In the not so distant future I'm going up against the Wither , again, and in that case I would like to hear your stories and strategies on how to defeat the Wither. What kind of armor did you have? Which weapons did you use? How did you do it?!
I've once, in a realm, summoned a Wither in the Overworld, which clearly was a mistake. Getting it down to half the health was somewhat easy using Bow and Arrow, but I never quite managed to finish it off. And that involved taking advantage of a duplication glitch so that I could have a new Diamond Sword and Enchanted Golden Apple readily available. I just kept on getting killed, and blown up, my village base got blown up, and ...
A sad story, so please contribute with how you defeated the Wither!
Update: I'm mostly interested in working methods for Minecraft Pocket Edition!