I actually like how challenging it is. There are two bugs though.
One I'm not sure really how to describe. Sometimes, seemingly randomly, when you pick up a card and place it back at the same spot, it phases through the card it's supposed to sit on, which makes it no longer interactable with. Undoing doesn't fix it, since it doesn't count as a new action. Unfortunately this usually completely ruins the current round.
The other, as others have mentioned, is that the win counter always resets. Would be great if fixed, thanks!
Another request is to be able to undo multiple times, or have the ability to restart the same seed.