Against whom did Carlsen defend his classical world title in 2016?
Viswanathan Anand
Fabiano Caruana
Sergey Karjakin
Ian Nepomniachtchi
Answer
Magnus Carlsen defended his classical world title against Sergey Karjakin in 2016. This was one of his many successful title defenses throughout his career.
Magnus Carlsen Brain Twister: 20 Questions to Twist Your Mind