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: Moscow, September 1966. The team championship of the Voluntary Sports Societies of the USSR. On board 1 of the 5th-round match between 'Spartak' and 'Avangard', Tigran Petrosian faces

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: '#Chess Life', August 1982. The cover features the Seirawan v. Karpov encounter from the recent London (Phillips & Drew) international. The American grandmaster defeated the World Champion, who

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: USSR, April 1975. The newly-crowned World Champion Anatoly Karpov is pictured at the chessboard with his father, Evgeny. (📷D. Donskoi, Novosti Press.) #chess / X

Douglas Griffin on X: Hastings, December 1971. Soviet GMs Viktor Korchnoi & Anatoly Karpov pose for a photo. They went on to share 1st-2nd place in the Hastings International, ahead of Mecking

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: 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: 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: Legends of the chessboard: Mikhail Tal v. @Kasparov63, in play at (I think) the Moscow TV tournament, 1987. (Photo credit: I. Utkin.) #chess / X

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: Via two photos by B. Dolmatovsky of Garry Kasparov, pictured in play via his famous victory against Vassily Ivanchuk in the 2nd round of the 55th 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)

The Karpov-Korchnoi Candidates' Final (Moscow, 1974), with annotations by Botvinnik.