In 1956, FIDE changed the world championship rules so that a defeated champion would have the right to a return match. Yuri Averbakh alleged that this was done at the urging of the two Soviet representatives in FIDE, who were personal friends of Botvinnik. Averbakh also claims that Botvinnik's friends were behind FIDE's decision in 1956 to limit the number of players from the same country that could compete in the Candidates Tournament, and that this was to Botvinnik's advantage as it reduced the number of Soviet players he might have to meet in the title match.