| Answer
:
The solution is as
follows.
You may accept the invitation to
"try to do
it in twenty moves," but you will never succeed in performing the
feat.
The fewest possible moves are twenty-six.
Play the cars so as to reach
the following positions:
| E5678 |
| ———— |
=
10 moves. |
| 1234 |
| E56 |
| ———— |
=
2 moves. |
| 123
87 4 |
| 56 |
| ———— |
=
5 moves. |
| E312
87 4 |
| E |
| ———— |
=
9 moves. |
| 87654321 |
Twenty-six
moves in all.
|