Victoria Coren Mitchell hosts the quiz where knowledge only gets you so far – logic and lateral thinking are the vital extra ingredients.

Two family teams battle it out to stay in the competition, tackling questions such as: Underchamber, Equine sea monster, Pod of the temples and Little brain – what is the connection?

Victoria Coren Mitchell hosts the quiz where knowledge only gets you so far – logic and lateral thinking are the vital extra ingredients.

A semi-final place awaits one of the two returning teams, but to get there, they have to answer a series of diabolical questions, such as working out what comes next in this sequence: Diaballik, Chess and Sudoku...