CCRL 40/4
Downloads and Statistics
October 12, 2019
Testing summary:
Total: 2'115'766 games
played by 2'468 programs
28564 CPU days (X2 4600+)

White wins: 821'094 (38.8%)
Black wins: 663'997 (31.4%)
Draws: 630'675 (29.8%)
White score: 53.7%

Custom engine selection

Comparing 16 engines!
16 selected engines played 10 games with each other



CCRL 40/4 Rating List - Custom engine selection
2115766 games played by 2468 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 October 12, 2019 with Bayeselo based on 2'115'766 games
Tested by CCRL team, 2005-2019, http://ccrl.chessdom.com/ccrl/404/

Rank               Engine                Elo   +    -   Score  AvOp  Games
Booot 6.3.1 64-bit 4CPU            3325  +14  -14  40.9%  +58.5  1640
  Booot 6.2 64-bit 4CPU              3257  +13  -13  42.7%  +56.5  2017
  Booot 6.3.1 64-bit                 3255  +12  -12  46.5%  +23.3  2300
  Booot 6.3 64-bit                   3238  +17  -17  40.6%  +63.1  1050
  Booot 6.1 64-bit 4CPU              3188  +15  -15  43.7%  +44.8  1536
  Booot 6.2 64-bit                   3168   +9   -9  41.1%  +69.5  4783
  Booot 6.1 64-bit                   3086  +13  -13  46.0%  +33.2  2112
  Booot 6.0.2 64-bit                 3041  +15  -15  52.6%  -18.0  1342
  Booot 5.2.0 64-bit                 2922  +11  -10  48.9%  +10.3  3230
  Booot 5.1.0                        2839  +11  -11  48.2%  +14.5  3102
  Booot 5.0                          2785  +15  -15  57.6%  -57.5  1715
  Booot 4.15.1                       2668  +14  -14  48.6%  +13.7  2010
  Booot 4.15.0                       2666  +12  -12  49.8%   +2.7  2442
  Booot 4.14.0                       2612  +21  -21  49.7%   +1.8   758
  Booot 4.13.1                       2564  +13  -13  49.0%   +6.3  2049
  Booot 4.12.1                       2476  +27  -27  42.9%  +50.2   472

Created in 2005-2013 by CCRL team
Last games added on October 12, 2019