Boris Spassky attends the opening ceremony of the World Rapid and News Photo - Getty Images

Boris Spassky attends the opening ceremony of the World Rapid and Blitz Chess Championship and the special screening of 'Pawn Sacrifice' at Kino International on October 9, 2015 in Berlin, Germany. Get premium, high resolution news photos at Getty Images

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Boris Spassky attends the opening ceremony of the World Rapid and News Photo - Getty Images

Secret negotiations, endless crisis management: How the '72 Summit Series became reality

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File:Boris Spasski 1.jpg - Wikimedia Commons

Secret negotiations, endless crisis management: How the '72 Summit Series became reality

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