Dev Builds » 20181014-1815

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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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Commit ID 0370077c375e313cec055c8e52c34f05ae06fdc4
Author Miguel Lahoz
Date 2018-10-14 18:15:16 UTC
Simplify evaluation of blockers_for_king Currently, we have two evaluation terms which account for pinned pieces. One is for all pinned pieces in kingDanger computation and another for just pinned pawns in ThreatByRank. We can increase the relevant bonus for kingDanger calculation and do away with the ThreatByRank, which seems to just add more complexity. STC: LLR: 2.95 (-2.94,2.94) [-3.00,1.00] Total: 113353 W: 24299 L: 24356 D: 64698 LTC: LLR: 2.95 (-2.94,2.94) [-3.00,1.00] Total: 96458 W: 15514 L: 15511 D: 65433 At 100k games, I thought it struggles a bit, but some related [0,4] tests attempting individual tweaks seem to fail: I tried directly tweaking ThreatByRank: @Vizveznedec was also recently trying to tweak the same coeffecients for kingDanger calculation: Bench: 4648095
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