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Answer :
There are a good
many different solutions to this
puzzle.
Any contiguous pair, except 7-8, may be moved first, and after the
first move there are variations.
The following solution shows the position from the start right through
each successive move to the end:
. |
. |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
4 |
3 |
1 |
2 |
. |
. |
5 |
6 |
7 |
8 |
4 |
3 |
1 |
2 |
7 |
6 |
5 |
. |
. |
8 |
4 |
3 |
1 |
2 |
7 |
. |
. |
5 |
6 |
8 |
4 |
. |
. |
2 |
7 |
1 |
3 |
5 |
6 |
8 |
4 |
8 |
6 |
2 |
7 |
1 |
3 |
5 |
. |
. |
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