🔍 LMR: clamp history reductions to [-1,1]

lynx-chess / Lynx

Chess Engine, written in C#

https://lichess.org/@/Lynx_BOT

MIT License

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🔍 LMR: clamp history reductions to [-1,1] #971

Closed eduherminio closed 1 month ago

eduherminio commented 2 months ago

Test  | search/history-lmr-clamped
Elo   | 0.63 +- 1.89 (95%)
SPRT  | 8.0+0.08s Threads=1 Hash=32MB
LLR   | -0.78 (-2.25, 2.89) [0.00, 3.00]
Games | 56908: +16070 -15967 =24871
Penta | [1456, 6573, 12318, 6626, 1481]
https://openbench.lynx-chess.com/test/692/