Go get some lessons in brainology in the Sokoban-esque logic puzzle game Push'n Snap. Use your mouse to slide the blocks and try to fill the colorgaps.
Instructions:
move mouse pointer over the blocks and click in the direction where you want to push it.
For 17 move the yellows at top down, the yellows
at bottom up, the yellows in the middle have to
use the purple as blocks. Once all fo the yellows
are done, then move the purples
