[cactus2093]

This is really cool! I've wondered about exactly this same thing. Showing the valid solutions remaining would be really neat as well, because I'm really not sure how to interpret valid words remaining or when to use my undos in the current implementation. (If it's too computationally intensive, I would think you could memoize it across all users' games and that should make it feasible).

One other suggestion, is maybe the win condition shouldn't be exactly the same as in wordle. Instead of only allowing one game per day but using undos to make it easier, maybe allow 5 attempts per day instead? As a player I think it's simpler to be able to retry from the beginning if I lose rather than try to figure out the optimal time to use my undo.