How did Vishy Anand trick 13-year-old Praggnanandhaa

How did Vishy Anand trick 13-year-old Praggnanandhaa?
It's always a pleasure when the present and future of Indian chess cross swords with each other. 13-year-old Praggnanandhaa had the black pieces when Vishy opened with 1.e4 at the Tata Steel Chess India Blitz 2018.

Put under great pressure Pragg fought valiantly and almost salvaged the game to a draw. But how did Vishy Anand manage to trick the youngster? Find out in the video below.

Note: This was the rematch between Anand and Praggnanandhaa, after their first encounter in the same event had ended in Anand's favour.