To move, take one coin at a time.
Hop over two coins to land on a third. Keep doing this.
You can move in either direction, over two separate coins, or a pair, and over any number of spaces. The aim is to get six pairs of coins in positions 1, 2, 3, 4, 5, 6.
There are several possible solutions. Here is one of them: 12 to 3, 7 to 4, 10 to 6, 8 to 1, 9 to 5, 11 to 2