From: lonfom169 <50217346+lonfom169@users.noreply.github.com>
Date: Mon, 9 Nov 2020 02:43:32 +0000 (-0300)
Subject: Increase reduction based on the number of best move changes.
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=b5781150ea8557e2030f8bc8b4eadede0ecec6bd;hp=b5781150ea8557e2030f8bc8b4eadede0ecec6bd

Increase reduction based on the number of best move changes.

Thanks to Vizvezdenec for the PvNode idea and also to vondele the !PvNode idea.

Passed STC:
LLR: 2.94 (-2.94,2.94) {-0.25,1.25}
Total: 19120 W: 1998 L: 1839 D: 15283
Ptnml(0-2): 76, 1445, 6375, 1572, 92
https://tests.stockfishchess.org/tests/view/5fa8af3e67cbf42301d6a6c9

Passed LTC:
LLR: 2.94 (-2.94,2.94) {0.25,1.25}
Total: 75584 W: 3454 L: 3205 D: 68925
Ptnml(0-2): 54, 2832, 31771, 3081, 54

closes https://github.com/official-stockfish/Stockfish/pull/3224

Bench: 3595418
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