Dev Builds » 20180326-0728

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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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ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN


Commit ID f0f6da2d30fc005fd0fa126ee1eefd11fe10a604
Author Jerry Donald Watson
Date 2018-03-26 07:28:37 UTC
Make kingRing always 8 squares Make kingRing always eight squares, extending the bitboard to the F file if the king is on the H file, and to the C file if the king is on the A file. This may deal with cases where Stockfish (like many other engines) would shift the king around on the back rank like g1h1, not because there is some imminent threat, but because it makes king safety look a little better just because the king ring had a smaller area. STC: LLR: 2.96 (-2.94,2.94) [0.00,5.00] Total: 34000 W: 7167 L: 6877 D: 19956 LTC: LLR: 2.96 (-2.94,2.94) [0.00,5.00] Total: 22574 W: 3576 L: 3370 D: 15628 How to continue from there? This patch probably makes it easier to tune the king safety evaluation, because the new regularity of the king ring size will make the king safety function more continuous. Closes Bench: 5934103
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