Sudoku Puzzle Book, 600 EXTRA HARD Puzzles: Single Difficulty Level For No Wasted Puzzles - Paperback

by Sudoku Puzzle Books (Author)

Relieve boredom and stress by playing Sudoku. This single level sudoku puzzle book contains plenty of puzzles to keep you busy for many hours. There are 4 puzzles per page and solutions are at the end of the book.