Dev Builds » 20261017-1124

You are viewing an old NCM Stockfish dev build test. You may find the most recent dev build tests using Stockfish 15 as the baseline here.

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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.

Summary

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

Commit ID	b877fbde5985f57d07dd137085f366588f36a717
Author	Linmiao Xu
Date	2026-10-17 11:24:48 UTC
Optimize FullThreats LUTs and incremental index updates Fold offsets into PieceType-indexed u16 lut2 table in a single ThreatLUTs struct to reduce FullThreats::make_index table lookups. Small speedup measured: ``` Result of 10 runs (x86-64-avx512icl, speedtest 1 16 32) ======================================================== base (base_5c4cef0b ) = 1307427 +/- 25215 test (test_febee374 ) = 1314690 +/- 24522 diff = +7263 +/- 5730 speedup = +0.0056 (+0.56%) P(speedup > 0) = 0.9934 ``` Passed non-regression STC: https://tests.stockfishchess.org/tests/view/6acd6e4b733e627f7058bea7 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 98784 W: 25285 L: 25145 D: 48354 Ptnml(0-2): 123, 10386, 28243, 10508, 132 closes https://github.com/official-stockfish/Stockfish/pull/7230 No functional change