- Big Book of Sudoku - Medium to Hard - 1000 Puzzles: Huge Bargain Collection of 1000 Puzzles and Solutions, Medium to Hard Level, Tons of Challenge for your Brain!
- Big Book of Sudoku - Easy to Medium - 1000 Puzzles: Huge Bargain Collection of 1000 Puzzles and Solutions, Easy to Medium Level, Tons of Challenge and Fun for your Brain!
- 2500+ Sudoku - Huge Puzzle Book: Mega Jumbo Giant Book of Sudoku Puzzles - The Biggest, Largest, Fattest, Thickest Sudoku Book on Earth - 2500+ Problems - Easy, Medium, Hard and Expert Levels
- Sudoku 600 Puzzles Hard to Expert: Ultimate Challenge Collection of Sudoku Problems with Two Levels of Difficulty to Improve your Game
- Sudoku Large Print 200 Easy to Medium Puzzles: Large Font - Two Puzzles per Page - Easy to Read and Work on - Brain Challenge for Adults and Seniors