Bucharest 1954 (winning at first tournament abroad, ahead of Nezhmetdinov, earning IM title by FIDE); Hastings 1955/56 (winning with Olafsson, ahead of Ivkov, Taimanov; first individual participation
in the west, Viktor Korchnoi is awarded the GM title by FIDE), Kraków 1959; Buenos Aires (150th
Anniversary May Revolution) 1960 (alongside with Reshevsky). Competing in the Aula Magna of the Faculty of Medicine, where Bobby Fischer, already
a Candidate in the previous year, is doing unexpectedly bad, coming in below 50%, amongst others Szabo on third position, Rossetto, Taimanov, Guimard, Evans, Olafsson, Unzicker, Gligoric, Benko, Uhlmann, Ivkov, Pachman, Wexler (beating
Fischer), Wade (beating Korchnoi), and legendary Eliskases. All-play-all with 20 players, those were the days!, Cordoba 1960; Budapest (Maróczy Memorial) 1961 (2 points ahead of Bronstein); Havana (Capablanca
Memorial) 1963 (ahead of Geller, Pachmann, Tal); Yerevan 1965 (international tournament in the armenian city Yerevan, organized to honour their world champion Petrosian, who was shared second with Stein, Portisch as best
foreigner came in as fifth); Gyula (Asztalos-Memorial) 1965, performing stratospheric 14.5/15p.! Viktor Korchnoi is no. 1 of the world in historical ELO (chessmetrics by Jefff Sonas) after winning Gyula (Asztalos Memorial), August 1965;
Korchnoi is achieving a stretch of nine wins in individual international (invitation or official) tournaments out of ten consecutive entries! The only tournament not to win was the (official) Sousse Interzonal 1967, with Korchnoi as runner-up behind Larsen. These nine won Invitation tournaments in a
row: Bucharest 1966; Sochi (Chigorin Memorial) 1966 (Polugaevsky took second place, Spassky tied for joint fifth place); Budva 1967 (ahead of Tal,
Gligoric, and Geller: USSR vs. YUG exceptionally played as an individual tournament); Leningrad International (50th Anniversary
October Revolution) 1967 (ahead of Kholmov, Barcza, Taimanov); Wijk aan Zee (Hoogovens) 1968 (won at first participation!, full three points ahead of the next guys, the trio Portisch, Hort, and Tal); Palma
de Mallorca 1968 (featuring the World Champion Petrosian, his Challenger Spassky, Gligoric, and Larsen), Sarajevo (Bosna) 1969; Luhačovice 1969 (ahead of Keres), and Havana (Capablanca Memorial) 1969
(with Suetin, ahead of Gligoric, Donner, Uhlmann);
Wijk aan Zee (Hoogovens) 1971 (ahead of Ivkov, Petrosian, Olafsson, Gligoric, second and last participation as USSR citizen); Hastings
1971/72 (with Karpov, ahead of Mecking, R. Byrne, Gligoric, Najdorf); Palma de Mallorca 1972 (with Panno, Smejkal, ahead of Andersson, Gheorghiu, Polugaevsky, Averbakh, Ljubojevic); Leningrad (IZT) 1973 (together
with Karpov, this was the last international tournament with both Karpov and Korchnoi for more than a decade (!) because of the boycott established after Korchnoi emigrated), Amsterdam (IBM) 1976 (with Miles, emigration just after
this tournament); Montreux (Palace) 1977; Beersheba 1978, Sao Paulo 1979 (with Ljubojevic); Buenos Aires (Konex-Canon) 1979 (again with Ljubojevic); GP South Africa (Oude
Meester, in four cities) 1979, Biel 1979, London (Phillips & Drew Kings) 1980 (with Miles, Andersson); Rome 1981; Bad Kissingen 1981 (full three points ahead of Hort,
Seirawan, then Sosonko); Rome 1982 (with Pinter); Wijk aan Zee (Hoogovens) 1984 (with Beliavsky); Sarajevo (Bosna) 1984 (with Timman); Beersheba 1984 (with Kudrin); Titograd
(40th Anniversary of Liberation of the city) 1984 (with Velimirović, Drago's biggest success, ahead of Tal,
all three attacking players par excellence, it was Korchnoi's first classical game with Tal since 1975); Brussels (OHRA) 1985 (ahead of Spassky); Tilburg (Interpolis) 1985 (with Hübner, Miles, ahead of Polugaevsky,
Ljubojevic, Timman); Zagreb (IZT) 1987; Beersheba 1987 (with Speelman); Wijk aan Zee 1987 (with Short); Royan 1988; Amsterdam (OHRA) 1988 (ahead of Nunn), Clermont
Ferrand (200th Anniversary of French Revolution) 1989(=); Beersheba 1990; Rotterdam (Euwe Memorial) 1990
(double rounded mini-tournament with four top ten players);
Korchnoi is sixty years young, according to the (then) regulations in a senior stautus;
of course, that doesn't bother him to play on and win: Las Palmas 1991 (with Topalov and Franco Ocampos); Harlingen 1991 (ahead of Timman, Piket); Antwerp (Volmac, later labelled
Lost Boys) 1993 (with Piket); Ostrava 1994; San Francisco "Pan Pacific" (50th Anniversary of the sigining of the United Nations'
charter in San Francisco) 1995 (ahead of Nunn, Gulko, DeFirmian, Hübner); Magistral de Madrid 1995 (aged 64 years; ahead of Salov, then ranked no. 3= of the world,
in a field with seven top-25 players, including Timman and Short, both in the mid-1990s Challenger in a title match, Jussupow, Beliavsky, plus Judit Polgar); Malmö (Sigeman & Co) 1996; St. Petersburg International 1997
(with Khalifman, Salov); Enghien-les-Bains 1997 (with Bacrot); Sarajevo (Bosna) 1998 (third participation, third win, scoring in total at Bosna +20 =16 -1); Bad Homburg 1998 (first big international
chess tournament to use the "soccer scoring", Korchnoi wins with 19 points, four points ahead of runner-up Svidler, already a top-ten player, followed by Jussupow and Torre with 13 points each); Arnhem (Sonsbeek SNS) 1999 (with Sadler);
Biel 2001 (just a few months after Korchnoi's 70th birthday, double round robin super-tournament, victory as clear first ahead of established Svidler, Gelfand, Grischuk, Lautier, and Pelletier who
had one win and one loss against his fellow countryman); Basel (ITAG Masters) 2003; Paks (Marx Gyoergy Memorial) 2004; Banja Luka 2007 (Garry took
Banja at his personal premiere aged 16, Viktor took Banja at his personal premiere aged 76).
In the 20th century, there was no rapid or blitz rating, and rapid or blitz events occured rarely on top-level until the mid-1990s. As a selection:
the range of Korchnoi's tournament wins in speed chess goes on from Leningrad City Championship Blitz in the 1950s to New York Blitz in the 1970s, from the Kettler-Cup Rapid
and the traditional Keres Memorial Rapid in Tallinn in the 1990s to Mainz (Unzicker Gala 80) Rapid 2005 (with Karpov) and Suzdal (Botvinnik Veterans Memorial) Rapid 2011
(convincingly and unbeaten won at age of 80).
In the Herceg Novi Blitz in 1970 (certainly the strongest five-minute tournament ever held to that date), overwhelmingly dominated by Bobby Fischer, Korchnoi
who was the only player to beat him, loosing the other game in a double round robin format, finally clear third (half a point to Tal, ahead of Petrosian, Bronstein, Hort, Smyslov, Reshevsky, etc.). It lasted more than a decade to the next big international
five-minute event, again at the same venue, Herceg Novi Blitz in 1983, Korchnoi was clear second behind only Garry Kasparov, one point ahead of Tal as third, Ljubojevic, Timman, Spassky, Larsen, etc. in a double round robin.
At USSR (led by Kasparov) vs. Rest of the World (led by Korchnoi, Speelman, Ljubojević and Portisch) Rapid in 1988 at Madrid,
eight rounds, Scheveningen system, time control of 25 minutes per game, Viktor Korchnoi, though the oldest in the field, achieved the best individual ElO performance of all players!
Korchnoi (both unbeaten +3=5), and Mikhail Gurevich (+4=3-1) scored the best individual point / percentage result, followed by Chernin 5, Portisch, Andersson, Dolmatov 4.5, Beljavsky 4, Ljubojević, Hjartarson, Nogueiras 3.5, etc. USSR beat Rest of the
World narrowly by 32.5:31.5. The event was a charity one: the organizers donated 18.5 million pesetas (ca. $160,000) to the UNICEF Childcare Aid Fund (source: http://www.olimpbase.org/1988g/1988in.html)
Btw.: Mikhail Gurevich (peak ranking no. 5= of the world in January 1990 and January 1991), had a splendid appearance at Madrid in 1988, but his fine results (as
all games) were not rated, because at that time, there was no rapid / blitz rating.
These three mentioned big international encounters in rapid or blitz, Herceg Novi, Blitz 1970 & 1983, and USSR vs. Rest of the World, Rapid, 1988
in Madrid, were arguably the most prominent such events during the 1960s/1970s/1980s. Viktor Korchnoi did not participate at Mazatlan, Mexico in 1988, labelled active chess and played parallel to the charity event in Madrid (Karpov beat Gavrikov in the
final after several equal extra-time games on tie-break scoring) and at the inofficial Blitz World Chess Championship in 1988 at St. John, Canada (won by Tal, beating Vaganian decisively in the final, Kasparov and Karpov knocked-out in previous stages).
In the one-off Brussels SWIFT blitz in 1987, Korchnoi beat Karpov twice, arriving in the mid-field (still ahead of Short, Tal, Larsen and others, but slightly behind Karpov), Kasparov won with distinction three full points ahead of Timman and Ljubojević as sole third.
The Melody Amber speed and blindfold series from 1992 to 2011, started when Viktor Korchnoi was already sixty years plus, he was shared third with Karpov and Ljubojević
in the inaugural edition after Anand and winner Ivanchuk, winning the second lap (pure rapid in this first event at Monaco). The Intel / PCA Grand Prix knock-out series (different cities) in rapid chess in the mid-1990s
were clearly dominated by younger players, particularly organizer Kasparov himself, Kramnik, Ivanchuk, Adams, and Anand, of course.