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500+ Medium Sudoku Puzzles for Adults: Sudoku Puzzle Books Medium (with answers): Books, Sudoku Puzzle, Books, Adults Activity: 9781979507967: Amazon.com: Books
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Big Book of Sudoku - Easy to Medium - 1000 Puzzles: Huge Bargain Collection of 1000 Puzzles and Solutions, Easy to Medium Level, Tons of Challenge and Fun for your Brain!: Puzzles,
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The Sudoku Puzzle Book: Over 200 Sudoku Puzzles (easy, medium, hard and fiendish): Volume 1: Prefontaine, M: 9781542871600: Amazon.com: Books
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