Fifteen pennies are arranged in the pattern below:

    o o o
   o o o
  o o o
 o o o
o o o

nearby pennies touching. By the fewest number of legal moves, transform the abovementioned pattern to this pattern given below:

     o
    o o
   o   o
  o     o
 o       o
o o o o o o

nearby pennies touching.
A legal move consists of sliding a penny, not picking a penny, without disturbing the other pennies, to a new position touching at least two pennies.

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Posted by Bob on 2024-03-07 07:05:25