Dev Builds » 20261025-2012

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.

Use this dev build

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	7347cc2f4e7ec1262f4ee2e4cc164ceacf7326be
Author	mike-vel
Date	2026-10-25 20:12:46 UTC
Simplify the optimism evaluation It simplifies optimism evaluation and improves precision. Passed non-regression STC: https://tests.stockfishchess.org/tests/view/6ada618b733e627f7058d2a9 LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 40672 W: 10411 L: 10202 D: 20059 Ptnml(0-2): 37, 4746, 10580, 4917, 56 Passed non-regression LTC: https://tests.stockfishchess.org/tests/view/6adb76af733e627f7058d394 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 63192 W: 16397 L: 16224 D: 30571 Ptnml(0-2): 14, 6583, 18224, 6766, 9 closes https://github.com/official-stockfish/Stockfish/pull/7258 Bench: 2719250