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Latest abrok Development Version March 8th  (SF The gift that keeps on giving EmptyThu Oct 31, 2024 3:31 pm by LondonFrau

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»  Update default main net to nn-1cedc0ffeeee.nnue
Latest abrok Development Version March 8th  (SF The gift that keeps on giving EmptyThu Oct 31, 2024 3:31 pm by LondonFrau

» ShashChess 36
Latest abrok Development Version March 8th  (SF The gift that keeps on giving EmptyFri Oct 18, 2024 1:59 pm by theropodes

» Latest abrok Development Version October 4th (SF The gift that keeps on giving
Latest abrok Development Version March 8th  (SF The gift that keeps on giving EmptyFri Oct 04, 2024 2:26 pm by LondonFrau

» Latest abrok Development Version Setpember 17th (SF The gift that keeps on giving
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» Stockfish 17 is available
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Latest abrok Development Version March 8th  (SF The gift that keeps on giving EmptySat Aug 03, 2024 12:58 pm by deeds

» Update default main net to nn-31337bea577c.nnue Latest abrok Development Version July 23 rd (SF The gift that keeps on giving
Latest abrok Development Version March 8th  (SF The gift that keeps on giving EmptyTue Jul 23, 2024 9:04 pm by LondonFrau

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 Latest abrok Development Version March 8th (SF The gift that keeps on giving

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LondonFrau
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Latest abrok Development Version March 8th  (SF The gift that keeps on giving Empty
PostSubject: Latest abrok Development Version March 8th (SF The gift that keeps on giving   Latest abrok Development Version March 8th  (SF The gift that keeps on giving EmptyThu Mar 09, 2023 9:14 pm

!! latest version !!


Windows x64 for Haswell CPUs
Windows x64 for modern computers + AVX2
Windows x64 for modern computers
Windows x64 + SSSE3
Windows x64
Linux x64 for Haswell CPUs
Linux x64 for modern computers + AVX2
Linux x64 for modern computers
Linux x64 + SSSE3
Linux x64
Author: Michael Chaly
Date: Wed Mar 8 07:16:09 2023 +0100
Timestamp: 1678256169

Do more negative extensions

This patch does negatively extend transposition table move if singular search failed and tt value is not bigger than alpha.
Logic is close to what we had before recent simplification of negative extensions but uses or condition instead of and condition.

Passed STC:
https://tests.stockfishchess.org/tests/view/6404c8102644b62c33934607
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 119040 W: 31841 L: 31416 D: 55783 Elo +1.24
Ptnml(0-2): 356, 13070, 32292, 13397, 405

Passed LTC:
https://tests.stockfishchess.org/tests/view/6405abda2644b62c33937119
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 47216 W: 12816 L: 12496 D: 21904 Elo +2.35
Ptnml(0-2): 12, 4500, 14286, 4776, 34

closes https://github.com/official-stockfish/Stockfish/pull/4430

bench 4747020
see source

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