CCRL 40/40
Downloads and Statistics
August 24, 2019
Testing summary:
Total: 1'077'764 games
played by 2'521 programs
147276 CPU days (X2 4600+)

White wins: 374'201 (34.7%)
Black wins: 278'337 (25.8%)
Draws: 425'226 (39.5%)
White score: 54.4%

Engine Details

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Stockfish 1.7.1 64-bit 4CPU in CCRL 40/40, 2019-08-24
Ponder off, General book (up to 12 moves), 3-4-5 piece EGTB
Time control: Equivalent to 40 moves in 40 minutes on Athlon 64 X2 4600+ (2.4 GHz), about 15 minutes on a modern Intel CPU.
Tested by CCRL team, 2005-2019, http://computerchess.org.uk/ccrl/4040/

CCRL 40/40 main list:
Stockfish 1.7.1 64-bit 4CPU has no rank with rating of 3104 Elo points (+19 -19),
based on 860 games: 295 wins, 111 losses and 454 draws
Score: 60.7%, Average opponent: −69.7, Draws: 52.8%


Pairwise results:
     Opponent                        Elo     Score                  LOS   Perf
 - Rybka 4 64-bit 4CPU               3148  35.5-51.5  (+6 -22=59)    0.0    -6
 - Rybka 4.1 64-bit 4CPU             3145  10.0-22.0  (+2 -14=16)    0.0   -71
 - Rybka 3 64-bit 4CPU               3123  64.0-65.0  (+28-29=72)    4.8   +16
 - Stockfish 1.8 64-bit 4CPU         3107  50.5-56.5  (+10-16=81)   40.1   -11
 - Xiphos 0.2.2 64-bit 4CPU          3102   8.0-8.0   (+3 -3 =10)   53.8     0
 - Naum 4.2 64-bit 4CPU              3061  30.0-23.0  (+14-7 =32)  100.0    -6
 - Deep Shredder 12 64-bit 4CPU      3019  53.5-24.5  (+32-3 =43)  100.0   +22
 - Deep Fritz 12 4CPU                2985  33.0-17.0  (+20-4 =26)  100.0   -25
 - Zappa Mexico II 64-bit 4CPU       2969  38.0-15.0  (+25-2 =26)  100.0    -3
 - Komodo 1.2 64-bit                 2947  25.0-8.0   (+19-2 =12)  100.0   +12
 - Onno 1.2.70 64-bit 4CPU           2934   2.0-0.0   (+2 -0 =0 )  100.0  +INF
 - Spark 0.4 64-bit 4CPU             2933  41.0-12.0  (+30-1 =22)  100.0    +4
 - Thinker 5.4d Inert 64-bit 4CPU    2927   2.5-0.5   (+2 -0 =1 )  100.0   +41
 - Deep Sjeng WC2008 64-bit 4CPU     2926  42.0-10.0  (+35-3 =14)  100.0   +47
 - Komodo 1.0 64-bit                 2922  41.0-9.0   (+34-2 =14)  100.0   +50
 - Hiarcs 12.1 4CPU                  2905  46.0-16.0  (+33-3 =26)  100.0   -44


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