CCRL 40/4
Downloads and Statistics
August 20, 2019
Testing summary:
Total: 2'086'404 games
played by 2'425 programs
28073 CPU days (X2 4600+)

White wins: 810'229 (38.8%)
Black wins: 655'304 (31.4%)
Draws: 620'871 (29.8%)
White score: 53.7%

Engine Details

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Stockfish 2.3.1 64-bit 4CPU in CCRL 40/4, 2019-08-20
Ponder off, General book (up to 12 moves), 3-4-5 piece EGTB
Time control: Equivalent to 40 moves in 4 minutes on Athlon 64 X2 4600+ (2.4 GHz), about 1.5 minutes on a modern Intel CPU.
Tested by CCRL team, 2005-2019, http://computerchess.org.uk/ccrl/404/

CCRL 40/4 main list:
Stockfish 2.3.1 64-bit 4CPU has no rank with rating of 3221 Elo points (+18 -18),
based on 951 games: 343 wins, 162 losses and 446 draws
Score: 59.5%, Average opponent: −60.4, Draws: 46.9%


Pairwise results:
     Opponent                         Elo     Score                  LOS   Perf
 - Houdini 3 64-bit 4CPU              3319  20.0-30.0  (+6 -16=28)    0.0   +40
 - Houdini 2.0c 64-bit 4CPU           3277  54.0-64.0  (+33-43=42)    0.0   +29
 - Critter 1.6a 64-bit 4CPU           3232  49.5-54.5  (+18-23=63)   11.7    -3
 - Rybka 4.1 64-bit 4CPU              3206  54.0-50.0  (+26-22=56)   93.7    -2
 - Komodo 5 64-bit                    3145  64.5-39.5  (+38-13=53)  100.0    -6
 - Strelka 5.5 64-bit                 3140  64.5-36.5  (+38-10=53)  100.0     0
 - Hiarcs 14 4CPU                     3108  36.0-16.0  (+29-9 =14)  100.0   +22
 - Naum 4.2 64-bit 4CPU               3098  65.0-35.0  (+42-12=46)  100.0   -31
 - Chiron 1.5 64-bit 4CPU             3094  33.5-18.5  (+20-5 =27)  100.0   -42
 - Deep Fritz 13 4CPU                 3073  36.5-15.5  (+24-3 =25)  100.0   -26
 - Chiron 1.1a 64-bit 4CPU            3063  47.0-15.0  (+35-3 =24)  100.0    +9
 - Deep Junior 13.3 64-bit 4CPU       3026  41.5-10.5  (+34-3 =15)  100.0   +18


Created in 2005-2013 by CCRL team
Last games added on August 20, 2019