CCRL 40/40
Downloads and Statistics
January 20, 2018
Testing summary:
Total: 783'129 games
played by 2'026 programs
108312 CPU days (X2 4600+)

White wins: 268'533 (34.3%)
Black wins: 198'801 (25.4%)
Draws: 315'795 (40.3%)
White score: 54.5%

Engine Details

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Bison 9.8 32-bit in CCRL 40/40, 2018-01-20
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, 2005-2018, http://computerchess.org.uk/ccrl/4040/

CCRL 40/40 main list:
Bison 9.8 32-bit has no rank with rating of 2615 Elo points (+33 -33),
based on 295 games: 98 wins, 99 losses and 98 draws
Score: 49.8%, Average opponent: −0.9, Draws: 33.2%


Pairwise results:
     Opponent                         Elo     Score                  LOS   Perf
 - Critter 0.42 32-bit                2706  10.0-15.0  (+5 -10=10)    0.0   +27
 - Cheese 1.8 64-bit                  2683   2.5-5.5   (+0 -3 =5 )    0.0   -32
 - BugChess2 1.6.4 32-bit             2658   0.5-0.5   (+0 -0 =1 )    1.8   +73
 - E.T. Chess 13.01.08                2649   1.0-4.0   (+0 -3 =2 )    3.2  -156
 - Colossus 2008b                     2643   2.0-2.0   (+1 -1 =2 )    6.2   +28
 - Chronos 1.9.7                      2640   9.0-13.0  (+6 -10=6 )   10.0   -41
 - Crafty 23.0 32-bit                 2630   2.5-4.5   (+2 -4 =1 )   24.8   -94
 - WildCat 8                          2629   3.0-5.0   (+1 -3 =4 )   22.3   -59
 - WildCat 7                          2625   7.0-7.0   (+5 -5 =4 )   29.6   +10
 - Ruffian 2.1.0                      2621   7.5-6.5   (+4 -3 =7 )   36.1   +25
 - BugChess2 1.6.3 32-bit             2620  21.5-18.5  (+14-11=15)   38.7   +29
 - Hamsters 0.7.1                     2619   3.0-1.0   (+2 -0 =2 )   40.9  +153
 - Alfil 8.1.1                        2601  24.5-16.5  (+20-12=9 )   78.0   +58
 - Sloppy 0.2.2 32-bit                2599   5.0-3.0   (+2 -0 =6 )   80.7   +47
 - The Baron 2.23 32-bit              2594   4.5-3.5   (+4 -3 =1 )   86.0   +24
 - The Baron 1.8.1                    2591  15.5-16.5  (+11-12=9 )   87.9   -35
 - Petir 4.999999                     2578   1.0-3.0   (+1 -3 =0 )   97.5  -271
 - Critter 0.40 32-bit                2576   2.0-2.0   (+1 -1 =2 )   95.2   -39
 - Rotor 0.5                          2565   4.5-3.5   (+3 -2 =3 )   99.6    -7
 - Zurichess Glarus 64-bit            2557   2.5-3.5   (+2 -3 =1 )   99.6  -124
 - Anaconda 2.0.1                     2555  18.0-14.0  (+14-10=8 )   99.8   -15


Created in 2005-2013 by CCRL team
Last games added on January 20, 2018