Cubic Disturbance

[Mistery]

(puzzle)
Place bombs on the screen, set the timers, and make the square touch the ground!

Play Here (http://www.playedonline.com/game/59054/Cubic-Disturbance.html)

Please use spoilers to give hints:
Enter text here...

[Kzin]

It looks so harmless...sooo easy......Real tricky one... Good one Mistery:cattail:

[donaud]

Not understanding how to "unlock" the block in Level 6.

What's the goal here ?

EDIT: Stuck at 10... it's brutal.

EDIT: DONE. Great Game.