*-----------*
|.76|...|...|
|54.|...|3.6|
|.1.|..4|.25|
|---+---+---|
|...|45.|..3|
|..5|9.3|4..|
|1..|.76|...|
|---+---+---|
|75.|3..|.8.|
|6.3|...|.51|
|...|...|73.|
*-----------*