Douglas Griffin on X: Leningrad, April 1974. Photographed during their FIDE Candidates' semi-final match (which took place at the Dzerzhinsky House of Culture on Poltavskaya Ulitsa) - grandmasters Anatoly Karpov & Boris

Douglas Griffin on X: Moscow, 15th December 1971. Leonid Stein is

Douglas Griffin on X: Leningrad, April 1974. Photographed during