He got Fortunto drunk so he was impared from thinking straight
Montresor succeeded in leading Fortunato to the niche without raising suspicions because he played into Fortunato's ego and pride. By appealing to Fortunato's sense of being a connoisseur of wine, Montresor was able to manipulate him and maintain his trust throughout the journey to the niche. Additionally, Montresor skillfully masked his true intentions by pretending to be concerned for Fortunato's health and insisting on helping him when he appeared unwell.
In "The Cask of Amontillado," Poe's narrator is a very clever and devious man who speaks eloquently with an acute understanding of men's natures. Montresor is patient, too. Like a cat who stalks his prey, Montesor searches for Fortunato's vulnerability: "He prided himself on his connoisseurship in wine" and in the matter of old wines, he "was sincere." Knowing that Fortunato is always interested in tasting a superior wine, Montesor seeks out his victim, feigning joy at finding him as he has wanted to "consult" with him about his large cask of Amontillado.
Then, lest he seem too eager, Montesor plays with Fortunato as a cat plays with a mouse:
'As you are engaged, I am on my way to Luchesi. If anyone has a critical turn, it is he. He will tell me--'
'Luchesi cannot tell Amontillado from sherry!'
Again Montesor pulls back, apologizing for asking him because the vaults are damp and he should not endanger Fortunato. At this point, Montesor toys with the ego of Fortunato, again. He says he will just ask Luchesi.
Drunkenly, Fortunato presses himself upon Montresor' s arm and is led away. As they enter the catacombs, Montresor makes certain that Fortunato continues to drink. He protests against going further, telling his victim that the niter is too bad, the damp is harmful. He says, "As for Luchesi--" and Fortunato angrily remarks, "He is an ignoramus" and goes on because he desires to be the one who judges the amontillado, not Luchesi.
As they pass into the damp vault, Montesor pretends that he will take Fortunato back; he distracts the man with the sign of the mason and phrases in latin. Finally, Montesor has the unsuspecting Fortunato so drunk that the victim can easily be fettered to a wall. It is too late. Montesor has his victim where he wants him; he walls in Fortunato. When the man shouts, no one hears. Montesor takes pride in his work and considers it an act of justice.
Montresor keeps suggesting they go back to further manipulate Fortunato and give him a false sense of security, ultimately leading him to his demise in the catacombs. His repeated suggestions to go back help to prolong the journey and make Fortunato more susceptible to Montresor's revenge plot.
The main conflict is that fortunato had done something to montresor and now montresor wants to get back at him by killing him.
The inciting cause in "The Cask of Amontillado" is when Montresor reveals that he has been insulted by Fortunato but has been patient in seeking his revenge. This revelation sets the events of the story in motion, leading Montresor to plot and carry out the murder of Fortunato.
Montresor has a conflict with Fortunato in "The Cask of Amontillado." Montresor seeks revenge against Fortunato for some unspecified insult, leading him to lure Fortunato into the catacombs with the promise of sampling a cask of rare Amontillado wine.
Pride is a characteristic shared by both men. Montresor's pride is wounded by Fortunato's insults, leading him to seek revenge. Fortunato's pride and arrogance make him dismiss the danger he's in, ultimately leading to his downfall.
The narrator of "The Cask of Amontillado" is Montresor. He tells the story of how he seeks revenge on Fortunato, ultimately leading to Fortunato's demise.
There were no servants present at Montresor's house when he arrived with Fortunato in "The Cask of Amontillado." Montresor ensures the house is vacant before leading Fortunato to the catacombs.
Montresor drinks to show casualness and to keep up appearances while leading Fortunato into his trap. It helps him maintain his façade of friendship and trust until he can exact his revenge. Drinking also allows him to maintain a sense of control and cunning over Fortunato.
Montresor uses reverse psychology to appeal to Fortunato's pride by playing on his expertise in wine. He lures Fortunato to his home with the promise of a rare and exquisite Amontillado that he claims to have acquired. In doing so, he manipulates Fortunato's vanity and greed, ultimately leading him to his demise.
Both Fortunato and Montresor are depicted as prideful characters. They both show a sense of arrogance and self-importance in the story. Additionally, they both have a strong desire for revenge, leading to the main conflict in the narrative.
The external conflict in "The Cask of Amontillado" is between the main characters, Montresor and Fortunato. Montresor seeks revenge on Fortunato for a perceived insult, leading to a tense and suspenseful showdown between the two characters as Montresor lures Fortunato into the catacombs to carry out his plan.
In Edgar Allan Poe's short story "The Cask of Amontillado," the injuries inflicted by Montresor on Fortunato were primarily psychological and emotional. Montresor lured Fortunato into the catacombs under the pretense of tasting wine, then proceeded to chain him to a wall and wall him up alive, leading to Fortunato's eventual death.