The World Chess Championship 2018 opened in London on Friday.
American grandmaster Fabiano Caruana is challenging the current Norwegian title holder, Magnus Carlsen – both in their 20s – in this 12-match championship.
Carlsen became world champion five years ago when he was just 22. Caruana is a year younger and is considered a special talent, leaving chess experts undecided who will win.
Al Jazeera’s Lee Wellings reports.