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 2.3.1 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 2.3.1 64-bit 4CPU has no rank with rating of 3149 Elo points (+19 -19),
based on 846 games: 247 wins, 155 losses and 444 draws
Score: 55.4%, Average opponent: −32.9, Draws: 52.5%


Pairwise results:
     Opponent                         Elo     Score                  LOS   Perf
 - Houdini 3 64-bit 4CPU              3238  25.0-52.0  (+5 -32=40)    0.0   -14
 - Houdini 2.0c 64-bit 4CPU           3200  14.5-17.5  (+7 -10=15)    0.0   +22
 - Houdini 1.5a 64-bit 4CPU           3193   1.5-2.5   (+1 -2 =1 )    0.1   -48
 - Critter 1.6a 64-bit 4CPU           3169  50.0-56.0  (+16-22=68)    2.7    +4
 - Houdini 3 64-bit                   3162  18.0-14.0  (+11-7 =14)   13.4   +49
 - Rybka 4 64-bit 4CPU                3155  13.5-18.5  (+5 -10=17)   31.1   -38
 - Rybka 4.1 64-bit 4CPU              3151  34.5-41.5  (+15-22=39)   43.4   -23
 - Bouquet 1.5 64-bit 4CPU            3139  27.5-25.5  (+12-10=31)   75.9     0
 - Vitruvius 1.11C 64-bit 4CPU        3125   5.0-5.0   (+1 -1 =8 )   97.9   -24
 - IvanHoe 9.46h 64-bit 4CPU          3120   6.5-7.5   (+3 -4 =7 )   99.5   -48
 - RobboLito 0.21Q 64-bit 4CPU        3119   8.0-4.0   (+5 -1 =6 )   98.3   +65
 - Bouquet 1.6 64-bit 4CPU            3115  23.5-14.5  (+12-3 =23)   99.3   +31
 - Sting SF 2 64-bit 4CPU             3115   9.0-5.0   (+4 -0 =10)   98.0   +40
 - Komodo 5 64-bit                    3113   8.5-7.5   (+4 -3 =9 )   99.9   -17
 - Strelka 5.5 64-bit                 3108   4.0-2.0   (+3 -1 =2 )  100.0   +69
 - Naum 4.2 64-bit 4CPU               3067  27.5-13.5  (+19-5 =17)  100.0   +25
 - Protector 1.5.0 64-bit 4CPU        3063   4.0-2.0   (+2 -0 =4 )  100.0    +3
 - Hiarcs 14 4CPU                     3061   5.5-4.5   (+2 -1 =7 )  100.0   -60
 - Chiron 1.5 64-bit 4CPU             3053  17.0-13.0  (+9 -5 =16)  100.0   -56
 - Gull R375 64-bit 4CPU              3045  22.5-7.5   (+16-1 =13)  100.0   +54
 - Deep Fritz 13 4CPU                 3041  24.5-7.5   (+17-0 =15)  100.0   +55
 - Hannibal 1.3 64-bit 4CPU           3040  25.0-11.0  (+14-0 =22)  100.0     0
 - Deep Junior 13 64-bit 4CPU         3033  23.0-9.0   (+16-2 =14)  100.0   +19
 - Deep Junior 13.3 64-bit 4CPU       3025  18.5-13.5  (+12-7 =13)  100.0   -77
 - Deep Shredder 12 64-bit 4CPU       3024  22.5-11.5  (+15-4 =15)  100.0   -22
 - Spike 1.4 Leiden 4CPU              3023  26.0-10.0  (+18-2 =16)  100.0   +14
 - Rybka 2.3.2a 64-bit 4CPU           3021   3.0-1.0   (+2 -0 =2 )  100.0   +29
 - Protector 1.4.0 64-bit 4CPU        2989   1.0-0.0   (+1 -0 =0 )  100.0  +INF


Created in 2005-2013 by CCRL team
Last games added on February 17, 2018