CCRL 40/4
Downloads and Statistics
December 7, 2019
Testing summary:
Total: 2'143'600 games
played by 2'509 programs
29100 CPU days (X2 4600+)

White wins: 830'432 (38.7%)
Black wins: 670'629 (31.3%)
Draws: 642'539 (30.0%)
White score: 53.7%

Custom engine selection

Comparing 7 engines!
7 selected engines played 0 games with each other



CCRL 40/4 Rating List - Custom engine selection
2143600 games played by 2509 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 4 minutes on Athlon 64 X2 4600+ (2.4 GHz), about 1.5 minutes on a modern CPU.
Computed on December 7, 2019 with Bayeselo based on 2'143'600 games
Tested by CCRL team, 2005-2019, http://ccrl.chessdom.com/ccrl/404/

Rank               Engine                Elo   +    -   Score  AvOp  Games
GNU Chess 5.60 64-bit              2808  +14  -14  47.8%  +14.4  1832
  GNU Chess 5.50 64-bit              2780  +22  -22  47.2%  +19.6   732
  GNU Chess 6.25 64-bit              2660  +31  -32  42.5%  +52.9   346
  GNU Chess 5.07.173b 64-bit         2597  +11  -11  47.7%  +16.6  2995
  GNU Chess 5.07.1705b (TCEC) 64-bit 2596  +14  -14  54.2%  -30.0  1771
  GNU Chess 5.07.9b 64-bit           2347  +15  -15  52.5%  -18.9  1758
  GNU Chess 5.07 64-bit              2238  +20  -20  49.9%   -0.7  1024

Created in 2005-2013 by CCRL team
Last games added on December 7, 2019