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 5 engines!
5 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
Atak 6.7                           2238  +28  -28  51.8%  -11.8   413
  Atak 6.8                           2237  +16  -16  50.9%   -6.4  1421
  Atak 6.5                           2180  +25  -25  50.7%   -5.9   570
  Atak 6.0                           2148  +34  -34  48.6%   +7.5   321
  Atak 6.2                           2079  +36  -36  47.5%  +16.2   304

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