I've looked at this multiple different ways and I'm convinced the rules are wonky, its broken, or there is some secret that is going over my head.
Is the puzzle correct? Do the rules differ from normal puzzle (square)?
Yes, the puzzle is correct. The game is similar to its square version, but you're (probably) missing something: there are three symbols to help, in the image!
Posted by 
on 2023-04-14 15:19:31 
Posted by 
on 2023-04-16 13:07:06