% heyawake 239 by Mokuani, http://www.janko.at/Raetsel/Heyawake/239.a.htm
heyawake
easy+
10 10
+---------+---+-----+
|3........|1..|.....|
|.........|...+-----+
|.........|...|3....|
+---+---+-+---+.....|
|3..|...|2|...|.....|
|...|...|.|...+-----+
|...|...|.|...|.....|
|...|...|.|...+-----+
|...|...|.|...|2....|
+---+---+-+---+-----+
|...|4........|3....|
|...|.........|.....|
|...|.........|.....|
+---+---+-+---+.....|
|2..|...|2|...|.....|
|...|...|.|...+-----+
|...|...|.|...|2....|
+---+...|.|...|.....|
|...|...|.|...|.....|
+---+---+-+---+-----+
