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 living in Moscow. FBI files do not identify Nemenyi as Fischer's father, but note that Hans-Gerhardt Fischer never entered the United States, while recording that Nemenyi took a keen interest in Fischer's upbringing. Not only were Regina and Nemenyi reported to have had an affair in 1942, but Nemenyi made monthly child support payments to Regina and paid for Bobby's schooling until his own death in 1952. In addition, Nicholas and Benson found letters by Nemenyi's first son, Peter, identifying Bobby Fischer as his brother. In March 1949, 6-year-old Bobby and his sister Joan learned how to play chess using