perplexus.info :: General : Sliding pennies #2

Sliding pennies #2 (Posted on 2005-06-06)

Nine pennies are arranged in the pattern below.

  O O O
 O O O
O O O

nearby pennies touching. By the fewest number of legal moves, transform the pattern into the pattern

   O
  O O
 O   O
O O O O

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

See The Solution Submitted by McWorter

Rating: 3.0000 (3 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)

Puzzle Thoughts

Comment 16 of 16 |

We label the pennies and show their position after each of 4 moves.

9 9 9

1 2 3 1 2 3 1 2 3 1 2 3 1 2

4 5 6 --> 4 5 6 -> 4 5 6 -> 4 . 6 -> 4 6

7 8 9 7 . 9 8 7 . 8 7 5 8 7 5 3 8

Edited on July 13, 2023, 11:43 pm

Posted by K Sengupta on 2023-07-13 23:39:12

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