CCRL 40/40
Downloads and Statistics
December 10, 2019
Testing summary:
Total: 1'104'091 games
played by 2'573 programs
150964 CPU days (X2 4600+)

White wins: 382'628 (34.7%)
Black wins: 284'145 (25.7%)
Draws: 437'318 (39.6%)
White score: 54.5%

Custom engine selection

Comparing 4 engines!
4 selected engines played 0 games with each other



CCRL 40/40 Rating List - Custom engine selection
1104091 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 10, 2019 with Bayeselo based on 1'104'091 games
Tested by CCRL team, 2005-2019, http://ccrl.chessdom.com/ccrl/4040/

Rank               Engine                Elo   +    -   Score  AvOp  Games
Simplex 0.9.8 64-bit               2399  +17  -17  47.3%  +17.9  1226
  Simplex 0.9.8 32-bit               2397  +30  -30  49.0%   +5.0   359
  Simplex 0.9.7 32-bit               2323  +31  -31  48.6%   +9.5   370
  Simplex 0.9.3 32-bit               2163  +33  -34  48.9%   +9.0   315

Created in 2005-2013 by CCRL team
Last games added on December 10, 2019