<prompt> Bhala ukuqhubeka kwalesi sigaba - USteiner wayeyilungu lamaqembu e-United States Chess Federation athunyelwa phesheya e-Chess Olympiads eHague 1928, Hamburg 1930, Prague 1931  <response>: neDubrovnik ngo-1950. Njengoba ayengumpetha wase-U.S. wayekaputeni weqembu lika-1950. 