Any one card may be placed on the four green circle spaces at the left.
On the eight spaces on the bottom, a card may be played on the next highest card of an opposite color. Any card can be played to an empty space.
An ace, and only an ace, can be moved to a Red X space. Once an ace has been played to a Red X space, the next highest card in the suit can be played on top of the ace, until the king has been played.
The objective of the game is to move all cards to the red X spaces.
To move a card, click on it to select it, then click on the place where you want the card to go. If the move is illegal, the card won't move. Only one card can be moved at a time.
Click on a selected card to de-select it.