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 tour to Cuba, where he gave a 12-board simultaneous exhibition at Havana's Capablanca Chess Club, winning ten games and drawing two. On this tour the club played a series of matches against other clubs. Fischer played , behind International Master Norman Whitaker. Whitaker and Fischer were the leading scorers for the club, each scoring 5½ points out of 7 games. In July 1956, Fischer won the US Junior Chess Championship, scoring 8½/10 at Philadelphia to become the youngest-ever Junior Champion at age 13. At the 1956 US Open Chess Championship in Oklahoma City, he scored 8½/12 to tie for 4–8th