Australian Master and national champion from 1932 to 1934 and 1939 to 1945.
Koshinsky was born in Russia and for a few decades he actively ran chess in Australia as represented it to FIDE and was elected FIDE Vice President in 1962.
He also participated in the Olympiads of 1964, 1968 and 1970.
Australian Master and national champion from 1932 to 1934 and 1939 to 1945.