Extreme Sudoku: A collection of 200 of the toughest Sudoku puzzles known to man. (With their solutions.)
| Country | USA |
| Brand | Gallery Books |
| Manufacturer | Gallery Books |
| Binding | Paperback |
| ItemPartNumber | 9781416587866 |
| ReleaseDate | 2009-08-11 |
| UnitCount | 1 |
| Format | Illustrated |
| EANs | 9781416587866 |