CCRL 40/4
Downloads and Statistics
August 24, 2019
Testing summary:
Total: 2'089'528 games
played by 2'430 programs
28120 CPU days (X2 4600+)

White wins: 811'498 (38.8%)
Black wins: 656'361 (31.4%)
Draws: 621'669 (29.8%)
White score: 53.7%

Engine Details

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Stockfish 1.8 64-bit 4CPU in CCRL 40/4, 2019-08-24
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:
Stockfish 1.8 64-bit 4CPU has no rank with rating of 3138 Elo points (+16 -16),
based on 1379 games: 673 wins, 177 losses and 529 draws
Score: 68.0%, Average opponent: −125.0, Draws: 38.4%


Pairwise results:
     Opponent                         Elo     Score                  LOS   Perf
 - Rybka 4 64-bit 4CPU                3198  13.5-36.5  (+4 -27=19)    0.0   -89
 - Rybka 3 64-bit 4CPU                3166  24.5-25.5  (+9 -10=31)    0.1   +22
 - Stockfish 1.9.1 64-bit 4CPU        3153  25.0-25.0  (+7 -7 =36)    5.9   +13
 - Stockfish 1.7.1 64-bit 4CPU        3141  28.0-22.0  (+14-8 =28)   37.2   +39
 - Rybka 4 64-bit                     3102  29.0-21.0  (+18-10=22)  100.0   +12
 - Naum 4.2 64-bit 4CPU               3099  29.5-20.5  (+21-12=17)  100.0   +20
 - Pedone 1.5 64-bit 4CPU             3094  18.5-15.5  (+10-7 =17)  100.0   -19
 - Critter 0.80 64-bit 4CPU           3070  28.5-21.5  (+18-11=21)  100.0   -24
 - Naum 4 64-bit 4CPU                 3063  30.5-19.5  (+20-9 =21)  100.0    -7
 - Deep Shredder 12 64-bit 4CPU       3042  32.5-17.5  (+22-7 =21)  100.0    -2
 - Critter 0.70 64-bit 4CPU           3037  34.5-14.5  (+22-2 =25)  100.0   +21
 - Hiarcs 13.2 4CPU                   3033  34.0-15.0  (+23-4 =22)  100.0   +17
 - Hiarcs 13.1 4CPU                   3009  37.5-12.5  (+28-3 =19)  100.0   +33
 - Spark 0.5 64-bit 4CPU              3000  37.5-12.5  (+27-2 =21)  100.0   +24
 - Deep Junior 12 64-bit 4CPU         2990  32.5-17.5  (+24-9 =17)  100.0   -47
 - Zappa Mexico II 64-bit 4CPU        2971  37.5-12.5  (+30-5 =15)  100.0    +7
 - Onno 1.2.70 64-bit 4CPU            2955  36.5-11.5  (+26-1 =21)  100.0   -17
 - Thinker 5.4c Inert 64-bit 4CPU     2952  35.0-15.0  (+25-5 =20)  100.0   -57
 - Protector 1.3.4 64-bit 4CPU        2952  38.5-11.5  (+29-2 =19)  100.0    -6
 - Deep Junior 11.1a 64-bit 4CPU      2943  38.5-11.5  (+32-5 =13)  100.0    +2
 - Deep Sjeng WC2008 64-bit 4CPU      2941  37.5-12.5  (+32-7 =11)  100.0   -10
 - Hiarcs 12 4CPU                     2941  41.5-8.5   (+35-2 =13)  100.0   +49
 - Hiarcs 12.1 4CPU                   2939  38.5-10.5  (+33-5 =11)  100.0   +13
 - Komodo 1.0 64-bit                  2932  38.5-11.5  (+30-3 =17)  100.0   -20
 - Deep Sjeng 3.0 64-bit 4CPU         2930  35.5-14.5  (+28-7 =15)  100.0   -61
 - Deep Junior 11.2 64-bit 4CPU       2925  37.0-13.0  (+30-6 =14)  100.0   -45
 - Bright 0.5c 4CPU                   2906  45.5-4.5   (+41-0 =9 )  100.0  +115
 - Toga II 1.4 beta5c 4CPU            2904  42.0-8.0   (+35-1 =14)  100.0   +16


Created in 2005-2013 by CCRL team
Last games added on August 24, 2019