% heyawake 16 by ?, http://www.janko.at/Raetsel/Heyawake/016.a.htm
heyawake
easy+
10 10
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+---+---+---+-+-+---+
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+---+.+-+---+.|.+---+
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+---+.|.+---+-+.+---+
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+---+-+-+---+---+---+
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+---+---+---+---+---+
