Vasily Vasilyevich Smyslov was a Soviet and Russian chess grandmaster who was the seventh World Chess Champion from 1957 to 1958. He was a Candidate for the World Chess Championship on eight occasions
Smyslov in 1977
Botvinnik vs. Smyslov (right) at the World Chess Championship 1957
Smyslov at the Amsterdam Interzonal in 1964
Karpov (left), Euwe (bottom) and Smyslov at the 1977 Tilburg chess tournament
Mikhail Moiseyevich Botvinnik was a Soviet and Russian chess grandmaster who held five world titles in three different reigns. The sixth World Chess Champion, he also worked as an electrical engineer
Botvinnik in 1962
Botvinnik vs. Lasker, 1936
Levenfish vs. Botvinnik (right), 1937