New Super Mario Bros. Wii 9-4 -- Pipe Nightmare

It's another automatic sidescroller! There are lots of pipes with Piranhas and tons of Bob-ombs. The Bob-ombs are crawling over some brick blocks near the beginning, so don't let them blow up the entire floor. There is no safety net. The 1st Star Coin is soon after, accessible by wall-jumping up the moving blue pipe. There are more platforms from 9-2, but they won't move until there are at least 2 things standing on them. To remedy the problem are Bob-omb blasters. You may need to clear the platforms, because they will descend into the abyss if you don't clear them off. I threw a Bob-omb at the 2nd Star Coin to get it. Later, there is a Piranha in a horizontal green pipe. I froze it so I could go through the red pipe above it. It takes you just below the 3rd Star Coin, so I just jumped to get it. Freezing the Piranha is tricky because of the sidescrolling and the Bob-ombs. You will end up at the goal just past the Star Coin. This took me 12 tries.