when a barbarian king would punish a guilty subject by allowing them to open either door he chose. Behind one door is a furious tiger, and a cheerful lady behind the other
Whether the princess will choose to tell her lover which door to open that's going to save his life or not.
The climax of the story comes when the young lover in the arena goes to the door indicated by the princess and opens it. Naturally the reader would expect to see whether the lady or the tiger was behind the door ... The the climax is when he turned, and with a firm and rapid step he walked across the empty space
when the princess waves her hand at the end of the story
There is no resolution because the reader gets to decide what happens at the end instead of it telling you what happens.