Leap Frog

Here's a cute puzzle that Large sent me.


The objective is to move all the brown frogs on the right to the left while moving the green frogs for the left to the right by leaping from the rock they are on to the empty rock. A frog can jump over another frog in front of itself.

The puzzle in digital form is too large to include here. However, you can access it by clicking on the image above and then clicking on a frog to make it jump.