- Sudoku Book 1,000 Puzzles, 500 Hard and 500 Extra Hard: Sudoku Puzzle Book With Two Levels of Difficulty To Improve Your Game
- Sudoku Book 1,500 Medium Puzzles: Sudoku Puzzle Book With Only One Level of Difficulty
- Sudoku Book 200 Hard GIANT Size Puzzles: Sudoku Puzzle Book With One Large Print Gigantic Puzzle Per Page, One Level of Difficulty
- Sudoku Book 400 Medium GIANT Puzzles: Sudoku Puzzle Book With One Gigantic Large Print Puzzle Per Page, 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