% slitherlink 478 by Hobbit's Room, http://www.janko.at/Raetsel/Slitherlink/478.a.htm
slitherlink
medium-
10 10
1.122.33.1
..........
2..3.3...1
1....3.3.0
..30.....1
3.....10..
1.3.0....3
2...1.0..3
..........
3.20.112.1
