Very interesting. I hadn't noticed it says "beyond" not and not "directly behind" as in version 1.0. I read it like you, but this raises a ew question in my example. According to p40, Ps dies if "...the element immediately in front is destroyed while in edge contact...". As the Art element was not technically in front of it, Ps survives. This means that Ps, Hd and Art can always survive if beyond another Hd or Art dying on their flank. I'll have to think about it.