How many movies have Guy de Maupassant and Heide Richter collaborated on?

They have worked on 1 movie together! Their first movie together was Die Nichten der Frau Oberst 2. Teil - Mein Bett ist meine Burg (1969) and was their highest rated movie together. They have not worked together since Die Nichten der Frau Oberst 2. Teil - Mein Bett ist meine Burg (1969).