The Gin Game (1981)

Set in an old folks home, senior citizen Weller Martin has the disease of Old Age, meets an old woman named Fonsia Dorsey who's diabetic. They both discuss issues such as society, the hospitals, money, families, and the folks home where they live, over a game of Gin Rummy. Fonsia has never played before so Weller teachers her, instantly she goes on a winning streak, making it very hard for Weller not to lose his temper. But he does.