Extreme Sudoku: A collection of 200 of the toughest Sudoku puzzles known to man. (With their solutions.)
| Country | USA |
| Brand | Thames & Hudson |
| Manufacturer | Thames & Hudson |
| Binding | Hardcover |
| ItemPartNumber | 311 Illustrations, color |
| ReleaseDate | 2019-10-15 |
| UnitCount | 1 |
| EANs | 9780500021507 |