% heyawake 233 by Mokuani, http://www.janko.at/Raetsel/Heyawake/233.a.htm
heyawake
easy+
10 10
+-+---+-----+-+-----+
|1|...|3....|.|.....|
|.|...|.....|.|.....|
|.|...|.....|.|.....|
|.|...|.....|.+-----+
|.|...|.....|.|.....|
+-+---+-----+.+-+---+
|2....|4....|.|.|...|
|.....|.....+-+-+...|
|.....|.....|3..|...|
|.....|.....|...|...|
|.....|.....|...|...|
+-----+-----+...|...|
|3....|2....|...|...|
|.....|.....|...+---+
|.....|.....|...|2..|
+-----+-+---+---+...|
|.......|...|2..|...|
+-------+...|...+---+
|.......|...|...|...|
+-------+---+---+---+
