Light weight engines

[Damas Clásicas]

Asmfish (Stockfish compiled on Assembler) is a LOT smaller than those you mentioned. Arround 100-126 KB and even less!

What are some lightweight and strong engines? Of course, lightweight and strong are relative terms, so, for reference, consider Crafty 25.6 (435 kB), Altair 5.0.0 (298 kB), Laser 1.8 beta (245 kB), Komodo 14.1 (1.8 MB). Fruit 2.1 (97 kB). Some other engines may have small executables not including their large neural networks. What are some other engines comparable to any of the above engines? For their sizes the above engines are pretty strong. I wish engine ratings had weight categories.

The recent Stockfish 17 is 78 MB. I have difficulty running it under cutechess (but I don't know if it has anything to do with the size).

[shawn]

Asmfish (Stockfish compiled on Assembler) is a LOT smaller than those you mentioned. Arround 100-126 KB and even less!

126kb is small, but I doubt it contains an embedded NNUE network like the offical releases.

[chesskobra]

Asmfish (Stockfish compiled on Assembler) is a LOT smaller than those you mentioned. Arround 100-126 KB and even less!

This is a port of Stockfish 9, isn't it? So it doesn't use NN I believe. Stockfish 11 is also under 1.3 MB.

[chesskobra]

To throw in some elements: My C++ engine weight is about 425KB on mac (and linux dynamic), because dynamic builds are common. On Linux with static linking, it goes up to 2.4MB. The same on windows with the cross compiler is 1.3MB.... All this uncompressed. Older versions were only 160KB. So it all depends on linker options (largely), compiler optimisation settings (for a tiny part), and 8, 32 or 64 bit target (very small impact). The smallest chess program available is less than 1Kb and you get acceptable play below 5KB program sizes.

Thanks for the link.