Ding Liren from China has become the 17th world champion, defeating the Russian Ian Nepomniachtchi in Astana. The 14-game classical match saw triumph and tragedy on both sides, with six decisive games. But with honours shared at 7-7, the classical world championship was to be decided in a four-game rapid tiebreak, just as it was in 2006, 2012, 2016 and 2018.