Alexander Nikitin, born 1935 in Moscow, coached Garry Kasparov from 1973 until 1990. He was Kasparov's chief second in his candidates and world championship matches from 1983-1987. In 1992 Nikitin seconded Boris Spassky during the latter's return match against Bobby Fischer, and later in the 1990s he coached the young Etienne Bacrot. Other illustrious former pupils include Grandmaster Dmitry Jakovenko. At just 17 years of age Nikitin became one of the youngest USSR masters of sport in chess, in 1952. He was awarded the title of International Master in 1992. Nikitin gained the titles of honored trainer of the Azerbaijan Soviet Socialist Republic in 1980 and of the USSR in 1986. He became FIDE Senior Trainer in 2004. Nikitin participated in several Moscow championships, and his best result was sharing 2nd-5th places in 1954. He also played in the USSR championship in 1959. As a member of the Soviet team he won the student world championship in 1955, 1957 and 1958. Nikitin shared 3rd-4th places together with Razuvaev and ahead of Taimanov at the Botvinnik Memorial veterans tournament, held in Elista in 2002. He was a senior trainer in the Petrosian School from 1977 to 1993, which he ran from 1984 after the ex-world champion's death. Super grandmasters that Nikitin coached at the school include Levon Aronian, Alexander Grischuk and Boris Gelfand. He is the author of a number of chess books in several languages, including on opening theory. In the 2000s, Nikitin assisted Kasparov in producing the latter's autobiographical works. Living in Moscow, he remains an active chess writer, completing a Russian-language book in 2019 on the games and legacy of his friend Grandmaster Evgeny Vasiukov.