After SuDoKu there's a new popular puzzle on the market and publishers are on it: Kakuro. A game by Leo Colovini. 2-4 Players make rows on a board, on which they try to place their numbers in a way that the sum of those numbers is the same as a predetermined number. The placing of tiles has to be done by respecting the rules of Kakuro. By using both the Kakuro math-element and player interaction, Kakuro is a game for a broad audience.