% hashiwokakero 276 by Otto Janko, http://www.janko.at/Raetsel/Hashi/276.a.htm
hashiwokakero
medium-
13 13
.1..2..2.3..3
2.3..3.....2.
.2.....4.5...
3.4.4.......2
.3...5.4.6.4.
3.2.3.......2
.3.3.7.6.6.4.
2.......1.2.3
...5.5.....2.
.2.....5..4.3
2..6.4.....1.
.1.....3..3.2
2..4.3..2..1.
