Aleksey52 wrote: ↑Fri Feb 20, 2026 9:38 pm
Hello dear Jim. I registered here to say thank you very much for your valuable work compiling chess engines!
I am fond of collecting engines for Android and sometimes play mini-matches of 10 games between two selected engines in the Chess Tactics & Strategy program.
Thanks to two great people, Jim Ablett and Archimedes, we can test a lot of chess engines that the developers themselves mostly don't want or don't know how to compile for everyone.
Thank you dear Jim! I wish you success in everything and good health!
SlonoSlonar wrote: ↑Thu Feb 19, 2026 11:41 pm
Until now, no one else (including the author of the engine) can compile variants from the SSE and AVX-1 instructions.
Well, maybe because the author doesn't want anyone to be using his engine on those older architectures ? And I doubt it is just a compile thing, Jim probably has to change some code to compile it for that target architecture.
Jim simply decided to release only release versions of the most powerful modern engines, and he does it beautifully. As for the author, he either doesn't know how or doesn't want to bother with the old SSE and AVX-1 processor instructions; more likely, he doesn't. Furthermore, there's a license agreement that doesn't prohibit compilation with source code (like Stockfish).
Yes agreed, the licences usually don't prohibit compiling for the old architectures accompanied by the source code including any changes that were necessary to do so. The authors normally aren't interested I guess because NNUE performs relatively poorly on those platforms.