CCRL 40/40
Downloads and Statistics
November 16, 2019
Testing summary:
Total: 1'098'633 games
played by 2'562 programs
150143 CPU days (X2 4600+)

White wins: 380'990 (34.7%)
Black wins: 283'127 (25.8%)
Draws: 434'516 (39.6%)
White score: 54.5%

Custom engine selection

Comparing 6 engines!
6 selected engines played 0 games with each other



CCRL 40/40 Rating List - Custom engine selection
1098633 games played by 2562 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 CPU.
Computed on November 16, 2019 with Bayeselo based on 1'098'633 games
Tested by CCRL team, 2005-2019, http://ccrl.chessdom.com/ccrl/4040/

Rank               Engine                Elo   +    -   Score  AvOp  Games
Gibbon 2.60a 64-bit                2337  +21  -21  49.2%   +3.9   777
  Gibbon 2.69a 64-bit                2319  +18  -18  49.2%   +6.6  1053
  Gibbon 2.57a 64-bit                2273  +23  -23  51.1%  -13.8   664
  Gibbon 2.42c                       2225  +26  -26  46.6%  +23.3   522
  Gibbon 2.52a                       2217  +16  -16  50.8%   -6.6  1328
  Gibbon 2.01b                       2048  +29  -29  47.1%  +34.9   463

Created in 2005-2013 by CCRL team
Last games added on November 16, 2019