% hashiwokakero 344 by Otto Janko, http://www.janko.at/Raetsel/Hashi/344.a.htm
hashiwokakero
medium-
12 12
..2..5.3..2.
3...1.1.2..1
.......2..1.
4.3..3..4..4
.2.3...4....
........4.4.
4.3..2.3...2
.2.3..2.3.3.
4.1....3.1.4
.3.6.2..4.3.
.......2...2
3..3..3.2.1.
