is the perfect puzzle book to help your child sharpen their mental agility, critical thinking, and logical reasoning. With 80 puzzles in and solutions at the back, this puzzle book is . This book can reduce daily stress and anxiety, while providing a positive and creative brain game. What's included: - 80 Sudoku puzzles with solutions at the back - Improve mental agility, critical thinking, and logical reasoning - The potenial to reduce daily stress and anxiety - Large format for ease of use This book is the perfect way to keep your child entertained and engaged during long trips, holidays, and special occasions.