CCRL 40/4
Downloads and Statistics
August 17, 2019
Testing summary:
Total: 2'085'472 games
played by 2'422 programs
28065 CPU days (X2 4600+)

White wins: 809'852 (38.8%)
Black wins: 654'916 (31.4%)
Draws: 620'704 (29.8%)
White score: 53.7%

Engine Details

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Stockfish 1.6.3 64-bit 4CPU in CCRL 40/4, 2019-08-17
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 1.6.3 64-bit 4CPU has no rank with rating of 3089 Elo points (+13 -13),
based on 2172 games: 1005 wins, 341 losses and 826 draws
Score: 65.3%, Average opponent: −107.3, Draws: 38.0%


Pairwise results:
     Opponent                         Elo     Score                  LOS   Perf
 - Rybka 3 64-bit 4CPU                3166  34.5-64.5  (+15-45=39)    0.0   -21
 - Stockfish 1.7.1 64-bit 4CPU        3141  27.5-38.5  (+5 -16=45)    0.0    +7
 - Naum 4.2 64-bit 4CPU               3099  31.0-33.0  (+17-19=28)   11.0     0
 - Stockfish 1.6s JA 64-bit 4CPU      3093  44.5-54.5  (+14-24=61)   33.5   -24
 - Naum 4.1 64-bit 4CPU               3070  53.0-47.0  (+28-22=50)   97.8     0
 - Naum 4 64-bit 4CPU                 3063  46.0-54.0  (+23-31=46)  100.0   -52
 - Deep Shredder 12 64-bit 4CPU       3042 114.5-85.5  (+70-41=89)  100.0    -2
 - Rybka 2.2 64-bit 4CPU              3002  66.0-34.0  (+43-11=46)  100.0   +12
 - Spark 0.4 64-bit 4CPU              2989  46.5-16.5  (+33-3 =27)  100.0   +50
 - Zappa Mexico II 64-bit 4CPU        2971  72.0-28.0  (+54-10=36)  100.0   +29
 - Spark 0.3 64-bit 4CPU              2969  69.5-30.5  (+49-10=41)  100.0    +4
 - Spark 0.3a 64-bit 4CPU             2962  33.5-16.5  (+26-9 =15)  100.0   -11
 - Thinker 5.4c Inert 64-bit 4CPU     2952  70.5-29.5  (+57-16=27)  100.0    +8
 - Protector 1.3.4 64-bit 4CPU        2952  22.5-11.5  (+15-4 =15)  100.0   -36
 - Zappa Mexico 64-bit 4CPU           2946  75.0-25.0  (+59-9 =32)  100.0   +29
 - Deep Junior 11.1a 64-bit 4CPU      2943  39.5-10.5  (+32-3 =15)  100.0   +60
 - Hiarcs 12 4CPU                     2941  72.5-27.5  (+58-13=29)  100.0   +10
 - Deep Sjeng WC2008 64-bit 4CPU      2940  71.0-29.0  (+54-12=34)  100.0    -4
 - Hiarcs 12.1 4CPU                   2939  66.0-34.0  (+49-17=34)  100.0   -43
 - Bright 0.4a 4CPU                   2910  78.0-22.0  (+64-8 =28)  100.0   +21
 - Bright 0.5c 4CPU                   2906  38.5-11.5  (+33-6 =11)  100.0   +19
 - Toga II 1.4 beta5c 4CPU            2904  76.0-24.0  (+60-8 =32)  100.0    -4
 - Loop M1-T 64-bit 4CPU              2881  78.5-19.5  (+63-4 =31)  100.0    +4
 - Spike 1.2 Turin                    2731  91.5-7.5   (+84-0 =15)  100.0   +20


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