% heyawake 231 by Mokuani, http://www.janko.at/Raetsel/Heyawake/231.a.htm
heyawake
easy+
10 10
+-------------------+
|4..................|
+-------+-+-----+---+
|.......|2|2....|...|
|.......|.|.....|...|
|.......|.|.....|...|
|.......|.|.....|...|
|.......|.|.....|...|
+-------+-+-----+---+
|5..................|
+-------+-+-+---+---+
|2......|.|2|3..|...|
+-------+.|.|...|...|
|2......|.|.|...|...|
|.......|.|.|...|...|
|.......|.|.|...|...|
+-------+.|.|...|...|
|0......|.|.|...|...|
+-------+-+-+---+---+
|2..................|
+-------------------+
