Question: What chess champion who holds the records for consecutive professional tournament victories (15) was featured in the World Chess Championship 1984?

Context articles: 2016 in chess
World Chess Championship 2018
Garry Kasparov
Konex chess tournament
World Chess Championship 2008
World Chess Championship 1984
Bobby Fischer
World Chess Championship 2006
World Chess Championship 1963
Raúl Sanguineti

Major chess events that took place in 2016 included the Women's World Chess Championship 2016 between Mariya Muzychuk and Hou Yifan, won by Hou Yifan, and the Candidates Tournament, won by Sergey Karjakin, who challenged Magnus Carlsen in the World Chess Championship 2016.
 Magnus Carlsen won the match on tiebreaks and retained the title of World Chess Champion.
The World Chess Championship 2018 is an upcoming chess match between the reigning World Chess Champion, Magnus Carlsen, and a challenger to determine the World Chess Champion.
 It will be held under the auspices of FIDE, the world chess federation, with the organisation rights belonging to Agon, its commercial partner.
Garry Kimovich Kasparov (Russian: Га́рри Ки́мович Каспа́ров , ] ; born Garik Kimovich Weinstein, 13 April 1963) is a Russian (since 1991) and Croatian (since 2014) chess grandmaster, former world chess champion, writer, and political activist.
 From 1986 until his retirement in 2005, Kasparov was ranked world No. 1 for 225 out of 228 months.
 His peak rating of 2851, achieved in 1999, was the highest recorded until being surpassed by Magnus Carlsen in 2013.
 Kasparov also holds records for consecutive professional tournament victories (15) and Chess Oscars (11).
The first Konex Master Chess Tournament organized by the founder and president of the Konex Foundation, Luis Ovsejevich, started off in Buenos Aires in 1977.
 The foundation sponsored Marcelo Tempone, World Chess Champion Junior, for further training and so as to participate in international tournaments (1979-1980), the Argentine Team to the Olympiads for players under 26, held at Mexico City 1980, the Argentine Chess Team, to the First World Chess Championship for Teams, held in Lucerne, Switzerland, in 1985, Hugo Spangenberg (13 years old) in the Infant World Chess Championship, at Puerto Rico 1989, and the participation of the Argentine and South American (Female) Champion Claudia Amura in the Inter-Zone Chess Tournament in Moscow, Russia, in 1990.
The World Chess Championship 2008 was a best-of-twelve-games match between the World Chess Champion, Viswanathan Anand, and the previous World Champion, Vladimir Kramnik.
 Kramnik had been granted a match after not winning the World Chess Championship 2007 tournament.
The World Chess Championship 1984 was a match between challenger Garry Kasparov and defending champion Anatoly Karpov in Moscow from 10 September 1984 to 15 February 1985 for the World Chess Championship title.
 After 5 months and 48 games, the match was abandoned in controversial circumstances with Karpov leading five wins to three (with 40 draws), and replayed in the World Chess Championship 1985.
Robert James Fischer (March 9, 1943January 17, 2008) was an American chess grandmaster and the eleventh World Chess Champion.
 Many consider him to be the greatest chess player of all time.
 In 1972, he captured the World Chess Championship from Boris Spassky of the USSR in a match held in Reykjavík, Iceland, publicized as a Cold War confrontation, which attracted more 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, the game's international governing body, over one of the conditions for the match.
 This allowed Soviet GM Anatoly Karpov, who had won the qualifying Candidates' cycle, to become the new world champion by default under FIDE rules.
The World Chess Championship 2006 was a match between Classical World Chess Champion Vladimir Kramnik, and FIDE World Chess Champion Veselin Topalov.
 The title of World Chess Champion had been split for 13 years.
 This match, played between September 23 and October 13, 2006, in Elista, Kalmykia, Russia, was to reunite the two World Chess Champion titles and produce an undisputed World Champion.
At the World Chess Championship 1963 Tigran Petrosian narrowly qualified to challenge Mikhail Botvinnik for the World Chess Championship, and then won the match to become the ninth World Chess Champion.
 The cycle is particularly remembered for the controversy surrounding the Candidates' Tournament at Curaçao in 1962, which resulted in FIDE changing the format of the Candidates Tournament to a series of knockout matches.
Raúl Carlos Sanguineti (Paraná, 2 February 1933 – Buenos Aires, 6 August 2000) was an Argentine chess Grandmaster.
 He won the Argentine Chess Championship seven times, in 1956, 1957, 1962, 1965, 1968, 1973 and 1974.
 Raúl Sanguineti played for Argentina in seven Chess Olympiads.
 He won two individual gold medals at Moscow 1956 and Varna 1962, and two team bronze medals at Munich 1958 and Varna 1962.
 In total, he represented his country in seven Olympiads with an aggregate of over 70 per cent (46 -7 =42).
 He played in the World Chess Championship Interzonals at Portorož 1958 and Biel 1976.
 Important tournament victories included São Paulo 1957, Bariloche 1960, Buenos Aires (Club Argentino) 1963, Punte del Este 1964, Buenos Aires Open 1968, Fortaleza Zonal 1975, Mar del Plata 1976, Buenos Aires 1977, and Santos Lugares 1977.
 During his competitive career, which ran from 1954 to 1977, he very rarely finished in the bottom half of the tournament table.
 In 1980 he won the Konex Award as one of the 5 best chess players of the decade in his country.