The goal is to place all the cards in each suit in stacks of ascending rank. Stacks of cards with alternating colors in descending rank can be built in the bottom half of the screen as an intermediate step.
An ace can be moved to its suit stack. (This will usually be done automatically.)
A card at the top of a stack can be moved to its corresponding suit stack if the rank of the card at the top of that stack is one less than the card's rank (Kings have a rank of 13, queens 12, jacks 11 and an ace has a rank of 1).
A king can be moved to an empty space.
A card can be moved from the deck, a suit stack, or a building stack to a source stack if the card at the top of the destination stack has a different color from and a value one more than the card.
Ordered cards at the bottom of a building stack can be moved to another building stack if there is a card in the ordered sequence which has a different color and a rank one less than the card at the top of the destination stack.