CCRL 40/4
Downloads and Statistics
August 20, 2019
Testing summary:
Total: 2'086'404 games
played by 2'425 programs
28073 CPU days (X2 4600+)

White wins: 810'229 (38.8%)
Black wins: 655'304 (31.4%)
Draws: 620'871 (29.8%)
White score: 53.7%

Custom engine selection

Comparing 9 engines!
9 selected engines played 0 games with each other



CCRL 40/4 Rating List - Custom engine selection
2086404 games played by 2425 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 Intel CPU.
Computed on August 20, 2019 with Bayeselo based on 2'086'404 games
Tested by CCRL team, 2005-2019, http://computerchess.org.uk/ccrl/404/

Rank               Engine                Elo   +    -   Score  AvOp  Games
Atlas 3.91 64-bit                  2924  +13  -13  46.2%  +24.6  2152
  Atlas 3.90 64-bit                  2914  +33  -33  53.5%  -22.4   298
  Atlas 3.80 64-bit                  2874  +10  -10  52.6%  -17.9  3412
  Atlas 3.60 64-bit                  2702  +14  -14  45.9%  +29.9  1809
  Atlas 3.50 64-bit                  2674  +17  -17  52.4%  -17.3  1205
  Atlas 3.25 64-bit                  2569  +15  -15  50.4%   -1.8  1670
  Atlas 3.20 64-bit                  2533  +32  -31  61.2%  -93.5   410
  Atlas 3.14b 64-bit                 2435  +13  -13  49.9%   -0.2  2166
  Atlas 2.20                         2192  +12  -12  49.6%   +1.4  2931

Created in 2005-2013 by CCRL team
Last games added on August 20, 2019