3rd Book of the Classic Sudoku Puzzles!Sudoku is a logic-based puzzle game that will make you active even at older age. Includes free bonus puzzles;Puzzles for every skill level: Beginner to Expert;66 Easy 78 Medium 55 Hard and 16 Bonus Puzzles;Large Print (Puzzles Font is 20);Easy to Cut Out wider margins make it easyBrain teasing puzzlesInclude Puzzles Solving Techniques