Top ranked chess player Magnus Carlsen is headed back to the World Blitz Championship on Monday.

The International Chess Federation says top ranked player Magnus Carlsen has left the World Rapid and Blitz Chess Championships after refusing to change out of the jeans he wore to the competition.

Few chess players have produced the magic commodity which separates Norway’s Magnus Carlsen from any of his peers: celebrity.

The world’s top chess federation has ruled that transgender women cannot compete in its official events for females until an assessment of gender change is made by its officials.