After you started the game by clicking and removing
the first marble your goal is to remove as many
as possible. The movement rule is that
you may jump in vertical or horizontal direction
over marbles that are adjacent to your selected marble
if the tile behind it has a hole. (that's the reason
why you start the game by removing a marble: there'd
be no hole else)
To move, first click a marble and then the tile you want
to jump to. If it's a valid turn your marble
will jump over the other one which is then
removed. Note: Konqueror is quite slow. Mozilla and Opera work much better.