% slitherlink 737 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/737.a.htm
slitherlink
medium
16 12
3.23..33.23.31.3
..23.3...3.....3
2.2..2..2122....
..2.32.......23.
..2..3..22.12..0
1.....2....2...1
3...2....2.....3
3..33.22..2..3..
.02.......32.2..
....2331..3..2.2
3.....1...2.12..
1.12.33.13..22.2
