Answer: Fortunato's rival in wine tasting
Explanation: Luchesi is an expert at wine tasting which is why he is Fortunato's rival. He is never actually seen in the story but is rather used as bait by Montresor who wants to lure Fortunato to his death. He claims he has bought some Amontillado and wants to make sure it is a genuine wine so he is on his way to fetch Luchesi. Fortunato claims he has no previous engagements so he will try the wine instead because he cannot stand the thought of his rival doing it. They retreat to the wine cellar and it is after that when Fortunato gets killed.
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