% slitherlink 331 by Hirofumi Fujiwara, http://www.janko.at/Raetsel/Slitherlink/331.a.htm
slitherlink
hard
16 12
..11.32..3..1..1
13.3...231.0...0
..2..23....321..
21.....22.1....1
..3.233....0..21
3.3....1.22..1.0
..3.3.323..1..2.
.12.11...11...0.
23.10.1.3..13.12
........1.1.....
.1.0.11.3...3..3
31.1.3..1.01.13.
