China's Ding Liren has been crowned the 17th world chess champion after a tense match against Russian-born Ian Nepomniachtchi in Kazakhstan.
Thirty-year-old Ding won the rapid chess play-off 2.5 points to 1.5, capitalising on Nepomniachtchi's mistakes in time trouble in the last of the shorter-format games, following the pair's 7-7 tie in a psychological battle across 14 longer "classical" games.
