Input (grade 8): He was a Candidate for the World Chess Championship on eight occasions (1948, 1950, 1953, 1956, 1959, 1965, 1983, and 1985).
Output (grade 8): Vasily Smyslov (24 March 1921 - 27 March 2010) was a Russian chess grandmaster, and World Chess Champion from 1957 to 1958.