CCRL 40/40
Downloads and Statistics
October 12, 2019
Testing summary:
Total: 1'090'583 games
played by 2'551 programs
149018 CPU days (X2 4600+)

White wins: 378'348 (34.7%)
Black wins: 281'291 (25.8%)
Draws: 430'944 (39.5%)
White score: 54.4%

Engine Details

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Stockfish 6 64-bit 4CPU in CCRL 40/40, 2019-10-12
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://ccrl.chessdom.com/ccrl/4040/

CCRL 40/40 main list:
Stockfish 6 64-bit 4CPU has no rank with rating of 3291 Elo points (+14 -14),
based on 1542 games: 566 wins, 93 losses and 883 draws
Score: 65.3%, Average opponent: −94.1, Draws: 57.3%


Pairwise results:
     Opponent                         Elo     Score                  LOS   Perf
 - Komodo 9.2 64-bit 4CPU             3326  36.5-41.5  (+7 -12=59)    0.1   +17
 - Komodo 9.3 64-bit 4CPU             3323  37.0-47.0  (+6 -16=62)    0.3    -1
 - Komodo 9.1 64-bit 4CPU             3310  39.0-43.0  (+10-14=58)    6.4    +5
 - Komodo 9 64-bit 4CPU               3308  43.0-49.0  (+11-17=64)    7.5     0
 - Komodo 8 64-bit 4CPU               3285  53.0-39.0  (+20-6 =66)   72.4   +33
 - Houdini 4 64-bit 4CPU              3242  76.0-38.0  (+43-5 =66)  100.0   +46
 - Fire 4 64-bit 4CPU                 3198  72.0-40.0  (+37-5 =70)  100.0   -15
 - Gull 3 64-bit 4CPU                 3180  68.5-33.5  (+38-3 =61)  100.0   -13
 - Gull 2.8b 64-bit 4CPU              3179  28.0-14.0  (+17-3 =22)  100.0   -12
 - Equinox 3.20 64-bit 4CPU           3174  30.0-12.0  (+18-0 =24)  100.0    +7
 - Equinox 3.30 64-bit 4CPU           3162  34.0-16.0  (+19-1 =30)  100.0   -28
 - Fritz 15 64-bit 4CPU               3161  34.5-16.5  (+19-1 =31)  100.0   -34
 - Critter 1.6a 64-bit 4CPU           3159  44.5-15.5  (+30-1 =29)  100.0   +13
 - Bouquet 1.8 64-bit 4CPU            3149  39.0-11.0  (+28-0 =22)  100.0   +34
 - Rybka 4 64-bit 4CPU                3148  31.5-10.5  (+22-1 =19)  100.0   +14
 - Rybka 4.1 64-bit 4CPU              3145  40.5-9.5   (+32-1 =17)  100.0   +68
 - NirvanaChess 2.2 64-bit 4CPU       3139  22.0-10.0  (+12-0 =20)  100.0   -47
 - Protector 1.9.0 64-bit 4CPU        3139  25.0-8.0   (+17-0 =16)  100.0    +3
 - Alfil 15.7 64-bit 4CPU             3137  22.5-10.5  (+12-0 =21)  100.0   -53
 - BlackMamba 2.0 64-bit 4CPU         3123  35.0-15.0  (+22-2 =26)  100.0   -49
 - Elektro 1.2 64-bit 4CPU            3118  22.5-9.5   (+16-3 =13)  100.0   -44
 - NirvanaChess 2.1c 64-bit 4CPU      3096  13.5-5.5   (+8 -0 =11)  100.0   -73
 - Naum 4.6 64-bit 4CPU               3095  38.0-12.0  (+27-1 =22)  100.0   -32
 - Chiron 2 64-bit 4CPU               3086  42.0-8.0   (+34-0 =16)  100.0   +36
 - Texel 1.05 64-bit 4CPU             3085  37.5-12.5  (+26-1 =23)  100.0   -48
 - NirvanaChess 2.0a 64-bit 4CPU      3056  42.5-7.5   (+35-0 =15)  100.0   +17


Created in 2005-2013 by CCRL team
Last games added on October 12, 2019