This sudoku puzzle book is the perfect accessory to bring with you on the go. Get your brain firing on your daily commute and test your skills during downtime. This book includes puzzles for every level of experience; work your way through the beginner's easy Sudoku, on to medium, then hard and, if you're game, the truly diabolical. Packed with over 200 Sudoku puzzles and a handy pen that fits compactly within the book itself, you'll always be able to train your deductive-reasoning skills.