Dev Builds » 20200107-1000

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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 83ecfa7c33ab3e89fcbc506f0f4d5312baa26aeb
Author Alain SAVARD
Date 2020-01-07 10:00:54 UTC
Use a faster implementation of Static Exchange Evaluation SEE (Static Exchange Evaluation) is a critical component, so we might indulge some tricks to make it faster. Another pull request #2469 showed some speedup by removing templates, this version uses Ronald de Man (@syzygy1) SEE implementation which also unrolls the for loop by suppressing the min_attacker() helper function and exits as soon as the last swap is conclusive. See Ronald de Man version there: Patch testes against pull request #2469: LLR: 2.95 (-2.94,2.94) {-1.00,3.00} Total: 19365 W: 3771 L: 3634 D: 11960 Ptnml(0-2): 241, 1984, 5099, 2092, 255 And since we are using new SPRT statistics, and that both pull requests finished with less than 20000 games I also tested against master as a speed-up: LLR: 2.99 (-2.94,2.94) {-1.00,3.00} Total: 18878 W: 3674 L: 3539 D: 11665 Ptnml(0-2): 193, 1999, 4966, 2019, 250 Non functional change
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