Sudoku for Kids Vol.1 SUDOKU HAS ADULTS HOOKED - NOW IT'S THE KIDS' TURN! Carefully designed beginner puzzles for children age 6 years and upwards, with cute DRAGON illustrations. Keep them off technology and into using their brains. 'Easy enough for Success' to 'Difficult enough to be Challenging'. 4x4, 6x6, 9x9 Grids 147 puzzles, handy 6" x 9" size