In a now-settled dispute with opponent Hans Niemann, Carlsen quit a tournament in 2022 after Niemann beat him, before going on to accuse his American rival of cheating. Niemann had denied the allegations, and even said he would "strip fully naked" to prove his innocence.

World No. 1 Magnus Carlsen quit the World Rapid Chess Championship on Friday after he refused to change out of the jeans he was wearing, according to the International Chess Federation (FIDE).

Magnus Carlsen was disqualified from the World Rapid and Blitz Chess Championships for flouting the dress code of the competition by wearing jeans and not changing it when requested.