I spoke too early. This game gets quite hard. I got myself into an unwinnable position and started again. Now I think I've got myself into an unwinnable position again.
I've closed the chest and don't know what purpose that serves. I'm stuck in the Cave of Magic with an item that I need at the lake and an item that I need to light the dark room down from the king's floor. I can't take both items out of the exit, as it's too narrow. I can't take the first item, as it's too dark. If I take the second item, I end up back at the lake, but burn down the tower in the process, then I can't get back to the tower.
Does the butterfly east of the lake serve any purpose other than to lead you to the secret exit that serves no purpose other than to give you a point?
Any help would be most appreciated. Gareth, did you get any further?