Can the frog catch the fly?
To catch the fly, the frog has to land on the same lilypad as the fly.
The frog and fly can hop from one lilypad to another that is connected
to it by a line.
The frog always starts on the big lilypad at the bottom.
The frog has to move first. After the frog moves, the fly will move,
and they continue to alternate moves.