Taken from this source.
Enjoy,
Oscar
P.S. I should have added the text format when I originally posted the puzzle. Correcting ...
- Code: Select all
*-----------*
|...|.4.|...|
|...|9.5|...|
|..7|...|6..|
|---+---+---|
|.6.|...|.3.|
|4..|...|..9|
|.2.|...|.8.|
|---+---+---|
|.4.|597|.6.|
|.3.|4.8|.7.|
|.1.|2.3|.9.|
*-----------*