During a match in September, chess grandmaster and world champion Magnus Carlsen made his opening move, and then promptly resigned from play and walked off. This moment sent the chess community into a frenzy, as later it was revealed Carlsen had resigned in protest, accusing his opponent, Hans Niemann, of cheating. But was there evidence to back up Carlsen’s claims…and just how prevalent is cheating in pro chess? Brin-Jonathan Butler brings us inside the controversy that is consuming elite professional chess, a world which is also the focus of his book "Grandmaster: Magnus Carlsen and the Match that Made Chess Great Again."

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