The Queen’s Indian Defense is a very solid defense from black and there are many opportunities that black has to be aggressive.
One of those aggressive lines involved setting a simple trap that I like to call the Queen Amidala Trap.
Instead of immediately bringing the light square bishop to b7, black moves his bishop to a6, attacking the pawn on c4. After b3 black can set the trap with Bb4. Now if white tries to block his king with his knight then he has fallen for the trap.
The best move is to block with the bishop and even still black can continue with his normal game plan.
Watch the video below to see a detailed explanation of this trap.