Extreme Sudoku: A collection of 200 of the toughest Sudoku puzzles known to man. (With their solutions.)
| Country | USA |
| Brand | DK |
| Manufacturer | DK |
| Binding | Hardcover |
| ItemPartNumber | Illustrations, unspecified |
| Color | Brown |
| ReleaseDate | 2018-09-25 |
| UnitCount | 1 |
| EANs | 9781465478795 |