Win the chance to meet JK Rowling

This FT competition is aimed at every child who is potty about Harry Potter. The prize? A once-in-a-lifetime chance to review JK Rowling’s latest blockbuster, Harry Potter and the Half-Blood Prince, for the FT and to question her at a news conference.

The winning child - who must be aged between 8 and 16 - and a parent or guardian will travel to Edinburgh on Friday, July 15, arriving in the grounds of Edinburgh Castle in a horse-drawn carriage. Along with around 70 other youngsters, the FT’s representative will be taken to the Great Hall - a dead ringer for the one at Hogwarts - where on the stroke of midnight, as the new book is officially published, Ms Rowling will read extracts and hand each child a signed copy.

On Saturday evening the winners will gather for a banquet at the Castle while the accompanying adults are entertained elsewhere. At 11am on Sunday the children will be able to put the questions they have devised to Ms Rowling before filing their stories.

So how to unlock the magic? Each Saturday for three weeks, we will publish questions to which only the truly Hogwarts-savvy will know the answers. In the final week, we will provide an application form, asking entrants to give answers to all three questions, and to submit a 400 word review of their favourite Harry Potter book.

The closing date for entries is June 13 and our distinguished judges, David Cameron, Shadow secretary of state for education and skills, Martin Stephen, High Master of St Paul's School, London and Andrew Gowers, editor of the FT, will select the winner who will be notified by June 20. The FT will pay the cost of transportation within the UK and weekend accommodation for the winner and guardian. The publishers Bloomsbury will organise and pay for the activities in Scotland.

Question one: Who did Harry rescue from the lake?

Question two: What did Dumbledore do in 1945?

Question three: Which member of the Black family has a child at Hogwarts?