Original: His short reign atop the chess world made him one of the two so-called '' winter kings '' who interrupted Botvinnik 's long reign from 1948 to 1963 ( the other was Smyslov , world champion 1957 -- 1958 ) .
Simplified: Tals short reign atop the chess world made him one of the two so-called winter kings who interrupted Botvinniks long reign from 1948 to 1963 ( the other was Smyslov , world champion 1957 -- 1958 ) .