Black Hole

Goal: play all fifty-one fan cards into the black hole.

• The Ace of Spades starts in the hole. Play the exposed end card of any fan onto it if that card is one rank up or down from the hole's top card.
• Suit does not matter, and rank wraps: an Ace and a King are adjacent, so either can follow the other.
• Cards never leave the hole, and a fan is never a drop target — every move is one-way.
• There is no stock and no redeal. When no fan's end card fits, the game is lost.