| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Secret Formula For Solving Sudoku Puzzles: Become An Expert Sudoku Solver With These Easy To Learn Sudoku Tricks On Solving Sudoku Puzzles So You Can Play Sudoku With Very Little Effort | 978-1-4565-2958-1 (1-4565-2958-7) | 2011 |