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The bottom diagram consists of 16 points in a 4 x 4 arrangement. Numbers are written next to the points. The numbers are written in red, green, blue, orange, and black. The numbers range from 1 to 4. These points are not connected by line segments.]  <br>
The bottom diagram consists of 16 points in a 4 x 4 arrangement. Numbers are written next to the points. The numbers are written in red, green, blue, orange, and black. The numbers range from 1 to 4. These points are not connected by line segments.]  <br>


2) Same as above
2) Same as above, but to do it in the  <br>
minimum number of moves - 37.  <br>
3) Use the numbers, changing from the upper arrangement to  <br>
the lower.  <br>
4) Same as above, but to do it in the  <br>
minimum number of moves - 72.  <br>
(Not quite sure I have the numbers  <br>
in exactly the right positions.)  <br>
Kaplan had me work on 1) myself.  <br>
Then showed me solution for 2) & 4).  <br>
Didn't stay long at all.