Questions about author JK Rowling's Harry Potter books will appear on the MSN website every week until 20 December, and MSN's Mike Lok said: "We're so excited about being able to offer this amazing prize to one Harry Potter fan. Needless to say, we expect this to be a highly contested competition."
Harry Potter And The Half-Blood Prince is the sixth instalment in the series by best-selling author JK Rowling.
Actor Daniel Radcliffe will be playing the part of Harry Potter, alongside Emma Watson and Rupert Grint, who play the characters Hermione and Ron.
