The player’s shock withdrawal prompted the International Chess Federation to relax a dress code that penalized him for wearing jeans to a New York tournament.

World No. 1 Magnus Carlsen says he will play at the World Blitz Championship after initially quitting the chess tournament due to a dress code dispute with organizers.

Chess champion Magnus Carlsen quit the World Rapid Chess Championship after he refused to change out of a pair of jeans, which, according to the World Chess Federation, is a dress code violation. NBC News' Dana Griffin explains how the chess champion was able to return to compete and spark a conversation about tradition and modernization within the game.