A chess grandmaster has responded to bizarre claims that he used anal beads to beat world No 1, Magnus Carlsen. World chess champion Carlsen, 31, withdrew from the Sinquefield Cup last week after an unexpected defeat to 19-year-old Hans Niemann – a relative newcomer to the world of professional chess. Carlsen announced his withdrawal from the tournament with a cryptic tweet, which included a video of football manager Jose Mourinho saying: "If I speak I am in big trouble."  Niemann