OpenChess

Homayoun wrote: Thu Feb 13, 2025 10:20 pm Author: FauziAkram
Date: Thu Feb 13 20:18:35 2025 +0100
Timestamp: 1739474315

FutilityValue formula tweak

Passed STC:
LLR: 2.95 (-2.94,2.94) <0.00,2.00>
Total: 29600 W: 7979 L: 7662 D: 13959 Elo +3.72
Ptnml(0-2): 138, 3446, 7324, 3745, 147
https://tests.stockfishchess.org/tests/ ... fd14d7e7da

Passed LTC:
LLR: 2.95 (-2.94,2.94) <0.50,2.50>
Total: 49662 W: 12850 L: 12502 D: 24310 Elo +2.43
Ptnml(0-2): 41, 5354, 13689, 5710, 37
https://tests.stockfishchess.org/tests/ ... fd14d7e81d

closes https://github.com/official-stockfish/S ... /pull/5879

Bench: 2581469

https://abrok.eu/stockfish/

Thanks to Fauzi and Homayoun!

Best regards Sedat.

Author: FauziAkram
Date: Mon Feb 24 19:16:26 2025 +0100
Timestamp: 1740420986

Simplify bestvalue update formula

Passed STC:
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 124960 W: 32598 L: 32472 D: 59890 Elo +0.35
Ptnml(0-2): 480, 14852, 31694, 14970, 484
https://tests.stockfishchess.org/tests/ ... 114cdba37d

Passed LTC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 150306 W: 38220 L: 38132 D: 73954 Elo +0.20
Ptnml(0-2): 98, 16430, 42005, 16526, 94
https://tests.stockfishchess.org/tests/ ... 24a7a3f751

closes https://github.com/official-stockfish/S ... /pull/5898

Bench: 2146010

https://abrok.eu/stockfish/

Author: xu-shawn
Date: Fri Feb 28 09:50:59 2025 +0100
Timestamp: 1740732659

Revert "Replace aligned() function with line_bb() and simplify king piece detection" (#5915)

closes https://github.com/official-stockfish/S ... /pull/5915

No functional change

Co-authored-by: Robert Nürnberg <>

https://abrok.eu/stockfish/

Thanks a lot to Homayoun and SF team!

Best regards, Sedat.

Author: mstembera
Date: Fri Mar 21 11:22:59 2025 +0100
Timestamp: 1742552579

Change layout of CorrectionHistory<NonPawn>

https://tests.stockfishchess.org/tests/ ... 5cc372a9d2
LLR: 2.95 (-2.94,2.94) <0.00,2.00>
Total: 150368 W: 38874 L: 38401 D: 73093 Elo +1.09
Ptnml(0-2): 424, 16821, 40262, 17212, 465

Make CorrectionHistory\<NonPawn\> handle both black and white
internally. A follow up to
https://github.com/official-stockfish/S ... /pull/5816

closes https://github.com/official-stockfish/S ... /pull/5934

No functional change

https://abrok.eu/stockfish/

Author: Disservin
Date: Sat Mar 29 11:55:55 2025 +0100
Timestamp: 1743245755

Silence "may be used uninitialized" GCC warning

Helps gcc silence the warning about

```
warning: 'added' may be used uninitialized [-Wmaybe-uninitialized]
const IndexType offsetA0 = TransformedFeatureDimensions * added[0];
```

closes https://github.com/official-stockfish/S ... /pull/5950

No functional change


https://abrok.eu/stockfish/

Stockfish 17.1

Official release version of Stockfish 17.1
https://stockfishchess.org/download/

Many thanks