'The match,' asserted FIDE President Arkady Dvorkovich, 'has been played at the highest standards of fair play, no investigation is required.'
Russian chess Grandmaster Boris Spassky, who took French nationality in 1978, was the 10th World chess champion, holding the title from 1969-1972, when he lost it to American Bobby Fischer in Reykjavik in a contest later dubbed as the "Match of the Century".
The much-anticipated World Championship rematch between Indian veteran Viswanathan Anand and title-holder Magnus Carlsen will be staged from November 7 to 28 in Sochi, Russia.