Dev Builds » 20180429-0526

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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 213166ba225bcefbbe7dbecdacfd726dfb6c34f9
Author Stefano80
Date 2018-04-29 05:26:25 UTC
Always scale using pawn contribution This is a further step in the long quest for a simple way of determining scale factors for the endgame. Here we remove the artificial restriction in evaluate_scale_factor() based on endgame score. Also SCALE_FACTOR_ONEPAWN can be simplified away. The latter is a small non functional simplification with respect to the version that was testedin the framework, verified on bench with depth 22 for good measure. Passed STC LLR: 2.95 (-2.94,2.94) [-3.00,1.00] Total: 49438 W: 9999 L: 9930 D: 29509 Passed LTC LLR: 2.96 (-2.94,2.94) [-3.00,1.00] Total: 101445 W: 15113 L: 15110 D: 71222 How to continue from there? Maybe the general case could be scaled with pawns from both colors without losing Elo. If that is the case, then this could be merged somehow with the scaling in evaluate_initiative(), which also uses a additive malus down when the number of pawns in the position goes down. Closes Bench: 5254862
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