- The Must Have 2015 Sudoku Puzzle Book: 365 Puzzle Daily Sudoku to Challenge You Every Day of the Year. 365 Sudoku Puzzles - 5 Difficulty Levels
- The Gigantic Sudoku Puzzle Book. 1500 Puzzles. Easy Through Challenging to Nail Biting and Torturous. Largest Printed Sudoku Puzzle Book Ever.: All the Puzzles Are Guaranteed to Have Only One Solution
- The Must Have 2012 Sudoku Puzzle Book: 366 Sudoku Puzzle Games to challenge you every day of the year. Randomly distributed and ranked from quick through nasty to cruel and deadly! Killer Sudoku
- 15 Minute Speed Sudoku - 175 hard sudoku puzzles.: sudoku,puzzle,hard,difficult,gift
- Sudokids.com Sudoku Puzzles for Children Ages 4-8: Every child can do it. For teaching kids at home or at school.