Magnus Carlsen was involved in a controversy at the World Rapid and Blitz Chess Championships in New York. The chess grandmaster was seen wearing jeans.

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.

International Chess Federation President Arkady Dvorkovich said in a statement Sunday that he'd let World Blitz Championship tournament officials consider allowing “appropriate jeans” with a jacket, and other “elegant minor deviations” from the dress code.