Amazon.com: Sudoku 555 Puzzles Easy to Expert: Easy, Medium, Hard, Very Hard, and Expert Level Sudoku Puzzle Book For Adults (Puzzles & Games for Adults): 9781951791018: Nest, Game: Books
Amazon.com: Brain Games - Large Print Sudoku Puzzles (Green): 9781640304598: Publications International Ltd., Brain Games: Books
Amazon.com: Brain Games - Sudoku #2: 9781605531748: Publications International Ltd., Brain Games: Books
Amazon.com: Brain Games - Relax and Solve: Sudoku (Blue): 9781640304628: Publications International Ltd., Brain Games: Books
400 Easy Sudoku-X Puzzles Volume 2: Like Sudoku? Then you will love these 400 Easy Sudoku-X puzzles (Sudoku-X Very Easy): Copson, Linda, Mcevoy, C A: 9781976013386: Amazon.com: Books
Sudoku and Word Search Puzzles for Adults Vol 2: Crazy, Puzzle: 9781682806470: Amazon.com: Books
Sudoku Puzzle Book Variations: Nine Different Challenging Sudoku Styles For Advanced Players (Variations Series): Master, Sudoku Puzzle: 9781086744910: Amazon.com: Books
Amazon.com: Brain Games - Sudoku (Chalkboard #1): Exercise Your Mind in Minutes (Volume 1): 9781640306622: Publications International Ltd., Brain Games: Books