✓ Great gift for family, friends or work colleagues 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 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: ① 1000 Hard Numbrix (10x10) Puzzles. ② Answers to every puzzle are provided. ③ Each puzzle is guaranteed to have only one solution. ④ Includes free bonus puzzles you can download book (Logic Puzzles & Brain Games for Adults) ★★★★★ The Giant Book of Numbrix offers hours of entertainment for adults of all ages, from young adults to seniors ★★★★★