Normal sudoku rules apply. 1 is treated as a poker ace. A greater-than symbol joining two cages indicates which cage is the higher-ranking hand in poker. Digits MAY repeat in a cage but cards may not repeat in a cage (but they may repeat in the grid). Eg a cage may not contain two cells with the 3 of hearts , but there may be two cells in the grid that both contain the 3 of hearts . Treat the cards and values exactly as you would in a game of poker. For example, an ace (1) ranks higher than any other card, but can be used as part of the lowest-ranking straight or straight flush: 12345. On the other hand, 6789A is not a straight.