CCRL 40/4
Downloads and Statistics
February 9, 2010
|
Testing summary:
Total: 525'069 gamesplayed by 783 programs 8151 CPU days (X2 4600+) White wins: 202'662 (38.6%) Black wins: 160'091 (30.5%) Draws: 162'316 (30.9%) White score: 54.1% |
CCRL 40/4
Downloads and Statistics
February 9, 2010
|
Testing summary:
Total: 525'069 gamesplayed by 783 programs 8151 CPU days (X2 4600+) White wins: 202'662 (38.6%) Black wins: 160'091 (30.5%) Draws: 162'316 (30.9%) White score: 54.1% |
This page shows how many games in our database were played from various openings classified by the Encyclopedia of Chess Openings. The table also shows average draw percentage and white score we observed in our games.
| ECO | Number of games | Draws | White score | |
| A00 | Irregular Openings | 821 | 30.3% | 50.0% |
| A01 | Nimzovich-Larsen attack | 193 | 34.7% | 51.0% |
| A02 | Bird's Opening | 8 | 12.5% | 81.3% |
| A03 | Bird's Opening | 15 | 53.3% | 46.7% |
| A04 | Reti Opening | 2995 | 30.0% | 54.0% |
| A05 | Reti Opening, 2..Nf6 | 2706 | 33.0% | 53.6% |
| A06 | Reti Opening, 2..d5 | 1178 | 29.4% | 55.6% |
| A07 | Reti Opening, King's Indian attack (Barcza system) | 3939 | 32.2% | 52.4% |
| A08 | Reti Opening, King's Indian attack | 731 | 33.9% | 53.6% |
| A09 | Reti Opening, 2..d5 3.c4 | 554 | 30.1% | 51.7% |
| A10 | English Opening | 1230 | 31.3% | 54.8% |
| A11 | English, Caro-Kann defensive system | 316 | 31.0% | 52.8% |
| A12 | English, Caro-Kann defensive system | 152 | 31.6% | 53.9% |
| A13 | English Opening | 2608 | 32.8% | 53.3% |
| A14 | English, Neo-Catalan declined | 666 | 36.0% | 54.2% |
| A15 | English, 1...Nf6 (Anglo-Indian defense) | 3395 | 32.2% | 55.5% |
| A16 | English Opening | 303 | 34.0% | 55.3% |
| A17 | English Opening | 632 | 32.1% | 53.9% |
| A18 | English, Mikenas-Carls variation | 29 | 24.1% | 67.2% |
| A19 | English, Mikenas-Carls, Sicilian variation | 59 | 25.4% | 55.1% |
| A20 | English Opening | 3029 | 32.2% | 54.9% |
| A21 | English Opening | 1198 | 29.5% | 52.0% |
| A22 | English Opening | 1515 | 33.8% | 50.6% |
| A23 | English Opening, Bremen system, Keres variation | 115 | 35.7% | 53.5% |
| A24 | English Opening, Bremen system with 3...g6 | 15 | 0.0% | 66.7% |
| A25 | English Opening, Sicilian Reversed | 1289 | 30.3% | 54.6% |
| A26 | English Opening, Closed system | 327 | 29.4% | 55.7% |
| A27 | English Opening, Three knights system | 129 | 31.8% | 56.2% |
| A28 | English Opening, Four knights system | 1741 | 35.2% | 53.2% |
| A29 | English Opening, Four knights, kingside Fianchetto | 5719 | 30.8% | 51.3% |
| A30 | English Opening, Symmetrical variation | 4747 | 32.1% | 54.6% |
| A31 | English Opening, Symmetrical, Benoni formation | 620 | 30.3% | 54.8% |
| A32 | English Opening, Symmetrical | 126 | 29.4% | 52.0% |
| A33 | English Opening, Symmetrical | 1265 | 31.5% | 53.0% |
| A34 | English Opening, Symmetrical | 1063 | 33.3% | 53.2% |
| A35 | English Opening, Symmetrical | 1380 | 30.7% | 54.3% |
| A36 | English Opening, Symmetrical | 474 | 30.0% | 53.6% |
| A37 | English Opening, Symmetrical | 417 | 28.1% | 54.8% |
| A38 | English Opening, Symmetrical | 295 | 33.9% | 52.5% |
| A39 | English Opening, Symmetrical, Main line with d4 | 201 | 29.9% | 53.2% |
| A40 | Queen's pawn | 3593 | 31.5% | 55.4% |
| A41 | Queen's pawn | 1845 | 30.8% | 56.4% |
| A42 | Modern defense, Averbakh system | 1075 | 28.8% | 60.7% |
| A43 | Old Benoni defense | 642 | 31.2% | 58.7% |
| A44 | Old Benoni defence | 13 | 46.2% | 38.5% |
| A45 | Queen's pawn game | 2248 | 28.5% | 51.8% |
| A46 | Queen's pawn game | 2267 | 29.6% | 55.8% |
| A47 | Queen's Indian defense | 349 | 28.7% | 52.4% |
| A48 | King's Indian, East Indian defense | 1313 | 32.0% | 51.0% |
| A49 | King's Indian, Fianchetto without c4 | 585 | 29.4% | 52.6% |
| A50 | Queen's pawn game | 749 | 28.3% | 51.7% |
| A51 | Budapest defense declined | 3 | 0.0% | 66.7% |
| A52 | Budapest defense | 23 | 30.4% | 71.7% |
| A53 | Old Indian defense | 544 | 30.3% | 59.1% |
| A54 | Old Indian, Ukrainian variation | 105 | 23.8% | 57.6% |
| A55 | Old Indian, Main line | 288 | 31.3% | 61.1% |
| A56 | Benoni defense | 1337 | 24.9% | 60.5% |
| A57 | Benko gambit | 978 | 29.1% | 57.5% |
| A58 | Benko gambit accepted | 838 | 28.0% | 58.2% |
| A59 | Benko gambit, 7.e4 | 406 | 33.5% | 58.4% |
| A60 | Benoni defense | 90 | 33.3% | 57.8% |
| A61 | Benoni defense | 800 | 26.9% | 61.1% |
| A62 | Benoni, Fianchetto variation | 226 | 26.5% | 59.3% |
| A63 | Benoni, Fianchetto variation, 9...Nbd7 | 35 | 34.3% | 62.9% |
| A64 | Benoni, Fianchetto variation, 11...Re8 | 139 | 25.2% | 56.5% |
| A65 | Benoni, 6.e4 | 42 | 26.2% | 51.2% |
| A66 | Benoni, pawn storm variation | 5 | 40.0% | 60.0% |
| A67 | Benoni, Taimanov variation | 32 | 28.1% | 57.8% |
| A68 | Benoni, Four pawns attack | 2 | 0.0% | 50.0% |
| A69 | Benoni, Four pawns attack, Main line | 48 | 35.4% | 34.4% |
| A70 | Benoni, Classical with e4 and Nf3 | 574 | 29.8% | 60.0% |
| A71 | Benoni, Classical, 8.Bg5 | 85 | 25.9% | 58.8% |
| A72 | Benoni, Classical without 9.O-O | 67 | 28.4% | 61.9% |
| A73 | Benoni, Classical, 9.O-O | 25 | 32.0% | 48.0% |
| A74 | Benoni, Classical, 9...a6, 10.a4 | 6 | 16.7% | 91.7% |
| A75 | Benoni, Classical with ...a6 and 10...Bg4 | 57 | 29.8% | 53.5% |
| A76 | Benoni, Classical, 9...Re8 | 29 | 20.7% | 62.1% |
| A77 | Benoni, Classical, 9...Re8, 10.Nd2 | 191 | 25.7% | 49.0% |
| A78 | Benoni, Classical with ...Re8 and ...Na6 | 43 | 34.9% | 54.7% |
| A79 | Benoni, Classical, 11.f3 | 153 | 23.5% | 66.7% |
| A80 | Dutch | 1707 | 30.8% | 54.0% |
| A81 | Dutch defense | 2677 | 31.2% | 58.7% |
| A82 | Dutch, Staunton gambit | 14 | 35.7% | 53.6% |
| A83 | Dutch, Staunton gambit, Staunton's line | 62 | 37.1% | 57.3% |
| A84 | Dutch defense | 781 | 29.2% | 59.0% |
| A85 | Dutch with 2.c4 & 3.Nc3 | 114 | 38.6% | 56.1% |
| A86 | Dutch with 2.c4 & 3.g3 | 60 | 31.7% | 55.8% |
| A87 | Dutch, Leningrad, Main variation | 386 | 28.5% | 58.5% |
| A88 | Dutch, Leningrad, Main variation with 7...c6 | 619 | 36.0% | 58.2% |
| A89 | Dutch, Leningrad, Main variation with Nc6 | 494 | 28.7% | 59.7% |
| A90 | Dutch defense | 994 | 27.2% | 57.8% |
| A91 | Dutch defense | 53 | 22.6% | 60.4% |
| A92 | Dutch defense | 130 | 33.8% | 60.0% |
| A93 | Dutch, Stonewall, Botwinnik variation | 113 | 24.8% | 58.4% |
| A94 | Dutch, Stonewall with Ba3 | 69 | 37.7% | 55.1% |
| A95 | Dutch, Stonewall with Nc3 | 179 | 29.1% | 53.6% |
| A96 | Dutch, Classical variation | 173 | 28.3% | 63.9% |
| A97 | Dutch, Ilyin-Genevsky variation | 91 | 41.8% | 62.6% |
| A98 | Dutch, Ilyin-Genevsky variation with Qc2 | 60 | 31.7% | 67.5% |
| A99 | Dutch, Ilyin-Genevsky variation with b3 | 174 | 30.5% | 65.2% |
| B00 | King's pawn Opening | 588 | 26.2% | 61.4% |
| B01 | Scandinavian (centercounter) center defense | 1604 | 30.7% | 60.3% |
| B02 | Alekhine's defense | 154 | 31.8% | 54.9% |
| B03 | Alekhine's defense | 615 | 26.5% | 56.2% |
| B04 | Alekhine's defense, Modern variation | 709 | 32.0% | 61.1% |
| B05 | Alekhine's defense, Modern variation, 4...Bg4 | 243 | 32.9% | 63.0% |
| B06 | Robatsch (Modern) defense | 6604 | 31.9% | 58.0% |
| B07 | Pirc defense | 1514 | 31.0% | 56.0% |
| B08 | Pirc, Classical (Two knights) system | 1367 | 34.2% | 56.8% |
| B09 | Pirc, Austrian attack | 1642 | 35.8% | 59.7% |
| B10 | Caro-Kann defense | 2176 | 31.5% | 53.7% |
| B11 | Caro-Kann, Two knights, 3...Bg4 | 162 | 33.3% | 53.1% |
| B12 | Caro-Kann defense | 3456 | 28.4% | 55.2% |
| B13 | Caro-Kann, Exchange variation | 691 | 31.4% | 53.8% |
| B14 | Caro-Kann, Panov-Botvinnik attack, 5...e6 | 1326 | 35.5% | 55.3% |
| B15 | Caro-Kann defense | 356 | 31.2% | 51.5% |
| B16 | Caro-Kann, Bronstein-Larsen variation | 113 | 23.0% | 69.9% |
| B17 | Caro-Kann, Steinitz variation | 2338 | 29.9% | 53.1% |
| B18 | Caro-Kann, Classical variation | 640 | 29.1% | 55.2% |
| B19 | Caro-Kann, Classical, 7...Nd7 | 3265 | 29.2% | 57.1% |
| B20 | Sicilian defense | 1130 | 27.5% | 49.5% |
| B21 | Sicilian, Grand Prix attack | 348 | 32.8% | 52.3% |
| B22 | Sicilian, Alapin's variation (2.c3) | 3283 | 36.7% | 53.1% |
| B23 | Sicilian, Closed | 1723 | 29.7% | 52.3% |
| B24 | Sicilian, Closed | 173 | 26.0% | 48.3% |
| B25 | Sicilian, Closed | 314 | 25.2% | 49.5% |
| B26 | Sicilian, Closed, 6.Be3 | 259 | 24.7% | 45.9% |
| B27 | Sicilian defense | 9536 | 34.7% | 57.3% |
| B28 | Sicilian, O'Kelly variation | 85 | 38.8% | 52.4% |
| B29 | Sicilian, Nimzovich-Rubinstein variation | 71 | 23.9% | 59.9% |
| B30 | Sicilian defense | 3162 | 30.3% | 53.5% |
| B31 | Sicilian, Nimzovich-Rossolimo attack (with ...g6, without ...d6) | 1961 | 31.3% | 53.5% |
| B32 | Sicilian defense | 1224 | 33.7% | 53.9% |
| B33 | Sicilian defense | 6290 | 28.5% | 54.1% |
| B34 | Sicilian, Accelerated Fianchetto, Exchange variation | 289 | 38.8% | 53.3% |
| B35 | Sicilian, Accelerated Fianchetto, Modern variation with Bc4 | 2494 | 37.0% | 52.7% |
| B36 | Sicilian, Accelerated Fianchetto, Maroczy bind | 1038 | 40.1% | 56.8% |
| B37 | Sicilian, Accelerated Fianchetto, Maroczy bind, 5...Bg7 | 201 | 38.3% | 54.0% |
| B38 | Sicilian, Accelerated Fianchetto, Maroczy bind, 6.Be3 | 2426 | 41.8% | 55.5% |
| B39 | Sicilian, Accelerated Fianchetto, Breyer variation | 1276 | 32.8% | 62.6% |
| B40 | Sicilian defense | 3353 | 32.4% | 53.0% |
| B41 | Sicilian, Kan variation | 307 | 30.9% | 51.0% |
| B42 | Sicilian, Kan, 5.Bd3 | 5585 | 29.1% | 55.8% |
| B43 | Sicilian, Kan, 5.Nc3 | 2771 | 31.4% | 52.9% |
| B44 | Sicilian defense | 1036 | 32.2% | 49.3% |
| B45 | Sicilian, Taimanov variation | 1108 | 30.1% | 55.8% |
| B46 | Sicilian, Taimanov variation | 2898 | 31.8% | 55.1% |
| B47 | Sicilian, Taimanov (Bastrikov) variation | 6627 | 31.9% | 54.2% |
| B48 | Sicilian, Taimanov variation | 2592 | 30.5% | 50.5% |
| B49 | Sicilian, Taimanov variation | 735 | 34.1% | 53.8% |
| B50 | Sicilian | 1291 | 30.2% | 52.4% |
| B51 | Sicilian, Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack | 772 | 33.8% | 53.8% |
| B52 | Sicilian, Canal-Sokolsky attack, 3...Bd7 | 998 | 36.5% | 52.3% |
| B53 | Sicilian, Chekhover variation | 277 | 36.8% | 48.7% |
| B54 | Sicilian | 797 | 31.0% | 54.8% |
| B55 | Sicilian, Prins variation, Venice attack | 26 | 26.9% | 55.8% |
| B56 | Sicilian | 1308 | 28.9% | 53.2% |
| B57 | Sicilian, Sozin (not Scheveningen) | 2071 | 33.0% | 50.1% |
| B58 | Sicilian, Classical | 778 | 33.4% | 49.7% |
| B59 | Sicilian, Boleslavsky variation, 7.Nb3 | 73 | 41.1% | 52.1% |
| B60 | Sicilian, Richter-Rauzer | 309 | 28.2% | 53.6% |
| B61 | Sicilian, Richter-Rauzer, Larsen variation, 7.Qd2 | 310 | 29.7% | 60.6% |
| B62 | Sicilian, Richter-Rauzer, 6...e6 | 145 | 20.7% | 46.2% |
| B63 | Sicilian, Richter-Rauzer, Rauzer attack | 1084 | 26.2% | 53.0% |
| B64 | Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defense, 9.f4 | 664 | 30.4% | 54.4% |
| B65 | Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defense, 9...Nxd4 | 1059 | 32.5% | 54.5% |
| B66 | Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 | 12481 | 26.0% | 50.6% |
| B67 | Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defense, 8...Bd7 | 5543 | 25.5% | 52.5% |
| B68 | Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defense, 9...Be7 | 150 | 28.0% | 47.3% |
| B69 | Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defense, 11.Bxf6 | 708 | 22.7% | 56.4% |
| B70 | Sicilian, Dragon variation | 295 | 30.2% | 47.3% |
| B71 | Sicilian, Dragon, Levenfish variation | 20 | 45.0% | 47.5% |
| B72 | Sicilian, Dragon, 6.Be3 | 67 | 23.9% | 50.7% |
| B73 | Sicilian, Dragon, Classical, 8.O-O | 167 | 36.5% | 53.0% |
| B74 | Sicilian, Dragon, Classical, 9.Nb3 | 376 | 33.5% | 54.8% |
| B75 | Sicilian, Dragon, Yugoslav attack | 108 | 34.3% | 59.7% |
| B76 | Sicilian, Dragon, Yugoslav attack, 7...O-O | 971 | 27.2% | 53.3% |
| B77 | Sicilian, Dragon, Yugoslav attack, 9.Bc4 | 445 | 24.7% | 55.5% |
| B78 | Sicilian, Dragon, Yugoslav attack, 10.O-O-O | 669 | 24.4% | 52.4% |
| B79 | Sicilian, Dragon, Yugoslav attack, 12.h4 | 136 | 28.7% | 65.8% |
| B80 | Sicilian, Scheveningen variation | 1469 | 25.9% | 53.6% |
| B81 | Sicilian, Scheveningen, Keres attack | 3369 | 26.2% | 58.9% |
| B82 | Sicilian, Scheveningen, 6.f4 | 651 | 28.1% | 54.1% |
| B83 | Sicilian, Scheveningen, 6.Be2 | 1444 | 32.1% | 50.4% |
| B84 | Sicilian, Scheveningen (Paulsen), Classical variation | 4801 | 29.5% | 52.0% |
| B85 | Sicilian, Scheveningen, Classical variation with ...Qc7 and ...Nc6 | 763 | 37.5% | 52.9% |
| B86 | Sicilian, Sozin attack | 98 | 21.4% | 45.4% |
| B87 | Sozin with ...a6 and ...b5 | 1213 | 29.4% | 49.8% |
| B88 | Sicilian, Sozin, Leonhardt variation | 298 | 34.2% | 52.0% |
| B89 | Sicilian, Sozin, 7.Be3 | 2572 | 25.6% | 50.2% |
| B90 | Sicilian, Najdorf | 18018 | 24.1% | 52.8% |
| B91 | Sicilian, Najdorf, Zagreb (Fianchetto) variation | 329 | 28.0% | 53.2% |
| B92 | Sicilian, Najdorf, Zagreb (Fianchetto) variation | 4354 | 31.9% | 52.7% |
| B93 | Sicilian, Najdorf, 6.f4 | 1641 | 31.0% | 50.2% |
| B94 | Sicilian, Najdorf, 6.Bg5 | 121 | 25.6% | 43.4% |
| B95 | Sicilian, Najdorf, 6...e6 | 166 | 28.3% | 47.9% |
| B96 | Sicilian, Najdorf, 7.f4 | 419 | 30.1% | 52.0% |
| B97 | Sicilian, Najdorf, 7...Qb6 | 3304 | 30.5% | 45.7% |
| B98 | Sicilian, Najdorf, 7...Be7 | 168 | 31.0% | 53.0% |
| B99 | Sicilian, Najdorf, 7...Be7 Main line | 1981 | 20.3% | 55.3% |
| C00 | French defense | 4110 | 32.7% | 52.3% |
| C01 | French, Exchange variation | 714 | 34.2% | 54.5% |
| C02 | French, Advance variation | 2389 | 24.4% | 52.7% |
| C03 | French, Tarrasch | 793 | 35.3% | 55.5% |
| C04 | French, Tarrasch, Guimard Main line | 112 | 18.8% | 56.7% |
| C05 | French, Tarrasch, Closed variation | 878 | 26.1% | 58.5% |
| C06 | French, Tarrasch, Closed variation, Main line | 1853 | 32.5% | 56.6% |
| C07 | French, Tarrasch, Open variation | 2096 | 36.9% | 52.0% |
| C08 | French, Tarrasch, Open, 4.exd5 exd5 | 1115 | 37.0% | 52.8% |
| C09 | French, Tarrasch, Open variation, Main line | 1503 | 38.1% | 56.1% |
| C10 | French, Paulsen variation | 1190 | 29.9% | 55.0% |
| C11 | French defense | 5867 | 29.6% | 53.2% |
| C12 | French, MacCutcheon variation | 755 | 26.5% | 52.7% |
| C13 | French, Classical | 116 | 33.6% | 60.8% |
| C14 | French, Classical variation | 450 | 28.4% | 58.7% |
| C15 | French, Winawer (Nimzovich) variation | 596 | 32.0% | 56.3% |
| C16 | French, Winawer, Advance variation | 416 | 20.7% | 53.8% |
| C17 | French, Winawer, Advance variation | 475 | 26.7% | 56.3% |
| C18 | French, Winawer, Advance variation | 387 | 25.1% | 61.1% |
| C19 | French, Winawer, Advance, 6...Ne7 | 6206 | 25.7% | 59.0% |
| C20 | King's pawn game | 8 | 37.5% | 31.3% |
| C21 | center game | 166 | 47.0% | 65.7% |
| C22 | center game | 169 | 18.9% | 63.9% |
| C23 | Bishop's Opening | 98 | 31.6% | 59.7% |
| C24 | Bishop's Opening, Berlin defense | 193 | 34.2% | 58.0% |
| C25 | Vienna game | 288 | 34.0% | 47.2% |
| C26 | Vienna, Falkbeer variation | 125 | 33.6% | 55.2% |
| C27 | Vienna game | 24 | 41.7% | 37.5% |
| C28 | Vienna game | 71 | 28.2% | 49.3% |
| C29 | Vienna gambit, Kaufmann variation | 33 | 21.2% | 59.1% |
| C30 | King's gambit | 38 | 15.8% | 50.0% |
| C31 | KGD, Falkbeer counter-gambit | 9 | 11.1% | 50.0% |
| C32 | KGD, Falkbeer, 5. dxe4 | 4 | 25.0% | 37.5% |
| C33 | King's gambit accepted | 30 | 23.3% | 38.3% |
| C34 | King's knight's gambit | 58 | 25.9% | 50.9% |
| C35 | KGA, Cunningham defense | 7 | 42.9% | 35.7% |
| C36 | KGA, Abbazia defense (Classical defense, Modern defense) | 23 | 39.1% | 58.7% |
| C37 | KGA, Quaade gambit | 1 | 0.0% | 0.0% |
| C38 | King's knight's gambit | 4 | 25.0% | 37.5% |
| C39 | King's knight's gambit | 41 | 24.4% | 29.3% |
| C40 | King's knight Opening | 127 | 20.5% | 66.1% |
| C41 | Philidor's defense | 582 | 34.7% | 54.5% |
| C42 | Petrov's defense | 4384 | 31.8% | 55.3% |
| C43 | Petrov, Modern (Steinitz) attack | 792 | 31.6% | 53.7% |
| C44 | King's pawn game | 292 | 29.1% | 50.5% |
| C45 | Scotch game | 1192 | 34.1% | 52.0% |
| C46 | Three knights game | 392 | 31.4% | 50.1% |
| C47 | Four knights, Scotch variation | 435 | 36.8% | 47.8% |
| C48 | Four knights, Spanish variation | 703 | 31.0% | 54.2% |
| C49 | Four knights, double Ruy Lopez | 638 | 35.0% | 53.4% |
| C50 | King's pawn game | 912 | 30.8% | 56.5% |
| C51 | Evans gambit declined | 100 | 26.0% | 43.0% |
| C52 | Evans gambit | 32 | 25.0% | 40.6% |
| C53 | Giuoco piano | 719 | 29.9% | 52.8% |
| C54 | Guioco piano | 12 | 50.0% | 41.7% |
| C55 | Two knights defense | 537 | 29.1% | 53.8% |
| C56 | Two knights defense | 23 | 39.1% | 54.3% |
| C57 | Two knights defense | 71 | 32.4% | 55.6% |
| C58 | Two knights defense | 39 | 38.5% | 57.7% |
| C59 | Two knights defense | 59 | 28.8% | 48.3% |
| C60 | Ruy Lopez | 135 | 31.1% | 55.6% |
| C61 | Ruy Lopez, Bird's defense | 24 | 33.3% | 62.5% |
| C62 | Ruy Lopez, Old Steinitz defence | 392 | 31.1% | 54.8% |
| C63 | Ruy Lopez, Schilemann defense | 89 | 33.7% | 53.9% |
| C64 | Ruy Lopez, Classical (Cordel) defence | 548 | 28.5% | 52.0% |
| C65 | Ruy Lopez, Berlin defense | 638 | 36.7% | 51.1% |
| C66 | Ruy Lopez, Berlin defence, 4.O-O, d6 | 161 | 36.6% | 53.1% |
| C67 | Ruy Lopez, Berlin defence, Open variation | 1257 | 39.4% | 52.7% |
| C68 | Ruy Lopez, Exchange variation | 139 | 37.4% | 51.1% |
| C69 | Ruy Lopez, Exchange variation, 5.O-O | 654 | 35.6% | 54.4% |
| C70 | Ruy Lopez, | 391 | 28.1% | 50.4% |
| C71 | Ruy Lopez, Modern Steinitz defense | 187 | 33.7% | 54.8% |
| C72 | Ruy Lopez, Modern Steinitz defense 5.0-0 | 243 | 30.9% | 58.2% |
| C73 | Ruy Lopez, Modern Steinitz defense, Richter variation | 170 | 31.2% | 50.3% |
| C74 | Ruy Lopez, Modern Steinitz defense | 92 | 29.3% | 49.5% |
| C75 | Ruy Lopez, Modern Steinitz defense | 147 | 29.9% | 56.5% |
| C76 | Ruy Lopez, Modern Steinitz defense, Fianchetto (Bronstein) variation | 163 | 31.3% | 48.8% |
| C77 | Ruy Lopez, Morphy defence | 1124 | 31.9% | 52.2% |
| C78 | Ruy Lopez, 5.O-O | 1515 | 30.6% | 54.2% |
| C79 | Ruy Lopez, Steinitz defense deferred (Russian defence) | 136 | 27.2% | 52.6% |
| C80 | Ruy Lopez, Open (Tarrasch) defence | 977 | 35.0% | 54.5% |
| C81 | Ruy Lopez, Open, Howell attack | 53 | 41.5% | 64.2% |
| C82 | Ruy Lopez, Open, 9.c3 | 235 | 34.5% | 61.9% |
| C83 | Ruy Lopez, Open, Classical defence | 94 | 40.4% | 61.7% |
| C84 | Ruy Lopez, Closed defense | 484 | 34.9% | 51.5% |
| C85 | Ruy Lopez, Exchange variation doubly deferred (DERLD) | 452 | 35.6% | 51.9% |
| C86 | Worrall attack | 207 | 34.3% | 53.4% |
| C87 | Ruy Lopez, Closed, Averbach variation | 132 | 30.3% | 59.8% |
| C88 | Ruy Lopez, Closed | 1686 | 30.2% | 52.3% |
| C89 | Ruy Lopez, Marshall counter-attack | 342 | 35.1% | 47.4% |
| C90 | Ruy Lopez, closed (with ...d6) | 3282 | 26.3% | 51.3% |
| C91 | Ruy Lopez, closed, 9.d4 | 5128 | 29.2% | 52.5% |
| C92 | Ruy Lopez, closed, 9.d4 | 3230 | 32.7% | 53.8% |
| C93 | Ruy Lopez, closed, Smyslov defense | 175 | 34.9% | 62.0% |
| C94 | Ruy Lopez, Closed, Breyer defense | 52 | 44.2% | 60.6% |
| C95 | Ruy Lopez, closed, Breyer, 10.d4 | 1750 | 30.2% | 57.5% |
| C96 | Ruy Lopez, closed, 8...Na5 | 904 | 32.3% | 59.7% |
| C97 | Ruy Lopez, Closed, Chigorin defense | 814 | 23.6% | 61.1% |
| C98 | Ruy Lopez, Closed, Chigorin, 12...Nc6 | 239 | 22.6% | 61.1% |
| C99 | Ruy Lopez, Closed, Chigorin, 12...c5d4 | 2759 | 36.2% | 59.2% |
| D00 | Queen's pawn game | 1070 | 28.1% | 53.5% |
| D01 | Richter-Veresov attack | 119 | 28.6% | 43.7% |
| D02 | Queen's pawn game, 2. Nf3 | 4026 | 30.7% | 52.2% |
| D03 | Torre attack, Tartakower variation | 168 | 31.5% | 50.9% |
| D04 | Queen's pawn game | 299 | 32.8% | 51.2% |
| D05 | Queen's pawn game, Zukertort variation | 338 | 28.1% | 56.7% |
| D06 | Queen's Gambit | 165 | 36.4% | 62.4% |
| D07 | QGD; Chigorin defense | 669 | 28.6% | 58.5% |
| D08 | QGD; Albin counter-gambit | 10 | 10.0% | 55.0% |
| D09 | QGD; Albin counter-gambit, 5.g3 | 9 | 44.4% | 55.6% |
| D10 | QGD; Slav defense | 1925 | 30.0% | 51.9% |
| D11 | QGD; Slav defense, 3.Nf3 | 1598 | 32.6% | 53.7% |
| D12 | QGD; Slav defense, 4.e3 Bf5 | 1398 | 32.5% | 55.3% |
| D13 | QGD; Slav defense, Exchange variation | 351 | 34.2% | 53.0% |
| D14 | QGD; Slav defense, Exchange variation | 205 | 33.2% | 53.2% |
| D15 | QGD; Slav accepted, Exchange variation, 6.Bf4 Bf5 | 1283 | 32.9% | 52.9% |
| D16 | QGD; Slav accepted, Alapin variation | 214 | 36.0% | 58.6% |
| D17 | QGD; Slav defense, Czech defence | 1042 | 32.4% | 57.6% |
| D18 | QGD; Dutch variation | 51 | 31.4% | 58.8% |
| D19 | QGD; Dutch variation | 1534 | 30.9% | 55.5% |
| D20 | Queen's Gambit accepted | 1629 | 32.0% | 54.1% |
| D21 | QGA, 3.Nf3 | 264 | 23.1% | 60.0% |
| D22 | QGA; Alekhine defense | 79 | 41.8% | 58.9% |
| D23 | Queen's gambit accepted | 261 | 33.7% | 47.1% |
| D24 | QGA, 4.Nc3 | 203 | 32.5% | 54.7% |
| D25 | QGA, 4.e3 | 410 | 28.0% | 56.2% |
| D26 | QGA; classical variation | 623 | 36.8% | 52.2% |
| D27 | QGA; classical variation | 2858 | 35.5% | 53.7% |
| D28 | QGA; Classical variation 7.Qe2 | 81 | 45.7% | 50.0% |
| D29 | QGA; Classical variation 8...Bb7 | 299 | 32.1% | 44.5% |
| D30 | QGD | 2829 | 31.5% | 54.3% |
| D31 | QGD, 3.Nc3 | 1554 | 30.0% | 52.1% |
| D32 | QGD; Tarrasch defense | 154 | 33.1% | 54.2% |
| D33 | QGD; Tarrasch, Schlechter-Rubinstein system | 58 | 41.4% | 55.2% |
| D34 | QGD; Tarrasch, 7...Be7 | 858 | 34.5% | 61.7% |
| D35 | QGD; 3...Nf6 | 1111 | 30.1% | 53.6% |
| D36 | QGD; Exchange, positional line, 6.Qc2 | 46 | 32.6% | 59.8% |
| D37 | QGD; 4.Nf3 | 4403 | 32.6% | 52.7% |
| D38 | QGD; Ragozin variation | 1775 | 33.0% | 53.6% |
| D39 | QGD; Ragozin, Vienna variation | 480 | 34.2% | 54.8% |
| D40 | QGD; Semi-Tarrasch defense | 414 | 34.5% | 49.9% |
| D41 | QGD; Semi-Tarrasch, 5.cd | 425 | 35.8% | 54.8% |
| D42 | QGD; Semi-Tarrasch, 7.Bd3 | 203 | 33.0% | 51.0% |
| D43 | QGD; Semi-Slav | 4273 | 31.6% | 51.5% |
| D44 | QGD; Semi-Slav 5.Bg5 dc | 1406 | 26.3% | 56.0% |
| D45 | QGD; Semi-Slav 5.e3 | 15462 | 32.1% | 51.5% |
| D46 | QGD; Semi-Slav 6.Bd3 | 247 | 32.0% | 56.1% |
| D47 | QGD; Semi-Slav 7.Bc4 | 12492 | 29.9% | 52.5% |
| D48 | QGD; Meran, 8...a6 | 2687 | 28.8% | 51.2% |
| D49 | QGD; Meran, 11. Nxb5 | 979 | 33.3% | 52.0% |
| D50 | QGD; 4.Bg5 | 50 | 28.0% | 50.0% |
| D51 | QGD; 4.Bg5 Nbd7 | 64 | 35.9% | 57.0% |
| D52 | QGD | 701 | 34.1% | 55.0% |
| D53 | QGD; 4.Bg5 Be7 | 85 | 31.8% | 64.1% |
| D54 | QGD; Anti-neo-Orthodox variation | 11 | 36.4% | 54.5% |
| D55 | QGD; 6.Nf3 | 576 | 43.1% | 54.3% |
| D56 | QGD; Lasker defense | 228 | 34.2% | 50.0% |
| D57 | QGD; Lasker defense, Main line | 20 | 35.0% | 57.5% |
| D58 | QGD; Tartakower (Makagonov-Bondarevsky) system | 6791 | 33.1% | 51.5% |
| D59 | QGD; Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd5 | 310 | 40.6% | 47.1% |
| D60 | QGD; Orthodox defense | 86 | 36.0% | 56.4% |
| D61 | QGD; Orthodox defense, Rubinstein variation | 155 | 31.0% | 54.8% |
| D62 | QGD; Orthodox defense, 7.Qc2 c5, 8.cd (Rubinstein) | 188 | 45.2% | 52.4% |
| D63 | QGD; Orthodox defense, 7.Rc1 | 453 | 34.0% | 53.9% |
| D64 | QGD; Orthodox defense, Rubinstein attack (with Rc1) | 133 | 44.4% | 50.0% |
| D65 | QGD; Orthodox defense, Rubinstein attack, Main line | 5 | 40.0% | 40.0% |
| D66 | QGD; Orthodox defense, Bd3 line | 97 | 44.3% | 57.2% |
| D67 | QGD; Orthodox defense, Bd3 line, Capablanca freeing manoever | 272 | 42.6% | 61.0% |
| D68 | QGD; Orthodox defense, Classical variation | 224 | 39.7% | 56.0% |
| D69 | QGD; Orthodox defense, Classical, 13.dxe5 | 17 | 64.7% | 50.0% |
| D70 | Neo-Gruenfeld defense | 74 | 29.7% | 60.8% |
| D71 | Neo-Gruenfeld, 5.cd | 86 | 45.3% | 52.9% |
| D72 | Neo-Gruenfeld, 5.cd, Main line | 30 | 30.0% | 51.7% |
| D73 | Neo-Gruenfeld, 5.Nf3 | 250 | 31.2% | 55.2% |
| D74 | Neo-Gruenfeld, 6.cd Nxd5, 7.O-O | 54 | 51.9% | 59.3% |
| D75 | Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc3 | 43 | 37.2% | 53.5% |
| D76 | Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb6 | 207 | 38.6% | 56.0% |
| D77 | Neo-Gruenfeld, 6.O-O | 280 | 38.9% | 52.7% |
| D78 | Neo-Gruenfeld, 6.O-O c6 | 286 | 34.6% | 55.1% |
| D79 | Neo-Gruenfeld, 6.O-O, Main line | 185 | 38.9% | 53.5% |
| D80 | Gruenfeld defense | 201 | 27.9% | 55.7% |
| D81 | Gruenfeld; Russian variation | 22 | 50.0% | 47.7% |
| D82 | Gruenfeld 4.Bf4 | 167 | 36.5% | 55.4% |
| D83 | Gruenfeld gambit | 47 | 31.9% | 50.0% |
| D84 | Gruenfeld gambit accepted | 23 | 34.8% | 73.9% |
| D85 | Gruenfeld, exchange variation | 3800 | 40.2% | 55.7% |
| D86 | Gruenfeld, Exchange, Classical variation | 485 | 37.1% | 55.3% |
| D87 | Gruenfeld, Exchange, Spassky variation | 382 | 34.6% | 58.4% |
| D88 | Gruenfeld, Spassky variation, Main line, 10...cd, 11.cd | 92 | 47.8% | 57.6% |
| D89 | Gruenfeld, Spassky variation, Main line, 13.Bd3 | 171 | 36.3% | 50.3% |
| D90 | Gruenfeld, Three knights variation | 171 | 35.1% | 54.4% |
| D91 | Gruenfeld, Three knights variation | 1367 | 34.2% | 47.2% |
| D92 | Gruenfeld, 5.Bf4 | 365 | 35.3% | 55.8% |
| D93 | Gruenfeld with 5. Bf4 O-O 6. e3 | 234 | 41.5% | 59.2% |
| D94 | Gruenfeld, 5.e3 | 596 | 37.2% | 56.4% |
| D95 | Gruenfeld with 5. e3 O-O 6. Qb3 | 91 | 37.4% | 41.8% |
| D96 | Gruenfeld, Russian variation | 93 | 40.9% | 53.8% |
| D97 | Gruenfeld, Russian variation with 7. e4 | 2462 | 31.4% | 51.9% |
| D98 | Gruenfeld, Russian, Smyslov variation | 181 | 34.8% | 58.3% |
| D99 | Gruenfeld defense, Smyslov, Main line | 252 | 34.1% | 60.3% |
| E00 | Queen's pawn game | 2257 | 31.6% | 54.3% |
| E01 | Catalan, closed | 206 | 37.9% | 54.4% |
| E02 | Catalan, open, 5.Qa4 | 23 | 39.1% | 54.3% |
| E03 | Catalan, open, Alekhine variation | 11 | 27.3% | 31.8% |
| E04 | Catalan, Open, 5.Nf3 | 3075 | 35.8% | 52.3% |
| E05 | Catalan, Open, Classical line | 105 | 37.1% | 50.0% |
| E06 | Catalan, Closed, 5.Nf3 | 1667 | 37.0% | 53.3% |
| E07 | Catalan, Closed, 6...Nbd7 | 65 | 20.0% | 56.2% |
| E08 | Catalan, Closed, 7.Qc2 | 192 | 33.9% | 56.5% |
| E09 | Catalan, Closed, Main line | 143 | 37.8% | 55.9% |
| E10 | Queen's pawn game 3. Nf3 | 2127 | 33.9% | 55.5% |
| E11 | Bogo-Indian defense | 3557 | 31.9% | 55.8% |
| E12 | Queen's Indian defense | 7759 | 31.9% | 52.4% |
| E13 | Queen's Indian, 4.Nc3, Main line | 166 | 33.1% | 55.1% |
| E14 | Queen's Indian, 4.e3 | 692 | 31.9% | 50.9% |
| E15 | Queen's Indian, 4.g3 | 17001 | 30.2% | 55.6% |
| E16 | Queen's Indian, Capablanca variation | 389 | 33.7% | 53.6% |
| E17 | Queen's Indian, 5.Bg2 Be7 | 894 | 32.1% | 56.8% |
| E18 | Queen's Indian, Old Main line, 7.Nc3 | 1066 | 34.6% | 56.6% |
| E19 | Queen's Indian, Old Main line, 9.Qxc3 | 738 | 34.7% | 53.9% |
| E20 | Nimzo-Indian defense | 591 | 31.5% | 50.4% |
| E21 | Nimzo-Indian, Three knights variation | 988 | 32.7% | 51.6% |
| E22 | Nimzo-Indian, Spielmann variation | 34 | 26.5% | 48.5% |
| E23 | Nimzo-Indian, Spielmann, 4...c5, 5.dc Nc6 | 16 | 37.5% | 62.5% |
| E24 | Nimzo-Indian, Saemisch variation | 45 | 20.0% | 56.7% |
| E25 | Nimzo-Indian, Saemisch variation, Keres variation | 202 | 32.2% | 52.2% |
| E26 | Nimzo-Indian, Saemisch variation, 4. a3 Bxc3+ 5. bxc3 c5 6. e3 | 29 | 17.2% | 46.6% |
| E27 | Nimzo-Indian, Saemisch variation, 5...0-0 | 8 | 37.5% | 31.3% |
| E28 | Nimzo-Indian, Saemisch variation, 6. e3 | 27 | 22.2% | 59.3% |
| E29 | Nimzo-Indian, Saemisch variation, Main line | 79 | 41.8% | 47.5% |
| E30 | Nimzo-Indian, Leningrad variation, | 211 | 27.0% | 49.5% |
| E31 | Nimzo-Indian, Leningrad variation, main line | 53 | 28.3% | 50.0% |
| E32 | Nimzo-Indian, Classical variation | 5864 | 36.5% | 51.9% |
| E33 | Nimzo-Indian, Classical variation, 4...Nc6 | 189 | 31.7% | 54.5% |
| E34 | Nimzo-Indian, Classical, Noa variation | 269 | 39.8% | 53.7% |
| E35 | Nimzo-Indian, Classical, Noa variation, 5. cxd5 exd5 | 216 | 35.2% | 52.3% |
| E36 | Nimzo-Indian, Classical, Noa variation, 5. a3 | 26 | 26.9% | 71.2% |
| E37 | Nimzo-Indian, Classical, Noa variation, Main line, 7.Qc2 | 75 | 36.0% | 60.7% |
| E38 | Nimzo-Indian, Classical, 4...c5 | 367 | 33.5% | 59.5% |
| E39 | Nimzo-Indian, Classical, Pirc variation | 847 | 35.3% | 57.2% |
| E40 | Nimzo-Indian, 4.e3 | 94 | 19.1% | 59.6% |
| E41 | Nimzo-Indian, 4.e3 c5 | 1185 | 30.5% | 49.0% |
| E42 | Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) | 1312 | 33.3% | 57.2% |
| E43 | Nimzo-Indian, Fischer variation | 286 | 31.1% | 54.0% |
| E44 | Nimzo-Indian, Fischer variation, 5.Ne2 | 356 | 28.9% | 52.9% |
| E45 | Nimzo-Indian, 4.e3, Bronstein (Byrne) variation | 300 | 36.7% | 54.0% |
| E46 | Nimzo-Indian, 4.e3 O-O | 556 | 29.1% | 50.2% |
| E47 | Nimzo-Indian, 4.e3 O-O, 5.Bd3 | 421 | 37.1% | 56.5% |
| E48 | Nimzo-Indian, 4.e3 O-O, 5.Bd3 d5 | 269 | 35.3% | 48.9% |
| E49 | Nimzo-Indian, 4.e3, Botvinnik system | 215 | 32.6% | 44.7% |
| E50 | Nimzo-Indian, 4.e3 e8g8, 5.Nf3, without ...d5 | 18 | 27.8% | 41.7% |
| E51 | Nimzo-Indian, 4.e3 e8g8, 5.Nf3 d7d5 | 54 | 40.7% | 59.3% |
| E52 | Nimzo-Indian, 4.e3, Main line with ...b6 | 169 | 29.6% | 59.2% |
| E53 | Nimzo-Indian, 4.e3, Main line with ...c5 | 786 | 37.3% | 52.4% |
| E54 | Nimzo-Indian, 4.e3, Gligoric system with 7...dc | 347 | 35.2% | 53.0% |
| E55 | Nimzo-Indian, 4.e3, Gligoric system, Bronstein variation | 1940 | 36.2% | 53.9% |
| E56 | Nimzo-Indian, 4.e3, Main line with 7...Nc6 | 74 | 35.1% | 47.3% |
| E58 | Nimzo-Indian, 4.e3, Main line with 8...Bxc3 | 1491 | 27.8% | 50.7% |
| E59 | Nimzo-Indian, 4.e3, Main line | 1671 | 30.9% | 54.2% |
| E60 | King's Indian defense | 2918 | 30.4% | 55.0% |
| E61 | King's Indian defense, 3.Nc3 | 541 | 25.3% | 55.9% |
| E62 | King's Indian, Fianchetto variation | 1222 | 32.2% | 59.1% |
| E63 | King's Indian, Fianchetto, Panno variation | 1980 | 31.4% | 57.4% |
| E64 | King's Indian, Fianchetto, Yugoslav system | 36 | 22.2% | 61.1% |
| E65 | King's Indian, Yugoslav, 7.O-O | 63 | 31.7% | 54.0% |
| E66 | King's Indian, Fianchetto, Yugoslav Panno | 198 | 29.8% | 55.8% |
| E67 | King's Indian, Fianchetto with ...Nd7 | 311 | 33.8% | 54.8% |
| E68 | King's Indian, Fianchetto, Classical variation, 8.e4 | 1263 | 31.4% | 57.0% |
| E69 | King's Indian, Fianchetto, Classical Main line | 1072 | 30.2% | 60.1% |
| E70 | King's Indian, 4.e4 | 497 | 30.8% | 54.6% |
| E71 | King's Indian, Makagonov system (5.h3) | 281 | 28.5% | 57.3% |
| E72 | King's Indian with e4 & g3 | 21 | 23.8% | 64.3% |
| E73 | King's Indian, 5.Be2 | 376 | 27.7% | 51.6% |
| E74 | King's Indian, Averbakh, 6...c5 | 52 | 25.0% | 60.6% |
| E75 | King's Indian, Averbakh, Main line | 20 | 15.0% | 47.5% |
| E76 | King's Indian, Four pawns attack | 141 | 27.0% | 53.2% |
| E77 | King's Indian, Four pawns attack, 6.Be2 | 184 | 30.4% | 50.5% |
| E78 | King's Indian, Four pawns attack, with Be2 and Nf3 | 4 | 50.0% | 50.0% |
| E79 | King's Indian, Four pawns attack, Main line | 89 | 43.8% | 55.6% |
| E80 | King's Indian, Saemisch variation | 58 | 25.9% | 62.9% |
| E81 | King's Indian, Saemisch, 5...O-O | 1221 | 26.4% | 54.2% |
| E82 | King's Indian, Saemisch, double Fianchetto variation | 55 | 25.5% | 52.7% |
| E83 | King's Indian, Saemisch, 6...Nc6 | 34 | 20.6% | 54.4% |
| E84 | King's Indian, Saemisch, Panno Main line | 531 | 28.6% | 55.9% |
| E85 | King's Indian, Saemisch, Orthodox variation | 14 | 28.6% | 57.1% |
| E86 | King's Indian, Saemisch, Orthodox, 7.Nge2 c6 | 277 | 24.9% | 53.6% |
| E87 | King's Indian, Saemisch, Orthodox, 7.d5 | 210 | 20.5% | 64.0% |
| E88 | King's Indian, Saemisch, Orthodox, 7.d5 c6 | 387 | 28.4% | 54.0% |
| E89 | King's Indian, Saemisch, Orthodox Main line | 27 | 18.5% | 57.4% |
| E90 | King's Indian, 5.Nf3 | 474 | 25.7% | 53.6% |
| E91 | King's Indian, 6.Be2 | 666 | 31.4% | 57.6% |
| E92 | King's Indian, Classical variation | 2403 | 27.8% | 54.8% |
| E93 | King's Indian, Petrosian system, Main line | 101 | 31.7% | 53.5% |
| E94 | King's Indian, Orthodox variation | 3208 | 29.1% | 57.0% |
| E95 | King's Indian, Orthodox, 7...Nbd7, 8.Re1 | 506 | 31.2% | 58.1% |
| E96 | King's Indian, Orthodox, 7...Nbd7, Main line | 232 | 33.2% | 56.7% |
| E97 | King's Indian, Orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation) | 6892 | 27.8% | 56.2% |
| E98 | King's Indian, Orthodox, Aronin-Taimanov, 9.Ne1 | 3474 | 21.1% | 58.0% |
| E99 | King's Indian, Orthodox, Aronin-Taimanov, Main line | 235 | 20.4% | 54.0% |
|
Created in 2005-2008 by CCRL team
Last games added on February 9, 2010 |