Do negative extensions on expected cut nodes

PGG106 / Alexandria

bitboard chess engine

GNU General Public License v3.0

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Do negative extensions on expected cut nodes #310

Closed cj5716 closed 10 months ago

cj5716 commented 10 months ago

Same logic as https://github.com/official-stockfish/Stockfish/commit/e551964ef63e4e4af4bb6132538b98fad4a51afe

ELO   | 3.59 +- 2.66 (95%)
SPRT  | 8.0+0.08s Threads=1 Hash=16MB
LLR   | 2.95 (-2.25, 2.89) [0.00, 3.00]
GAMES | N: 31264 W: 7653 L: 7330 D: 16281
https://chess.swehosting.se/test/5349/