Calcudoku: 121 Advanced Puzzles (Advanced Calcudoku Puzzles)
| Country | USA |
| Brand | SKMZ |
| Manufacturer | skmz |
| Binding | Tools & Home Improvement |
| ItemPartNumber | coolpen |
| Model | coolpen |
| Color | Clear |
| Size | 82x13x3.23mm |
| UnitCount | 100 |
| UPCs | 778957364765 |
| EANs | 0778957364765 |
| ReleaseDate | 0000-00-00 |