Extreme Sudoku: A collection of 200 of the toughest Sudoku puzzles known to man. (With their solutions.)
| Country | USA |
| Brand | Random House Trade Paperbacks |
| Manufacturer | Random House Trade Paperbacks |
| Binding | Paperback |
| ItemPartNumber | 0812982959_used |
| Color | Multicolor |
| ReleaseDate | 2011-10-04 |
| UnitCount | 1 |
| EANs | 9780812982954 |