% minesweeper 118 by Otto Janko, http://www.janko.at/Raetsel/Minesweeper/118.a.htm
minesweeper
very hard
17 17
12..11.1..2.....1
2.....2..2..3.431
3.4.3...1.1..2...
..4..4311....22..
..4.4..3...00...2
.3...33...21.4..1
.22..3...5.3...3.
012..3.......54..
.......5.45....3.
....23.3...5.....
.4432...3..6.5.2.
3...2........3..2
2...3343..33.3...
.4........1.2....
2......2.3..1...2
2.4.323.3...10..4
.2..1..2...2.....
mines 0
