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1/16 more singular margin. Bench 3888674

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Stefan Geschwentner
Stefan Geschwentner committed May 13, 2019
1 parent c181747 commit c3c606789fcd19575537aba8af8c246255681949
Showing with 1 addition and 1 deletion.
  1. +1 −1 src/search.cpp
@@ -904,7 +904,7 @@ namespace {
&& tte->depth() >= depth - 3 * ONE_PLY
&& pos.legal(move))
{
Value singularBeta = ttValue - 15 * depth / (16 * ONE_PLY);
Value singularBeta = ttValue - 17 * depth / (16 * ONE_PLY);
Depth halfDepth = depth / (2 * ONE_PLY) * ONE_PLY; // ONE_PLY invariant
ss->excludedMove = move;
value = search<NonPV>(pos, ss, singularBeta - 1, singularBeta, halfDepth, cutNode);

5 comments on commit c3c6067

@Vizvezdenec

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replied May 13, 2019

I guess this can be counted as a parameter tweak (?)

@Vizvezdenec

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replied May 13, 2019

actually it's not 1/16 (?)
we have 2 in master and you have 15/16 or 17/16 instead :)

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replied May 13, 2019

@locutus2 pls check this one, you will probably want to rerun this tests with smth like 15/8 and 17/8 :)

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replied May 13, 2019

@Vizvezdenec
Thanks, you are correct! It was a long day and my brain hurts!

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replied May 13, 2019

@locutus2 it's okay, everyone makes mistakes, I'm an expert in making them :D

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