Skirmish in the Underground Chambers

The Battle in the Philosopher's Stone Chambers was a battle that took place during Lord Voldemort's attempt to use Quirinus Quirrell to rob the Philosopher's Stone. It was Voldemort's second attempt on Harry Potter's life.

Philosopher's Stone Chambers
There are seven chambers of the Philosopher's Stone:


 * 1) Fluffy
 * 2) Devil's Snare
 * 3) Winged Keys
 * 4) Giant Wizard's Chess set
 * 5) Mountain Troll
 * 6) Potion Riddle
 * 7) Mirror of Erised and the Battle in the Philosopher's Stone Chambers

Fluffy
Professor Quirrell used music to put Fluffy to sleep while searching for the Stone, but he woke up when it stopped, and Harry, Ron, and Hermione played an owl flute and put it back to sleep before slipping through the trap door Fluffy was guarding. This was the obstacle of Rubeus Hagrid.

Devil's Snare
"Devil's Snare, Devil's Snare...what did Professor Sprout say? - it likes the dark and damp --" "So light a fire!" "Yes - of course - but there's no wood!" "HAVE YOU GONE MAD? ARE YOU A WITCH OR NOT?" "Oh, right!""

- Hermione, Harry, and Ron struggle with Devil's Snare

They dropped into Pomona Sprout's obstacle. Harry Potter, Ron Weasley and Hermione Granger were caught in a Devil's Snare that had been placed to soften a deadfall through the trapdoor. Hermione Granger saved them from death by strangulation by attacking the plant with bluebell flames. Together, Harry, Ron, and Hermione were released.

Winged Keys
When the trio entered a room filled with winged keys - the obstacle of Filius Flitwick - they first thought the keys were birds. There was a locked door at the end of the room, and although Hermione tried the spell Alohamora, the door remained locked. They finally realized that the 'birds' were really flying keys. There were hundreds of keys zooming around, but Hermione cleverly deduced that the key that would open the locked door must be an old one to match the old lock on the door. The only old key was one with a broken wing. As soon as Harry, Ron, and Hermione took off on brooms to catch the winged key they rest of the keys started zooming and darting all over the place. The winged key that was able to open the locked door was described as an old-fashioned silver key with bright blue wings.

Giant Wizard's Chess Set
They arrived at Minerva McGonagall's obstacle - the giant chess set. Ron took command of the pieces, himself, Harry and Hermione replacing missing pieces, to defeat the opposing team and be allowed to pass. In the end, Ron sacrificed himself to allow Harry to capture the opposing King. At the end of year feast, Albus Dumbledore gave Ron fifty house points for winning the best played game of chess that Hogwarts had ever seen. You could also see Percy Weasley shouting about his brother's accomplishments.

Mountain Troll
When Harry and Hermione arrived to the obstacle of Quirinus Quirrell - the troll - they realized it was already out cold. Harry was just glad they didn't have took rake it, since Quirrell already had.