This book contains over 100 Sudoku puzzles of varying sizes and difficulties to get you solving puzzles in no time 138 Sudoku puzzles of varying sizes4x4, 6x6, 9x9, and 10x10 puzzlesdifferent difficulty levelsHere are the amazing benefits of playing Sudoku for your kids: Improves your memory. Memory and logic work side-by-side when you are playing Sudoku. We use our memory to memorize the numbers, when we use our logic to figure out the next blank.Stimulates...