Dev Builds » 20260918-1859

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	9c11e2317a02a87be0e2c0c4347c2a0370561e1c
Author	Michael Chaly
Date	2026-09-18 18:59:44 UTC
Allow razoring to be performed only at allNodes Idea is pretty similar to what we do in null move pruning. Null move pruning is performed only in cutnodes and is a fail high cutoff. Razoring is a fail low cutoff so it makes sense to perform it only at nodes of the opposite type to cutNode - so allNodes. Margin adjusted to produce roughly the same number of cutoffs. Passed STC: https://tests.stockfishchess.org/tests/view/6aa9a826f648bce025258401 LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 102496 W: 26351 L: 25952 D: 50193 Ptnml(0-2): 101, 11855, 26980, 12168, 144 Passed LTC: https://tests.stockfishchess.org/tests/view/6aabc542dbd128aac8fd51e1 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 42672 W: 11154 L: 10833 D: 20685 Ptnml(0-2): 5, 4363, 12283, 4676, 9 closes https://github.com/official-stockfish/Stockfish/pull/7173 Bench: 1452016