World Chess Championship Candidates Match in Leningrad

April 1974. USSR. Leningrad. International Grandmaster, two-time USSR Champion, World Champion, Soviet chess player Boris Vasilyevich Spassky and International Grandmaster, winner of chess Olympiads as part of the USSR national team, winner of the "Chess Oscar" prize Anatoly Evgenievich Karpov (from right to left) during the semi-final match of the candidates for the world chess championship in the F.E. Dzerzhinsky Palace of Culture. The semi-final ended with the victory of A.E. Karpov with a score of 4:1. The exact date of the photo is unknown. Nikolay Naumenkov/TASS