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The war on the chessboard was proverbial, because Kasparov and Karpov had opposing views and different political positions at the time. It was not until the beginning of the new millennium that their relationship improved. Karpov even wanted to visit his former rival in prison in 2007 when he was arrested after an unauthorized protest march for fair elections in Russia. In 2010, Kasparov supported Karpov in his candidacy for the office of FIDE President.