Keep your mind active and improve your problem-solving and concentration skills with this great Sudoku puzzle book. An ideal way to help reduce anxiety and stress, promote a healthy mindset. By keeping your mind active you can reduce the risk of Alzheimer's. Over 500 Puzzles - Work your way through the over 500 large print puzzles included in this book. Solutions are included at the back of the book. Suitable For All Skill Levels - A perfect book for all skill levels of Sudoku. The book begins with puzzles at an easy difficulty, and then moves on to the medium, hard, very hard challenging puzzles. Can be used by all age groups including children, teenagers, adults, and seniors. Instructions Included - New to the world of Sudoku? Then fear not as there are instructions at the start at the book to help you on your journey. Encourage a Healthy Brain - Sudoku will always help keep your brain healthy. It contributes to help improve your concentration and thinking skills, reduce anxiety and stress, promote a healthy mindset, develop problem solving skills for kids and adults, and will help improve your memory. Perfect to Give as a Gift - Treat your loved ones and friends with this great Sudoku book, whether it be for Christmas, Easter, Birthdays, Valentine's Day, Summer ot any other holidays, Halloween, Road / Travel Trips, and any other occasions. Specifications:Over 500 Sudoku puzzles with solutions 8.5inch x 11inch sized pages Glossy finish cover for an elegant look and feel