- Sudoku Book 400 Puzzles, 100 Easy, 100 Medium, 100 Hard and 100 Extra Hard: Sudoku Puzzle Book With Four Levels of Difficulty To Improve Your Game
- Sudoku Book 800 Puzzles, 400 Easy and 400 Medium: Sudoku Puzzle Book With Two Levels of Difficulty To Improve Your Game
- Sudoku Book 800 Hard Puzzles: Sudoku Puzzle Book with Only One Level of Difficulty
- Sudoku Book 600 Medium Puzzles: Sudoku Puzzle Book With Only One Level of Difficulty
- Sudoku Book 400 Extra Hard GIANT Puzzles: Sudoku Puzzle Book With One Gigantic Large Print Puzzle Per Page, One Level of Difficulty





























