From: SFisGOD <jonathandumale@gmail.com>
Date: Wed, 23 Sep 2020 06:00:42 +0000 (+0800)
Subject: Switch to NNUE eval probabilistically for OCB
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=f66c381f11b8603e2449b200227c8cfd7382b3ba;hp=f66c381f11b8603e2449b200227c8cfd7382b3ba;ds=sidebyside

Switch to NNUE eval probabilistically for OCB

Introduce a small chance of switching to NNUE if PSQ imbalance is large but we have opposite colored bishops and the classical eval is struggling to win.

STC:
LLR: 2.94 (-2.94,2.94) {-0.25,1.25}
Total: 25304 W: 3179 L: 2983 D: 19142
Ptnml(0-2): 172, 2171, 7781, 2345, 183
https://tests.stockfishchess.org/tests/view/5f6b14dec7759d4ee307cfe3

LTC:
LLR: 2.94 (-2.94,2.94) {0.25,1.25}
Total: 84680 W: 4846 L: 4556 D: 75278
Ptnml(0-2): 89, 3933, 34011, 4213, 94
https://tests.stockfishchess.org/tests/view/5f6b3fb6c7759d4ee307cff9

closes https://github.com/official-stockfish/Stockfish/pull/3146

Bench: 3865413
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