Official Stockfish pre-release: Stockfish dev-20250824

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Official prerelease Stockfish dev-20250824
Rating Chess Engines Diary CEDR=3763

Great news for chess enthusiasts! 
The pre-release version of Stockfish dev-20250824, 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-20250824 version?

Simplify LMR Extensions

Passed Non-regression STC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 236896 W: 61683 L: 61683 D: 113530
Ptnml(0-2): 730, 28057, 60901, 28003, 757
https://tests.stockfishchess.org/tests/view/68a9c20475da51a345a5a6a0

Passed Non-regression LTC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 73644 W: 18936 L: 18770 D: 35938
Ptnml(0-2): 33, 7951, 20685, 8123, 30
https://tests.stockfishchess.org/tests/view/68aa95c575da51a345a5a88a

closes https://github.com/official-stockfish/Stockfish/pull/6265
Bench:  2693376

Stockfish dev-20250824 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  )

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





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