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 2.0.1 64-bit 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 2.0.1 64-bit has no rank with rating of 3034 Elo points (+23 -22),
based on 611 games: 209 wins, 115 losses and 287 draws
Score: 57.7%, Average opponent: −49.7, Draws: 47.0%


Pairwise results:
     Opponent                        Elo     Score                  LOS   Perf
 - Houdini 1.5a 64-bit               3119  16.5-27.5  (+6 -17=21)    0.0    +6
 - Critter 1.2 64-bit                3085   7.0-9.0   (+3 -5 =8 )    0.0   +13
 - Rybka 4.1 64-bit                  3081   9.0-11.0  (+4 -6 =10)    0.0   +17
 - Rybka 4 64-bit                    3079  18.5-25.5  (+9 -16=19)    0.0    -3
 - Stockfish 2.1.1 64-bit            3060   9.5-10.5  (+2 -3 =15)    3.0   +10
 - Komodo 2.03 64-bit                3051   8.0-7.0   (+4 -3 =8 )   17.7   +37
 - Critter 1.01 64-bit               3050   2.0-2.0   (+1 -1 =2 )   16.4   +16
 - Rybka 3 64-bit                    3050  12.0-12.0  (+6 -6 =12)    9.7   +16
 - Komodo 2.01 64-bit                3046   9.0-7.0   (+4 -2 =10)   20.4   +43
 - Critter 0.90 64-bit               3041  20.5-19.5  (+11-10=19)   31.8   +12
 - Stockfish 1.9.1 64-bit            3038   2.0-2.0   (+0 -0 =4 )   37.7    +4
 - Naum 4.2 64-bit                   2979  23.5-19.5  (+13-9 =21)  100.0   -30
 - Komodo 1.3 64-bit                 2977  11.0-9.0   (+5 -3 =12)  100.0   -31
 - Critter 0.80 64-bit               2967  16.0-8.0   (+11-3 =10)  100.0   +39
 - Deep Shredder 12 64-bit           2942  34.0-17.0  (+23-6 =22)  100.0   +10
 - Shredder 12 32-bit                2930  12.5-11.5  (+6 -5 =13)  100.0   -92
 - Spike 1.4 Leiden                  2920  11.0-5.0   (+7 -1 =8 )  100.0     0
 - Gull 1.2 64-bit                   2920  14.5-5.5   (+12-3 =5 )  100.0   +50
 - Gull 1.1 64-bit                   2909  25.5-13.5  (+17-5 =17)  100.0   -27
 - Protector 1.4.0 64-bit            2904  11.5-4.5   (+9 -2 =5 )  100.0   +21
 - Hiarcs 13.2                       2899  33.5-13.5  (+23-3 =21)  100.0    -1
 - Spark 1.0 64-bit                  2894  29.0-11.0  (+21-3 =16)  100.0    +6
 - Zappa Mexico II 64-bit            2858  16.5-7.5   (+12-3 =9 )  100.0   -50


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