Dev Builds » 20180215-1838

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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 80ea80e4515e8ed7033ab2a8b22463865fb68979
Author Mike Whiteley
Date 2018-02-15 18:38:09 UTC
Simplify trapped rook As far as can tell, semiopenFiles are set if there is a pawn anywhere on the file. The removed condition would be true even if the pawns were very advanced, which doesn't make sense if we're looking for a trapped rook. Seems the engine fairs better with this removed. My guess s that the condition that mobility is 3 or less does this well enough. Begs the question whether this is a mobility issue alone... not sure. Should I do LTC test? STC LLR: 2.95 (-2.94,2.94) [-3.00,1.00] Total: 13377 W: 3009 L: 2871 D: 7497 Passed LTC LLR: 2.95 (-2.94,2.94) [-3.00,1.00] Total: 16288 W: 2813 L: 2685 D: 10790 Bench: 5006365
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