Last month, Hans Niemann, a 19-year-old grandmaster chess player and rising star, defeated the reigning five-time world champion Magnus Carlsen in a round robin tournament game. After the match, Carlsen, who is also a grandmaster, dropped out of the competition and posted a tweet insinuating that Niemann had cheated.

The accusation has rocked the chess world, and Niemann has confessed that he has cheated in online games in the past. But there is no evidence of him cheating in over-the-board games played face-to-face, let alone in the match against Carlsen.

Today on Front Burner, Nate Solon, a chess master, data scientist and co-author of the book Evaluate Like a Grandmaster, brings us up to speed on the scandal.