% heyawake 140 by Halflength Sleeve, http://www.janko.at/Raetsel/Heyawake/140.a.htm
heyawake
very hard
36 20
+---+---------+---+-----+---+-----+-----+---+---------+---+---+-----+---+
|3..|3........|...|.....|3..|8....|.....|2..|2........|2..|...|.....|0..|
|...+-----+---+...|.....|...|.....|.....|...+---+-----+...|...+-----+...|
|...|.....|...|...|.....|...|.....|.....|...|...|0....|...|...|.....|...|
|...|.....|...|...+-----+...|.....|.....|...|...|.....|...|...|.....+---+
|...|.....|...|...|.....|...|.....|.....|...|...|.....|...|...|.....|3..|
|...+-----+...|...+-----+---+.....+-----+---+...+-----+...|...+-----+...|
|...|0....|...|...|5....|...|.....|3........|...|.....|...|...|5....|...|
|...|.....|...|...|.....|...|.....+---+---+-+---+.....|...|...|.....|...|
|...|.....|...|...|.....|...|.....|0..|...|3....|.....|...|...|.....|...|
+---+-+---+...|...|.....|...|.....|...|...|.....+-----+---+...|.....|...|
|3..|.|...|...|...|.....|...|.....|...|...|.....|1....|2..|...|.....|...|
|...|.|...|...+---+---+-+---+.....|...|...|.....|.....|...|...+-----+---+
|...|.|...|...|3......|.....|.....|...|...|.....|.....|...|...|3....|...|
|...|.|...|...|.......|.....|.....+---+---+---+-+-----+...|...|.....|...|
|...|.|...|...|.......|.....|.....|...|1..|...|1......|...|...|.....|...|
|...|.+---+---+-------+-+-+-+-----+...|...|...+-------+---+...|.....|...|
|...|.|.......|4........|3|4......|...|...|...|.......|3..|...|.....|...|
+---+.|.......|.........|.|.......|...+---+...|.......|...+---+-----+---+
|...|.|.......|.........|.|.......|...|2..|...|.......|...|...|0....|2..|
|...+-+---+---+---------+.|.......|...|...|...+-------+...|...|.....|...|
|...|0....|...|4........|.|.......|...|...|...|.......|...|...|.....|...|
+---+.....|...|.........|.+---+---+...|...+---+.......+-+-+---+-----+...|
|...|.....|...|.........|.|2..|...|...|...|0..|.......|.|3....|.....|...|
|...+-+---+...|.........|.|...|...+---+---+...|.......|.|.....|.....+---+
|...|.|...|...|.........|.|...|...|.......|...|.......|.|.....|.....|...|
|...|.|...|...+-------+-+-+---+---+.......|...|.......|.|.....+-----+...|
|...|.|...|...|4......|2..........|.......|...|.......|.|.....|.....|...|
|...|.|...|...|.......+-----+-----+---+-+-+---+---+-+-+-+-+---+.....|...|
|...|.|...|...|.......|3....|4....|...|2|5........|.|0....|...|.....|...|
|...|.|...|...|.......|.....|.....|...|.|.........|.|.....|...+-----+---+
|...|.|...|...|.......|.....|.....|...|.|.........|.|.....|...|5....|0..|
+---+-+-+-+---+-----+-+.....|.....|...|.|.........+-+-----+...|.....|...|
|3......|2....|.....|.|.....|.....|...|.|.........|2|.....|...|.....|...|
|.......|.....|.....|.|.....+-----+...|.+---------+.|.....|...|.....|...|
|.......|.....|.....|.|.....|3....|...|.|.........|.|.....|...|.....|...|
+-------+-----+-----+-+-----+.....+---+-+---------+.+-----+---+-----+---+
|2......|3....|2....|2......|.....|2....|3........|.|1....|1..|.....|2..|
|.......|.....|.....|.......|.....|.....|.........|.|.....|...|.....|...|
|.......|.....|.....|.......|.....|.....|.........|.|.....|...|.....|...|
+-------+-----+-----+-------+-----+-----+---------+-+-----+---+-----+---+
