% heyawake 258 by Mokuani, http://www.janko.at/Raetsel/Heyawake/258.a.htm
heyawake
medium-
10 10
+---+-------+-------+
|2..|4......|5......|
|...|.......|.......|
|...|.......|.......|
|...|.......|.......|
|...|.......|.......|
+---+-+-----+-------+
|2....|1....|2......|
|.....|.....|.......|
|.....|.....|.......|
+-----+-+---+-+-----+
|4......|.....|2....|
|.......|.....|.....|
|.......|.....|.....|
+-------+-----+-+---+
|4......|4......|...|
|.......|.......|...|
|.......|.......|...|
|.......|.......|...|
|.......|.......|...|
+-------+-------+---+
