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: 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: 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: 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: 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: 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: Analysis of the 10th match-game Korchnoi-Kasparov from the Candidates' Semi-final in London, 1983. L to R: A. Zeinalli, A. Nikitin, E. Vladimirov, G. Kasparov, G. Timoshchenko. (Source: Kasparov

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: 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: 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

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

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: 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: Aleksandr Kotov, in play v. Grigory Levenfish, 17th USSR-ch, Moscow 1949. (Source: unknown.) #chess / X