Harry potter crossword puzzle

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Across
  1. 1. Harry Potter's nemesis
  2. 3. The guards of Azkaban
  3. 4. The free elf
  4. 5. The three-headed dog
  5. 7. killed Harry's parents
  6. 9. Head of Slytherin House
  7. 13. Famous prison
  8. 14. Harry's Godfather
  9. 15. Lord Voldemort's real name
  10. 16. An insult used on non-pure-bloods
  11. 18. The school Harry attends
  12. 21. Head of Gryffindor House
  13. 23. Harry's owl
Down
  1. 1. Hogwarts headmaster
  2. 2. Sport that is played on broomsticks
  3. 6. Mythical creature that gets reborn from its ashes
  4. 8. Used to make the wearer invisible
  5. 10. Ron's rat
  6. 11. Harry Potter's best friend
  7. 12. The author of the book
  8. 17. What wizards and witches ride
  9. 19. What a wizard uses to cast spells
  10. 20. Golden ball used in Quidditch
  11. 22. Gryffindor's mascot