Child Genius

The quarter-final of the Child Genius competition. The remaining 11 children have seen off some seriously tough competition to get his far, but things get even more challenging as they compete for a place in the semi-final. Today it's science. In the morning the competitors must demonstrate an extraordinary range of knowledge about some of the world's most complex scientific principles.

The semi-final of the Child Genius competition. Nearly half of the eight remaining competitors will be knocked out today, as only five can make it through to tomorrow's final. To make matters worse, illness threatens to derail one competitor and nerves nearly send another crashing out. Quizmaster extraordinaire Richard Osman presides over today's gruelling language rounds. In the first round, the competitors face fiendishly difficult definitions and anagrams, as their understanding of the English language is stretched to its limit. In the afternoon it's sudden death spelling, where one false move could send even the morning's top scorer home.

After five gruelling days of competition, it's the final of Child Genius 2019. From the hundreds who applied to take part, only five formidably talented children remain. Each one has chosen a specialist subject, which they'll be tested on with degree-level questions. The topics are epidemiology, eukaryotic cell biology, cryptoanalysis, the periodic table, and the physics of black holes. Three contestants will be eliminated, leaving just the top two, who are set to face off in a head-to-head quick-fire round. Who will walk away with the Child Genius trophy?