A guide to completing World 7-3 in Super Mario Bros 1 for the Nintendo Entertainment System.
Get All the Coins
If you want to get a hidden 1UP in World 8-1, be sure to get all the coins in this level without dying! If you don't, the 1UP won't be there!
How to Clear World 7-3
Go to the right and you will find a bridge where a lot of flying Cheep-Cheep fish are jumping up from below, as well a Koopa Troopa and Paratroopa. Go to the right while dodging the fish and turtles and collecting the coins on the way. The ? block on the way contains a Mushroom or Fire Flower.
Make a running jump to the right from there and try to fall through the three coins in the air. You'll land on a tree. From there, jump right to get on the next part of the bridge. Keep going to the right, be careful of Paratroopas, collect coins, and carefully jump over the three short segments of bridge with a bunch of coins above them. From there you can just go to the right until you reach the staircase to the goal pole. Run and jump onto the goal pole and you will continue to World 7-4.