World 6 - Level 3
Bridge over troubled Water

There are several solutions, but most do not allow you to collect all of the Bonus coins. To get a perfect score, move boulders along coloured arrows in the following order:

Left side: Yellow, Green, Red, White(s), Dark Blue, Light Blue, Black.

Right side:Yellow, Green, Red, White, Purple, Light Blue, Dark Blue, Black(s).