Child Genius vs Celebrities Christmas Special
Alan Carr on why he entered the competition
Four celebrites prepare for the ultimate test on this year's Stand Up to Cancer special
Brother and sister go head to head in the finals
Rhea, 10, embarks on the spelling and comprehension round
Joshua is put to the test by his father
Richard Osman hosts the demanding Maths and Memory round
Highly gifted youngsters battle it out to be crowned the UK's brightest child of 2016
Those very intelligent kids return to Channel 4.
Can these two men work out how to separate themselves without removing the loops from their hands?
Sara borrows tricks from street theatre to give people a positive experience with maths