CCRL 40/40
Downloads and Statistics
November 11, 2017
Testing summary:
Total: 754'213 games
played by 1'962 programs
103027 CPU days (X2 4600+)

White wins: 259'159 (34.4%)
Black wins: 192'263 (25.5%)
Draws: 302'791 (40.1%)
White score: 54.4%

Engine Details

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Stockfish 1.8 64-bit 4CPU in CCRL 40/40, 2017-11-11
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 1.8 64-bit 4CPU has no rank with rating of 3110 Elo points (+20 -20),
based on 770 games: 301 wins, 94 losses and 375 draws
Score: 63.4%, Average opponent: −90.0, Draws: 48.7%


Pairwise results:
     Opponent                        Elo     Score                  LOS   Perf
 - Rybka 4 64-bit 4CPU               3155  27.0-39.0  (+10-22=34)    0.0    -8
 - Rybka 4.1 64-bit 4CPU             3152   9.5-21.5  (+1 -13=17)    0.0   -71
 - Sting SF 6 64-bit 4CPU            3141   9.5-10.5  (+2 -3 =15)    3.9   +14
 - Stockfish 1.9.1 64-bit 4CPU       3117  18.0-15.0  (+6 -3 =24)   32.6   +31
 - Stockfish 1.7.1 64-bit 4CPU       3109  56.5-50.5  (+16-10=81)   52.5   +13
 - Naum 4.2 64-bit 4CPU              3068  35.0-25.0  (+19-9 =32)  100.0    +7
 - Critter 0.80 64-bit 4CPU          3041  18.0-12.0  (+10-4 =16)  100.0   -12
 - Zappa Mexico II 64-bit 4CPU       2974  75.5-29.5  (+57-11=37)  100.0    +9
 - Protector 1.3.6 64-bit 4CPU       2969  16.0-8.0   (+10-2 =12)  100.0   -41
 - Komodo 1.2 64-bit                 2951  39.0-14.0  (+27-2 =24)  100.0   -11
 - Spark 0.4 64-bit 4CPU             2939  67.0-19.0  (+52-4 =30)  100.0   +18
 - Deep Sjeng WC2008 64-bit 4CPU     2931  76.0-26.0  (+59-9 =34)  100.0   -11
 - Hiarcs 12.1 4CPU                  2909  41.5-11.5  (+32-2 =19)  100.0    -9


Created in 2005-2013 by CCRL team
Last games added on November 11, 2017