CCRL 40/40
Downloads and Statistics
August 17, 2019
Testing summary:
Total: 1'075'629 games
played by 2'520 programs
147029 CPU days (X2 4600+)

White wins: 373'444 (34.7%)
Black wins: 277'846 (25.8%)
Draws: 424'339 (39.5%)
White score: 54.4%

Engine Details

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Stockfish 2.2 64-bit in CCRL 40/40, 2019-08-17
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, 2005-2019, http://computerchess.org.uk/ccrl/4040/

CCRL 40/40 main list:
Stockfish 2.2 64-bit has no rank with rating of 3063 Elo points (+36 -36),
based on 222 games: 66 wins, 34 losses and 122 draws
Score: 57.2%, Average opponent: −44.1, Draws: 55.0%


Pairwise results:
     Opponent                        Elo     Score                  LOS   Perf
 - Houdini 1.5a 64-bit               3110  11.0-15.0  (+5 -9 =12)    0.6    -2
 - Komodo 4 64-bit                   3098  11.5-14.5  (+5 -8 =13)    3.2     0
 - Critter 1.4 64-bit                3081  14.0-10.0  (+7 -3 =14)   18.4   +62
 - Rybka 4.1 64-bit                  3078  12.0-13.0  (+3 -4 =18)   21.2    +5
 - Andscacs 0.85 64-bit              3060   4.5-5.5   (+1 -2 =7 )   56.1   -30
 - Sting SF 6.1 64-bit               3017   5.5-4.5   (+2 -1 =7 )   97.6   -18
 - Chiron 1.1a 64-bit                2979  15.5-10.5  (+8 -3 =15)  100.0   -30
 - Naum 4.2 64-bit                   2976  17.0-8.0   (+10-1 =14)  100.0   +21
 - Gull 1.2 64-bit                   2919  17.0-7.0   (+11-1 =12)  100.0   -20
 - Spark 1.0 64-bit                  2893  19.0-7.0   (+14-2 =10)  100.0   -21


Created in 2005-2013 by CCRL team
Last games added on August 17, 2019