I’ve been looking into some classical problems in prolog recently and stumbled upon the 8queens problem in this SWISH notebook: https://swish.swi-prolog.org/example/clpfd_queens.pl.
The problem is that I can’t apparently access the clpfd library from SWISH and, while that seems strange to me since I found the example in a SWISH notebook, i can’t find any way to solve the issue.
EDIT: i hosted locally SWISH and obviously solved the sandbox issue.
I followed these instructions: https://github.com/SWI-Prolog/swish/blob/master/README.md
Works like a dream