*-----------*
|...|69.|.23|
|.43|...|1..|
|..5|...|.9.|
|---+---+---|
|.71|..9|...|
|...|3.8|...|
|...|7..|61.|
|---+---+---|
|.1.|...|9..|
|..2|...|74.|
|43.|.27|...|
*-----------*