Sudoku Book for Adults and Seniors with 3 Levels of Difficulty: 402 Puzzles & Solutions, Easy to Hard (The Perfect Gift for Puzzle Lovers) (Gifts for Men & Women) Publishing, Rody
Sudoku Book for Adults – Large Print: Sudoku Puzzle Book with Solutions – The Perfect Challenge for All Skill Levels Kimokotoo, Publishing
Train Your Brain Logic Games and Puzzles Activity Book for Teens: 130+ brain teasers including sudoku, cryptograms, crosswords, wordsearch, riddles and more Publishing, Smiling Turtle
The Ultimate Logic Puzzle Book For Kids Ages 8 – 11: Screen-Free Entertainment with Brain Teasers and Logic Challenges to Improve Focus and Boost Your Child’s Confidence through Problem Solving Lulu The Unicorn, Publishing