Begin the game by setting the black hole card at the center of the board. Surround the black hole with a pyramid of face-up cards. Shift cards to the black hole by selecting a card that is the next in sequence or one value lower than the current top card of the black hole. Keep going this sequence until all cards are cleared to the black hole or no more moves are possible. Use the undo button to correct your last move if needed. Succeed the game by removing all cards to the black hole. Challenge yourself by attempting to complete the game in as few moves as possible.