Dev Builds » 20190104-1323

Use this dev build

NCM plays each Stockfish dev build 20,000 times against Stockfish 14. This yields an approximate Elo difference and establishes confidence in the strength of the dev builds.


Host Duration Avg Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN


Commit ID 3c576efa77f431cf3687881b8fd6a728e87ed97d
Author Marco Costalba
Date 2019-01-04 13:23:14 UTC
Delay castling legality check Delay legality check of castling moves at search time, just before making the move, as is the standard with all the other move types. This should avoid an useless and not trivial legality check when the castling is then not tried later. For instance due to a previous cut-off. The patch is also a big simplification and allows to entirely remove generate_castling() Bench changes due to a different move sequence out of MovePicker. STC: LLR: 2.95 (-2.94,2.94) [-3.00,1.00] Total: 45073 W: 9918 L: 9843 D: 25312 LTC: LLR: 3.15 (-2.94,2.94) [-3.00,1.00] Total: 10156 W: 1707 L: 1560 D: 6889 Verified with perft both in standard and Chess960 cases. Closes Bench: 3559104
Copyright 2011–2024 Next Chess Move LLC