% slitherlink 315 by Hirofumi Fujiwara, http://www.janko.at/Raetsel/Slitherlink/315.a.htm
slitherlink
hard-
16 12
2...2.1.1..1.11.
.22.2.3..223.2..
.33..3.2....2..3
2...1.1.322.1..3
..31..12....3...
.....1..23..3...
21.02..3..2.12..
.12.2.2.1.1.0..2
.2..32.31.....3.
.1..2..2.1.3...3
.112..3.2211..1.
..3.22......33.1
