*-----------*
|...|43.|2..|
|.43|.2.|..7|
|...|..8|6..|
|---+---+---|
|...|.65|.1.|
|.68|...|52.|
|.9.|84.|...|
|---+---+---|
|..6|5..|...|
|3..|.1.|95.|
|..1|.94|...|
*-----------*