% slitherlink 526 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/526.a.htm
slitherlink
medium
18 10
.23.0233..3202.32.
.1..............2.
2.1...0.02.1...3.0
3..3.23....23.1..2
2..1.0..22..1.2..2
2..2.2..12..1.3..3
2..3.23....13.2..2
2.1...1.02.3...0.3
.3..............1.
.02.1233..3102.33.
