% slitherlink 528 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/528.a.htm
slitherlink
hard-
24 14
.32.3.233..0.132.3.2.33.
0......0...3....1..0...2
1.31.3....0..3.3....31.1
..3...3...1..3...3.2.3..
.3.0....0..20.2...21..2.
.....111..1..1..211..3..
2.130...1..1..11...3...3
0...2...01..0..2...120.3
..0..321..2..1..130.....
.3..01...3.11..0....1.0.
..2.1.3...3..3...3...3..
2.21....1.3..3....1.21.2
1...2..3....2...3......0
.20.0.3.023.2..201.3.23.
