So has beaten Carlsen twice in the finals in the ongoing Champions Chess Tour (CCT) and poses a threat to the Norwegian’s drive toward a third straight title in the 10-man field that also includes world No. 2 Fabiano Caruana, winner of the 2018 edition, No. 3 Ding Liren, No. 5 Maxime Vachier-Lagrave and No. 6 Levon Aronian, the 2017 champion.