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Title: Activity Book for Adults, Vol II: Mazes, Mine Finder, Nurikabe, Kakuro, Sudoku, 180 Puzzles to Solve, Great for Adults and Seniors, Logic Brain Games, Author: Brainiac Press
Title: 1000 Sudoku Puzzles for Adults: Sudokus Games for Adults, Very Easy to Hard Levels with Solutions, Large Sudoku Book for Adults with Downloadable Copies, Author: Aria Capri Publishing
Title: Sudoku Puzzle Book for Adults Teens & Seniors: 300 Medium Puzzles: 6 Puzzles Per Page, Author: Romelka Press
Title: 1000+ Sudoku Puzzles by Kaplan Crypto Wind Edition Easy, Medium, and Hard Levels: A fun, challenging way to spend your free time, Author: Omer Ugur
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Title: SUDOKU WELL HARD: 200 LARGE FORMAT Puzzles:Boost your critical thinking and pattern recognition to the next level with HARD SUDUKO puzzles!, Author: Puzzlebrook
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Title: Challenging TripleCross Puzzles: Volume 1, Author: Neil Aggarwal
Title: Challenging Cross Figure Puzzles: Volume 2, Author: Neil Aggarwal
Title: Hexadoku Series 6 - Puzzle Book for Adults - Easy - 100 puzzles - Large Print - Book 1, Author: Nelson Flowers
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Title: Sudoku Series 20 Pocket Edition - Puzzle Book for Adults - Very Easy - 50 puzzles - Large Print - Book 4 (Russia), Author: Nelson Flowers

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