% heyawake 248 by Mokuani, http://www.janko.at/Raetsel/Heyawake/248.a.htm
heyawake
easy+
10 10
+-----+---------+---+
|4....|.........|2..|
|.....+-----+---+...|
|.....|3....|...|...|
|.....|.....|...|...|
|.....|.....|...|...|
+-----+-+---+-+-+---+
|.......|.....|4....|
|.......+-----+.....|
|.......|3....|.....|
+-+-----+.....|.....|
|.|4....|.....|.....|
|.|.....|.....+-+---+
|.|.....|.....|.|...|
|.|.....+-+---+-+...|
|.|.....|.|3....|...|
+-+-----+.|.....+---+
|1......|.|.....|2..|
|.......|.|.....|...|
|.......|.|.....|...|
+-------+-+-----+---+
