% slitherlink 338 by Hirofumi Fujiwara, http://www.janko.at/Raetsel/Slitherlink/338.a.htm
slitherlink
hard-
20 16
.33.21.223220.22.13.
2..3..1......3..3..3
2..1..3..03..1..2..2
3..1..1..32..2..3..1
2..3..0......3..1..1
.11.02.201031.33.13.
1..3..2......1..3..1
3..1..2..23..1..3..3
2..0..3..01..1..2..2
3..3..2......3..2..3
.31.13.312323.32.02.
2..1..3......1..2..1
1..1..1..21..3..2..3
3..0..3..33..2..1..2
1..2..1......3..2..3
.32.23.312223.10.23.
