CCRL 40/40
Downloads and Statistics
February 17, 2018
Testing summary:
Total: 795'341 games
played by 2'045 programs
110322 CPU days (X2 4600+)

White wins: 272'710 (34.3%)
Black wins: 201'857 (25.4%)
Draws: 320'774 (40.3%)
White score: 54.5%

Engine Details

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Stockfish 1.5.1 64-bit 4CPU in CCRL 40/40, 2018-02-17
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, 2005-2018, 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: −23.3, 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              2978  33.5-30.5  (+17-14=33)   40.0   +16
 - Zappa Mexico II 64-bit 4CPU        2973  33.0-39.0  (+19-25=28)   51.4   -29
 - Spark 0.3 64-bit 4CPU              2932  28.5-23.5  (+14-9 =29)   99.5   -12
 - Thinker 5.4c Inert 64-bit 4CPU     2927  33.0-22.0  (+20-9 =26)   99.9   +13
 - Hiarcs 12.1 4CPU                   2909  52.5-33.5  (+33-14=39)  100.0    +5
 - Hiarcs 12 4CPU                     2897  24.5-14.5  (+15-5 =19)  100.0    +1
 - 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 February 17, 2018