% slitherlink 463 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/463.a.htm
slitherlink
medium-
10 10
0...12...3
..21..30..
.2......2.
.3.2..2.2.
1...30...1
2...31...2
.3.3..0.3.
.3......3.
..31..32..
1...01...2
