breyer variation24530.2%60.8%0.05 MB
B40Sicilian defence210431.5%53.3%0.45 MB
B40Sicilian, Anderssen variation34032.1%56.0%0.07 MB
B40Sicilian, Pin variation (Sicilian counter-attack)50.0%40.0%0.00 MB
B40Sicilian, Pin, Koch variation1233.3%58.3%0.00 MB
B41Sicilian, Kan variation9729.9%45.9%0.03 MB
B41Sicilian, Kan, Maroczy bind (Reti variation)11832.2%50.0%0.03 MB
B41Sicilian, Kan, Maroczy bind - Bronstein variation742.9%78.6%0.00 MB
B42Sicilian, Kan, 5.Bd3289529.5%56.9%0.56 MB
B42Sicilian, Kan, Gipslis variation16930.8%