CCRL 40/40
Downloads and Statistics
April 21, 2018
Testing summary:
Total: 821'008 games
played by 2'134 programs
114427 CPU days (X2 4600+)

White wins: 281'674 (34.3%)
Black wins: 208'551 (25.4%)
Draws: 330'783 (40.3%)
White score: 54.5%

Engine Details

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Stockfish 4 64-bit 4CPU in CCRL 40/40, 2018-04-21
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 4 64-bit 4CPU has no rank with rating of 3210 Elo points (+17 -17),
based on 1054 games: 331 wins, 102 losses and 621 draws
Score: 60.9%, Average opponent: −63.9, Draws: 58.9%


Pairwise results:
     Opponent                         Elo     Score                  LOS   Perf
 - Houdini 4 64-bit 4CPU              3248  31.0-37.0  (+12-18=38)    0.0   +11
 - Houdini 3 64-bit 4CPU              3236  40.5-39.5  (+14-13=53)    0.7   +27
 - Komodo 6 64-bit 4CPU               3216  50.5-58.5  (+11-19=79)   31.8   -13
 - Komodo 5.1 64-bit 4CPU             3205  32.0-28.0  (+16-12=32)   67.1   +16
 - Critter 1.6a 64-bit 4CPU           3165  43.5-34.5  (+15-6 =57)  100.0   -14
 - Bouquet 1.8 64-bit 4CPU            3155  19.0-11.0  (+10-2 =18)  100.0   +18
 - Rybka 4 64-bit 4CPU                3152  23.5-6.5   (+18-1 =11)  100.0  +132
 - Rybka 4.1 64-bit 4CPU              3149  46.0-34.0  (+22-10=48)  100.0   -18
 - Gull 2.3 64-bit 4CPU               3147  36.5-20.5  (+18-2 =37)  100.0   +13
 - Bouquet 1.5 64-bit 4CPU            3136  17.0-13.0  (+6 -2 =22)  100.0   -40
 - Vitruvius 1.11C 64-bit 4CPU        3123  15.0-15.0  (+4 -4 =22)  100.0   -85
 - IvanHoe 9.46h 64-bit 4CPU          3117  19.0-11.0  (+10-2 =18)  100.0   -16
 - RobboLito 0.21Q 64-bit 4CPU        3116  19.0-11.0  (+9 -1 =20)  100.0   -21
 - Sting SF 3 64-bit 4CPU             3113  19.5-10.5  (+10-1 =19)  100.0   -14
 - Sting SF 2 64-bit 4CPU             3112  20.0-10.0  (+11-1 =18)  100.0    -2
 - Gull 2.2 64-bit 4CPU               3102  33.5-16.5  (+20-3 =27)  100.0    -9
 - Hannibal 1.4b 64-bit 4CPU          3082  22.5-7.5   (+15-0 =15)  100.0   +22
 - Naum 4.2 64-bit 4CPU               3065  39.5-12.5  (+29-2 =21)  100.0   +23
 - Protector 1.5.0 64-bit 4CPU        3060  20.5-9.5   (+13-2 =15)  100.0   -39
 - Hiarcs 14 4CPU                     3058  22.0-8.0   (+14-0 =16)  100.0   -13
 - Chiron 1.5 64-bit 4CPU             3051  21.5-8.5   (+13-0 =17)  100.0   -34
 - Chiron 1.1a 64-bit 4CPU            3044  43.5-6.5   (+37-0 =13)  100.0  +113
 - Deep Junior Yokohama 64-bit 4CPU   3029   6.5-3.5   (+4 -1 =5 )  100.0   -87


Created in 2005-2013 by CCRL team
Last games added on April 21, 2018