- Sudoku Medium: Future World Activity Book - Sudoku medium difficulty Quiz Books for Beginners Large Print for Adults & Seniors (Sudoku Puzzles Book Large Print Vol.38)
- Sudoku Medium: Future World Activity Book - Sudoku puzzle for memory Sudoku Quest for Adults & Seniors and Sudoku Solver (Sudoku Puzzles Book Large Print Vol.45)
- Sudoku Medium: Future World Activity Book - 50 Medium sudoku books Puzzles and Solutions Large Print Perfect for Seniors (Sudoku Puzzles Book Large Print Vol.44)
- Sudoku Hard: Future World Activity Book - Sudoku Difficult brain health games for Senior, mom, dad Large Print (Sudoku Puzzles Book Large Print Vol.62)
- Sudoku Expert: Sudoku puzzle books for adults Sudoku Difficult brain health games for Senior





























