Magnus Carlsen is a 24-year-old chess mastermind, who’s currently the top-rated player in the world — and the highest-rated player in the history of chess, period. In 2013, TIME named Carlsen one of the 100 most influential people in the world.
At the recent Sohn Conference in New York, the Norwegian chess grandmaster took on three opponents simultaneously — and he was completely blindfolded. This meant he had to visualize the three games in his mind while playing against the clock.
Sounds tough, but Carlsen was up for the challenge. Watch the drama unfold in the clip above.