Sudoku 120 16x16 medium puzzles: A challenging Sudoku variation brain training in a handy pocket sized paperback book: Addicts, Puzzle: 9798693300354: Amazon.com: Books
100 Hard 4x4 Sudoku Puzzles for Kids: Mini Sudoku Puzzle for Children / Ages 4-6 / Large Print / Handy Size / Winter Theme: Sharpened Pencil Press: 9781695537026: Amazon.com: Books
Sudoku: 1,000 Medium Puzzles: Handy Sudoku Series Book: Handy, Tom: 9781534980822: Amazon.com: Books
100 Hard 4x4 Sudoku Puzzles for Kids: Mini Sudoku Puzzle for Children / Ages 4-6 / Large Print / Handy Size / Fox Cover: Sharpened Pencil Press: 9781695539778: Amazon.com: Books
Sudoku 120 16x16 medium puzzles: A challenging Sudoku variation brain training in a handy pocket sized paperback book: Addicts, Puzzle: 9798693300354: Amazon.com: Books
Jigsaw Sudoku Pocket Rocket- 100 Medium Pocket Size Jigsaw Sudoku Puzzles - Volume 4: Handy 4 x 6 inch layout – 1 Puzzle per Page (Medium Jigsaw Sudoku Pocket Rocket): Demarco, Christian: 9781792778612: Amazon.com: Books
Sudoku 500 Hard Puzzles With Solutions: A Handy Sudoku Series Book: Handy, Tom: 9781536828023: Amazon.com: Books
LARGE PRINT SUDOKU: 200+ Medium Sudoku Puzzles, Volume 1 (Medium Sudoku Puzzles for Adults): Eddy, Clever: 9781913712464: Amazon.com: Books
NO FRILLS SUDOKU HARD #1: 60 Hard Sudoku Puzzles & Answers in a Handy 5 x 8-inch size: Designs, TT77: 9781689585439: Amazon.com: Books
200 Sudoku Extreme puzzles with solutions: Arguably tougher than killer sudoku with 2 to a page puzzles in a handy, pocket sized book: Birch, Kevin, Addicts, Puzzle: 9781073723423: Amazon.com: Books
Travel Sudoku Book 1: Large Print Handy Puzzle Collection with an Enjoyable Mix of Easy, Medium and Hard Games - Perfect for Vacations (Tropical Island Cover): Freedom Sudoku, Freedom Bell: 9781980931027: Amazon.com: Books
Sudoku Pocket Rocket- 100 Hard Pocket Size Sudoku Puzzles - Volume 1: Handy 4 x 6 inch layout – 1 Puzzle per Page (Hard Sudoku Pocket Rocket): Demarco, Christian: 9781791980696: Amazon.com: Books
Hard 6x6 Sudoku Puzzles for Kids: 100 Mini Sudoku Puzzle for Children / Ages 6-9 / Large Print / Handy Size: Sharpened Pencil Press: 9781072871309: Amazon.com: Books
Sudoku 200 X-Hard Giant Size Puzzles: Biggest 9 X 9 One Per Page Puzzles Ever! A Mighty Handy Giant Series Book: Handy, Tom: 9781535423991: Amazon.com: Books
Sudoku 320 Puzzles With Solutions: 9x9 Sudoku puzzle suitable for all ages | Challenge yourself or simply use as brain training | Difficulty level ... (Sudoku 320 Puzzles With Solutions: Advanced): Bean, Steven: 9798505303481: Amazon.com: Books
200 more medium but challenging puzzles Alphadoku - Sudoku with a difference!: Medium difficulty, brain training puzzles to the max in a handy, pocket sized format: Birch, Kevin, Addicts, Puzzle: 9798666042328: Amazon.com: Books