% slitherlink 401 by Daniel Adams, http://www.janko.at/Raetsel/Slitherlink/401.a.htm
slitherlink
hard-
15 15
.2..3..2...1...
.1.3.0.311...30
..1...1...3.1..
3..121..0..2.1.
..1...1..0.2..2
.3..0..2...0.3.
.1.0...0....0..
13...03.32...21
..2....2...0.2.
.3.2...1..0..2.
2..0.0..1...3..
.2.2..0..112..1
..1.2...3...1..
33...323.1.1.2.
...0...2..0..2.
