% slitherlink 89 by Hirofumi Fujiwara, http://www.janko.at/Raetsel/Slitherlink/089.a.htm
slitherlink
very hard
20 15
...3..1.3..21.13.13.
0..01.21.31..3.....2
..1...2..1.32..2...3
3...21...212..11.1..
..21.1.3.3.11.1..113
.3.31.2.1.....0....1
......11.3..11...11.
0.13...2...33..21...
.3...2...1.....2..12
...2..23.3.3..2..1..
1.3.1...2...0..1..31
....2.3.3.3..13.1.1.
3102.1...102..13.312
....23.1..1.1.2..2..
0.3.0..2..1.3.1..132
