Three columns of five cards each form the Tableau. Adjacent pairs (left, right, up, down, or diagonally) whose ranks sum to 13 may be discarded. Kings may be discarded singly.
Cards "fall" down to fill the empty spaces left by discards, leaving spaces at the tops of columns which are then automatically filled from the Stock. When the stock is depleted, empty columns may have their bottom space filled by moving a card from the top of another column.
