*-----------*
|76.|.9.|...|
|28.|175|...|
|.4.|..6|...|
|---+---+---|
|329|...|..5|
|...|.3.|...|
|6..|...|839|
|---+---+---|
|...|7..|.1.|
|...|651|.97|
|...|.2.|.43|
*-----------*