- 150 Hard 16x16 Sudoku Puzzles for True Professionals: Logic Game for Adults - Sudoku Booklet with Solutions
- 150 Medium 16x16 Sudoku Puzzles for Smart Fellows: Perfect as a Gift for Grandma and Grandpa | Puzzle Book incl. Solutions
- 1000 Extremely Hard Sudoku Puzzles for True Professionals: Logic Puzzles | incl. Solutions | Classic Sudoku | Perfect as a Gift for Grandma and Grandpa
- 1000 Mixed Sudoku Puzzles for Smart Minds: Perfect as a Birthday Present | Puzzle Book with Solutions | 9x9
- 1000 Medium Sudoku Puzzles for Experienced puzzlers: also perfect as a Gift for Teenagers, Adults, Grandparents and Seniors | Puzzle Book | incl. Solutions





























