Dev Builds » 20180513-0520

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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 bf01bd07551dd4e2d68d82b305cc5d89a4c23bb0
Author Stéphane Nicolet
Date 2018-05-13 05:20:39 UTC
Tweak kingAttackersCount and KingAttackWeights Use the whole kingRing for pawn attackers instead of only the squares directly around the king. This tends to give quite a lot more kingAttackersCount, so to compensate and to avoid raising the king danger too fast we lower the values in the KingAttackWeights array a little bit. STC: LLR: 2.95 (-2.94,2.94) [0.00,4.00] Total: 51892 W: 10723 L: 10369 D: 30800 LTC: LLR: 2.96 (-2.94,2.94) [0.00,4.00] Total: 24536 W: 3737 L: 3515 D: 17284 Credits to user @xoroshiro for the idea of using the kingRing for pawn attackers. How to continue? It seems that the KingAttackWeights[] array stores values which are quite Elo-sensitive, yet they have not been tuned with SPSA recently. There might be easy Elo points to get there. Closes Bench: 5282815
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