Mikhail Botvinnik 3-time World Chess Champion and “Patriarch of the Soviet Chess School"

Mikhail Botvinnik was crowned the 6th World Chess Champion in 1948. He would attain the title twice more, regaining it from Smyslov in 1958 and Tal in 1961. 

As the first in a long line of Soviet world champions, Botvinnik was a respected figure even within an already strong Russian field.  His intense training regimen distinguished him from his peers. He advocated logic, extensive theoretical research, and a strong degree of both physical and mental discipline. While these attitudes were novel at the time, his writings on the subject became legendary and eventually served as a model for a new generation of players. His scientific style emphasized whole systems of play that extended from the opening to the endgame.  Botvinnik mentored and trained numerous young Soviet players, including a young Garry Kasparov.

Botvinnik retired from competitive chess play in 1970.

For more information click here to see a short biography of Mikhail Botvinnik.

(content of this post was taken substantially from  World Chess Hall of Fame)