Big Book of Sudoku - Hard to Expert - 1000 Puzzles: Huge Collection of 1000 Puzzles and Solutions, Hard to Professional Level, Tons of Challenge for your Brain!: Puzzles, BeeBoo: 9798608217456: Amazon.com: Books
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Hard Sudoku Pro: Book for Experienced Puzzlers (200 puzzles) Vol. 57: Dalipi, Arbëresh: 9781976510601: Amazon.com: Books
Aloha! 555 Awesome Killer Sudoku Puzzles Volume 10: A Big Treasury of Logic Games, with Instructions and Solutions, from Beginner to Pro, to Practice your Mind, to Train your Brain: Saika, Ms.:
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200 SUDOKU LEICHT-MITTEL-SCHWER GROSSER DRUCK EIN SUDOKU PRO SEITE (German Edition): Design, TOTO: 9781075534980: Amazon.com: Books
Puzzles for the Pro | Sudoku Expert: Senor Sudoku: 9781645214533: Amazon.com: Books
Pro Sudoku 16x16 - Very Easy to Expert: 100 Large-Print Puzzles with Solutions: Drinkard, Martin Tyler: 9798362749200: Amazon.com: Books
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Sudoku Variations Puzzle Book for Adults - 300+ Hard Puzzles: Center Dot, Consecutive, Even-odd, Hoshi, 12x12 Jigsaw, Butterfly, Outside, Flower and Samurai Sudoku for Hours of Fun: Publishing, Puzzler Pro: 9798391653837: Amazon.com:
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Pro Sudoku Puzzles #1: 50 Ultimate Challenge Sudoku Puzzles: Books, Little Cat: 9781523629510: Amazon.com: Books