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.

World No.1 chess player Magnus Carlsen has launched a scathing attack on FIDE president Arkady Dvorkovich, accusing him of abusing his authority and coercing players against Freestyle Chess Grand Slam.

Magnus Carlsen, a 34-year-old Norwegian, is among the greatest chess players of all time.

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

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

World number one Magnus Carlsen has demanded that International Chess Federation President Arkady Dvorkovich resign for "coercion of players, misuse of power and broken promises" after talks to thrash out an agreement between the world body and the Freestyle Tour co-founded by him collapsed.

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

Fide has been unequivocal about not wanting to part with its sole authority over the ‘World Championship’ title

The International Chess Federation (FIDE) issued a comprehensive statement on Monday following the news that no agreement had been reached between FIDE and Freestyle Chess over the use of the “World Championship.

The feud saw FIDE on one side and prominent players such as Magnus Carlsen on the other. Why was the chess world in turmoil in recent weeks and what has changed now? We explain.