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map$f[rand 8][rand 8]=1,0..9;@u=map[(',')x8],1..8;for(;$i=-2;){print$
i+++2?$i:' '," @$_\n"for[0..7],@u;($x,$y,$f)=split' ',<>;$f?$u[$y][$x
]='F':$u[$y][$x]ne'F'&&$f[$y][$x]&&die||do{$m=' ';for$z(-1..1){$y+$z>
-1&&$x+$_>-1&&$f[$y+$z][$x+$_]&&$m++for-1..1}$u[$y][$x]=$m};for$z(0..
7){for$q(0..7){$_=$u[$z][$q],$i+=$f[$z][$q]?!/^F/:/F/}}$i<8&&die"\n"}

  0 1 2 3 4 5 6 7
0           1 , 1
...
7 , , , , , 1    
6 0
Died at mine.pl line 3, <> line 29.

2;0 juerd@ouranos:~$ perl -e'undef christmas'
Segmentation fault
2;139 juerd@ouranos:~$