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 5 engines!
5 selected engines played 0 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
FireFly 2.7.2 64-bit               2253  +14  -14  49.0%   +9.0  1784
  FireFly 2.7.0 64-bit               2208  +14  -14  48.7%  +10.2  1916
  FireFly 2.6.0 64-bit               2181  +18  -18  48.2%  +13.8  1179
  FireFly 2.5.8 64-bit               2134  +16  -16  53.3%  -27.3  1464
  FireFly 2.1.3                      1967  +45  -46  34.6% +128.2   204

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