| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Exercise Puzzles For The Brain: Sudoku Easy To Medium And Number Search Beginner Activity Puzzle Brain Teaser Game Book Large Print Size Black White Color Theme Design Soft Cover | 978-1-0799-9644-9 (1-0799-9644-3) | 2019 |
| Exercise Puzzles For The Brain: Sudoku Medium To Hard And Number Search Activity Puzzle Brain Teaser Game Book Large Print Size Difficult Level White Theme Design Soft Cover | 978-1-0805-7989-1 (1-0805-7989-3) | 2019 |