Dev Builds » 20180423-0749

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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 c794c8c8016dfdc8360c9d5ab74dffa9d93d9277
Author Stéphane Nicolet
Date 2018-04-23 07:49:05 UTC
Simplify the ShelterStrength[] array Remove the distinction between the king file and the two neighbours files in the ShelterStrength[] array. Instead we initialize the safety variable in the evaluate_shelter() function with a -10 penalty if our king is on a semi-open file (ie. if our king is on a file without a pawn protection). Also rename shelter_storm() to evaluate_shelter() while there. STC: LLR: 2.96 (-2.94,2.94) [-3.00,1.00] Total: 23153 W: 4795 L: 4677 D: 13681 LTC: LLR: 2.95 (-2.94,2.94) [-3.00,1.00] Total: 25728 W: 3934 L: 3821 D: 17973 See the commit history in PR#1559 for the proof that the committed version is equivalent to the version in the tests above: Full credit to @protonspring for the renormalized values of the ShelterStrength[] array used for the simplification. Thanks! Bench: 4703935
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