A defamation lawsuit has been filed by Russian chess legend Vladimir Kramnik against the world chess governing body FIDE, and the venue is a Swiss civil court. This legal action comes as a result of an inquiry into the legendary player’s rumored harassment of fellow players who were accused of cheating without any proof after the demise of American Grandmaster Daniel Naroditsky.

Kramnik posted on social media that legal action became necessary after he faced continuous attacks from fellow players and FIDE. FIDE CEO Emil Sutovsky previously called Kramnik’s accusations against Naroditsky “appalling and outright shameful.” While the cause of Naroditsky’s death remains unclear, he reportedly mentioned being under severe mental stress from Kramnik’s allegations in his final livestream.

Czech Grandmaster David Navara also reported feeling distressed and suicidal following online cheating claims made by Kramnik. Despite criticism, the former world champion maintains his statements were based on evidence.

“I have initiated formal legal proceedings against FIDE in accordance with Swiss law at the Court of Lausanne. The preliminary procedure typically lasts 2–3 months,” Kramnik said. He added that his legal team will finalize details, including financial compensation claims, before filing the main suit.

Kramnik has also requested the preservation of evidence at FIDE headquarters, ensuring that all documents, correspondence, and electronic records relevant to the case are maintained without alteration.

Addressing criticism from top players, including Magnus Carlsen and Indians like Nihal Sarin, who publicly linked him to Naroditsky’s death, Kramnik said, “Several players have publicly named and shamed me. None have apologized or retracted their statements, ignoring the evidence I provided.”

He clarified that the lawsuit is distinct from FIDE’s ethics inquiry, which alleges a two-year pattern of conduct harming players’ dignity. Kramnik further said, “My lawsuits cover much more than FIDE’s ethical actions.”

The dispute has brought a very famous controversy in the chess world and has opened debates on who is responsible, how players should behave, and how to run international chess tournaments.