Alpha Chess (Version 1.12)

Well done! Going the extra step with all Visual Paths, Check, Checkmate, not possible moves etc.
I found that if the Queen is in the back the hitbox/grapbox is shifted and/or small for the piece but also for the path. Some light up white in the corner

It would make sense if you can promote a pawn to any piece especially the Knight. Also there might be some bugs with detecting checkmate when it's just a check. And it would be nice if the game said checkmate when it is one instead of check.

I think I talked to you awhile back on reddit where you were looking for testers for 2 player mode. Unfortunately, it seems I can't play online games with a guest account. 1 player was really good though.