% heyawake 228 by Tom Collyer, http://www.janko.at/Raetsel/Heyawake/228.a.htm
heyawake
easy+
10 10
+---+-+-----+-+-+---+
|...|.|3....|.|.|...|
+---+.|.....|.|.|...|
|...|.|.....|.|.|...|
+---+-+-----+-+-+---+
|...|.|.......|.....|
|...+-+-+-----+-----+
|...|...|.....|.....|
+---+---+-+---+.....|
|...|.....|...|.....|
+---+-+---+-+-+---+-+
|.....|.....|.....|.|
+-+---+-+---+-+---+.|
|.|.....|.....|...|.|
+-+---+-+---+-+-+-+-+
|.....|.....|...|...|
+-----+.....|...+---+
|.....|.....|...|...|
|.....+-+---+-+-+...|
|.....|.|...|.|.|...|
+-----+-+---+-+-+---+
