CCRL 40/40
Downloads and Statistics
July 19, 2019
Testing summary:
Total: 1'068'538 games
played by 2'502 programs
146028 CPU days (X2 4600+)

White wins: 371'241 (34.7%)
Black wins: 276'263 (25.9%)
Draws: 421'034 (39.4%)
White score: 54.4%

Engine Details

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Critter 0.70 64-bit in CCRL 40/40, 2019-07-19
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 0.70 64-bit has no rank with rating of 2920 Elo points (+27 -27),
based on 420 games: 134 wins, 98 losses and 188 draws
Score: 54.3%, Average opponent: −27.3, Draws: 44.8%


Pairwise results:
     Opponent                         Elo     Score                  LOS   Perf
 - Rybka 4 64-bit                     3077   6.0-18.0  (+2 -14=8 )    0.0   -11
 - Stockfish 1.7.1 64-bit             3009   8.5-15.5  (+3 -10=11)    0.0    +1
 - ChessBrainVB 3.50                  2979   4.0-6.0   (+2 -4 =4 )    0.1    -4
 - Naum 4.2 64-bit                    2976   7.0-17.0  (+2 -12=10)    0.0   -79
 - chess22k 1.9 64-bit                2950   7.5-4.5   (+4 -1 =7 )    4.2   +99
 - SmarThink 1.80 64-bit              2938   5.5-4.5   (+3 -2 =5 )   16.1   +48
 - Rodent III 0.210 64-bit            2936   3.0-5.0   (+1 -3 =4 )   16.4   -53
 - Crafty 25.2 64-bit                 2930   5.0-5.0   (+3 -3 =4 )   24.9   +14
 - Fizbo 1.4 64-bit                   2928   5.0-5.0   (+3 -3 =4 )   33.0    +8
 - Shredder 12 32-bit                 2928  12.0-12.0  (+6 -6 =12)   27.1    +9
 - Komodo 1.0 64-bit                  2921  12.5-11.5  (+6 -5 =13)   46.4   +13
 - Hiarcs 13.1                        2874  13.5-10.5  (+8 -5 =11)   99.9    -7
 - Thinker 5.4c Inert 64-bit          2860  17.0-7.0   (+11-1 =12)  100.0   +65
 - Zappa Mexico II 64-bit             2854  12.0-12.0  (+5 -5 =14)  100.0   -69
 - Protector 1.3.4 64-bit             2840  16.0-8.0   (+9 -1 =14)  100.0   +13
 - Deep Sjeng WC2008 64-bit           2835  14.5-9.5   (+10-5 =9 )  100.0   -17
 - Spark 0.3 64-bit                   2834  14.0-10.0  (+9 -5 =10)  100.0   -30
 - Onno 1.2.70 64-bit                 2833  14.5-9.5   (+8 -3 =13)  100.0   -24
 - Deep Junior 11.2 64-bit            2828  15.0-9.0   (+11-5 =8 )  100.0    -6
 - Grapefruit 1.0 32-bit              2826  16.5-7.5   (+12-3 =9 )  100.0   +28
 - Twisted Logic 20100131x 64-bit     2767  19.0-5.0   (+16-2 =6 )  100.0   +58


Created in 2005-2013 by CCRL team
Last games added on July 19, 2019