Extreme Sudoku: A collection of 200 of the toughest Sudoku puzzles known to man. (With their solutions.)
| Country | USA |
| Brand | Mariner |
| Manufacturer | Mariner Books |
| Binding | Paperback |
| ItemPartNumber | unknown |
| ReleaseDate | 2015-10-06 |
| UnitCount | 1 |
| EANs | 9780544340053 |