Pint-sized brainboxes face the infamous black chair, tonight tackling questions on Abba, big cats, the reign of Henry VIII and the James Bond films. With John Humphrys.

Pint-sized brainboxes face the infamous black chair, tonight tackling questions on volcanos, the American Civil War, showjumper Pippa Funnell and the Lord of the Rings books. With John Humphrys.

More pint-sized brainboxes step up to the infamous black chair, answering questions on the history of the space shuttle, English Test cricket since 2000, The Dam Busters and Harry Potter. John Humphrys is the man with the answers.

The Roman Mysteries by Caroline Lawrence, the history of the Spitfire, birds of prey and the London Underground are the specialist subjects for the brainy boys and girls. John Humphrys hosts.

In the last of the heats, cricketing great WG Grace, heroes from Marvel's comic books, the patron saint of Ireland, St Patrick, and The Hitchhiker's Guide to the Galaxy by Douglas Adams are the specialist subjects for the brainy boys and girls. John Humphrys hosts.

It's the final of the toughest children's quiz in Britain. John Humphrys offers six contestants a seat in the infamous black chair to answer questions on their specialist subjects: the mammals of the African plains, the life of Roald Dahl , Chelsea FC, Doctor Who in 2005, the Zulu War and Greek mythology.