% slitherlink 307 by Hirofumi Fujiwara, http://www.janko.at/Raetsel/Slitherlink/307.a.htm
slitherlink
medium-
14 10
.2....3..231.0
.112..0.......
3.3..3.333..02
1..1.....1.2..
.1..13..21....
02.3.2.33..1.3
..1.1.2.2.3.12
..1.1..2..1...
1....11.21...1
.0..1....3.3.1
