Numbrix is a logic puzzle with simple rules and challenging solutions. It is played on a rectangular grid of squares. Some of the cells have numbers in them. The rules of Numbrix are simple: fill in the missing numbers, in sequential order, going horizontally and vertically only. Diagonal paths are not allowed. This Logic Puzzles book is packed with the following features: - 500 Numbrix (10x10) Puzzles from Easy to Hard. - Answers to every puzzle are provided. - Each puzzle is guaranteed to have only one solution. Includes free bonus puzzles you can download book ( Tons of Sudoku Puzzles for Adults & Seniors ) Includes free bonus puzzles you can download book ( Word Search With Hidden Message: 102 Puzzles for Adults and Seniors)