Famous Frog Sudoku 600 Extra Hard Puzzles With Solutions: An Extra Hard Series Book (Famous Frog Extra Hard Series)
| Country | USA |
| Brand | The History Press |
| Manufacturer | The History Press |
| Binding | Paperback |
| ReleaseDate | 2012-08-21 |
| UnitCount | 1 |
| EANs | 9781609495497 |