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Stockfish 23031407 NNUE for Windows and Linux, compiled by pb00067 (+1,26)



Stockfish 23031407 - UCI chess engine, compiled by pb00067
Rating CEDR=3708

Timestamp: 1679732264
Verified SEE pruning for capturing and checking moves.

Patch analyzes field after SEE exchanges concluded with a recapture by the opponent:
if opponent Queen/Rook/King results under attack after the exchanges, we consider the move sharp and don't prune it.

Important note:
By accident I forgot to adjust 'occupied' when the king takes part in the exchanges.
As result of this a move is considered sharp too, when opponent king apparently can evade check by recapturing. Surprisingly this seems contribute to patch's strength.

STC:
https://tests.stockfishchess.org/tests/view/640b16132644b62c33947397
LLR: 2.96 (-2.94,2.94) <0.00,2.00>
Total: 116400 W: 31239 L: 30817 D: 54344 Elo +1.26
Ptnml(0-2): 350, 12742, 31618, 13116, 374

LTC:
https://tests.stockfishchess.org/tests/view/640c88092644b62c3394c1c5
LLR: 2.95 (-2.94,2.94) <0.50,2.50>
Total: 177600 W: 47988 L: 47421 D: 82191 Elo +1.11
Ptnml(0-2): 62, 16905, 54317, 17436, 80

closes https://github.com/official-stockfish/Stockfish/pull/4453
bench: 5012145

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