CCRL 40/40
Downloads and Statistics
November 18, 2017
Testing summary:
Total: 756'425 games
played by 1'967 programs
103446 CPU days (X2 4600+)

White wins: 259'856 (34.4%)
Black wins: 192'693 (25.5%)
Draws: 303'876 (40.2%)
White score: 54.4%

Engine Details

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Stockfish 2.0.1 64-bit 4CPU in CCRL 40/40, 2017-11-18
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, 2005-2017, http://computerchess.org.uk/ccrl/4040/

CCRL 40/40 main list:
Stockfish 2.0.1 64-bit 4CPU has no rank with rating of 3134 Elo points (+24 -24),
based on 514 games: 165 wins, 99 losses and 250 draws
Score: 56.4%, Average opponent: −40.3, Draws: 48.6%


Pairwise results:
     Opponent                        Elo     Score                  LOS   Perf
 - Houdini 1.5a 64-bit 4CPU          3193  31.0-40.0  (+14-23=34)    0.0   +20
 - Rybka 4 64-bit 4CPU               3155  28.5-33.5  (+12-17=33)    6.4    -3
 - Critter 1.2 64-bit 4CPU           3152  14.5-17.5  (+3 -6 =23)   12.7    -5
 - Rybka 4.1 64-bit 4CPU             3151  18.0-24.0  (+6 -12=24)   10.1   -25
 - Critter 1.01 64-bit 4CPU          3098  13.0-5.0   (+8 -0 =10)   96.3   +93
 - Critter 0.90 64-bit 4CPU          3085  34.0-29.0  (+17-12=34)   99.6   -26
 - Naum 4.2 64-bit 4CPU              3068  31.5-23.5  (+21-13=21)  100.0   -21
 - Spike 1.4 Leiden 4CPU             3024  38.0-19.0  (+23-4 =30)  100.0   -13
 - Deep Shredder 12 64-bit 4CPU      3024  34.0-16.0  (+25-7 =18)  100.0    +9
 - Deep Junior 12.5 64-bit 4CPU      3018  23.0-9.0   (+18-4 =10)  100.0   +33
 - Hiarcs 13.2 4CPU                  2988  24.5-7.5   (+18-1 =13)  100.0   +27


Created in 2005-2013 by CCRL team
Last games added on November 18, 2017