Challenge your Kids with 80 hard 16x16 Sudoku puzzles for Kids -middle school. Sudoku's will bring the kids hours of fun and entertainment all while improving their memory, critical thinking, logic and problem solving skills. The Sudoku Puzzles sharpen the memory, increase the concentration, and best remedy for depression. Sudoku is great to have as an activity book for at home and while traveling. All puzzle answers are included in the back of the book. Sudoku is a creative gift ideas for: first day at school, birthday, Parents gift for Kids, Christmas Valentine's Day and many other occasions If you would like to see a sample of book, click on the "Look Inside" feature. This Sudoku book have educational logic puzzles for girl and boy. Product Details: Large size (8,5"x11") Hard 16x16 sudoku puzzles: 80 Includes Solutions 108 pages