Catalyst v3.0.0

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AKT[Catalyst]
Posts: 3
Joined: Fri Apr 24, 2026 2:52 pm
Full name: Anany Tanwar

Catalyst v3.0.0

Post by AKT[Catalyst] »

Catalyst v3.0.0
Good afternoon everyone today I have pleasure to announce Catalyst v3.0.0
This update focuses on search and move ordering improvements, along with a rewritten datagen pipeline and improvements to move generation. No changes were made to the NNUE network in this release.

Main changes:

•Improved move ordering (better quiet scoring, SEE-based capture classification)
•Datagen rewrite
•Various bug fixes and refactoring]

Performance:
~+70 Elo vs v2.2.0 (self-play, 10+0.1)

Downloads and source:
https://github.com/AnanyTanwar/Catalyst ... tag/v3.0.0
Frank Quisinsky
Posts: 7523
Joined: Wed Nov 18, 2009 7:16 pm
Location: Gutweiler, Germany
Full name: Frank Quisinsky

Re: Catalyst v3.0.0

Post by Frank Quisinsky »

Hi,

my ESET (NOD) detected a virus.

Could you check that?
I can create an exception, but it's better if that doesn't happen.

Best
Frank

PS: Same for your older two versions I checked.
AKT[Catalyst]
Posts: 3
Joined: Fri Apr 24, 2026 2:52 pm
Full name: Anany Tanwar

Re: Catalyst v3.0.0

Post by AKT[Catalyst] »

Hey Frank

Catalyst is totally safe its open source you can check the code yourself

ESET is just being too sensitive it happens with a lot of chess engines including Stockfish sometimes

The compiler optimizations and the embedded NNUE data can look weird to antivirus programs but its completely normal for engines

Just add Catalyst to the exclusions list or build it from source and you'll be fine

Thanks for checking though
Sorry for the late reply I am not that active in community these days
Frank Quisinsky
Posts: 7523
Joined: Wed Nov 18, 2009 7:16 pm
Location: Gutweiler, Germany
Full name: Frank Quisinsky

Re: Catalyst v3.0.0

Post by Frank Quisinsky »

Hello Anany,

5 out of TOP-270 programmers engines in detail = 1.86% (with installed ESET Security Ultimate).

For the reason that I test all the engines and check that for my engine-overview I have made the configuration for all.
People asked me often (around since 30 years), so the configuration can be also download.

https://www.amateurschach.de/main/_engines.htm

In three of the five cases,
Windows 11 Defender also causes few problems.

I like stats so much!

Yes, the exclusion list solves the problem, of course.

Thanks for your time and ...
your Engine Anany!

Best
Frank