*-----------*
|6.4|..7|..8|
|..1|..8|...|
|...|2..|.4.|
|---+---+---|
|..8|1.3|62.|
|.3.|...|.5.|
|.95|7.6|8..|
|---+---+---|
|.8.|..5|...|
|...|8..|4..|
|4..|6..|7.5|
*-----------*