Improve your game with this five level book containing 555 Sudoku puzzles suited for beginners and experienced players alike. Five stimulating levels with 6 puzzles per page 150 Easy, 150 Medium, 150 Hard, 75 Very Hard, 30 Expert puzzles Bigger print than most newspapers Wide inner margins so you can easily tear pages out Whether you start at the beginning or jump around, be prepared for a good challenge and hours of addicting fun!