Mikhail Botvinnik became world champion in 1948 and remained so until 1963. During this time he either successfully defended his title against David Bronstein, Vassily Smyslov and Mihail Tal or got it back in a return match. The systematic, scientific method of working in chess begins with Botvinnik. He studied openings with respect to their typical middlegame structures and for those he developed successful strategies. The strategic approach runs like a red thread through Botvinnik’s work. Towards the end of his active career, the 6th world chess champion, known in the Soviet Union as the “patriarch”, founded a chess school and passed on his knowledge to numerous bright students. Amongst his students were, for example, Garry Kasparov and Vladimir Kramnik.