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
Women's World Chess Championship 1972 were joined by Kushnir, the loser of the last championship match. These four players contested a knock-out series of matches to determine the challenger. Kushnir again prevailed, earning the right to another shot at Gaprindashvili's title. The championship match was played in Riga in 1972. This time, Kushnir came closer than ever to beating Gaprindashvili, but with draws in the last two games the defending champion managed to hang onto her title by one point. Women's World Chess Championship 1972 The 1972 Women's World Chess Championship was won by Nona Gaprindashvili, who successfully defended her title against challenger Alla Kushnir.