Absolutely NastyŽ Sudoku Level 3
, by Longo, Frank- ISBN: 9781454968924 | 1454968923
- Cover: Paperback
- Copyright: 3/24/2026
The difficulty level soars, as even more tricks get added to the mix: X-Wing; Swordfish; XY-Wing; XYZ-Wing; and the Gordonian Rectangle.



