% nurikabe 40 by ?, http://www.janko.at/Raetsel/Nurikabe/040.a.htm
nurikabe
easy
10 10
.2..2.....
..........
.4........
.......4.7
.....2..2.
.3..3.....
5.2.......
........4.
..........
.....3..4.
