Douglas Griffin on X: Karpov-Korchnoi, 18th match-game, FIDE Candidates' final, Moscow 1974. (Source: TASS, photographer: V. Savostianov.) #chess / X

Douglas Griffin on X: The @FIDE_chess Candidates quarter-final between Viktor Korchnoi (Switzerland) & Tigran Petrosian (USSR), Velden am Wörthersee (Austria), March 1980. #1, #2 The match in progress; #3 Petrosian & wife

Douglas Griffin on X: 50 yrs ago today - 4th July, 1973 - the #chess world was shaken by the sudden death, in Moscow, of one of its greatest talents - Leonid

Douglas Griffin on X: Wijk aan Zee, 1983. The 8th-round clash (played 23rd January) between Viktor Korchnoi & Ulf Andersson. The Swedish grandmaster won this encounter in 59 moves, on the way

Douglas Griffin on X: London, Nov-Dec 1983, FIDE Candidates' Semi-final, Garry Kasparov v. Viktor Korchnoi. (Source: This match, and the other semi-final between Smyslov and Ribli, took place at the Great

Douglas Griffin on X: Moscow, 25th February 1981. The 3rd round of the 'National Tournament of 4 Teams'. On board 3 of the match between the USSR 1st team & the USSR

Douglas Griffin on X: Some portraits from the Hoogovens tournament at Wijk aan Zee, January 1968, by the Dutch photographer E. Koch (ANEFO). Viktor Korchnoi & Mikhail Tal (USSR), Lajos Portisch (Hungary)

Douglas Griffin on X: Yerevan, May/June 1989. The Petrosian Memorial tournament. Veteran grandmaster Svetozar Gligorić (Yugoslavia) faces Vladimir Akopian (USSR). (Photo source: personal archive of V. Akopian, via #chess

Douglas Griffin on X: Two photos from the epic 1985 World Championship match between Anatoly Karpov and Garry Kasparov, which took place during September-November in the Tchaikovsky Concert Hall in the Soviet

Douglas Griffin on X: Wijk aan Zee 1968 - Viktor Korchnoi (USSR) is seen in play v. Aleksandar Matanović (Yugoslavia). In 'Chess is My Life' (1977), Korchnoi was to describe this game

Douglas Griffin on X: Four photos of the 19-year-old Garry Kasparov, pictured in play at the FIDE Interzonal tournament in Moscow, September 1982. Kasparov won this event with 10/13 (+7,-0,=6), thereby qualifying

Douglas Griffin on X: Viktor Korchnoi, pictured in play v. Boris Spassky in the Candidates' Final match that took place in the Belgrade at the end of 1977 and early 1978. In

Douglas Griffin on X: World #Chess Champion Anatoly Karpov (USSR) in play in an international tournament at Amsterdam, 18th May 1976. (Photo credit: R. Bogaerts / ANEFO, via @sovietvisuals /

Douglas Griffin على X: Viktor Korchnoi, pictured in play v. Anatoly Karpov in their 1981 World Championship match in Merano, Italy. (Photo credit: J. Cooke, Corbis.) #chess / X

Douglas Griffin on X: Tigran Petrosian, Viktor Korchnoi & Evgeny Vasiukov analysing the opening game of Tal-Botvinnik World Championship match, Moscow 1961. (Photographer: unknown, via ITAR-TASS archive.) #chess / X