Utopia 4-20

Utopia 4-20 is the 20th level in Utopia.

Difficulty
Collect 3 stars is very hard. You can only use one bird for three stars.

Strateegy
Fling the Red bird through the northwestern-most pig and hope for a huge domino-effect, clearing possibly all the pigs.

Trivia

 * This level resembles Olympic Rings.

Walkthrough
http://www.angrybirdsnest.com/angry-birds-space-utopia-level-4-20-walkthrough/