Bobby Fischer games, the only perfect score in the history of the tournament. His book "My 60 Memorable Games", published in 1969, is regarded as a classic work of chess literature. He won the 1970 Interzonal Tournament by a record 3½-point margin, and won 20 consecutive games, including two unprecedented 6–0 sweeps, in the Candidates Matches. In July 1971, he became the first official FIDE number-one-rated player. Fischer won the World Chess Championship in 1972, defeating Boris Spassky of the USSR, in a match held in Reykjavík, Iceland. Publicized as a Cold War confrontation between the US and USSR, it attracted more
Bobby Fischer worldwide interest than any chess championship before or since. In 1975, Fischer refused to defend his title when an agreement could not be reached with FIDE, chess's international governing body, over one of the conditions for the match. Under FIDE rules, this resulted in Soviet GM Anatoly Karpov, who had won the qualifying Candidates' cycle, being named the new world champion by default. After forfeiting his title as World Champion, Fischer became reclusive and sometimes erratic, disappearing from both competitive chess and the public eye. In 1992, he reemerged to win an unofficial rematch against Spassky. It was held in