This page contains the solution of level pr-20 in episode 0 (Reward Chapter) from the popular iOS and Android game Angry Birds Star Wars II. Below you can find a walkthrough to earn all 3 stars.
Launch the first Royal Guard into the top portion of the first bubble. As the Royal Guard enters, fire his anchor backwards up into the chain so as to pull it down to, detonating the TNT and releasing the boulder being held in place by the gear. Now fling one more Royal Guard down towards the bottom TNT, detonating it with the anchor to destroy the left structure. Feel free to add a comment when you've got a different strategy.