Kakuro is a logic puzzle from Japan. It's based on an empty grid with some helpful clues. The aim is to use the clues to fill the grid with all the missing numbers. Each book contains 100 puzzles of all shapes and sizes. Plus, keys on each page list the magical Kakuro Blocks to help you crack the secrets of every grid. Your training begins at the easy White Belt level and builds in difficulty until you become a powerful Kakuro Black Belt. Each case contains 6 pieces of each of the two titles. Ages 8 and up. 12pcs per case.