* The Confrontation: Harry, Ron, and Hermione are faced with three magical obstacles guarding the Stone: a giant chessboard, a room full of flying keys, and a troll. They manage to overcome each challenge, making it to the final room.
* The Reveal: Inside the room, they find Professor Quirrell, possessed by Lord Voldemort. He tries to take the Stone for himself, but Harry stops him.
* The Duel: Voldemort, embodied in Quirrell, tries to strangle Harry. However, the love and sacrifice of Harry's mother, Lily, shield him from the Dark Lord's touch.
* The Climax: The touch of Voldemort's hand burns through Quirrell's face, killing him. Voldemort, weakened and unable to maintain a physical form, flees, leaving behind only his lingering presence.
* The Aftermath: The Stone is destroyed by Dumbledore, preventing Voldemort from gaining immortality. The three friends, exhausted but victorious, are awarded points by Dumbledore, securing Gryffindor House the win for the year.
This showdown is significant because it marks the first major confrontation between Harry and Voldemort, establishing the core conflict of the series. It also highlights the themes of good vs. evil, love vs. hate, and the importance of bravery and sacrifice.