New engine releases & news H1 2026

Discussion of anything and everything relating to chess playing software and machines.

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Andres Valverde
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Re: New engine releases & news H1 2026

Post by Andres Valverde »

Gabor Szots wrote: Sun Jan 18, 2026 8:19 am
Andres Valverde wrote: Sun Jan 18, 2026 8:04 am EveAnn 1.37 released

https://sites.google.com/view/dirtychess/dirtychess

New book
Time management completely changed
Some LMR tweaks
Minor bugs fixed
It seems it is 3.7. And the zip contains only the NNUE.dll.
Fixed thanks

Google Drive shows only 1 file inside the zip but if you download it all the files are there
Saludos, Andres
Frank Quisinsky
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Re: New engine releases & news H1 2026

Post by Frank Quisinsky »

Leorik 3.2.1
https://github.com/lithander/Leorik/releases/tag/3.2
by Thomas Jan, Germany
Frank Quisinsky
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Re: New engine releases & news H1 2026

Post by Frank Quisinsky »

RuthIron 18.9.9
https://github.com/themreKalkan/RuthIron
by Emre Kalkan, Turkey
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lithander
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Re: New engine releases & news H1 2026

Post by lithander »

Frank Quisinsky wrote: Sun Jan 18, 2026 8:54 am Leorik 3.2.1
https://github.com/lithander/Leorik/releases/tag/3.2
by Thomas Jan, Germany
The new version fixes a bug with the undodumented Temperature UCI option. It makes the engine have random biases towards root moves and is great for selfplay data generation or when you want to limit the playing strength. For everybody maintaining a rating list this version should behave exactly like 3.2!
Minimal Chess (simple, open source, C#) - Youtube & Github
Leorik (competitive, in active development, C#) - Github & Lichess
CJDC
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Re: New engine releases & news H1 2026

Post by CJDC »

Greetings,

Yakka v1.5 released.

Strength gain due to bigger NNUE net and improvements.

https://github.com/CJDalrymple/Yakka

Regards to all.
GyatsoYT
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Re: New engine releases & news H1 2026

Post by GyatsoYT »

Gyatso v1.2.0 is now available.
https://github.com/GyatsoYT/GyatsoChess ... tag/v1.2.0

Estimated strength around ~2700 Elo based on current testing, though further evaluation is appreciated.

— Gyatso
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Andres Valverde
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Re: New engine releases & news H1 2026

Post by Andres Valverde »

Caligula 4.0 released

https://sites.google.com/view/dirtychess/dirtychess

Major change in NN calling management
NN is the same (2.0.1)
Thx to David Carteau (Cerebrum) and Jim Ablett (his complies are included)
Saludos, Andres
ranzuh
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Re: New engine releases & news H1 2026

Post by ranzuh »

Introducing new chess engine from Finland. Ratsu is alpha-beta based 0x88 board engine written in rust. I estimate its strength to be around 1800-1900 Elo CCRL blitz. Author is me, Eetu Rantala. The source code is here: https://github.com/ranzuh/ratsu and the release with binaries is here: https://github.com/ranzuh/ratsu/releases/tag/v0.9.0. It's also playing on lichess at https://lichess.org/@/ratsu-bot