Spontaneous Explosions

I wanted to test my command block skills in Minecraft so I made this puzzle thing where it's all jumbled and there's one piece missing and you have to arrange them to make a picture. And it worked. Rather well actually.(Yes that's right! Bow before my superior command block skills!!)  Took about 7 hours(Most of which spent texturing and trying to make a custom entity for the selector but they are bugged in 1.10 beta so I gave up and remodeled an armor stand. Oh btw you'll have to have Minecraft windows 10 "edition", not java and it has to be the latest beta. I think.)

So I'm uploading it here in case you wanna check it out, or find the inevitable command that doesn't work right.

http://www.mediafire.com/file/plrba2v43xcpdsq/Puzzle.mcworld/file

There's a little tutorial inside.