
Here’s a quick quiz:
What are dementors?
What shape does Harry’s patronus take?
Who is Severus Snape, and which actor played him in the films?
What is Remus Lupin’s affliction?
What is the name of Rubeus Hagrid’s favorite pet?
Name one of the balls used in quidditch.

If you could answer even half of those questions, then this is for you:
To promote its showing of all eight Harry Potter movies for a six-month run, HBO is holding a Hogwarts House Challenge at the Blake Street Tavern on Wednesday, Jan. 31.
It’ll be a hosted trivia night, testing competitors’ knowledge of J.K. Rowling’s blockbuster books and film series.
Costumes are encouraged, and sponsors promise to have some Potter movie props on-site during the competition.
More than 300 people are expected to attend, and will be grouped in teams of 8-10.
The bad news: General admission tickets have already sold out.
The good news: The Know has 16 tickets up for grabs, so you still have a chance. Doors open at 6:30 p.m., with the 90-minute game beginning at 7:45.
Enter below, witches and wizards need not apply. Contest will close January 29 at noon.