% heyawake 120 by Halflength Sleeve, http://www.janko.at/Raetsel/Heyawake/120.a.htm
heyawake
very hard
36 20
+-------------+---+---+---+-------+-----+-----+---+---------+-------+---+
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+---+-----+---+---+...+---+-+-----+-----+---+-+---+-+-----+-+-+-----+---+
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|.......|...+-----+.....|...+-----+-----+---+-+---+-+-+---+---+.....|...|
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+-------+-+-+---+...|...|.....|...+-----+-----+---+-----+-----+.....+---+
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|.|.....|.....|.....|...|...|.....|.....|.....|...+---+...+-------------+
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|.|.....|.....|.....|...|...+-----+.....|.....|...|...|...+-------------+
|.|.....|.....|.....|...|...|.....|.....|.....|...|...|...|.............|
+-+-----+-----+-----+---+---+-----+-----+-----+---+---+---+-------------+
