Stalingrad. Divide the map up into two halves: one half city of Stalingrad, other half of the map the area from which operation Uranus was launched. The more troops the Germans lead into Stalingrad the bigger the chance they won’t be able to hold the perimetre. Some die rolls might be nice for the Russians so the Germans don’t know exactly how many Russian units are lining up for the attack. Id Stalingrad itself is taken, Germans win.
Excellent idea,sir !!!