Black Hole Solitaire

How to Play

Begin the game by placing the black hole card at the center of the board. Arrange the black hole with an arrangement of face-up cards. Move cards to the black hole by clicking on a card that is one rank above or one rank below 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. Employ the undo button to reverse your last move if needed. Complete the game by clearing all cards to the black hole. Test yourself by striving to complete the game in as few moves as possible.