Keep your brain young and active with the help of this Sudoku Puzzle Book for Adults. This book contains four levels of difficulty: easy, medium, hard, and very hard. It will provide hours of entertainment and will progressively increase your logical skills.

Features:

- 400 sudoku puzzles (100 Easy, 100 Medium, 100 Hard, 100 Very Hard)

- 9 x 9 sudoku puzzle grids

- 4 sudoku puzzles per page

- Solutions included at the end of the book

- Large size 8.5 x 11 inch

- Glossy cover

- Suitable for both beginners and advanced sudoku players

- Great gift idea for yourself, friends, or anyone who loves sudoku