CCRL 40/40
Downloads and Statistics
August 24, 2019
Testing summary:
Total: 1'077'764 games
played by 2'521 programs
147276 CPU days (X2 4600+)

White wins: 374'201 (34.7%)
Black wins: 278'337 (25.8%)
Draws: 425'226 (39.5%)
White score: 54.4%

Engine Details

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Stockfish 1.6.3 64-bit 4CPU in CCRL 40/40, 2019-08-24
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, 2005-2019, http://computerchess.org.uk/ccrl/4040/

CCRL 40/40 main list:
Stockfish 1.6.3 64-bit 4CPU has no rank with rating of 3041 Elo points (+22 -22),
based on 631 games: 226 wins, 122 losses and 283 draws
Score: 58.2%, Average opponent: −54.8, Draws: 44.8%


Pairwise results:
     Opponent                        Elo     Score                  LOS   Perf
 - Sting SF 4.8.4 64-bit 4CPU        3132   4.5-15.5  (+0 -11=9 )    0.0   -82
 - Protector 1.8.0 64-bit 4CPU       3125   5.0-4.0   (+2 -1 =6 )    0.0  +115
 - Rybka 3 64-bit 4CPU               3123  18.5-33.5  (+8 -23=21)    0.0   -11
 - Fizbo 1.7 64-bit 4CPU             3119   6.0-4.0   (+4 -2 =4 )    0.0  +141
 - Hannibal 1.5 64-bit 4CPU          3110   9.5-10.5  (+4 -5 =11)    0.0   +51
 - ChessBrainVB 3.66 4CPU            3106   6.0-10.0  (+2 -6 =8 )    0.0    -6
 - Naum 4.2 64-bit 4CPU              3061   5.5-9.5   (+2 -6 =7 )    5.1   -67
 - Alfil 15.8 64-bit 4CPU            3056   6.5-7.5   (+2 -3 =9 )   16.2    -5
 - Naum 4.1 64-bit 4CPU              3056  20.0-28.0  (+8 -16=24)   18.2   -35
 - Naum 4 64-bit 4CPU                3046  28.0-20.0  (+15-7 =26)   34.4   +51
 - Deep Shredder 12 64-bit 4CPU      3019  26.5-24.5  (+14-12=25)   96.2    -8
 - Spark 0.3 64-bit 4CPU             2928  32.5-17.5  (+19-4 =27)  100.0   -26
 - Deep Sjeng WC2008 64-bit 4CPU     2926  32.5-15.5  (+21-4 =23)  100.0    -5
 - Komodo 1.0 64-bit                 2922  24.0-8.0   (+17-1 =14)  100.0   +39
 - Hiarcs 12.1 4CPU                  2905  37.5-12.5  (+29-4 =17)  100.0   +32
 - Toga II 1.4.1SE 4CPU              2905  32.0-18.0  (+19-5 =26)  100.0   -51
 - Bright 0.4a 4CPU                  2897  32.0-17.0  (+26-11=12)  100.0   -31
 - Loop M1-T 64-bit 4CPU             2850  41.0-8.0   (+34-1 =14)  100.0   +55


Created in 2005-2013 by CCRL team
Last games added on August 24, 2019