Magnus Carlsen is the world’s highest-rated chess player, and he doesn’t spend all day playing chess. What role does that play in his success? — Magnus Carlsen, 27, is the highest-rated (human) chess player of all-time and has been world chess champion since 2013. His first championship victory is captured in the very-enjoyable Magnus, now available on Netflix everywhere. Magnus, as one might expect, puts in hours of deliberate practice in trying to become the…