CCRL 40/40
Downloads and Statistics
September 21, 2019
Testing summary:
Total: 1'084'933 games
played by 2'536 programs
148136 CPU days (X2 4600+)

White wins: 376'624 (34.7%)
Black wins: 280'046 (25.8%)
Draws: 428'263 (39.5%)
White score: 54.5%

Custom engine selection

Comparing 8 engines!
8 selected engines played 0 games with each other



CCRL 40/40 Rating List - Custom engine selection
1084933 games played by 2536 programs, run by 23 testers
Ponder off, General books (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.
Computed on September 21, 2019 with Bayeselo based on 1'084'933 games
Tested by CCRL team, 2005-2019, http://computerchess.org.uk/ccrl/4040/

Rank               Engine                Elo   +    -   Score  AvOp  Games
Colossus 2008b                     2644  +13  -13  49.1%   +3.7  2158
  Colossus 2007d                     2613  +23  -23  50.7%   -5.4   635
  Colossus 2007c                     2600  +32  -32  51.4%  -11.5   314
  Colossus 2007a                     2579  +32  -32  48.5%   +7.0   302
  Colossus 2006f                     2555  +23  -23  47.6%  +16.4   658
  Colossus 2008a                     2544  +29  -29  47.2%  +17.0   374
  Colossus 2006d                     2515  +32  -32  48.9%   +7.5   310
  Colossus 2007b                     2515  +34  -34  50.5%   -5.6   307

Created in 2005-2013 by CCRL team
Last games added on September 21, 2019