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 makes him tick" and described him as "a troubled human being" with "obvious personal problems". Valery Krylov, advisor to Anatoly Karpov and a specialist in the "psycho-physiological rehabilitation of sportsmen", believed Fischer suffered from schizophrenia. Psychologist Joseph G. Ponterotto, from second-hand sources, concludes that "Bobby did not meet all the necessary criteria to reach diagnoses of schizophrenia or Asperger syndrome. The evidence is stronger for paranoid personality disorder." Magnús Skúlason, a chess player, psychiatrist and head doctor of Sogn Mental Asylum for the Criminally Insane, befriended Fischer towards the end of Fischer's life. From "Endgame", Fischer's 2011 biography by Frank