Easy Sudoku Puzzle Book for Kids Ages 9: Sudoku is a brain game that helps to train the brain of your child. In addition, Sudoku demands attention to detail - noticing patterns, spotting opportunities, and finding the right moment to make a move. A great gift for children's, this books makes a great gift for any occasion! Birthday, road trip, anniversary, christmas, and family celebration. Everyone will love it! This Best Gift Idea For Kids Sudoku For Kids Interior Details - Easy Sudoku Puzzle Books For Kids. - Large Print (8.5x11). - 50 Sudoku Puzzles Collection