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
Dick Schaap Around 1955, Schaap befriended Bobby Fischer, who was at the time a twelve-year-old chess prodigy, and would later become a world chess champion. In 2005, prompted by questions posed by Schaap's son, Jeremy Schaap, Fischer acknowledged that the relationship was significant and that the elder Schaap had been a "father figure" to him. Fischer was still resentful that Dick Schaap had later written, among many other comments, that Fischer "did not have a sane bone left in his body". The Sports Emmy division of the National Academy of Television Arts and Sciences renamed their writing category "The Dick Schaap Outstanding