*-----------*
|8.7|...|46.|
|...|4.9|...|
|...|...|239|
|---+---+---|
|.5.|..7|.1.|
|.82|.4.|95.|
|.6.|5..|.2.|
|---+---+---|
|638|...|...|
|...|9.8|...|
|.74|...|5.3|
*-----------*