La Partita (The Gamble) (1988)

In this lusty romantic adventure, a young wanderer returns to his Venice home and discovers that his wealthy father has squandered the family fortune on gambling and is deeply indebted to a cruel countess from Germany. When she sees the young man, she decides she wants him and decides to make one final wager with his father with the young man as the stakes. The father is unable to resist and promptly loses, causing the hapless lad to flee the terrifying Teutonic tart and take up with a beautiful runaway. ~ Sandra Brennan, Rovi