This new quiz show - a big hit in the US - starts today on Sky One. Hosted by Noel Edmonds, it puts adults to the test, as they tackle questions on subjects spanning the National Curriculum that any ten-year-old should be able to answer.

With an ultimate cash prize of £250,000, it's a battle of nerves as contestants must choose whether to go it alone and trust their own knowledge, or ask the help of one of their ten-year-old classmates.

The adults' reputations are on the line as they risk the humiliation of being outsmarted by a kid. Will they jeopardise the jackpot for the sake of saving face? If they lose they will have to drop out of school and be forced to utter TV's most embarrassing line: "I am not smarter than a ten-year-old."

But don't underestimate the challenge; after all Mozart composed his first pieces when he was five, Picasso painted Picador when he was eight, Song Yoo-geun was a physics prodigy who entered university at eight, while Tatum O'Neal won an Oscar at ten.