Freestyle Chess Grand Slam tour boss Jan Henric Buettner and all-time great Magnus Carlsen have called on International Chess Federation (FIDE) president Arkady Dvorkovich to resign after talks over an agreement about the new series fell through.

The International Chess Federation (FIDE) reiterated that no agreement between the sport’s global body and the Freestyle Chess Tour had been reached regarding the use of the ‘World Championship’ term.

A FIDE statement declared that efforts to work out a consensus with the Freestyle Chess Tour had failed over the use of the term ‘world championship’

World No. 1 Magnus Carlsen shared a text that FIDE chief Dvorkovich had sent to his father, Henrik, before demanding the Russian's resignation.

Disagreement over right to regulate any 'World Championship' and waiver for players to appear in unsanctioned league

Further talks with Fide futile, says Freestyle Chess promoter Jan Buettner; Fide says Freestyle Chess refused to acknowledge its status as sole regulator of the World Championships

Chess Grandmaster Magnus Carlsen has called for FIDE President Arkady Dvorkovich to resign due to coercive tactics and unfulfilled promises. The disagreement stems from the collapsed talks between FIDE and the Freestyle Tour,

FIDE said that the talks had fallen through due to organisers of the Freestyle Chess Tour refusing to "acknowledge FIDE's status as the sole regulator of World Chess Championships and its authority to award a World Championship title".

The conflict between the International Chess Federation (FIDE) and the organisers of Freestyle Chess Grand Slam could reportedly come to an end. Jan Henric Buettner, the co-founder of Freestyle Chess,

Discover why chess icon Magnus Carlsen is calling for the resignation of FIDE President Arkady Dvorkovich amid a high-stakes dispute over the Grand Slam Tour.