% heyawake 237 by Mokuani, http://www.janko.at/Raetsel/Heyawake/237.a.htm
heyawake
easy+
10 10
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|4|3......|4........|
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|.+-------+-----+---+
|.|a............|...|
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|.+-------+-----+...|
|.|4......|4....|...|
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