This Sudoku Puzzle Book teaches your kids logical thinking, develops their concentration and have a lot of fun at the same time. This book contains 240 classic 4x4 6x6 9x9 Sudoku puzzles, each with one unique solution in the back of the book. Designed especially for 5 to 7 years old kids. And it is a great gift idea for holidays or free time. Features: - 240 Sudoku puzzles for kids -Answers for every sudoku included in back of the book -book size: 8.5 X 11 in -Glossy soft cover Get your sudoku book today and offer your kids the chance to develop amazing logical thinking and improve their memory skills in a fun and entertaining way!