Looking at the first 12 games of the 2018 Carlsen-Caruana World Championship, which all ended in draws, I saw a statistical blip where others saw an ossified match format and the death of classical chess. But nobody could decry the drama at this year’s Women’s World Championship, in which reigning champion Ju Wenjun from China saw off a fierce challenge from 21-year-old Russian Aleksandra Goryachkina.