Dev Builds » 20190923-0750

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 defa1ccaa9c145b0ccff38a1ae660c052d753e81
Author xoto10
Date 2019-09-23 07:50:34 UTC
Encourage rook lift to third rank This change to the Rook psqt encourages rook lifts to the third rank on the two center files. STC 10+0.1 th 1 : LLR: 2.96 (-2.94,2.94) [0.00,4.00] Total: 40654 W: 9028 L: 8704 D: 22922 LTC 60+0.6 th 1 : LLR: 2.96 (-2.94,2.94) [0.00,4.00] Total: 56963 W: 9530 L: 9196 D: 38237 Thanks to @snicolet for mentioning that Komodo does this a lot and Stockfish doesn't, which gave me the idea for this patch, and to @noobpwnftw for providing cores to fishtest which allowed very quick testing. Future work: perhaps this can be refined somehow to encourage this on other files, my attempts have failed. Closes Bench: 3950249
Copyright 2011–2024 Next Chess Move LLC