You can temporarily put any card in the Space called "free cell" in the upper left. When red and black cards are placed in an alternative order, you can move the total number of cards obtained by adding vacant free cells plus 1 at the same time. Ex.1: If two free cells are vacant, you can move three cards, and if four free cells are vacant, you can move five cards at the same time. Ex.2: If all the four free cells are occupied, you can move only one card. Once you move all the cards in an ascending order (A,2,3...J,Q,K), the game is cleared.