Fun suduko puzzle books for adults: Fill a Sudoku Puzzle, one of the best ways to relax or to spend time, where you can be with this book. Can't get enough of Sudoku? This book is for you! It contains 150 challenging. Enjoy the most popular puzzle game in the world! whether you want to keep your brain young and active, develop logical thinking or just keep yourself busy to avoid boredom... this book will help you with its unique Sudoku Puzzle. What's in this book: 150 Sudoku puzzles: 50 Easy, 50 Medium, and 50 Hard 8.5 x 11 (inches) 21.59cm x 27.94cm 2 Puzzles per page Solutions at the end of the book Perfect as a gift for family