CCRL 40/4
Downloads and Statistics
July 17, 2019
Testing summary:
Total: 2'068'038 games
played by 2'396 programs
27793 CPU days (X2 4600+)

White wins: 803'434 (38.9%)
Black wins: 650'049 (31.4%)
Draws: 614'555 (29.7%)
White score: 53.7%

Engine Details

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Rybka 2.1 64-bit in CCRL 40/4, 2019-07-17
Ponder off, General book (up to 12 moves), 3-4-5 piece EGTB
Time control: Equivalent to 40 moves in 4 minutes on Athlon 64 X2 4600+ (2.4 GHz), about 1.5 minutes on a modern Intel CPU.
Tested by CCRL team, 2005-2019, http://computerchess.org.uk/ccrl/404/

CCRL 40/4 main list:
Rybka 2.1 64-bit has no rank with rating of 2912 Elo points (+25 -24),
based on 664 games: 415 wins, 65 losses and 184 draws
Score: 76.4%, Average opponent: −191.0, Draws: 27.7%


Pairwise results:
     Opponent                         Elo     Score                  LOS   Perf
 - Toga II 1.3.1                      2772  43.5-15.5  (+33-5 =21)  100.0   +18
 - Toga II 1.2.1a 32-bit              2762  49.0-11.0  (+40-2 =18)  100.0   +76
 - Naum 2.1 64-bit                    2760  48.0-16.0  (+35-3 =26)  100.0    +9
 - Hiarcs X50                         2756  42.0-17.0  (+32-7 =20)  100.0   -13
 - Fritz 9                            2750  42.5-17.5  (+36-11=13)  100.0    -4
 - Spike 1.2 Turin                    2731  47.0-13.0  (+38-4 =18)  100.0   +17
 - Hiarcs X54 64-bit                  2714  42.0-17.0  (+35-10=14)  100.0   -45
 - Chess Tiger 2007                   2700  48.0-15.0  (+43-10=10)  100.0    -5
 - Naum 2.0 64-bit                    2693  44.0-16.0  (+34-6 =20)  100.0   -62
 - Glaurung 1.2.1 64-bit              2655  49.0-11.0  (+43-5 =12)  100.0    -9
 - CM10th Xperience                   2638  52.0-8.0   (+46-2 =12)  100.0   +18


Created in 2005-2013 by CCRL team
Last games added on July 17, 2019