From: Michael Chaly <Vizvezdenec@gmail.com>
Date: Sat, 10 Sep 2022 09:30:25 +0000 (+0300)
Subject: Do less singular extensions for former PVnode
X-Git-Url: https://git.sesse.net/?a=commitdiff_plain;h=1591e5ac3b24f068f965471f17d7aae33ceaab9f;hp=1591e5ac3b24f068f965471f17d7aae33ceaab9f;p=stockfish

Do less singular extensions for former PVnode

Patch is a reintroduction of logic what was simplified a while ago
in a slightly different form. Do bigger extension offset in
case of non-pv node having a pv.

passed STC
https://tests.stockfishchess.org/tests/view/631977c048f27688a06e66d5
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 23296 W: 6404 L: 6108 D: 10784
Ptnml(0-2): 88, 2539, 6118, 2795, 108

passed LTC
https://tests.stockfishchess.org/tests/view/631989cb48f27688a06e696c
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 235592 W: 63890 L: 63188 D: 108514
Ptnml(0-2): 275, 23392, 69804, 24006, 319

closes https://github.com/official-stockfish/Stockfish/pull/4159

Bench: 3993611
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