CCRL 40/40 Rating List - Custom engine selection
771905 games played by 2003 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 40 minutes on Athlon 64 X2 4600+ (2.4 GHz), about 15 minutes on a modern Intel CPU.
Computed on December 23, 2017 with Bayeselo based on 771'905 games
Tested by CCRL team, 2005-2017,
http://computerchess.org.uk/ccrl/4040/
Rank Engine Elo + - Score AvOp Games
1 Orion 0.4 64-bit 2446 +29 -30 51.2% -4.9 379
Orion 0.3.0 64-bit 2384 +19 -19 48.9% +8.2 962
Orion 0.2 64-bit 2276 +21 -21 48.3% +12.4 813