% slitherlink 87 by Hirofumi Fujiwara, http://www.janko.at/Raetsel/Slitherlink/087.a.htm
slitherlink
hard-
16 12
3..1.3...1..33.1
...2.22.2.3..1..
132...1.1.0..32.
.1.3.....1.3..1.
3.....313.1....3
....1..1.23213.3
03.110..........
....3.3.13..1.21
.3..1.....3122..
...1.33.22......
3.2.1...1.2.0.33
..3.3..13...3..1
