Sudoku 50-50 Challenge Book #1 Hard: Can you do 50 hard puzzles in 50 days?
| Country | USA |
| Brand | Panoma Press |
| Manufacturer | Panoma Press |
| Binding | Paperback |
| PartNumber | black & white illustrations |
| IsAdultProduct | |
| Height | 7.99 |
| Length | 5 |
| Weight | 0.26014546916 |
| Width | 0.26 |
| ReleaseDate | 2014-07-24 |
| NumberOfItems | 1 |