% slitherlink 333 by Hirofumi Fujiwara, http://www.janko.at/Raetsel/Slitherlink/333.a.htm
slitherlink
very hard
16 12
..21.321...1.1.2
1..32....0.1..2.
131...3..3.2...2
.....1.3.....13.
21.11.1.1.10.1.2
31.2..22.2.1.3..
2.3..1..2.3.2.1.
.2...23.0......3
12.1.0.1.3.3.21.
..22.3......1...
31.....1..2...03
..321.3.33.12...
