Think you know the books better than the films?
One round per book, easy to expert, a fun fact after every answer.
Hagrid loses his temper with Dudley. What pops out of a hole in Dudley's trousers?
Fun fact: Hagrid admits he meant to turn Dudley into a pig, but the boy was already so much like one that there wasn't much left to do.
Harry's wand is eleven inches of holly. What's at its core?
Fun fact: Ollivander remembers Harry's dad's wand too: mahogany, eleven inches, pliable, and 'excellent for transfiguration.'
What's the secret to getting past Fluffy, the three-headed dog?
Fun fact: Fluffy is Hagrid's own pet. He bought him off 'a Greek chappie' he met in the pub, then lent him to Dumbledore.
In the Mirror of Erised, Ron sees himself as Head Boy. What else is he?
Fun fact: He's also holding both the House Cup and the Quidditch Cup, and wearing a badge just like his big brother Bill used to.
What does Dumbledore say he sees when he looks in the Mirror of Erised?
Fun fact: His complaint: another Christmas came and went without a single pair, because people insist on giving him books.
What Christmas present do the Dursleys send Harry at Hogwarts?
Fun fact: Ron is so fascinated by the strange Muggle coin ('What a shape!') that Harry lets him keep it.
On his birthday, how many presents does Dudley count before his face falls?
Fun fact: That's two fewer than the year before. Then Aunt Marge's present turns up under a big one from his parents, making it thirty-seven.
Dumbledore's Chocolate Frog card says he enjoys chamber music and what else?
Fun fact: The same card credits him with defeating the dark wizard Grindelwald in 1945 and discovering the twelve uses of dragon's blood.
Dumbledore risks a Bertie Bott's bean, hoping for toffee. What flavor does he get?
Fun fact: He'd gone off the beans after an unlucky vomit-flavored one in his youth, so this was a brave second chance.
What 'few words' does Dumbledore say before the start-of-term feast?
Fun fact: Then he sits right back down and the hall cheers. Percy's verdict: Dumbledore is a genius, but he is a bit mad.
Hermione's Polyjuice Potion goes wrong. What does she end up looking like?
Fun fact: The hair came off her robes after Millicent Bulstrode put her in a headlock at the Dueling Club, and Polyjuice isn't meant for animals.
Harry tricks Lucius Malfoy into freeing Dobby. What does he hide the diary inside?
Fun fact: Dobby had explained that his family was careful never to pass him even a sock, because any clothes would set him free.
The Dursleys' big dinner with the Masons falls apart. What is Mrs. Mason terrified of?
Fun fact: So when a barn owl dropped a letter on her head (right after Dobby smashed Aunt Petunia's cream-and-violets pudding), she fled screaming.
Gilderoy Lockhart's pop quiz about himself asks his favorite color. What is it?
Fun fact: His ideal birthday gift, per the same quiz: harmony between all magic and non-magic peoples. Though he wouldn't say no to firewhisky.
Nearly Headless Nick invites Harry to his deathday party. Which deathday is it?
Fun fact: The buffet is gloriously rotten: rotten fish, a maggoty haggis, moldy cheese and a gray cake shaped like a tombstone.
Why is Ron so scared of spiders?
Fun fact: Ron was three, and it was Fred's revenge for Ron breaking his toy broomstick.
Harry's first Floo Powder trip goes wrong. Which shop does he tumble into?
Fun fact: Hiding in a black cabinet, he watches Draco eye a Hand of Glory, which gives light only to the person holding it.
What make of car do Harry and Ron fly to Hogwarts?
Fun fact: After crashing into the Whomping Willow, the car goes wild and trundles around the Forbidden Forest on its own, scratched and muddy.
Neville's boggart turns into Snape. What does Neville's spell dress him in?
Fun fact: Boggart-Snape staggers about in a lace-trimmed dress, a towering hat topped with a moth-eaten vulture, and a huge crimson handbag.
What's the polite way to approach a hippogriff like Buckbeak?
Fun fact: If it doesn't bow back, Hagrid's advice is to get away 'sharpish,' because those talons hurt.
How do you calm The Monster Book of Monsters so it'll open?
Fun fact: Flourish and Blotts kept about a hundred copies in an iron cage, where they wrestled each other and sent torn pages flying.
Harry boards the Knight Bus under a fake name. Whose name does he give?
Fun fact: The bus is a violently purple triple-decker, and its driver, Ernie Prang, is an elderly wizard in very thick glasses.
What does a Knight Bus ride to London cost?
Fun fact: Thirteen Sickles gets you hot chocolate; fifteen gets a hot-water bottle and a toothbrush in the color of your choice.
Aunt Marge's favorite dog once chased Harry up a tree. What's the dog called?
Fun fact: Marge refused to call him off until past midnight. And at tea, Ripper drinks out of her saucer.
How much did Mr. Weasley win in the Daily Prophet Draw that paid for Egypt?
Fun fact: Most of it went on the Egypt trip, but there was enough left to buy Ron a new wand for the school year.
Who wrote down the week's Gryffindor passwords, letting Sirius Black in?
Fun fact: Two days later his grandmother sent him a Howler, the very worst thing a Hogwarts student could get at breakfast.
Watch next
Sorcerer’s Stone Book vs Movie: Every Big Change in the 2001 Film
HBO Harry Potter Series: Release Date, Cast and What the Show Can Fix
Spoilers Sorcerer’s Stone Ending Explained: Quirrell, the Mirror and Lily’s Protection
More on Harry Potter and the Sorcerer's Stone
Images: Glenfinnan Viaduct, the films’ Hogwarts Express route; photo by Daniel Kraft, CC BY-SA 3.0 · Platform 9¾, King’s Cross, London; photo by Bert Seghers, CC0 · Alnwick Castle; photo by Phil Thomas, CC BY 2.0. Via Wikimedia Commons. Video thumbnails: Book Explained on YouTube.
