% slitherlink 97 by Hirofumi Fujiwara, http://www.janko.at/Raetsel/Slitherlink/097.a.htm
slitherlink
hard
20 15
.12...3.1.3..3..3..3
.1..3......3.3...1..
123..2.313.3.2...231
.......32....3..31..
3...3.1..312..1..0.3
.1.3..12.1....3..22.
0...13..212..12...3.
..1.2.13.........1..
2...3...2.1212..3...
3.2..13...2.1.3..3.2
...3.1.12..3....21.1
.2.3..31..211.3..1.1
30.11.3.....2...31..
..3..2..2.2..31....2
.21.11...1..32..23.3
