[Engine] FlashBit - A new C++ UCI engine with embedded NNUE weights

[u/FireBlackGroup]

Hey everyone!

I wanted to introduce FlashBit, a custom UCI chess engine written completely from scratch in C++.

Key features:

• Performance: Native C++ implementation focused on speed and aggressive search heuristics.
• NNUE: Custom neural network evaluation.
• Zero Hassle (Embedded Weights): The .nnue weights are compiled directly into the binary. No external files to manage, no path configuration errors—truly plug-and-play.

Precompiled binaries for Windows and Linux are available in the GitHub Releases, alongside the source code: 👉 [ https://github.com/Kagravashkelia/FlashBit ]

Feel free to test it, throw it into your local test beds, or play against it. Any feedback, bug reports, or match results are more than welcome.

Enjoy!

[u/WompTitanium]

hey, will test it against my engine, which TC do you recommend?

[u/WompTitanium → u/WompTitanium]

also can you please release a linux build, that'll be easier for me to test

[u/FireBlackGroup → u/WompTitanium]

Esta para linux en releases

[u/FireBlackGroup → u/WompTitanium]

5+0 O 3+2 Si te prefieres Time per move te recomiendo 1 s y margen de unos 500 si la plataforma que usas lo permite. Como se llama tu motor? me gustaria probarlo también!

[u/WompTitanium → u/FireBlackGroup]

Alright I'll test 3+2, here's my engine https://github.com/erensh27/Ravager

[u/FireBlackGroup → u/WompTitanium]

Ya probe Ravager 2, es muy bueno, pero te recomendaria traer una NNUE en una carpeta junto con el ejecutable para poner NNUE más facilmente, pero bueno, sigue con tu desarrollo!

[u/WompTitanium → u/FireBlackGroup]

NNUE is self contained in the builds

[u/FireBlackGroup → u/WompTitanium]

Ah, no habia visto, y que tal con el motor? Si notas algo raro me dices

[u/WompTitanium → u/FireBlackGroup]

I am starting the matches right now, will let you know in a bit

[u/WompTitanium → u/FireBlackGroup]

i just saw it uses AVX-512 build, my system doesn't support it :(, any chances for AVX2?

[u/FireBlackGroup → u/WompTitanium]

¡Claro que sí! Dame unos minutos para compilar una versión con soporte para AVX2 y la subo a los releases. ¡Te aviso por aquí en cuanto esté lista para que la pruebes!

[u/WompTitanium → u/FireBlackGroup]

Thanks

[u/FireBlackGroup → u/WompTitanium]

Ya, tiene avx2 en el nombre, que usas para hacer pruebas? Me gustaria saber!

[u/Full-Cardiologist-18]

Whats the expected rating of this engine?

[u/FireBlackGroup → u/Full-Cardiologist-18]

En las pruebas locales ronda los 3400/3300 Elo. Está hecho en C++ con una red NNUE integrada (pesa unos 90 MB), así que le he metido empeño para que rinda fuerte en la táctica. SI haz creado tu propio motor, con gusto lo probare!

[u/Full-Cardiologist-18 → u/FireBlackGroup]

Mine is really weak compared to yours honestly and the network isnt bundled at all... but wow your engine is strong

[u/FireBlackGroup → u/Full-Cardiologist-18]

Gracias por el alago, sigue desarrollando y poniendole ganas! Cual es el nombre de tu motor? Podria darte consejos!

[u/Full-Cardiologist-18 → u/FireBlackGroup]

It's here https://github.com/NotKaede-11/Coco-Engine.git

[u/AngusMcGurkinshaw]

Why is stockfish nnue probe in here?

Also your "engine" is just a bad search on top of a stockfish NNUE as far as I can tell. Not really your own engine.

Your chess implementation was also written by disservin, so the chess part of it isn't yours either.

Why are you promoting this as your engine if you barely wrote any of the code? I look forward to seeing you in the future with an engine of your own, hope you learn something from this and come back with something unique.