Games: PGN
Test setup: details
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CCRL 40/40 Rating List - Custom engine selection
927336 games played by 2270 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 40 minutes on Athlon 64 X2 4600+ (2.4 GHz),
about 15 minutes on a modern Intel CPU.
Computed on November 18, 2018 with Bayeselo based on 927'336 games
Tested by CCRL team, 2005-2018, http://computerchess.org.uk/ccrl/4040/
Engine Elo + - Score AvOp Games
Donna 4.1 64-bit 2616 +22 -22 49.0% +5.6 767
Donna 4.0 64-bit 2605 +15 -15 50.3% -2.3 1430