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: 40 years ago - World Champion Anatoly Karpov (USSR), pictured at the IBM International in Amsterdam, May 1981. (📷H. van Dijk (#1); M. Antonisse (#2, 3, 4) /

Douglas Griffin on X: The 1981 World Championship match between champion Anatoly Karpov (USSR) & challenger Viktor Korchnoi (Switzerland), Merano, October-November 1981. (📷J. Cooke, V. Rastelli / Corbis.) #chess / X

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: 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: 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

Douglas Griffin on X: 50 years ago this month - Mikhail Tal and Viktor Korchnoi, at Wijk aan Zee, January 1968. Korchnoi won this tournament by a huge margin, finishing 1st with

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: 40 years ago - World Champion Anatoly Karpov (USSR), pictured at the IBM International in Amsterdam, May 1981. (📷H. van Dijk (#1); M. Antonisse (#2, 3, 4) /

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 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: The 'Tournament of Peace', Rovinj/Zagreb, Yugoslavia, 1970. Bobby Fischer is seen in play in what would prove to be a theoretically important game v. Dragoljub Minić in the

X 上的Douglas Griffin：“40 years ago, the World Championship match between Anatoly Karpov & Viktor Korchnoi was under way. One of my earliest # chess memories is reading the score of the 1st

Douglas Griffin on X: Moscow, 2nd July 1968. Viktor Korchnoi and Mikhail Tal are pictured in analysis of the 4th game of their Candidate's Semi-final match, as Semyon Furman looks on. (📷

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