% hashiwokakero 155 by Otto Janko, http://www.janko.at/Raetsel/Hashi/155.a.htm
hashiwokakero
medium
13 13
.1.2..2.2.4.2
2.3.2..3.2...
...1.3..4.6.3
..4.4..2.....
2..1.3..4...1
..3.2..1..2..
2..2..4.3...2
..5..4.2..3..
2...........2
......1.2.3..
2.6..3.2.1...
...1....2.3.2
1.4.2.2..2.1.
