New York Post Train Your Brain Su Doku: Difficult: The Official Puzzle Collection to Improve Concentration and Engage Your Mind
| Country | USA |
| Brand | Simon & Schuster |
| Manufacturer | Simon & Schuster Books for Young Readers |
| Binding | Paperback |
| ReleaseDate | 2013-03-05 |
| UnitCount | 1 |
| EANs | 9781442460010 |