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 6 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 6 64-bit 4CPU has no rank with rating of 3300 Elo points (+14 -14),
based on 1542 games: 566 wins, 93 losses and 883 draws
Score: 65.3%, Average opponent: −94.4, Draws: 57.3%


Pairwise results:
     Opponent                         Elo     Score                  LOS   Perf
 - Komodo 9.2 64-bit 4CPU             3335  36.5-41.5  (+7 -12=59)    0.1   +17
 - Komodo 9.3 64-bit 4CPU             3332  37.0-47.0  (+6 -16=62)    0.2    -1
 - Komodo 9.1 64-bit 4CPU             3318  39.0-43.0  (+10-14=58)    6.5    +4
 - Komodo 9 64-bit 4CPU               3317  43.0-49.0  (+11-17=64)    7.6     0
 - Komodo 8 64-bit 4CPU               3293  53.0-39.0  (+20-6 =66)   73.9   +32
 - Houdini 4 64-bit 4CPU              3251  76.0-38.0  (+43-5 =66)  100.0   +46
 - Fire 4 64-bit 4CPU                 3207  72.0-40.0  (+37-5 =70)  100.0   -15
 - Gull 3 64-bit 4CPU                 3191  68.5-33.5  (+38-3 =61)  100.0   -11
 - Gull 2.8b 64-bit 4CPU              3187  28.0-14.0  (+17-3 =22)  100.0   -13
 - Equinox 3.20 64-bit 4CPU           3186  30.0-12.0  (+18-0 =24)  100.0   +10
 - Fritz 15 64-bit 4CPU               3171  34.5-16.5  (+19-1 =31)  100.0   -33
 - Equinox 3.30 64-bit 4CPU           3171  34.0-16.0  (+19-1 =30)  100.0   -28
 - Critter 1.6a 64-bit 4CPU           3169  44.5-15.5  (+30-1 =29)  100.0   +14
 - Bouquet 1.8 64-bit 4CPU            3158  39.0-11.0  (+28-0 =22)  100.0   +34
 - Rybka 4 64-bit 4CPU                3155  31.5-10.5  (+22-1 =19)  100.0   +12
 - Rybka 4.1 64-bit 4CPU              3151  40.5-9.5   (+32-1 =17)  100.0   +65
 - NirvanaChess 2.2 64-bit 4CPU       3148  22.0-10.0  (+12-0 =20)  100.0   -47
 - Protector 1.9.0 64-bit 4CPU        3147  25.0-8.0   (+17-0 =16)  100.0    +2
 - Alfil 15.7 64-bit 4CPU             3145  22.5-10.5  (+12-0 =21)  100.0   -54
 - BlackMamba 2.0 64-bit 4CPU         3131  35.0-15.0  (+22-2 =26)  100.0   -50
 - Elektro 1.2 64-bit 4CPU            3126  22.5-9.5   (+16-3 =13)  100.0   -45
 - NirvanaChess 2.1c 64-bit 4CPU      3103  13.5-5.5   (+8 -0 =11)  100.0   -75
 - Naum 4.6 64-bit 4CPU               3103  38.0-12.0  (+27-1 =22)  100.0   -33
 - Chiron 2 64-bit 4CPU               3093  42.0-8.0   (+34-0 =16)  100.0   +34
 - Texel 1.05 64-bit 4CPU             3092  37.5-12.5  (+26-1 =23)  100.0   -50
 - NirvanaChess 2.0a 64-bit 4CPU      3063  42.5-7.5   (+35-0 =15)  100.0   +15


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