Grandpa's Birthday Sudoku Challenge: Can Grandpa do 50 hard puzzles in 50 days? Hmm...
| Country | USA |
| Brand | Fox Spirit Books |
| Manufacturer | Fox Spirit Books |
| Binding | Paperback |
| PartNumber | Refer to Sapnet. |
| Height | 8.5 |
| Length | 8.5 |
| Weight | 0.8708259349 |
| Width | 0.46 |
| NumberOfItems | 1 |
| ReleaseDate | 0000-00-00 |