New engine releases & news H1 2026

[ChickenMan4236]

Zeppelin v1.4.0 - Even stronger NNUE, than the previous version

https://github.com/jszczerbinsky/zeppel ... tag/v1.4.0
https://codeberg.org/jszczerbinsky/zepp ... tag/v1.4.0
https://zeppelin.bot.nu/versions

[ChickenMan4236]

Zeppelin v1.4.1
Some minor improvements in move ordering and skipping moves with low SEE in quiescence

https://zeppelin.bot.nu
https://github.com/jszczerbinsky/zeppel ... tag/v1.4.1
https://codeberg.org/jszczerbinsky/zepp ... tag/v1.4.1

[ZlomenyMesic]

Kreveta 2.2.5

https://github.com/ZlomenyMesic/Kreveta ... tag/v2.2.5

[Aleks Peshkov]

Petrel 3.4 (NNUE), Petrel 2.4 (PeSTO)

https://github.com/AleksPeshkov/petrel/ ... s/tag/v3.4
https://github.com/AleksPeshkov/petrel/ ... s/tag/v2.4

Modest strength increase (~30 Elo) but I hope this release is more stable as previous one had several issues.

[Gabor Szots]

Petrel 3.4 (NNUE), Petrel 2.4 (PeSTO)

https://github.com/AleksPeshkov/petrel/ ... s/tag/v3.4
https://github.com/AleksPeshkov/petrel/ ... s/tag/v2.4

Modest strength increase (~30 Elo) but I hope this release is more stable as previous one had several issues.

Alex, please exes for Windows.