Black Hole Solitaire

How to Play

Start the game by placing the black hole card at the center of the layout. Surround the black hole with a layout of face-up cards. Transfer cards to the black hole by selecting a card that is one value higher or one value lower than the current top card of the black hole. Keep going this sequence until all cards are transferred to the black hole or no more moves are possible. Use the undo button to reverse your last move if needed. Succeed the game by removing all cards to the black hole. Test yourself by attempting to complete the game in as few moves as possible.