It was the first to pip and had zipped about half way. Ir really looked like one good push and it would have been out. It was stuck to the shell when I tried to help, but I don't know what did it in. I could have stuck and died from exertion or died and then stuck. I could see the beak, so I know it could breath. I had one stuck in the shell for 24 hours last hatch and it made a full recovery. The others have hatched fine and don't seem to be sticking. I only have one left to hatch. If it hasn't pipped by tonight, I am giving up on it.Strange that the egg is open which indicates it was strong enough to do that. Remember that if the chick is still alive it can't move about much because it's stuck to the shell and may only appear to be dead. Only you can be sure on that point.
If you look on my Wine cooler page from a while back I had a similar problem which turned out with a happy ending. See the video bit for "number 10".