% nurikabe 642 by Tom Collyer, http://www.janko.at/Raetsel/Nurikabe/642.a.htm
nurikabe
easy+
10 10
..2.......
.1..3...1.
......3..1
..3.......
........4.
.3........
.......3..
2..3......
.1...3..1.
.......2..
