% hashiwokakero 3 by Toshio Karino, http://www.janko.at/Raetsel/Hashi/003.a.htm
hashiwokakero
very hard
25 15
.2.....3....4....2......3
3.5...3.3..4.3..3.3...3..
.1..2..6..4...2..1..2..1.
...2.1..1..3.2..3..1.2...
....1.2...3...3...3.3....
..2...................2..
.4.3..2.3.3.3.4.4.4..5.3.
3.1.2..3...3.2...3..3.2.3
.5.6..4.4.4.3.4.3.2..2.3.
..2...................2..
....3.3...2...3...3.2....
...2.1..4..1.2..3..1.2...
.1..3..2..1...2..4..2..2.
..3...2.4..2.3..3.2...3.1
2......3....4....3.....2.
