CCRL 40/40
Downloads and Statistics
October 19, 2019
Testing summary:
Total: 1'092'341 games
played by 2'556 programs
149261 CPU days (X2 4600+)

White wins: 378'952 (34.7%)
Black wins: 281'710 (25.8%)
Draws: 431'679 (39.5%)
White score: 54.5%

Custom engine selection

Comparing 16 engines!
16 selected engines played 0 games with each other



CCRL 40/40 Rating List - Custom engine selection
1092341 games played by 2556 programs, run by 23 testers
Ponder off, General books (up to 12 moves), 3-4-5 piece EGTB
Time control: Equivalent to 40 moves in 40 minutes on Athlon 64 X2 4600+ (2.4 GHz), about 15 minutes on a modern Intel CPU.
Computed on October 19, 2019 with Bayeselo based on 1'092'341 games
Tested by CCRL team, 2005-2019, http://ccrl.chessdom.com/ccrl/4040/

Rank               Engine                Elo   +    -   Score  AvOp  Games
Cheng 4.39 64-bit 4CPU             3010  +16  -15  50.0%   +0.3  1288
  Cheng4 0.38 64-bit 4CPU            2981  +24  -24  46.0%  +23.7   531
  Cheng 4.39 64-bit                  2922  +11  -11  48.1%  +10.5  2624
  Cheng4 0.36c 64-bit 4CPU           2898  +30  -30  48.8%   +6.1   326
  Cheng4 0.38 64-bit                 2891  +23  -23  50.9%   -5.8   583
  Cheng4 0.36c 64-bit                2799  +18  -18  50.4%   -3.4  1014
  Cheng4 0.36a 64-bit                2748  +30  -30  49.1%   +7.1   370
  Cheng4 0.35a 64-bit                2719  +30  -30  50.7%   -5.6   348
  Cheng3 1.07 64-bit                 2636  +21  -21  46.9%  +19.3   810
  Cheng3 1.07 32-bit                 2630  +26  -26  46.6%  +22.8   517
  Cheng3 1.04 32-bit                 2576  +32  -32  50.2%   -1.7   326
  Cheng3 1.06 32-bit                 2564  +30  -30  47.3%  +15.6   357
  Cheng3 1.05 32-bit                 2560  +32  -32  48.0%  +14.3   324
  Cheng3 1.03 64-bit                 2500  +33  -33  48.0%  +11.5   306
  Cheng3 1.03 32-bit                 2495  +33  -33  50.5%   -5.2   316
  Cheng3 1.02b                       2442  +33  -33  50.2%   -4.3   312

Created in 2005-2013 by CCRL team
Last games added on October 19, 2019