% heyawake 216 by OX, http://www.janko.at/Raetsel/Heyawake/216.a.htm
heyawake
medium-
18 10
+---+-------+-----+-----+-------+---+
|1..|2......|2....|3....|.......|...|
+---+.......|.....|.....|.......+---+
|2..|.......|.....|.....|.......|...|
|...+---+---+---+-+-+---+---+---+...|
|...|0..|2..|...|2..|...|...|1..|...|
|...|...|...|...|...|...|...|...|...|
|...|...|...|...|...|...|...|...|...|
+---+-+-+---+---+-+-+---+---+-+-+---+
|2....|3....|2....|2....|.....|.....|
|.....|.....|.....|.....|.....|.....|
|.....|.....|.....|.....|.....|.....|
+---+-+-+---+---+-+-+---+---+-+-+---+
|2..|2..|...|...|...|...|2..|1..|3..|
|...|...|...|...|...|...|...|...|...|
|...|...|...|...|...|...|...|...|...|
|...+---+---+---+-+-+---+---+---+...|
|...|.......|.....|0....|2......|...|
+---+.......|.....|.....|.......+---+
|...|.......|.....|.....|.......|...|
+---+-------+-----+-----+-------+---+
