Thanks Ragnar!
I have it but it was in my EFII 1.04 update and not in my 2.02 (the latest) update.
It is a monster scenario for sure.
There is also another one in that Stalingrad period called Uranus which looks to be even larger at 945kb. However it is only 220 turns and all day at 8 hex visibility. It may be a simplification of the Keltso scenario but it looks like it takes place during an earlier time line because the Germans are not pocketed yet.
These mega-large scenarios are fun to look at but I don't think I would ever try one, well maybe. It would involve a time commitment that I don't have at the moment. But someday who knows...
Hope all is well for you in Germany!
Take care my friend!
John