Dev Builds » 20181014-1819

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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 cb0111d3db923ec43b39f47973f7457da2b2e6c0
Author Guenther Demetz
Date 2018-10-14 18:19:46 UTC
Correctly track down pv even in fail-high case Currently we update (track up) the pv even in the fail high case. However most times in such cases the pv in the ply below remains unset because there we have value == alpha and so finally we see truncated pv's (=just one move) in fail high cases. Of course tracking down these pv's (+sending them to the gui) comes at a certian cost, but no-regression tests passed: STC: LLR: 2.96 (-2.94,2.94) [-3.00,1.00] Total: 16300 W: 3556 L: 3424 D: 9320 LTC: LLR: 2.96 (-2.94,2.94) [-3.00,1.00] Total: 202411 W: 32734 L: 32897 D: 136780 N.B.: Digging also into qsearch was tried in another version but seemed not to pass the tests. This means that we don't always will get a pv until the very tips. No functional change
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