Dev Builds » 20190517-1138

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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.


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Commit ID bf6b647a1afd0bfa25ee627622824a3ecb666c5d
Author 31m059
Date 2019-05-17 11:38:23 UTC
Allow RQ through pieces. Bench: 3415326 (#2153) We evaluate defended and unsafe squares for a passed pawn push based on friendly and enemy rooks and queens on the passed pawn's file. Prior to this patch, we further required that these rooks and queens be able to directly attack the passed pawn. However, this restriction appears unnecessary and worth almost exactly 0 Elo at LTC. The simplified code allows rooks and queens to attack/defend the passed pawn through other pieces of either color. STC: LLR: 2.95 (-2.94,2.94) [-3.00,1.00] Total: 29019 W: 6488 L: 6381 D: 16150 LTC: LLR: 2.96 (-2.94,2.94) [-3.00,1.00] Total: 54224 W: 9200 L: 9133 D: 35891 Bench: 3415326
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