Minecraft wiki entry for Things_not_to_do, associated text: For most players, the Overworld is the most ideal dimension for summoning the Wither. However, the player should still think carefully about where to fight it. It is usually easier to fight the Wither in caves than it is to fight it above ground since the ceilings in the caves prevent it from flying high, making it easier to fight. The most effective strategy to fighting the Wither is to create a long 1 by 2 hallway and a small 3 by 3 room to one side of it. The player should then summon the Wither in the 3 by 3 room and then immediately back off into the hallway before it explodes. The player can then shoot the Wither safely from the hallway because the Wither cannot fit in the hallway and therefore cannot reach the player. Once the Wither reaches half health, the player can then run forward and finish it off with a sword. A player using this tactic could defeat the Wither easily even with iron armor, a little bit of food, and a few healing and strength potions.