*-----------*
|54.|...|8..|
|2..|3..|.94|
|...|..8|..1|
|---+---+---|
|8..|...|.3.|
|...|851|...|
|.9.|...|..5|
|---+---+---|
|3..|7..|...|
|46.|..5|..3|
|..7|...|.69|
*-----------*