The attack in the Philosopher's Stone Chambers was a battle that took place on 4 June 1992, during Lord Voldemort's attempt to use Quirinus Quirrell to steal the Philosopher's Stone. It was also Voldemort's second attempt on Harry Potter's life. During Harry, Ron, and Hermione's time in the chambers they battled through a set of obstacles that most eleven-year-old children would find near impossible, but succeeded anyway. In the last chamber, Harry defeated Voldemort and kept the stone safe.