CCRL 40/4
Downloads and Statistics
July 17, 2019
Testing summary:
Total: 2'068'038 games
played by 2'396 programs
27793 CPU days (X2 4600+)

White wins: 803'434 (38.9%)
Black wins: 650'049 (31.4%)
Draws: 614'555 (29.7%)
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
2068038 games played by 2396 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 July 17, 2019 with Bayeselo based on 2'068'038 games
Tested by CCRL team, 2005-2019, http://computerchess.org.uk/ccrl/404/

Rank               Engine                Elo   +    -   Score  AvOp  Games
Booot 6.3.1 64-bit 4CPU            3323  +15  -15  39.8%  +65.2  1456
  Booot 6.2 64-bit 4CPU              3256  +13  -13  42.7%  +56.4  2017
  Booot 6.3.1 64-bit                 3255  +13  -13  46.3%  +24.7  1942
  Booot 6.3 64-bit                   3239  +17  -17  40.6%  +62.7  1050
  Booot 6.1 64-bit 4CPU              3187  +15  -15  43.7%  +44.5  1536
  Booot 6.2 64-bit                   3169   +9   -9  41.1%  +69.0  4783
  Booot 6.1 64-bit                   3085  +13  -13  46.0%  +34.0  2112
  Booot 6.0.2 64-bit                 3040  +15  -15  52.6%  -17.4  1342
  Booot 5.2.0 64-bit                 2922  +11  -11  48.9%   +9.6  3230
  Booot 5.1.0                        2838  +11  -11  48.2%  +14.9  3102
  Booot 5.0                          2784  +15  -15  57.6%  -57.0  1715
  Booot 4.15.1                       2668  +14  -14  48.6%  +13.2  2010
  Booot 4.15.0                       2665  +12  -12  49.8%   +3.3  2442
  Booot 4.14.0                       2611  +21  -21  49.7%   +2.3   758
  Booot 4.13.1                       2564  +13  -13  49.0%   +5.8  2049
  Booot 4.12.1                       2475  +27  -27  42.9%  +50.8   472

Created in 2005-2013 by CCRL team
Last games added on July 17, 2019