Beleaguered Castle Solitaire
Beleaguered Castle Solitaire is not what you could call the easiest variation of solitaire. In the middle we have 4 aces. Left and right of it we see the deck cads mixed up. Our task is to sort them from A,2,3-J,Q,K in the right order. We can apply cards from deck to deck which are 1 number lower than the current one showing up.