Dev Builds » 20180814-0812

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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 881cab252530c8711e942f7936a3eb41b2956a6b
Author Stéphane Nicolet
Date 2018-08-14 08:12:31 UTC
Double weight of capture history We double in this patch the weight of the capture history table in the local scoring of captures for move ordering. The capture history table is indexed by the triplet (capturing piece, capture square, captured piece) and gets information like "it seems to have been historically good in that part of the search tree to capture a pawn with a rook on g3, even if it seems to lose material", and affect the normaly pure « Most Valuable Victim » ordering of captures. Finished yellow at STC after 228842 games (posting a +1.36 Elo gain): LLR: -2.95 (-2.94,2.94) [0.00,4.00] Total: 228842 W: 50894 L: 50152 D: 127796 Passed LTC: LLR: 2.96 (-2.94,2.94) [0.00,4.00] Total: 43251 W: 7425 L: 7131 D: 28695 Thanks to user Vizvezdenec for running the LTC test. Closes Bench: 4272361
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