Sudoku 1,000 Puzzles, 500 Hard and 500 Extra Hard: Keep Your Brain Active For Hours With This Sudoku Puzzle Book (Active Brain Series 2)
| Country | USA |
| Brand | Independently Published |
| Manufacturer | Independently published |
| Binding | Paperback |
| EANs | 9781097550104 |
| ReleaseDate | 0000-00-00 |