CCRL 40/40
Downloads and Statistics
July 11, 2019
Testing summary:
Total: 1'066'603 games
played by 2'494 programs
145750 CPU days (X2 4600+)

White wins: 370'641 (34.7%)
Black wins: 275'905 (25.9%)
Draws: 420'057 (39.4%)
White score: 54.4%

Custom engine selection

Comparing 5 engines!
5 selected engines played 0 games with each other



CCRL 40/40 Rating List - Custom engine selection
1066603 games played by 2494 programs, run by 22 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 July 11, 2019 with Bayeselo based on 1'066'603 games
Tested by CCRL team, 2005-2019, http://computerchess.org.uk/ccrl/4040/

Rank               Engine                Elo   +    -   Score  AvOp  Games
LittleThought 1.052 64-bit         2499  +16  -16  47.8%  +14.5  1362
  LittleThought 1.052 32-bit         2467  +18  -19  49.8%   +1.9  1012
  LittleThought 1.04 32-bit          2393  +34  -34  49.8%   +1.9   303
  LittleThought 1.03 32-bit          2338  +21  -21  47.5%  +19.8   826
  LittleThought 1.00 32-bit          2324  +33  -34  49.2%   +6.2   307

Created in 2005-2013 by CCRL team
Last games added on July 11, 2019