A Funny Frog Jump Test

[Shrek3]

Here is a funny test that is part of a second grade computer class. Some students figure it out right away, while others report having to work on it for a week (or more) to solve it. Frogs from each group are to jump over each other and reach on the other side. Think easy ?? Give it a shot here

[rrich]

I think that I restarted it 4 times.

The sceret it where you leave the open stone.