In 2016 the classical games were tied, but there were wins by both Carlson and Karjakin. Otherwise it would have been 7 years, since the previous world champion

In 2016 the classical games were tied, but there were wins by both Carlson and Karjakin. Otherwise it would have been 7 years, since the previous world championship match was in 2014. But titling "unlike the last time (and only the last time) there has been a win and it's also the longest game ever" would have been less clickbaity.