% hashiwokakero 263 by Otto Janko, http://www.janko.at/Raetsel/Hashi/263.a.htm
hashiwokakero
medium-
13 13
.1.2..3.3.3.3
2.2.3..3.4.1.
.2.3..1......
..1.2..3.6..3
2..2.........
..2.4.5..6.4.
2...........2
.3.4..5.1..3.
.......1.4...
2..4.3......2
......4..5.4.
.3.5.6.3..1.1
2.2.2.2.2..2.
