% hashiwokakero 173 by Otto Janko, http://www.janko.at/Raetsel/Hashi/173.a.htm
hashiwokakero
medium-
11 11
2..3..2.4.2
..1.2..1...
...1..2.5.3
2.4.4......
...1.1.2..2
..1.3.2....
2..2.3.3.1.
......2.1.3
2.4.2..4.2.
......1...1
1.4..4.5.3.
