CCRL 40/40
Downloads and Statistics
September 14, 2019
Testing summary:
Total: 1'083'337 games
played by 2'531 programs
147896 CPU days (X2 4600+)

White wins: 376'125 (34.7%)
Black wins: 279'699 (25.8%)
Draws: 427'513 (39.5%)
White score: 54.5%

Engine Details

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Stockfish 1.4 64-bit 4CPU in CCRL 40/40, 2019-09-14
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 1.4 64-bit 4CPU has no rank with rating of 2949 Elo points (+17 -17),
based on 1131 games: 375 wins, 279 losses and 477 draws
Score: 54.2%, Average opponent: −28.7, Draws: 42.2%


Pairwise results:
     Opponent                        Elo     Score                  LOS   Perf
 - Rybka 3 64-bit 4CPU               3123  22.0-78.0  (+3 -59=38)    0.0   -12
 - Naum 4 64-bit 4CPU                3046  15.5-32.5  (+5 -22=21)    0.0   -13
 - Cheng 4.39 64-bit 4CPU            3010   5.5-4.5   (+4 -3 =3 )    0.0  +101
 - Fizbo 1.5 64-bit 4CPU             2994   3.0-7.0   (+0 -4 =6 )    0.3   -66
 - Rybka 2.2 64-bit 4CPU             2976  57.0-66.0  (+28-37=58)    1.7    +4
 - Zappa Mexico II 64-bit 4CPU       2970  23.5-38.5  (+12-27=23)    1.9   -53
 - Fizbo 1.4 64-bit 4CPU             2933   3.0-5.0   (+1 -3 =4 )   83.3   -85
 - Spark 0.3 64-bit 4CPU             2929  18.0-14.0  (+11-7 =14)   92.2   +22
 - Arasan 18.0 64-bit 4CPU           2927  10.0-10.0  (+6 -6 =8 )   90.1   -22
 - Deep Sjeng WC2008 64-bit 4CPU     2927  25.5-22.5  (+12-9 =27)   98.4    -3
 - Thinker 5.4c Inert 64-bit 4CPU    2924  25.5-24.5  (+13-12=25)   98.7   -18
 - Deep Shredder 11 64-bit 4CPU      2917  53.5-48.5  (+31-26=45)   99.9   -16
 - Toga II 1.4.1SE 4CPU              2905  29.0-21.0  (+18-10=22)  100.0    +4
 - Hiarcs 12.1 4CPU                  2905  29.5-18.5  (+20-9 =19)  100.0   +27
 - Bright 0.4a 4CPU                  2898  26.0-22.0  (+14-10=24)  100.0   -24
 - Glaurung 2.2 64-bit 4CPU          2897  29.5-18.5  (+15-4 =29)  100.0   +13
 - Hiarcs 12 4CPU                    2894  29.0-19.0  (+22-12=14)  100.0   +17
 - Hiarcs Paderborn 2007 4CPU        2892  32.0-16.0  (+23-7 =18)  100.0   +51
 - Loop M1-T 64-bit 4CPU             2850  34.5-15.5  (+24-5 =21)  100.0   +20
 - Onno 1.0 64-bit                   2819  25.0-7.0   (+19-1 =12)  100.0   +57
 - Crafty 23.0 64-bit 4CPU           2760  40.0-8.0   (+33-1 =14)  100.0   +52
 - Spike 1.2 Turin                   2746  40.5-9.5   (+33-2 =15)  100.0   +17
 - Scorpio 2.0 32-bit 4CPU           2732  36.5-11.5  (+28-3 =17)  100.0   -41


Created in 2005-2013 by CCRL team
Last games added on September 14, 2019