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Official Stockfish pre-release: Stockfish dev-20251203 (Windows and MacOS)

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Official prerelease Stockfish dev-20251203
Rating Chess Engines Diary CEDR=3761,3

Great news for chess enthusiasts! 
The pre-release version of Stockfish dev-20251203, widely recognized as the world's top chess engine, has been released. This brings us one step closer to the next official release. Our team is excited to begin testing it today, and we'll be sure to share the results on our website. Stay tuned!

What changes in the new Stockfish dev-20251203 version?

fix missing condition
Fixes a bug in https://github.com/official-stockfish/Stockfish/pull/6453
https://github.com/official-stockfish/Stockfish/commit/abd835dcbc3a28481224f6253b00b7420d062513
The modifications to the DirtyThreats bitboards should only happen if PutPiece is true.
This somehow didn't affect bench at the default parameters.

Reference AVX2:
./stockfish.killdeer-fix.avx2 bench 64 1 23
Nodes searched  : 178140156
Nodes/second    : 1503152

before patch:
./stockfish.master.avx512icl  bench 64 1 23
Nodes searched  : 218349728
Nodes/second    : 1743450

after patch:
./stockfish.killdeer-fix.avx512icl bench 64 1 23
Nodes searched  : 178140156
Nodes/second    : 1727520

passed STC:
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 39328 W: 10293 L: 10080 D: 18955
Ptnml(0-2): 113, 4306, 10629, 4487, 129
https://tests.stockfishchess.org/tests/view/692fb2d8b23dfeae38d01c81
closes https://github.com/official-stockfish/Stockfish/pull/6463
Bench: 2912398

Stockfish dev-20251203 download (all files: stockfish-windows-armv8.exe, stockfish-windows-armv8-dotprod.exe, stockfish-windows-x86-64.exe, stockfish-windows-x86-64-avx2.exe, stockfish-windows-x86-64-avx512.exe, stockfish-windows-x86-64-avx512icl.exe, stockfish-windows-x86-64-avxvnni.exe, stockfish-windows-x86-64-bmi2.exe, stockfish-windows-x86-64-sse41-popcnt.exe, stockfish-windows-x86-64-vnni256.exe, stockfish-windows-x86-64-vnni512.exe  )  mirror 

Here are some sample tournament wins for the Stockfish engine on Android and Windows::



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