Victoria Coren presents a special edition of the quiz show in which knowledge will only take you so far, as patience and lateral thinking are also vital. Undefeated champions of champions, the Crossworders, risk their reputation by confronting the awesome brainpower of the University Challengers, captained by the illustrious Alex Guttenplan.

It isn't going to be an easy ride for either team, as they try to connect Fortis shareholders with Muntadar al-Zaidi, sabateurs and Nikita Kruschchev.