Dev Builds » 20261010-1337

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	885813b0e3d68fb9b817182a813ba884c575ff2c
Author	tony
Date	2026-10-10 13:37:18 UTC
simplify delta-based reductions to constant PvNode discount Removing dependence on delta and rootDelta for LMR calculation. The idea is to reduce unintended side effects like aspiration failures decreasing search effort. Passed non-reg STC https://tests.stockfishchess.org/tests/view/6a9aa810a8284b37a0a047a3 ``` LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 119584 W: 30430 L: 30304 D: 58850 Ptnml(0-2): 211, 14017, 31183, 14197, 184 ``` Passed non-reg LTC https://tests.stockfishchess.org/tests/view/6a9db9d2a8284b37a0a04cb7 ``` LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 32832 W: 8581 L: 8376 D: 15875 Ptnml(0-2): 8, 3428, 9337, 3637, 6 ``` Passed non-reg STC SMP https://tests.stockfishchess.org/tests/view/6ab2a19818e312e5332fdec3 ``` LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 66432 W: 17012 L: 16838 D: 32582 Ptnml(0-2): 43, 7230, 18492, 7412, 39 ``` closes https://github.com/official-stockfish/Stockfish/pull/7148 Bench: 1143550