Last year’s contest to select a new president of chess’s governing body Fide was the bitterest in the organisation’s history, with accusations of bribery, electoral fraud, embezzlement, and a vast diplomatic influence campaign waged by the Russian state. Sam Jones talks to John Thornhill about the politics of chess. Read Sam's article here

Contributors: Suzanne Blumsom, executive editor, Sam Jones, Investigations correspondent and John Thornhill, Innovation editor. Producer: Fiona Symon

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