There's a "result" section... http://jsfiddle.net/13ezk8kh/2/embedded/result/
Unless it doesn't work, in your browser.
I saw how to get to that. It looks like it just makes the bottom right window full sceen. I don't get what it is. I really do appriciate the time you took. I just don't understand what to do with it. It just seems to "blow up" the icon and tile I highlight. I can not move anything. So I was wondering. What it can do?
I guess I can live with the black squares being a movable area. I can enforce that easy enough. Promotion works like normal chess. All pawns(even the advanced one) can promote. I don't care if it is to always a queen or just out of what they lost. What ever is easier. The castling issue could be a pain. That is kind of important to toss out. Yet if there is no easy work around. Than I guess it would be best to just remove the option. I'm still trying to figure out what I'm doing wrong. Because i can't figure out how to load the custom.dat