Chess right of a deposed champion to a rematch, and the next champion, Armenian Tigran Petrosian, a player renowned for his defensive and positional skills, held the title for two cycles, 1963–1969. His successor, Boris Spassky from Russia (champion 1969–1972), won games in both positional and sharp tactical style. The next championship, the so-called Match of the Century, saw the first non-Soviet challenger since World War II, American Bobby Fischer, who defeated his Candidates opponents by unheard-of margins and clearly won the world championship match. In 1975, however, Fischer refused to defend his title against Soviet Anatoly Karpov when FIDE did
Bobby Fischer the Western Open in Bay City, Michigan, which he won with 7½/8. In August–September 1963, Fischer won the New York State Championship at Poughkeepsie, with 7/7, his first perfect score, ahead of Arthur Bisguier and James Sherwin. In the 1963–64 US Championship, Fischer achieved his second perfect score, this time against the top-ranked chess players in the country. This result brought Fischer heightened fame, including a profile in "Life" magazine. "Sports Illustrated" diagrammed each of the 11 games in its article, "The Amazing Victory Streak of Bobby Fischer". Such extensive chess coverage was groundbreaking for the top American sports magazine.