Austrian International Master (1955) born in Hungary.
Austrian Champion in 1954, 1956 and 1977. He was awarded a gold medal for the best individual score on board 2 at the 1958 Olympiad. Certainly, unusually, Duckstein has defeated three world champions (Euwe, Botvinnik, and Spassky)!
Best results: Hastings 1958-59, 5th; Arleshiem 1961, 2nd; IBM Amsterdam 1964, 3rd; Palma 1964, 4th; Biersack 1971, 2nd-3rd; Vienna Open 1990, 3rd; World Senior 1991, 3rd-6th; Ernst Stoeckl Memorial 2002,1st.
A participant in the Olympiads from 1956 until 1988.