Top 3 Obstacles That Make Me Rage

Here are the top 3 obstacles that personally make me want to rage, chosen by someone who has cleared level 1100+. 3rd Place: Rocket It's such a pain having to collect a certain amount of the same colored blocks. 2nd Place: Bomb Block Having to match the block colors 5 times is really tedious. It's frustrating when these appear because they don't break easily even with bombs or rockets. 1st Place: UFO Stop moving. Just stay still. Because you move, I can't mass-produce bombs or rockets.