[mrpelican]

That's an interesting game mode that I hadn't considered, sort of like a move increment in chess. I'll look into that.

Whenever you highlight one or more tiles, ideally you should be able to click outside of the number grid to clear the highlights. Do let me know if that didn't work for you. I think I can call attention to the game play instructions on the website a bit better as well though.

Thanks for the feedback!