Oswaldo Cruz Filho Oswaldo Cruz Filho Oswaldo Cruz Filho (1902/03 in Rio de Janeiro – ?) was a Brazilian chess master. He represented Brazil in 3rd unofficial Chess Olympiad at Munich 1936, in the 8th Chess Olympiad at Buenos Aires 1939 and the 10th Chess Olympiad at Helsinki 1952. He participated in many tournaments played in Rio de Janeiro; shared 3rd with Walter Oswaldo Cruz in 1943 ("Campeonato do CXRJ", Erich Eliskases won), took 2nd in 1943 ("Quadrangular Clube Ginastico Portugues", Eliskases won), took 9th in 1946 (Miguel Najdorf won), took 2nd, behind W. Cruz, in 1948 (the 16th Brazilian Chess Championship), tied
Oswaldo Cruz Cruz. As a child, he moved to Rio de Janeiro with his family. At the age of 15 he started to study at the Faculty of Medicine of Rio de Janeiro and in 1892 he graduated as medical doctor with a thesis on water as vehicle for the propagation of microbes. Inspired by the great work of Louis Pasteur, who had developed the germ theory of disease, four years later he went to Paris to specialize in bacteriology at the Pasteur Institute, which gathered the great names of this branch of science of that time. He was financed by his