CCRL 40/4
Downloads and Statistics
August 10, 2019
Testing summary:
Total: 2'081'140 games
played by 2'415 programs
27982 CPU days (X2 4600+)

White wins: 808'296 (38.8%)
Black wins: 653'685 (31.4%)
Draws: 619'159 (29.8%)
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
2081140 games played by 2415 programs, run by 21 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 Intel CPU.
Computed on August 10, 2019 with Bayeselo based on 2'081'140 games
Tested by CCRL team, 2005-2019, http://computerchess.org.uk/ccrl/404/

Rank               Engine                Elo   +    -   Score  AvOp  Games
GNU Chess 5.60 64-bit              2807  +14  -14  47.8%  +14.7  1832
  GNU Chess 5.50 64-bit              2779  +21  -22  47.2%  +19.9   732
  GNU Chess 6.25 64-bit              2660  +31  -32  42.5%  +52.4   346
  GNU Chess 5.07.173b 64-bit         2597  +11  -11  47.7%  +16.2  2995
  GNU Chess 5.07.1705b (TCEC) 64-bit 2596  +14  -14  54.2%  -30.5  1771
  GNU Chess 5.07.9b 64-bit           2347  +15  -15  52.5%  -19.3  1758
  GNU Chess 5.07 64-bit              2237  +20  -20  49.9%   -0.2  1024

Created in 2005-2013 by CCRL team
Last games added on August 10, 2019