Extreme Sudoku: A collection of 200 of the toughest Sudoku puzzles known to man. (With their solutions.)
| Country | USA |
| Brand | Routledge |
| Manufacturer | Routledge |
| Binding | Paperback |
| ItemPartNumber | 35 black & white illustrations, 7 black |
| ReleaseDate | 2011-02-03 |
| UnitCount | 1 |
| Format | Illustrated |
| EANs | 9780415548151 |
