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

Two all-conquering teams from previous series battle for the title of champion of champions – the Dicers (Series 14) and the Data Wizards (Series 17).

It all hinges on questions such as: what connects 1941-1979, 1917-2019, 1984-1984 and 2012-2009?