CCRL 40/40
Downloads and Statistics
April 11, 2008
|
Testing summary:
Total: 114'872 gamesplayed 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% |
CCRL 40/40
Downloads and Statistics
April 11, 2008
|
Testing summary:
Total: 114'872 gamesplayed 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% |
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.
| ECO | Opening | Number of games | Draws | White score | Commented PGN |
| A00 | Amar (Paris) opening | 10 | 50.0% | 35.0% | 0.01 MB |
| A00 | Amar gambit | 1 | 0.0% | 0.0% | 0.00 MB |
| A00 | Amsterdam attack | 1 | 0.0% | 100.0% | 0.00 MB |
| A00 | Anderssen's opening | 5 | 40.0% | 20.0% | 0.01 MB |
| A00 | Anti-Borg (Desprez) opening | 1 | 0.0% | 0.0% | 0.00 MB |
| A00 | Benko's opening | 317 | 37.2% | 51.4% | 0.22 MB |
| A00 | Benko's opening, reversed Alekhine | 9 | 44.4% | 44.4% | 0.01 MB |
| A00 | Clemenz (Mead's, Basman's or de Klerk's) opening | 2 | 100.0% | 50.0% | 0.00 MB |
| A00 | Dunst (Sleipner, Heinrichsen) opening | 5 | 40.0% | 60.0% | 0.00 MB |
| A00 | Durkin's attack | 4 | 50.0% | 25.0% | 0.00 MB |
| A00 | Grob's attack | 3 | 33.3% | 50.0% | 0.00 MB |
| A00 | Mieses opening | 1 | 100.0% | 50.0% | 0.00 MB |
| A00 | Novosibirsk opening | 1 | 100.0% | 50.0% | 0.00 MB |
| A00 | Polish (Sokolsky) opening | 21 | 33.3% | 31.0% | 0.02 MB |
| A00 | Polish, Outflank variation | 4 | 25.0% | 62.5% | 0.00 MB |
| A00 | Saragossa opening | 8 | 62.5% | 68.8% | 0.01 MB |
| A00 | Van't Kruijs opening | 9 | 22.2% | 55.6% | 0.01 MB |
| A01 | Nimzovich-Larsen attack | 23 | 17.4% | 43.5% | 0.02 MB |
| A01 | Nimzovich-Larsen attack, Dutch variation | 8 | 0.0% | 75.0% | 0.01 MB |
| A01 | Nimzovich-Larsen attack, English variation | 11 | 27.3% | 59.1% | 0.01 MB |
| A01 | Nimzovich-Larsen attack, Indian variation | 22 | 13.6% | 43.2% | 0.02 MB |
| A01 | Nimzovich-Larsen attack, classical variation | 37 | 37.8% | 54.1% | 0.03 MB |
| A01 | Nimzovich-Larsen attack, modern variation | 91 | 34.1% | 53.3% | 0.07 MB |
| A01 | Nimzovich-Larsen attack, symmetrical variation | 3 | 0.0% | 33.3% | 0.00 MB |
| A02 | Bird's opening | 5 | 40.0% | 60.0% | 0.00 MB |
| A02 | Bird, From gambit, Lasker variation | 1 | 0.0% | 100.0% | 0.00 MB |
| A03 | Bird's opening | 4 | 25.0% | 37.5% | 0.00 MB |
| A04 | Reti opening | 1073 | 36.9% | 53.7% | 0.72 MB |
| A04 | Reti v Dutch | 60 | 25.0% | 60.8% | 0.05 MB |
| A04 | Reti, Lisitsin gambit deferred | 2 | 50.0% | 25.0% | 0.00 MB |
| A04 | Reti, Pirc-Lisitsin gambit | 12 | 41.7% | 70.8% | 0.01 MB |
| A05 | Reti opening | 582 | 38.0% | 55.8% | 0.39 MB |
| A05 | Reti, King's Indian attack | 84 | 47.6% | 51.2% | 0.06 MB |
| A05 | Reti, King's Indian attack, Reti-Smyslov variation | 11 | 45.5% | 50.0% | 0.01 MB |
| A05 | Reti, King's Indian attack, Spassky's variation | 49 | 32.7% | 53.1% | 0.04 MB |
| A06 | Reti opening | 216 | 38.0% | 50.9% | 0.15 MB |
| A06 | Reti, Nimzovich-Larsen attack | 184 | 33.2% | 47.6% | 0.13 MB |
| A06 | Reti, old Indian attack | 21 | 33.3% | 40.5% | 0.02 MB |
| A06 | Santasiere's folly | 13 | 23.1% | 50.0% | 0.01 MB |
| A06 | Tennison (Lemberg, Zukertort) gambit | 1 | 0.0% | 100.0% | 0.00 MB |
| A07 | Reti, King's Indian attack | 67 | 32.8% | 46.3% | 0.05 MB |
| A07 | Reti, King's Indian attack (Barcza system) | 601 | 41.3% | 54.7% | 0.43 MB |
| A07 | Reti, King's Indian attack (with ...c5) | 54 | 44.4% | 51.9% | 0.04 MB |
| A07 | Reti, King's Indian attack, Keres variation | 47 | 44.7% | 43.6% | 0.04 MB |
| A07 | Reti, King's Indian attack, Pachman system | 7 | 28.6% | 57.1% | 0.01 MB |
| A07 | Reti, King's Indian attack, Yugoslav variation | 220 | 36.8% | 47.5% | 0.16 MB |
| A08 | Reti, King's Indian attack | 61 | 34.4% | 54.9% | 0.05 MB |
| A08 | Reti, King's Indian attack, French variation | 13 | 23.1% | 42.3% | 0.01 MB |
| A09 | Reti accepted | 33 | 48.5% | 48.5% | 0.03 MB |
| A09 | Reti accepted, Keres variation | 9 | 22.2% | 77.8% | 0.01 MB |
| A09 | Reti opening | 22 | 45.5% | 54.5% | 0.02 MB |
| A09 | Reti, advance variation | 73 | 43.8% | 47.9% | 0.06 MB |
| A10 | English opening | 333 | 42.9% | 53.9% | 0.21 MB |
| A10 | English, Adorjan defence | 16 | 50.0% | 56.3% | 0.01 MB |
| A10 | English, Anglo-Dutch defense | 33 | 36.4% | 51.5% | 0.03 MB |
| A10 | English, Jaenisch gambit | 2 | 0.0% | 100.0% | 0.00 MB |
| A11 | English, Caro-Kann defensive system | 68 | 44.1% | 54.4% | 0.05 MB |
| A12 | English, Bled variation | 5 | 20.0% | 90.0% | 0.00 MB |
| A12 | English, Capablanca's variation | 11 | 54.5% | 36.4% | 0.01 MB |
| A12 | English, Caro-Kann defensive system | 8 | 62.5% | 56.3% | 0.01 MB |
| A12 | English, Caro-Kann defensive system, Bogolyubov variation | 7 | 28.6% | 71.4% | 0.01 MB |
| A12 | English, London defensive system | 10 | 30.0% | 25.0% | 0.01 MB |
| A12 | English, New York (London) defensive system | 3 | 66.7% | 33.3% | 0.00 MB |
| A12 | English, Torre defensive system | 13 | 53.8% | 50.0% | 0.01 MB |
| A13 | English opening | 362 | 34.0% | 50.7% | 0.25 MB |
| A13 | English opening, Agincourt variation | 116 | 46.6% | 54.3% | 0.10 MB |
| A13 | English, Kurajica defence | 4 | 25.0% | 37.5% | 0.00 MB |
| A13 | English, Neo-Catalan | 27 | 40.7% | 68.5% | 0.02 MB |
| A13 | English, Neo-Catalan accepted | 36 | 41.7% | 54.2% | 0.03 MB |
| A13 | English, Romanishin gambit | 7 | 85.7% | 57.1% | 0.01 MB |
| A13 | English, Wimpey system | 11 | 54.5% | 63.6% | 0.01 MB |
| A14 | English, Neo-Catalan declined | 28 | 53.6% | 55.4% | 0.02 MB |
| A14 | English, Symmetrical, Keres defence | 108 | 50.9% | 55.1% | 0.08 MB |
| A15 | English opening | 739 | 38.7% | 53.0% | 0.50 MB |
| A15 | English, 1...Nf6 (Anglo-Indian defense) | 145 | 29.0% | 57.2% | 0.10 MB |
| A16 | English opening | 130 | 28.5% | 52.7% | 0.09 MB |
| A16 | English, Anglo-Gruenfeld defense | 7 | 42.9% | 50.0% | 0.01 MB |
| A16 | English, Anglo-Gruenfeld, Czech defense | 6 | 50.0% | 41.7% | 0.01 MB |
| A16 | English, Anglo-Gruenfeld, Smyslov defense | 5 | 60.0% | 70.0% | 0.00 MB |
| A17 | English opening | 32 | 43.8% | 56.3% | 0.02 MB |
| A17 | English, Nimzo-English opening | 72 | 30.6% | 59.7% | 0.05 MB |
| A17 | English, Queens Indian formation | 13 | 38.5% | 50.0% | 0.01 MB |
| A17 | English, Queens Indian, Romanishin variation | 3 | 66.7% | 33.3% | 0.00 MB |
| A18 | English, Mikenas-Carls variation | 1 | 0.0% | 100.0% | 0.00 MB |
| A18 | English, Mikenas-Carls, Flohr variation | 5 | 20.0% | 70.0% | 0.00 MB |
| A19 | English, Mikenas-Carls, Sicilian variation | 19 | 36.8% | 44.7% | 0.02 MB |
| A20 | English opening | 882 | 40.0% | 54.8% | 0.56 MB |
| A20 | English, Nimzovich variation | 6 | 16.7% | 91.7% | 0.01 MB |
| A20 | English, Nimzovich, Flohr variation | 15 | 26.7% | 40.0% | 0.01 MB |
| A21 | English opening | 217 | 30.0% | 59.2% | 0.14 MB |
| A21 | English, Keres variation | 2 | 50.0% | 25.0% | 0.00 MB |
| A21 | English, Kramnik-Shirov counterattack | 76 | 31.6% | 51.3% | 0.06 MB |
| A21 | English, Smyslov defence | 5 | 20.0% | 30.0% | 0.00 MB |
| A21 | English, Troeger defence | 16 | 25.0% | 62.5% | 0.01 MB |
| A22 | English opening | 115 | 31.3% | 55.7% | 0.08 MB |
| A22 | English, Bremen, Smyslov system | 215 | 34.4% | 47.9% | 0.14 MB |
| A22 | English, Bremen, reverse dragon | 103 | 38.8% | 49.5% | 0.08 MB |
| A22 | English, Carls' Bremen system | 34 | 35.3% | 61.8% | 0.03 MB |
| A23 | English, Bremen system, Keres variation | 29 | 20.7% | 62.1% | 0.02 MB |
| A24 | English, Bremen system with ...g6 | 8 | 50.0% | 62.5% | 0.01 MB |
| A25 | English, Sicilian reversed | 89 | 31.5% | 48.3% | 0.06 MB |
| A25 | English, closed system | 155 | 35.5% | 57.1% | 0.11 MB |
| A25 | English, closed system (without ...d6) | 21 | 38.1% | 57.1% | 0.02 MB |
| A25 | English, closed, 5.Rb1 | 35 | 51.4% | 54.3% | 0.03 MB |
| A25 | English, closed, 5.Rb1 Taimanov variation | 1 | 0.0% | 0.0% | 0.00 MB |
| A25 | English, closed, Hort variation | 2 | 50.0% | 25.0% | 0.00 MB |
| A26 | English, Botvinnik system | 31 | 25.8% | 38.7% | 0.02 MB |
| A26 | English, closed system | 35 | 25.7% | 52.9% | 0.03 MB |
| A27 | English, three knights system | 37 | 27.0% | 51.4% | 0.03 MB |
| A28 | English, Bradley Beach variation | 9 | 33.3% | 38.9% | 0.01 MB |
| A28 | English, Nenarokov variation | 11 | 45.5% | 68.2% | 0.01 MB |
| A28 | English, four knights system | 62 | 46.8% | 49.2% | 0.05 MB |
| A28 | English, four knights, 4.e3 | 214 | 34.6% | 54.2% | 0.14 MB |
| A28 | English, four knights, Capablanca variation | 40 | 42.5% | 53.8% | 0.03 MB |
| A28 | English, four knights, Marini variation | 54 | 44.4% | 46.3% | 0.04 MB |
| A28 | English, four knights, Nimzovich variation | 35 | 34.3% | 42.9% | 0.03 MB |
| A28 | English, four knights, Romanishin variation | 81 | 50.6% | 57.4% | 0.06 MB |
| A28 | English, four knights, Stean variation | 21 | 38.1% | 61.9% | 0.01 MB |
| A29 | English, four knights, kingside fianchetto | 1250 | 37.5% | 51.8% | 0.76 MB |
| A30 | English, symmetrical variation | 713 | 35.8% | 55.2% | 0.46 MB |
| A30 | English, symmetrical, hedgehog system | 455 | 38.7% | 57.1% | 0.30 MB |
| A30 | English, symmetrical, hedgehog, flexible formation | 74 | 43.2% | 56.8% | 0.05 MB |
| A31 | English, symmetrical, Benoni formation | 120 | 44.2% | 58.8% | 0.10 MB |
| A32 | English, symmetrical variation | 20 | 35.0% | 62.5% | 0.02 MB |
| A33 | English, symmetrical variation | 161 | 44.1% | 55.6% | 0.11 MB |
| A33 | English, symmetrical, Geller variation | 105 | 30.5% | 56.2% | 0.08 MB |
| A34 | English, symmetrical variation | 221 | 34.4% | 56.1% | 0.15 MB |
| A34 | English, symmetrical, Rubinstein system | 15 | 40.0% | 46.7% | 0.01 MB |
| A34 | English, symmetrical, three knights system | 83 | 42.2% | 60.8% | 0.07 MB |
| A35 | English, symmetrical variation | 35 | 28.6% | 48.6% | 0.04 MB |
| A35 | English, symmetrical, four knights system | 274 | 40.5% | 52.7% | 0.19 MB |
| A36 | English, symmetrical variation | 24 | 20.8% | 68.8% | 0.02 MB |
| A36 | English, symmetrical, Botvinnik system | 7 | 42.9% | 50.0% | 0.01 MB |
| A36 | English, symmetrical, Botvinnik system reversed | 7 | 0.0% | 42.9% | 0.01 MB |
| A36 | English, ultra-symmetrical variation | 75 | 25.3% | 46.0% | 0.06 MB |
| A37 | English, symmetrical variation | 36 | 25.0% | 54.2% | 0.03 MB |
| A37 | English, symmetrical, Botvinnik system reversed | 65 | 26.2% | 54.6% | 0.05 MB |
| A38 | English, symmetrical variation | 75 | 44.0% | 47.3% | 0.06 MB |
| A38 | English, symmetrical, main line with b3 | 1 | 100.0% | 50.0% | 0.00 MB |
| A38 | English, symmetrical, main line with d3 | 5 | 0.0% | 0.0% | 0.01 MB |
| A39 | English, symmetrical, main line with d4 | 84 | 44.0% | 58.9% | 0.06 MB |
| A40 | Beefeater defence | 3 | 33.3% | 83.3% | 0.00 MB |
| A40 | Modern defence | 46 | 26.1% | 69.6% | 0.03 MB |
| A40 | Polish defence | 5 | 80.0% | 60.0% | 0.01 MB |
| A40 | Queen's pawn | 608 | 38.3% | 56.0% | 0.42 MB |
| A40 | Queen's pawn, Charlick (Englund) gambit | 1 | 100.0% | 50.0% | 0.00 MB |
| A40 | Queen's pawn, English defence | 16 | 25.0% | 68.8% | 0.01 MB |
| A40 | Queen's pawn, Franco-Indian (Keres) defence | 92 | 40.2% | 54.9% | 0.07 MB |
| A40 | Queen's pawn, Keres defence | 157 | 36.3% | 58.3% | 0.11 MB |
| A40 | Queen's pawn, Lundin (Kevitz-Mikenas) defence | 16 | 12.5% | 62.5% | 0.01 MB |
| A41 | Old Indian defence | 35 | 34.3% | 62.9% | 0.03 MB |
| A41 | Old Indian, Tartakower (Wade) variation | 48 | 35.4% | 59.4% | 0.03 MB |
| A41 | Queen's Pawn | 64 | 31.3% | 51.6% | 0.05 MB |
| A41 | Robatsch defence, Rossolimo variation | 8 | 37.5% | 56.3% | 0.01 MB |
| A42 | Modern defence, Averbakh system | 14 | 42.9% | 64.3% | 0.02 MB |
| A42 | Modern defence, Averbakh system, Kotov variation | 1 | 0.0% | 100.0% | 0.00 MB |
| A42 | Pterodactyl defence | 18 | 50.0% | 63.9% | 0.02 MB |
| A43 | Hawk (Habichd) defence | 1 | 0.0% | 0.0% | 0.00 MB |
| A43 | Old Benoni defence | 78 | 28.2% | 59.0% | 0.06 MB |
| A43 | Old Benoni, Franco-Benoni defence | 2 | 50.0% | 25.0% | 0.00 MB |
| A43 | Old Benoni, Mujannah formation | 4 | 25.0% | 87.5% | 0.00 MB |
| A43 | Old Benoni, Schmid's system | 2 | 0.0% | 0.0% | 0.00 MB |
| A44 | Old Benoni defence | 4 | 100.0% | 50.0% | 0.00 MB |
| A44 | Semi-Benoni (`blockade variation') | 2 | 50.0% | 75.0% | 0.00 MB |
| A45 | Blackmar-Diemer gambit | 9 | 11.1% | 50.0% | 0.01 MB |
| A45 | Canard opening | 10 | 30.0% | 25.0% | 0.01 MB |
| A45 | Queen's pawn game | 409 | 38.6% | 53.1% | 0.28 MB |
| A45 | Trompovsky attack (Ruth, Opovcensky opening) | 216 | 32.9% | 52.5% | 0.15 MB |
| A46 | Queen's pawn game | 361 | 32.4% | 56.4% | 0.24 MB |
| A46 | Queen's pawn, Torre attack | 56 | 41.1% | 49.1% | 0.04 MB |
| A46 | Queen's pawn, Torre attack, Wagner gambit | 1 | 0.0% | 100.0% | 0.00 MB |
| A46 | Queen's pawn, Yusupov-Rubinstein system | 44 | 38.6% | 62.5% | 0.04 MB |
| A47 | Queen's Indian defence | 89 | 36.0% | 59.6% | 0.07 MB |
| A47 | Queen's Indian, Marienbad system | 19 | 31.6% | 57.9% | 0.02 MB |
| A47 | Queen's Indian, Marienbad system, Berg variation | 3 | 33.3% | 50.0% | 0.00 MB |
| A48 | King's Indian, East Indian defence | 163 | 36.8% | 50.3% | 0.12 MB |
| A48 | King's Indian, London system | 72 | 41.7% | 50.0% | 0.06 MB |
| A48 | King's Indian, Torre attack | 126 | 31.7% | 55.6% | 0.09 MB |
| A49 | King's Indian, fianchetto without c4 | 146 | 35.6% | 58.9% | 0.10 MB |
| A50 | Kevitz-Trajkovich defence | 41 | 43.9% | 48.8% | 0.03 MB |
| A50 | Queen's Indian accelerated | 22 | 31.8% | 52.3% | 0.02 MB |
| A50 | Queen's pawn game | 103 | 29.1% | 60.2% | 0.07 MB |
| A51 | Budapest defence declined | 2 | 0.0% | 50.0% | 0.00 MB |
| A51 | Budapest, Fajarowicz variation | 5 | 0.0% | 60.0% | 0.00 MB |
| A52 | Budapest, Adler variation | 8 | 50.0% | 25.0% | 0.01 MB |
| A52 | Budapest, Alekhine, Abonyi variation | 2 | 0.0% | 50.0% | 0.00 MB |
| A52 | Budapest, Rubinstein variation | 8 | 50.0% | 62.5% | 0.01 MB |
| A53 | Old Indian defence | 140 | 32.1% | 59.6% | 0.10 MB |
| A53 | Old Indian, Janowski variation | 9 | 22.2% | 66.7% | 0.01 MB |
| A54 | Old Indian, Ukrainian variation | 10 | 60.0% | 70.0% | 0.01 MB |
| A54 | Old Indian, Ukrainian variation, 4.Nf3 | 11 | 45.5% | 59.1% | 0.01 MB |
| A55 | Old Indian, main line | 64 | 46.9% | 60.9% | 0.05 MB |
| A56 | Benoni defence | 67 | 29.9% | 55.2% | 0.05 MB |
| A56 | Benoni defence, Hromodka system | 19 | 15.8% | 76.3% | 0.02 MB |
| A56 | Czech Benoni defence | 19 | 31.6% | 78.9% | 0.02 MB |
| A56 | Czech Benoni, King's Indian system | 4 | 25.0% | 37.5% | 0.00 MB |
| A56 | Vulture defence | 1 | 100.0% | 50.0% | 0.00 MB |
| A57 | Benko gambit | 51 | 23.5% | 62.7% | 0.04 MB |
| A57 | Benko gambit half accepted | 80 | 30.0% | 46.3% | 0.06 MB |
| A57 | Benko gambit, Zaitsev system | 8 | 12.5% | 6.3% | 0.01 MB |
| A58 | Benko gambit accepted | 67 | 41.8% | 53.7% | 0.04 MB |
| A58 | Benko gambit, fianchetto variation | 19 | 47.4% | 50.0% | 0.02 MB |
| A59 | Benko gambit | 1 | 0.0% | 0.0% | 0.00 MB |
| A59 | Benko gambit, 7.e4 | 1 | 100.0% | 50.0% | 0.00 MB |
| A59 | Benko gambit, main line | 14 | 28.6% | 64.3% | 0.01 MB |
| A60 | Benoni defence | 13 | 30.8% | 69.2% | 0.01 MB |
| A61 | Benoni defence | 69 | 18.8% | 71.7% | 0.05 MB |
| A61 | Benoni, Nimzovich (knight's tour) variation | 47 | 23.4% | 60.6% | 0.03 MB |
| A61 | Benoni, Uhlmann variation | 8 | 50.0% | 50.0% | 0.01 MB |
| A61 | Benoni, fianchetto variation | 2 | 0.0% | 100.0% | 0.00 MB |
| A62 | Benoni, fianchetto variation | 53 | 30.2% | 62.3% | 0.04 MB |
| A63 | Benoni, fianchetto, 9...Nbd7 | 5 | 20.0% | 70.0% | 0.01 MB |
| A64 | Benoni, fianchetto, 11...Re8 | 16 | 18.8% | 34.4% | 0.01 MB |
| A65 | Benoni, 6.e4 | 2 | 0.0% | 0.0% | 0.00 MB |
| A67 | Benoni, Taimanov variation | 4 | 0.0% | 100.0% | 0.00 MB |
| A69 | Benoni, four pawns attack, main line | 9 | 55.6% | 50.0% | 0.01 MB |
| A70 | Benoni, classical with e4 and Nf3 | 84 | 27.4% | 55.4% | 0.05 MB |
| A70 | Benoni, classical without 9.O-O | 1 | 0.0% | 0.0% | 0.00 MB |
| A71 | Benoni, classical, 8.Bg5 | 15 | 13.3% | 46.7% | 0.01 MB |
| A72 | Benoni, classical without 9.O-O | 8 | 12.5% | 81.3% | 0.01 MB |
| A73 | Benoni, classical, 9.O-O | 7 | 0.0% | 71.4% | 0.01 MB |
| A74 | Benoni, classical, 9...a6, 10.a4 | 1 | 0.0% | 100.0% | 0.00 MB |
| A75 | Benoni, classical with ...a6 and 10...Bg4 | 9 | 22.2% | 55.6% | 0.01 MB |
| A76 | Benoni, classical, 9...Re8 | 10 | 20.0% | 30.0% | 0.01 MB |
| A77 | Benoni, classical, 9...Re8, 10.Nd2 | 19 | 21.1% | 68.4% | 0.01 MB |
| A78 | Benoni, classical with ...Re8 and ...Na6 | 9 | 44.4% | 55.6% | 0.01 MB |
| A79 | Benoni, classical, 11.f3 | 12 | 41.7% | 54.2% | 0.01 MB |
| A80 | Dutch | 51 | 31.4% | 64.7% | 0.04 MB |
| A80 | Dutch, 2.Bg5 variation | 17 | 29.4% | 55.9% | 0.01 MB |
| A80 | Dutch, Manhattan (Alapin, Ulvestad) variation | 1 | 100.0% | 50.0% | 0.00 MB |
| A81 | Dutch defence | 128 | 34.4% | 56.3% | 0.10 MB |
| A81 | Dutch defence, Blackburne variation | 1 | 0.0% | 0.0% | 0.00 MB |
| A82 | Dutch, Balogh defence | 1 | 0.0% | 100.0% | 0.00 MB |
| A82 | Dutch, Staunton gambit, Tartakower variation | 1 | 100.0% | 50.0% | 0.00 MB |
| A83 | Dutch, Staunton gambit, Staunton's line | 1 | 100.0% | 50.0% | 0.00 MB |
| A84 | Dutch defence | 54 | 33.3% | 57.4% | 0.04 MB |
| A84 | Dutch defence, Rubinstein variation | 27 | 40.7% | 50.0% | 0.02 MB |
| A84 | Dutch, Staunton gambit deferred | 8 | 75.0% | 37.5% | 0.01 MB |
| A85 | Dutch with c4 & Nc3 | 10 | 20.0% | 60.0% | 0.01 MB |
| A86 | Dutch with c4 & g3 | 4 | 50.0% | 25.0% | 0.00 MB |
| A86 | Dutch, Leningrad variation | 6 | 50.0% | 58.3% | 0.01 MB |
| A87 | Dutch, Leningrad, main variation | 16 | 62.5% | 62.5% | 0.02 MB |
| A88 | Dutch, Leningrad, main variation with c6 | 34 | 26.5% | 72.1% | 0.03 MB |
| A89 | Dutch, Leningrad, main variation with Nc6 | 24 | 33.3% | 66.7% | 0.02 MB |
| A90 | Dutch defence | 43 | 30.2% | 59.3% | 0.04 MB |
| A90 | Dutch defence, Dutch-Indian (Nimzo-Dutch) variation | 4 | 25.0% | 37.5% | 0.01 MB |
| A90 | Dutch-Indian, Alekhine variation | 4 | 0.0% | 50.0% | 0.00 MB |
| A91 | Dutch defence | 3 | 33.3% | 83.3% | 0.00 MB |
| A92 | Dutch defence | 1 | 0.0% | 100.0% | 0.00 MB |
| A92 | Dutch, stonewall variation | 1 | 100.0% | 50.0% | 0.00 MB |
| A92 | Dutch, stonewall with Nc3 | 3 | 33.3% | 50.0% | 0.00 MB |
| A93 | Dutch, stonewall, Botwinnik variation | 8 | 25.0% | 50.0% | 0.01 MB |
| A94 | Dutch, stonewall with Ba3 | 3 | 100.0% | 50.0% | 0.00 MB |
| A95 | Dutch, stonewall with Nc3 | 8 | 12.5% | 43.8% | 0.01 MB |
| A96 | Dutch, classical variation | 10 | 30.0% | 65.0% | 0.01 MB |
| A97 | Dutch, Ilyin-Genevsky variation | 1 | 0.0% | 100.0% | 0.00 MB |
| A97 | Dutch, Ilyin-Genevsky, Winter variation | 7 | 57.1% | 57.1% | 0.01 MB |
| A98 | Dutch, Ilyin-Genevsky variation with Qc2 | 1 | 100.0% | 50.0% | 0.00 MB |
| A99 | Dutch, Ilyin-Genevsky variation with b3 | 5 | 60.0% | 70.0% | 0.01 MB |
| B00 | KP, Nimzovich defence | 22 | 40.9% | 61.4% | 0.02 MB |
| B00 | KP, Nimzovich defence, Bogolyubov variation | 5 | 20.0% | 70.0% | 0.00 MB |
| B00 | King's pawn opening | 113 | 26.5% | 58.4% | 0.08 MB |
| B00 | Lemming defence | 2 | 50.0% | 25.0% | 0.00 MB |
| B00 | Owen defence | 33 | 33.3% | 65.2% | 0.03 MB |
| B00 | Reversed Grob (Borg/Basman defence/macho Grob) | 4 | 25.0% | 87.5% | 0.00 MB |
| B01 | Scandinavian (centre counter) defence | 87 | 40.2% | 56.9% | 0.06 MB |
| B01 | Scandinavian defence | 37 | 32.4% | 54.1% | 0.03 MB |
| B01 | Scandinavian defence, Gruenfeld variation | 2 | 0.0% | 50.0% | 0.00 MB |
| B01 | Scandinavian defence, Lasker variation | 13 | 38.5% | 65.4% | 0.01 MB |
| B01 | Scandinavian gambit | 15 | 53.3% | 60.0% | 0.02 MB |
| B01 | Scandinavian, Anderssen counter-attack orthodox attack | 1 | 0.0% | 100.0% | 0.00 MB |
| B01 | Scandinavian, Anderssen counter-attack, Collijn variation | 1 | 0.0% | 100.0% | 0.00 MB |
| B01 | Scandinavian, Icelandic gambit | 10 | 50.0% | 55.0% | 0.01 MB |
| B01 | Scandinavian, Marshall variation | 83 | 41.0% | 63.9% | 0.05 MB |
| B01 | Scandinavian, Pytel-Wade variation | 21 | 52.4% | 54.8% | 0.02 MB |
| B02 | Alekhine's defence | 10 | 10.0% | 35.0% | 0.01 MB |
| B02 | Alekhine's defence, Brooklyn defence | 5 | 20.0% | 30.0% | 0.01 MB |
| B02 | Alekhine's defence, Maroczy variation | 13 | 30.8% | 53.8% | 0.01 MB |
| B02 | Alekhine's defence, Saemisch attack | 5 | 60.0% | 50.0% | 0.00 MB |
| B02 | Alekhine's defence, Scandinavian variation | 7 | 0.0% | 42.9% | 0.01 MB |
| B02 | Alekhine's defence, Two pawns' (Lasker's) attack | 11 | 45.5% | 59.1% | 0.01 MB |
| B03 | Alekhine's defence | 4 | 50.0% | 75.0% | 0.00 MB |
| B03 | Alekhine's defence, Balogh variation | 1 | 0.0% | 100.0% | 0.00 MB |
| B03 | Alekhine's defence, O'Sullivan gambit | 3 | 66.7% | 66.7% | 0.00 MB |
| B03 | Alekhine's defence, exchange variation | 51 | 31.4% | 56.9% | 0.04 MB |
| B03 | Alekhine's defence, exchange, Karpov variation | 1 | 100.0% | 50.0% | 0.00 MB |
| B03 | Alekhine's defence, four pawns attack | 7 | 28.6% | 57.1% | 0.01 MB |
| B03 | Alekhine's defence, four pawns attack, 7.Be3 | 12 | 50.0% | 75.0% | 0.01 MB |
| B03 | Alekhine's defence, four pawns attack, fianchetto variation | 4 | 0.0% | 50.0% | 0.00 MB |
| B04 | Alekhine's defence, modern variation | 13 | 46.2% | 69.2% | 0.01 MB |
| B04 | Alekhine's defence, modern, Keres variation | 10 | 60.0% | 60.0% | 0.01 MB |
| B04 | Alekhine's defence, modern, Larsen variation | 28 | 39.3% | 62.5% | 0.02 MB |
| B04 | Alekhine's defence, modern, Schmid variation | 11 | 36.4% | 54.5% | 0.01 MB |
| B04 | Alekhine's defence, modern, fianchetto variation | 20 | 35.0% | 67.5% | 0.02 MB |
| B05 | Alekhine's defence, modern variation, 4...Bg4 | 53 | 32.1% | 68.9% | 0.04 MB |
| B05 | Alekhine's defence, modern, Alekhine variation | 1 | 100.0% | 50.0% | 0.00 MB |
| B05 | Alekhine's defence, modern, Flohr variation | 8 | 12.5% | 68.8% | 0.01 MB |
| B06 | Robatsch (modern) defence | 193 | 28.5% | 57.8% | 0.14 MB |
| B06 | Robatsch defence | 27 | 37.0% | 51.9% | 0.02 MB |
| B06 | Robatsch defence, Gurgenidze variation | 3 | 0.0% | 66.7% | 0.00 MB |
| B06 | Robatsch defence, Pseudo-Austrian attack | 22 | 18.2% | 72.7% | 0.02 MB |
| B06 | Robatsch defence, Two knights variation | 4 | 0.0% | 75.0% | 0.00 MB |
| B06 | Robatsch defence, Two knights, Suttles variation | 48 | 37.5% | 56.3% | 0.04 MB |
| B06 | Robatsch defence, three pawns attack | 1 | 100.0% | 50.0% | 0.00 MB |
| B07 | Pirc defence | 73 | 28.8% | 52.7% | 0.05 MB |
| B07 | Pirc, 150 attack | 53 | 41.5% | 58.5% | 0.04 MB |
| B07 | Pirc, Byrne variation | 31 | 48.4% | 59.7% | 0.03 MB |
| B07 | Pirc, Holmov system | 2 | 100.0% | 50.0% | 0.00 MB |
| B07 | Pirc, Sveshnikov system | 26 | 34.6% | 44.2% | 0.02 MB |
| B07 | Pirc, Ufimtsev-Pytel variation | 44 | 31.8% | 54.5% | 0.04 MB |
| B07 | Pirc, bayonet (Mariotti) attack | 2 | 100.0% | 50.0% | 0.00 MB |
| B07 | Robatsch defence, Geller's system | 36 | 33.3% | 63.9% | 0.03 MB |
| B08 | Pirc, classical (two knights) system | 43 | 32.6% | 62.8% | 0.03 MB |
| B08 | Pirc, classical system, 5.Be2 | 139 | 33.1% | 54.7% | 0.10 MB |
| B08 | Pirc, classical, h3 system | 37 | 48.6% | 48.6% | 0.03 MB |
| B09 | Pirc, Austrian attack | 14 | 35.7% | 53.6% | 0.01 MB |
| B09 | Pirc, Austrian attack, 6.Bd3 | 47 | 40.4% | 45.7% | 0.04 MB |
| B09 | Pirc, Austrian attack, 6.Be3 | 9 | 22.2% | 66.7% | 0.01 MB |
| B09 | Pirc, Austrian attack, 6.e5 | 5 | 60.0% | 50.0% | 0.01 MB |
| B09 | Pirc, Austrian attack, Ljubojevic variation | 1 | 0.0% | 0.0% | 0.00 MB |
| B09 | Pirc, Austrian attack, dragon formation | 26 | 50.0% | 67.3% | 0.02 MB |
| B10 | Caro-Kann defence | 354 | 34.2% | 57.2% | 0.23 MB |
| B10 | Caro-Kann, Goldman (Spielmann) variation | 4 | 25.0% | 37.5% | 0.00 MB |
| B10 | Caro-Kann, Two knights variation | 49 | 40.8% | 55.1% | 0.04 MB |
| B10 | Caro-Kann, anti-Caro-Kann defence | 121 | 28.9% | 59.9% | 0.08 MB |
| B10 | Caro-Kann, anti-anti-Caro-Kann defence | 101 | 45.5% | 49.5% | 0.07 MB |
| B10 | Caro-Kann, closed (Breyer) variation | 37 | 35.1% | 50.0% | 0.03 MB |
| B11 | Caro-Kann, Two knights, 3...Bg4 | 40 | 30.0% | 57.5% | 0.03 MB |
| B12 | Caro-Kann defence | 58 | 31.0% | 55.2% | 0.04 MB |
| B12 | Caro-Kann, 3.Nd2 | 46 | 43.5% | 54.3% | 0.03 MB |
| B12 | Caro-Kann, Edinburgh variation | 4 | 50.0% | 25.0% | 0.00 MB |
| B12 | Caro-Kann, Tartakower (fantasy) variation | 110 | 40.9% | 55.9% | 0.07 MB |
| B12 | Caro-Kann, advance variation | 731 | 33.1% | 56.4% | 0.45 MB |
| B12 | Caro-Kann, advance, Short variation | 4 | 50.0% | 75.0% | 0.00 MB |
| B12 | de Bruycker defence | 3 | 0.0% | 66.7% | 0.00 MB |
| B13 | Caro-Kann, Panov-Botvinnik attack | 70 | 51.4% | 48.6% | 0.05 MB |
| B13 | Caro-Kann, Panov-Botvinnik, Czerniak variation | 3 | 33.3% | 16.7% | 0.00 MB |
| B13 | Caro-Kann, Panov-Botvinnik, Gunderam attack | 2 | 0.0% | 50.0% | 0.00 MB |
| B13 | Caro-Kann, Panov-Botvinnik, Herzog defence | 1 | 0.0% | 0.0% | 0.00 MB |
| B13 | Caro-Kann, Panov-Botvinnik, normal variation | 8 | 12.5% | 68.8% | 0.01 MB |
| B13 | Caro-Kann, exchange variation | 92 | 46.7% | 50.5% | 0.07 MB |
| B13 | Caro-Kann, exchange, Rubinstein variation | 14 | 28.6% | 35.7% | 0.01 MB |
| B14 | Caro-Kann, Panov-Botvinnik attack, 5...e6 | 342 | 42.4% | 56.0% | 0.22 MB |
| B14 | Caro-Kann, Panov-Botvinnik attack, 5...g6 | 40 | 47.5% | 51.3% | 0.03 MB |
| B15 | Caro-Kann defence | 41 | 31.7% | 47.6% | 0.03 MB |
| B15 | Caro-Kann, Alekhine gambit | 3 | 33.3% | 83.3% | 0.00 MB |
| B15 | Caro-Kann, Forgacs variation | 43 | 34.9% | 47.7% | 0.03 MB |
| B15 | Caro-Kann, Gurgenidze counter-attack | 2 | 0.0% | 50.0% | 0.00 MB |
| B15 | Caro-Kann, Gurgenidze system | 56 | 35.7% | 58.9% | 0.04 MB |
| B15 | Caro-Kann, Rasa-Studier gambit | 4 | 50.0% | 25.0% | 0.00 MB |
| B15 | Caro-Kann, Tartakower (Nimzovich) variation | 22 | 36.4% | 59.1% | 0.02 MB |
| B16 | Caro-Kann, Bronstein-Larsen variation | 22 | 22.7% | 65.9% | 0.02 MB |
| B17 | Caro-Kann, Steinitz variation | 431 | 35.7% | 54.3% | 0.28 MB |
| B18 | Caro-Kann, classical variation | 73 | 46.6% | 50.7% | 0.06 MB |
| B18 | Caro-Kann, classical, 6.h4 | 64 | 32.8% | 55.5% | 0.05 MB |
| B18 | Caro-Kann, classical, Flohr variation | 2 | 0.0% | 50.0% | 0.00 MB |
| B18 | Caro-Kann, classical, Maroczy attack | 2 | 50.0% | 25.0% | 0.00 MB |
| B19 | Caro-Kann, classical, 7...Nd7 | 9 | 55.6% | 50.0% | 0.01 MB |
| B19 | Caro-Kann, classical, Spassky variation | 664 | 39.6% | 53.4% | 0.40 MB |
| B20 | Sicilian defence | 312 | 34.3% | 49.2% | 0.20 MB |
| B20 | Sicilian, Keres variation (2.Ne2) | 43 | 41.9% | 58.1% | 0.03 MB |
| B20 | Sicilian, Steinitz variation | 124 | 45.2% | 46.8% | 0.09 MB |
| B20 | Sicilian, wing gambit | 2 | 50.0% | 75.0% | 0.00 MB |
| B20 | Sicilian, wing gambit, Carlsbad variation | 2 | 0.0% | 50.0% | 0.00 MB |
| B21 | Sicilian, Grand Prix attack | 172 | 36.0% | 51.7% | 0.11 MB |
| B21 | Sicilian, Smith-Morra gambit | 19 | 52.6% | 57.9% | 0.02 MB |
| B22 | Sicilian, 2.c3, Heidenfeld variation | 2 | 50.0% | 75.0% | 0.00 MB |
| B22 | Sicilian, Alapin's variation (2.c3) | 715 | 38.5% | 53.6% | 0.48 MB |
| B23 | Sicilian, Grand Prix attack | 55 | 29.1% | 50.9% | 0.04 MB |
| B23 | Sicilian, Grand Prix attack, Schofman variation | 4 | 50.0% | 50.0% | 0.00 MB |
| B23 | Sicilian, chameleon variation | 43 | 39.5% | 61.6% | 0.03 MB |
| B23 | Sicilian, closed | 398 | 32.2% | 52.8% | 0.26 MB |
| B23 | Sicilian, closed, 2...Nc6 | 130 | 39.2% | 53.5% | 0.09 MB |
| B23 | Sicilian, closed, Korchnoi variation | 5 | 40.0% | 40.0% | 0.01 MB |
| B24 | Sicilian, closed | 40 | 37.5% | 48.8% | 0.03 MB |
| B25 | Sicilian, closed | 20 | 35.0% | 67.5% | 0.02 MB |
| B25 | Sicilian, closed, 6.Ne2 e5 (Botvinnik) | 8 | 50.0% | 50.0% | 0.01 MB |
| B25 | Sicilian, closed, 6.f4 | 35 | 28.6% | 48.6% | 0.03 MB |
| B25 | Sicilian, closed, 6.f4 e5 (Botvinnik) | 4 | 50.0% | 75.0% | 0.01 MB |
| B26 | Sicilian, closed, 6.Be3 | 49 | 32.7% | 42.9% | 0.03 MB |
| B27 | Sicilian defence | 2 | 50.0% | 75.0% | 0.00 MB |
| B27 | Sicilian, Hungarian variation | 158 | 34.2% | 57.0% | 0.11 MB |
| B27 | Sicilian, Katalimov variation | 4 | 75.0% | 37.5% | 0.00 MB |
| B27 | Sicilian, Quinteros variation | 4 | 25.0% | 87.5% | 0.00 MB |
| B28 | Sicilian, O'Kelly variation | 11 | 54.5% | 63.6% | 0.01 MB |
| B29 | Sicilian, Nimzovich-Rubinstein variation | 12 | 33.3% | 66.7% | 0.01 MB |
| B29 | Sicilian, Nimzovich-Rubinstein; Rubinstein counter-gambit | 12 | 16.7% | 41.7% | 0.01 MB |
| B30 | Sicilian defence | 304 | 38.5% | 50.5% | 0.23 MB |
| B30 | Sicilian, Nimzovich-Rossolimo attack (without ...d6) | 378 | 35.2% | 53.3% | 0.26 MB |
| B31 | Sicilian, Nimzovich-Rossolimo attack (with ...g6, without ...d6) | 315 | 36.2% | 55.9% | 0.22 MB |