A guide to completing World 3-2 in Super Mario Bros 1 for the Nintendo Entertainment System.
How to Clear World 3-2
There are a bunch of enemies to the right in a straight line, starting with a Koopa Troopa. If you want to use the Koopa Troopa's shell to hit all the enemies to the right, be sure not to shoot fireballs to the right. You'll need to run after the shell to make it hit all the enemies. Also, if you ran after the shell, be sure to jump after the shell hits a set of three Koopa Troopas, because there is a block up ahead that the shell will bounce off of. If you don't jump, you'll get hit by the shell.
Jump over the block, get the coins, and hit the ? block for a Mushroom or Flower.
Get past more enemies on the right, then you find a couple of bricks. The lower brick contains coins, and the upper brick contains a Starman. Make sure not to let the Starman fall into the pit on the right. When you get the Starman, run to the right, jump over the gap that has a brick over it (which doesn't contain anything), run through a bunch of Koopa Troopas, and jump over the Piranha Plant pipe to get the four coins above it. There is a Koopa Troopa and six Goombas after the pipe.
Go up the stairs, run and jump to hit the goal pole, and you'll continue to World 3-3.