Hard Sudoku puzzle books vol. 1: Hard, Very Hard and Extremely Hard Sudoku - Total 300 Sudoku puzzles to solve - Includes solutions (Hard to extreme)
| Country | USA |
| Brand | ORIGINAL ENGINE MANAGEMENT |
| Manufacturer | OEM |
| Binding | Automotive |
| ItemPartNumber | 80002 |
| Model | 80002 |
| Color | Black |
| ReleaseDate | 2014-04-25 |
| UnitCount | 1 |
| UPCs | 841266065415 |
| EANs | 0841266065415 |