The Pills are our friends! They are a set of funny and naughty characters that use the game levels to test your skills. Don't be fooled by their colors though, it is not always the best solution to crash them into a block of the same color. Sometimes it is better to push than to crash!
Since you will have a number of limited Pills for each level and they come in a specific order you must think carefully in which order to destroy the blocks. All levels have at least one solution, but given the nature of the physics that rule the game you may find others as well.