Extreme Sudoku: A collection of 200 of the toughest Sudoku puzzles known to man. (With their solutions.)
| Country | USA |
| Brand | Bantam |
| Manufacturer | Bantam |
| Binding | Mass Market Paperback |
| ItemPartNumber | 0553593072_used |
| Color | Black |
| ReleaseDate | 2011-10-18 |
| UnitCount | 1 |
| EANs | 9780553593075 |