Version 8.7.14 is the first and experimental version of J.G.Island Chess Moremovers for Linux (so far it has been released for Windows only on https://jgisland.pl/download/index.html )
It is built on Ubuntu 20.04.4 and tested successfully on newer Ubuntu distributions as well as Mint 20.3+
Please report any issues to jgi_chess_moremovers@gmail.com 
(In case of any missing dependencies, please provide output of ldd command)