*-----------*
|...|.6.|72.|
|...|852|..1|
|3.5|.7.|6.8|
|---+---+---|
|...|..1|...|
|19.|647|.52|
|...|2..|...|
|---+---+---|
|5.2|.1.|8.6|
|6..|485|...|
|.87|.2.|...|
*-----------*