i love this conceptually, but most game states are unsolvable. i'd suggest that when none of the center slots are occupied, the player should be able to move any number of cards across the river
I agree some warning on impossible game states would be nice, but I suspect that is a lot of work. As for the move limit, I think its interesting and adds to the difficulty. I just wish it was clearer that you cant move over the river because you have too many cards in your stack.
