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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Rybka 2.2 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:
Rybka 2.2 64-bit 4CPU has no rank with rating of 2977 Elo points (+21 -20),
based on 795 games: 352 wins, 111 losses and 332 draws
Score: 65.2%, Average opponent: −102.5, Draws: 41.8%


Pairwise results:
     Opponent                        Elo     Score                  LOS   Perf
 - Rybka 2.1 64-bit 4CPU             3003  16.0-14.0  (+6 -4 =20)    9.3   +42
 - Stockfish 1.5.1 64-bit 4CPU       2974  30.5-33.5  (+14-17=33)   58.9   -15
 - EXchess 7.88b 64-bit 4CPU         2965   5.0-5.0   (+2 -2 =6 )   75.0   -12
 - Stockfish 1.4 64-bit 4CPU         2952  66.0-57.0  (+37-28=58)   97.8    -2
 - Zap!Chess Zanzibar 64-bit 4CPU    2950  31.0-29.0  (+17-15=28)   96.5   -15
 - Thinker 5.4c Inert 64-bit 4CPU    2927  15.5-16.5  (+5 -6 =21)  100.0   -60
 - Toga II 1.4.1SE 4CPU              2908  17.5-14.5  (+10-7 =15)  100.0   -39
 - Glaurung 2.2 64-bit 4CPU          2900  19.0-13.0  (+13-7 =12)  100.0   -17
 - Bright 0.4a 4CPU                  2900  17.0-15.0  (+12-10=10)  100.0   -53
 - Hiarcs 11.1 4CPU                  2879  25.5-9.5   (+19-3 =13)  100.0   +50
 - Naum 2.1 64-bit 4CPU              2866  23.0-9.0   (+15-1 =16)  100.0   +23
 - Loop 13.6 (Loop 2007) 64-bit 4CPU 2842  25.5-8.5   (+18-1 =15)  100.0   +22
 - Deep Shredder 10 64-bit 4CPU      2833  25.0-6.0   (+21-2 =8 )  100.0   +78
 - Deep Fritz 10 4CPU                2832  24.5-5.5   (+19-0 =11)  100.0   +71
 - Deep Junior 10 4CPU               2805  26.0-5.0   (+23-2 =6 )  100.0   +96
 - Glaurung 1.2.1 64-bit 4CPU        2767  26.0-6.0   (+21-1 =10)  100.0    +9
 - Crafty 23.0 64-bit 4CPU           2761  25.5-6.5   (+20-1 =11)  100.0   -11
 - Toga II 1.2.1a 32-bit             2760  23.0-7.0   (+17-1 =12)  100.0   -48
 - Spike 1.2 Turin                   2746  26.0-4.0   (+22-0 =8 )  100.0   +42
 - Scorpio 2.0 32-bit 4CPU           2733  25.5-5.5   (+21-1 =9 )  100.0   -10
 - Scorpio 2.1 64-bit 4CPU           2721  25.0-7.0   (+20-2 =10)  100.0   -60


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