1st Book of the Classic Sudoku Puzzles! Sudoku is a logic-based puzzle game that will make you active even at an older age.1. Puzzles for every skill level: Beginner to Expert;2. 50 Easy, 50 Medium, 50 Hard, and 50 Extremely Bonus Puzzles;3. Large Print (Puzzles Font is 20);4. Easy to Cut Out, wider margins make it easy;5. Brain teasing puzzles;6. Include Puzzles Solving Techniques.

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