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 2.1.1 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 2.1.1 64-bit 4CPU has no rank with rating of 3120 Elo points (+27 -27),
based on 406 games: 124 wins, 86 losses and 196 draws
Score: 54.7%, Average opponent: −28.8, Draws: 48.3%


Pairwise results:
     Opponent                        Elo     Score                  LOS   Perf
 - Houdini 2.0c 64-bit 4CPU          3201  18.0-34.0  (+7 -23=22)    0.0   -16
 - Houdini 1.5a 64-bit 4CPU          3193  23.0-40.0  (+9 -26=28)    0.0    -9
 - Critter 1.2 64-bit 4CPU           3152  15.0-16.0  (+5 -6 =20)    2.9   +23
 - Rybka 4.1 64-bit 4CPU             3151  21.5-28.5  (+7 -14=29)    1.7   -11
 - Spike 1.4 Leiden 4CPU             3024  63.5-28.5  (+44-9 =39)  100.0   +24
 - Deep Shredder 12 64-bit 4CPU      3024  14.5-7.5   (+9 -2 =11)  100.0    -4
 - Deep Junior 12.5 64-bit 4CPU      3018  18.5-13.5  (+8 -3 =21)  100.0   -58
 - Hiarcs 13.2 4CPU                  2988  25.0-7.0   (+19-1 =12)  100.0   +52
 - Spark 1.0 64-bit 4CPU             2976  23.0-9.0   (+16-2 =14)  100.0    -4


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