Sudoku Puzzle Book, 1,200 Puzzles - 300 Easy, 300 Medium, 300 Hard and 300 Extra Hard: Improve Your Game with This Four Level Book - Paperback

Relieve boredom and stress by playing Sudoku. With four levels of increasing difficulty this economical Sudoku Puzzle Book is designed to gradually improve your game. There are 4 puzzles per page and solutions are at the end of the book.