The classic English marble puzzle. Jump over a neighbour into an empty hole, capture it, and leave just one marble - ideally in the centre.
Classic puzzle only. Score: marbles left (1 is best, +250 for the centre), a speed bonus, minus 75 per hint and 20 per undo.
Each puzzle is a scattering of marbles that can always be cleared to a single marble in the centre - a finish at the centre is the goal. Every button gives a fresh puzzle.