World No.1 Magnus Carlsen has demanded that International Chess Federation President Arkady Dvorkovich resign for “coercion of players, misuse of power and broken promises” after talks of an agreement between FIDE and the Freestyle Tour co-founded by him collapsed over the use of the term ‘world championship.’

FIDE’s statement on Monday also asked players wanting to participate in the Tour’s events to sign a waiver to remain eligible for the official World Championship.