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09.29.2003 at 01:53PM PDT, ID: 20752224
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8 puzzle manhattan distance? easy question exam tommorow urgent ..

Tags: puzzle, manhattan, 8, distance
Dear all ,
I am having trouble understanding why 8 puzzle with manhattan distance A* is optimal?
1. if A* is optimal , why we sitll used closed list in A* ?
    because in my understanding ,  if A* is optimal there is only one best step to the solution?
2. With regar the 8 puzzle , we asked to use manhattan distance , (even though I haven't prove) I found that it could be the case that one node could have the same
    manhattan distance.

so say
                 A
      B(200)           C (200)
so say 200 is the manhattan distance, in this case, there are 2 posibble solution ? but if A* is optimal , is it should there is only 1 best path to reach the solution?

Can someone clear this one for me please...
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Question Stats
Zone: Programming
Question Asked By: wilslm
Solution Provided By: sunnycoder
Participating Experts: 2
Solution Grade: A
Views: 43
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09.29.2003 at 02:38PM PDT, ID: 9454982

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09.30.2003 at 12:03AM PDT, ID: 9457226

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11.11.2003 at 04:51PM PST, ID: 9727269

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11.11.2003 at 09:03PM PST, ID: 9728469

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11.20.2003 at 02:39PM PST, ID: 9791309

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