 Complete the following phrase:  Major chess events that took place in 2018 included the Candidates Tournament, won by Fabiano Caruana, who earned the right to challenge Magnus Carlsen in the World Chess Championship 2018. Magnus Carlsen won the match on tiebreaks and retained the title of World Chess Champion. There were two Womens World Chess Championship events; the first a match held in May between Ju Wenjun and Tan Zhongyi, won by Ju Wenjun, and the second, 