Grandmaster Magnus Carlsen has decided to participate in the World Blitz Chess Championship in New York after FIDE relaxed its dress code, allowing players to wear ‘appropriate jeans’ with jackets. Carlsen initially planned to boycott the event due to a previous $200 fine for wearing jeans at the rapid championship. FIDE President Arkady Dvorkovich acknowledged Carlsen’s concerns about the dress code, highlighting the need for discussions on modernizing the rules to reflect the evolving nature of chess as a global sport.