CCRL 40/40
Downloads and Statistics
November 18, 2017
Testing summary:
Total: 756'425 games
played by 1'967 programs
103446 CPU days (X2 4600+)

White wins: 259'856 (34.4%)
Black wins: 192'693 (25.5%)
Draws: 303'876 (40.2%)
White score: 54.4%

Engine Details

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Stockfish 1.5.1 64-bit 4CPU in CCRL 40/40, 2017-11-18
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, 2005-2017, http://computerchess.org.uk/ccrl/4040/

CCRL 40/40 main list:
Stockfish 1.5.1 64-bit 4CPU has no rank with rating of 2974 Elo points (+25 -24),
based on 495 games: 148 wins, 111 losses and 236 draws
Score: 53.7%, Average opponent: −23.7, Draws: 47.7%


Pairwise results:
     Opponent                        Elo     Score                  LOS   Perf
 - Naum 4 64-bit 4CPU                3050  15.5-18.5  (+7 -10=17)    0.0   +51
 - Deep Shredder 12 64-bit 4CPU      3024  18.5-31.5  (+6 -19=25)    0.0   -28
 - Rybka 2.2 64-bit 4CPU             2977  33.5-30.5  (+17-14=33)   41.1   +15
 - Zappa Mexico II 64-bit 4CPU       2973  33.0-39.0  (+19-25=28)   51.1   -29
 - Spark 0.3 64-bit 4CPU             2932  28.5-23.5  (+14-9 =29)   99.4   -12
 - Thinker 5.4c Inert 64-bit 4CPU    2927  33.0-22.0  (+20-9 =26)   99.9   +13
 - Hiarcs 12.1 4CPU                  2908  52.5-33.5  (+33-14=39)  100.0    +4
 - Hiarcs 12 4CPU                    2896  24.5-14.5  (+15-5 =19)  100.0     0
 - Hiarcs Paderborn 2007 4CPU        2894  27.0-16.0  (+17-6 =20)  100.0     0


Created in 2005-2013 by CCRL team
Last games added on November 18, 2017