Chess controversy: what happened between Niemann and Carlsen?

Hans Neimann caused a major upset after beating chess world champion Magnus Carlsen, with Carlsen accusing the 19-year-old of cheating during the match

Cheating allegations, a $100 million lawsuit, and false rumors: Inside the scandal rocking the chess world - ABC News

Magnus Carlsen, Hans Niemann bury chess hatchet

Who is Hans Niemann, the controversial teen chess grandmaster – and did he really cheat against world champion Magnus Carlsen? Inside the 19-year-old's rise to notoriety

Carlsen against Niemann: controversy, statistics and drama

Hans Niemann Amends Complaint, Alleges Carlsen Paid Friend To Yell 'Cheater Hans'

Chess Is in Chaos Over Suspicion That a Player Cheated Against Magnus Carlsen - WSJ

Carlsen accuses Niemann of cheating more - and more recently - than he admits

Cheating Controversy Reignites as Carlsen Quits After One Move Against Niemann

Magnus Carlsen breaks silence on cheating scandal