Anatoly Karpov, born 23 May, 1951, is one of the strongest players in the history of chess. He was World Champion from 1975 to 1985, finished first in 160 strong tournaments, and was the world’s number one for 102 months. However, he seemed to win many of his games without much effort, without striking moves or crushing attacks. But he had a secret weapon – which Jan Markos analyses in more detail. | Photo: V. Savostianov, Novosti Press (via D. Griffin)