CCRL 40/40
Downloads and Statistics
July 11, 2019
Testing summary:
Total: 1'066'603 games
played by 2'494 programs
145750 CPU days (X2 4600+)

White wins: 370'641 (34.7%)
Black wins: 275'905 (25.9%)
Draws: 420'057 (39.4%)
White score: 54.4%

Engine Details

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Critter 1.01 64-bit in CCRL 40/40, 2019-07-11
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:
Critter 1.01 64-bit has no rank with rating of 3045 Elo points (+23 -23),
based on 560 games: 174 wins, 127 losses and 259 draws
Score: 54.2%, Average opponent: −28.3, Draws: 46.3%


Pairwise results:
     Opponent                         Elo     Score                  LOS   Perf
 - Houdini 1.5a 64-bit                3110  16.5-27.5  (+8 -19=17)    0.0   -15
 - Rybka 4.1 64-bit                   3078   7.0-13.0  (+1 -7 =12)    0.5   -50
 - Rybka 4 64-bit                     3077  13.5-14.5  (+6 -7 =15)    0.8   +21
 - Stockfish 2.1.1 64-bit             3053  66.0-73.0  (+27-34=78)   28.4    -6
 - Rybka 3 64-bit                     3047  11.5-12.5  (+5 -6 =13)   44.0    -7
 - Komodo 2.03 64-bit                 3046   7.0-9.0   (+3 -5 =8 )   47.3   -40
 - Komodo 2.01 64-bit                 3042  30.5-34.5  (+13-17=35)   57.3   -21
 - Stockfish 1.9.1 64-bit             3035  13.5-14.5  (+6 -7 =15)   73.5   -20
 - Stockfish 2.0.1 64-bit             3030   2.0-2.0   (+1 -1 =2 )   81.7   -15
 - Naum 4.2 64-bit                    2976  18.5-9.5   (+13-4 =11)  100.0   +30
 - Komodo 1.3 64-bit                  2973  18.5-9.5   (+12-3 =13)  100.0   +27
 - Deep Shredder 12 64-bit            2940  13.0-7.0   (+9 -3 =8 )  100.0   -11
 - Shredder 12 32-bit                 2928  17.0-7.0   (+13-3 =8 )  100.0   +20
 - Gull 1.2 64-bit                    2919  30.0-14.0  (+23-7 =14)  100.0    -3
 - Spike 1.4 Leiden                   2915  19.0-5.0   (+16-2 =6 )  100.0   +83
 - Protector 1.4.0 64-bit             2903  20.0-4.0   (+18-2 =4 )  100.0  +126


Created in 2005-2013 by CCRL team
Last games added on July 11, 2019