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

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

Douglas Griffin on X: Hidden away in the Dutch regional photo archives: some shots of the young @vishy64theking in action at Wijk aan Zee, v. Vitaly Tseshkovsky & Viktor Korchnoi, in 1989

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: Moscow, 22nd September 1969. Ex-World Champion Tigran Petrosian is pictured in play v. Evgeny Vasiukov in the 11th round of the 37th USSR Championship. Petrosian won the title

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: 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: London, November 1983. At the FIDE Candidates' Semi-final match, Garry Kasparov faces Viktor Korchnoi; talking to Korchnoi is Svetozar Gligorić, one of the match arbiters. (Photo credit: unknown

Douglas Griffin on X: Some more scenes from the match. #1 The 7th match- game in progress. #2 Korchnoi at the board. #3 Petrosian at the board. #4 The ex-World Champion takes a

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: 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: 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: Anatoly Karpov & Mikhail Tal, pictured in play during the 39th USSR Championship, Leningrad, September-October 1971. (Photo: N. Naumenkov / TASS.) #chess / X

Douglas Griffin on X: The programme for the 1974 FIDE Candidates' final between grandmasters Anatoly Karpov & Viktor Korchnoi. The match took place in the Hall of Columns of the House of

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