% hashiwokakero 154 by Otto Janko, http://www.janko.at/Raetsel/Hashi/154.a.htm
hashiwokakero
medium-
13 13
2..2..2.2.2.2
..1..5.4.2.1.
3..2....1.2.3
.....6.6.2...
3.1.....2..3.
.3.5.5.6..2..
2...1.......2
...1.3.6.4.3.
.3..3.1...1.2
2..1.2.4.....
.5..4.1..2..2
1....1.4..1..
.3..4.3..2..2
