Dev Builds » 20100215-1814

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 7. This yields an approximate Elo difference and establishes confidence in the strength of the dev builds.

Summary

Host	Duration	Avg Base NPS	Games	Wins	Losses	Draws	Elo

Test Detail

ID	Host	Started (UTC)	Duration	Base NPS	Games	Wins	Losses	Draws	Elo	CLI	PGN

Commit

Commit ID	a093f33154cdd7b1d82e41f67fc673d3a22545bc
Author	Joona Kiiski
Date	2010-02-15 18:14:41 UTC
Use zero null move margin when depth < 4 * OnePly This is because when we are below 4 * OnePly, the null move will directly jump to qsearch and if we are below beta, our opponent is above beta and will get immediate stand pat cut off. So basically this patch is just optimizing away useless evaluation calls. dbg_hit_on() runs show that this heuristic is correct >99% of cases. Transposition table probably causes some inaccurary? After 1148 games on QUAD mod-orig: 583 - 565 +5 elo Signed-off-by: Marco Costalba <mcostalba@gmail.com>