Sudoku For Kids (Medium) keeps your kids happy while exercising their minds. This medium level Sudoku game was designed for kids who are ready to solve medium difficulty puzzles but need a little bit of guidance in order to fully enjoy it. The rules and puzzles in this book are designed to help develop the mental skill of arithmetic reasoning, problem solving, and overall smarts in a fun and entertaining way. There are 100 challenging puzzles that will keep even the most avid sudoku solvers occupied for hours! Suitable for children ages 8 and up.