% slitherlink 360 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/360.a.htm
slitherlink
hard-
20 15
3.3.23.3.....1...213
.23..223.302.2......
22.2.21.12.2.2..021.
....1.2.2.12022.2.2.
.2.22.2...2..32.12..
....2232.......22.2.
3.31.1...22...2.2.32
3.2..222.....1...223
2.13..1..221..312.2.
..1.2223..22.3.2....
..2.23....12...12.3.
.3..11..23.2.2...2..
1.2.32......3...3..2
.211.2...32.......32
3.332.3..312.12233..
