Im trying to write some code to find out what the best route is to take on a 
map to get somewhere.. 
 MAP
 . = Easily Passable                     S = Point to start from
 _ = Still Passable but twice as hard as .
 0 = Can not pass though this            D = Destination
  .....0...........
  ..D..0...........   So, what I want to do, is work out how to get from
  ...000___........  S to D. Its easy for us humans to say go Right 6,
  _________........  down 2, left 11, up 6 and right 1 but, how do I get
  _.___000000......  a computer to work that out????
  .....0S..........
  .....0000000.....  This would be almost IMPOSSIBLE?..
  .................
   Thanks to *Anyone* who can help :)
 Steven
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