CCRL 40/40
Downloads and Statistics
December 7, 2019
Testing summary:
Total: 1'104'002 games
played by 2'573 programs
150928 CPU days (X2 4600+)

White wins: 382'601 (34.7%)
Black wins: 284'129 (25.7%)
Draws: 437'272 (39.6%)
White score: 54.5%

Custom engine selection

Comparing 7 engines!
7 selected engines played 30 games with each other



CCRL 40/40 Rating List - Custom engine selection
1104002 games played by 2573 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 CPU.
Computed on December 7, 2019 with Bayeselo based on 1'104'002 games
Tested by CCRL team, 2005-2019, http://ccrl.chessdom.com/ccrl/4040/

Rank               Engine                Elo   +    -   Score  AvOp  Games
Octochess r5506 64-bit 4CPU        2888  +21  -21  44.5%  +35.8   715
  Octochess r5190 64-bit 4CPU        2823  +24  -24  45.9%  +23.8   555
  Octochess r5506 64-bit             2783  +15  -15  48.7%   +6.9  1350
  Octochess r5190 64-bit             2772  +15  -15  48.7%   +7.9  1521
  Octochess r5132 64-bit             2729  +31  -31  51.1%   -7.4   313
  Octochess r4984 64-bit             2723  +31  -31  49.7%   +4.3   324
  Octochess r4741 64-bit             2697  +32  -32  51.1%   -4.7   308

Created in 2005-2013 by CCRL team
Last games added on December 7, 2019