A guide to completing the World 2 Quicksand Level in Super Mario Bros 3 for the Nintendo Entertainment System.
How to Clear the World 2 Quicksand Level
Go to the right and jump over the quicksand, then stomp on the Red Paratroopa to avoid the Venus Fire Trap and get past the second pit of quicksand.
To the right, jump over the two Venus Fire Traps in the quicksand.
Next, there is a Green Koopa Troopa, and to the right of that, there is a tornado. If you walk into the tornado, you get stuck in it and sent back a short distance. You need to jump into the tornado and keep moving so you don't get pulled back into it.
After the tornado, there are several brick platforms. At this point, the Angry Sun starts spinning in the sky, and will swoop down to try to hit you. Go to the right and stomp on a Green Paratroopa, then stomp it again and pick up the shell, and you can try to kick the shell at the Angry Sun to get rid of it.
After that, there are two pits of quicksand, followed by the end of the level. Run and hit the Goal Block to complete the level.
After the Level
You can optionally visit the Toad House, where you have a chance of getting a Super Mushroom, Fire Flower, or Super Leaf.
If the Hammer Bro is reachable, you can defeat him to get a Hammer. You can stand next to a rock on the World Map and use the Hammer to destroy the rock, but don't do that yet. There is a rock in the upper-right part of the map that you should use the hammer on to get a rare item.