% heyawake 164 by Halflength Sleeve, http://www.janko.at/Raetsel/Heyawake/164.a.htm
heyawake
medium-
18 10
+-----+---+---+-----+-----+-+-----+-+
|2....|...|2..|.....|3....|2|1....|.|
|.....+---+...|.....|.....|.+-----+.|
|.....|2..|...|.....|.....|.|1....|.|
|.....|...+---+-+---+-+---+.|.....|.|
|.....|...|.....|1..|.|...|.|.....|.|
+-----+...|.....|...|.|...|.+-----+.|
|3....|...|.....|...|.|...|.|.....|.|
|.....+---+.....|...|.|...|.|.....|.|
|.....|2..|.....|...|.|...|.|.....|.|
|.....|...+---+-+---+-+---+-+-----+-+
|.....|...|2..|1....|6..............|
+-----+---+...|.....|...............|
|2....|2..|...|.....|...............|
+-----+...+---+---+-+-----+---------+
|.....|...|2..|...|4......|2........|
|.....|...|...|...|.......+-----+---+
|.....|...|...|...|.......|0....|2..|
+-----+---+...|...|.......|.....|...|
|2........|...|...|.......|.....|...|
+---------+---+---+-------+-----+---+
