Career
Born in Helsinki in 1918, he became a Finnish National Master in 1938 and was the leading Finnish player between Eero Böök and Heikki Westerinen. He was perhaps best known for defeating world championship candidate, grandmaster Paul Keres, at Helsinki, 1960. Ojanen earned the FIDE International Master (IM) title in 1952 and the International Master of Correspondence Chess (International Minerals and Chemical Corporation) title in 1981.
Ojanen represented Finland in eleven Chess Olympiads: 1937, 1950, 1952, 1956, 1958, 1960, 1962, 1966, 1968, 1970, and 1972, playing first board from 1956 through 1966, thereafter playing second, after Westerinen.
In international play, he placed fourth at Oslo 1939, third of ten at Helsinki 1946, and seventeenth at Trenčianske Teplice 1949.