While you are certainly familiar with Kakuro, or "cross sums" puzzles, this is certainly the first time you come across Kenkuro puzzles, simply because they have never been published until now Kenkuro follow the same rules as Kakuro, except that you must use all four arithmetic operations: addition, subtraction, division and multiplication. This adds a new dimension to your favorite Kakuro puzzles In this book there are 150 Kakuro and 50 Kenkuro puzzles. Plenty of cross sums for you to figure out and solve