CCRL 40/40
Downloads and Statistics
December 10, 2019
Testing summary:
Total: 1'104'091 games
played by 2'573 programs
150964 CPU days (X2 4600+)

White wins: 382'628 (34.7%)
Black wins: 284'145 (25.7%)
Draws: 437'318 (39.6%)
White score: 54.5%

Engine Details

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Stockfish 1.8 64-bit 4CPU in CCRL 40/40, 2019-12-10
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 CPU.
Tested by CCRL team, 2005-2019, http://ccrl.chessdom.com/ccrl/4040/

CCRL 40/40 main list:
Stockfish 1.8 64-bit 4CPU has no rank with rating of 3107 Elo points (+19 -19),
based on 850 games: 319 wins, 112 losses and 419 draws
Score: 62.2%, Average opponent: −82.1, Draws: 49.3%


Pairwise results:
     Opponent                         Elo     Score                  LOS   Perf
 - Arasan 21.1 64-bit 4CPU            3168   5.0-9.0   (+1 -5 =8 )    0.0   -17
 - Rybka 4 64-bit 4CPU                3147  27.0-39.0  (+10-22=34)    0.0   -13
 - Laser 1.5 64-bit 4CPU              3144   8.0-8.0   (+2 -2 =12)    0.5   +37
 - Rybka 4.1 64-bit 4CPU              3144   9.5-21.5  (+1 -13=17)    0.0   -76
 - Vajolet2 2.6.1 64-bit 4CPU         3137   7.0-9.0   (+3 -5 =8 )    2.2    -9
 - Sting SF 6 64-bit 4CPU             3132   9.5-10.5  (+2 -3 =15)    7.2    +8
 - ChessBrainVB 3.68 4CPU             3124   9.0-7.0   (+5 -3 =8 )   14.6   +56
 - Stockfish 1.9.1 64-bit 4CPU        3113  18.0-15.0  (+6 -3 =24)   32.6   +30
 - Stockfish 1.7.1 64-bit 4CPU        3103  56.5-50.5  (+16-10=81)   60.7   +10
 - Nemorino 4.00 64-bit 4CPU          3095  11.0-7.0   (+7 -3 =8 )   77.6   +56
 - Naum 4.2 64-bit 4CPU               3061  35.0-25.0  (+19-9 =32)  100.0    +3
 - Critter 0.80 64-bit 4CPU           3034  18.0-12.0  (+10-4 =16)  100.0   -16
 - Zappa Mexico II 64-bit 4CPU        2969  75.5-29.5  (+57-11=37)  100.0    +8
 - Protector 1.3.6 64-bit 4CPU        2962  16.0-8.0   (+10-2 =12)  100.0   -45
 - Komodo 1.2 64-bit                  2946  39.0-14.0  (+27-2 =24)  100.0   -13
 - Spark 0.4 64-bit 4CPU              2932  67.0-19.0  (+52-4 =30)  100.0   +14
 - Deep Sjeng WC2008 64-bit 4CPU      2925  76.0-26.0  (+59-9 =34)  100.0   -14
 - Hiarcs 12.1 4CPU                   2904  41.5-11.5  (+32-2 =19)  100.0   -11


Created in 2005-2013 by CCRL team
Last games added on December 10, 2019