]> git.sesse.net Git - stockfish/commit - src/search.cpp
Add double bonus for prior countermove fail low
authorMuzhen Gaming <61100393+XInTheDark@users.noreply.github.com>
Sat, 24 Dec 2022 05:05:24 +0000 (13:05 +0800)
committerJoost VandeVondele <Joost.VandeVondele@gmail.com>
Sat, 24 Dec 2022 15:01:50 +0000 (16:01 +0100)
commit64656f8583dde88d558d5367b4cf8fc136c3214a
tree24d05f71dda8b566d3e04674ee27479e908515b2
parentb2bd8699eccc149cdda1f7bf6e1eed42088ec827
Add double bonus for prior countermove fail low

Add a double extra bonus for particularly bad fail low cases. Original idea by Yoshie2000.

STC: https://tests.stockfishchess.org/tests/view/63a2f0d86b5bf07ac7fad543
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 146488 W: 38992 L: 38532 D: 68964
Ptnml(0-2): 385, 16036, 39965, 16450, 408

LTC: https://tests.stockfishchess.org/tests/view/63a3eaeb6b5bf07ac7fafdec
LLR: 2.95 (-2.94,2.94) <0.50,2.50>
Total: 103992 W: 27853 L: 27423 D: 48716
Ptnml(0-2): 41, 10029, 31435, 10441, 50

closes https://github.com/official-stockfish/Stockfish/pull/4302

Bench: 3801857
AUTHORS
src/search.cpp