Win
Build the cards from the tableau piles into the "Clock".

Play
The twelve positions around the circle represent the 12 hour clock and the pile in the middle represents the hands.

Play any exposed card to the "Clock", building up in suit from the base card until the card on the top of the pile shows the correct "Hour". When there are no more possible moves, build down among the eight columns regardless of suit. If you create a gap in a column, you can fill it with any available card. Only one card can be moved at a time.