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 1.5.1 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 1.5.1 64-bit 4CPU has no rank with rating of 3028 Elo points (+14 -14),
based on 1649 games: 654 wins, 359 losses and 636 draws
Score: 58.9%, Average opponent: −61.1, Draws: 38.6%


Pairwise results:
     Opponent                         Elo     Score                  LOS   Perf
 - Rybka 3 64-bit 4CPU                3166  29.5-70.5  (+11-52=37)    0.0    +2
 - Pedone 1.6 64-bit 4CPU             3115  15.0-37.0  (+6 -28=18)    0.0   -54
 - Naum 4 64-bit 4CPU                 3062  44.5-55.5  (+18-29=53)    0.0     0
 - Deep Shredder 12 64-bit 4CPU       3041 106.5-92.5  (+70-56=73)    4.4   +36
 - Rybka 2.2 64-bit 4CPU              3002  54.0-46.0  (+35-27=38)   99.8     0
 - Zappa Mexico II 64-bit 4CPU        2970  60.0-40.0  (+31-11=58)  100.0    -1
 - Spark 0.3 64-bit 4CPU              2969  59.0-41.0  (+37-19=44)  100.0    -1
 - Thinker 5.4c Inert 64-bit 4CPU     2952  63.5-36.5  (+44-17=39)  100.0   +11
 - Zappa Mexico 64-bit 4CPU           2945  57.0-43.0  (+37-23=40)  100.0   -38
 - Hiarcs 12 4CPU                     2941  56.5-42.5  (+36-22=41)  100.0   -42
 - Deep Sjeng WC2008 64-bit 4CPU      2940  59.0-41.0  (+41-23=36)  100.0   -29
 - Hiarcs 12.1 4CPU                   2938  69.5-30.5  (+54-15=31)  100.0   +43
 - Bright 0.4a 4CPU                   2910  63.5-36.5  (+42-15=43)  100.0   -33
 - Toga II 1.4 beta5c 4CPU            2904  76.0-24.0  (+61-9 =30)  100.0   +58
 - Loop M1-T 64-bit 4CPU              2881  75.0-24.0  (+62-11=26)  100.0   +39
 - Spike 1.2 Turin                    2731  83.5-16.5  (+69-2 =29)  100.0   -53


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