I was out of line saying that this scenario is 'impossible' obviously that is not true, as others and myself have found out.
I was a little sleep deprived and really frustrated that night/next day.
However Don, that should go as a compliment that I like the game so much I lose sleep over it
a frequent occurrence at my house.
Yes I agree with Roman either ignore the SS to south (use as arty decoys, a tragic waste) or move them slowly with cover of smoke. As mentioned by others to win you must attack at the north.
I won simply by crossing the river high north and 'stealing' the victory hexes. The battle was actually quite gory for 2 of them.
The design of this scenario is masterful, sneaky and just plain devious. One of the best little ones!