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