<prompt> Qedela umusho olandelayo: USteiner wayeyilungu lamaqembu e-United States Chess Federation athunyelwa phesheya e-Olympiad Chess eHague ngo-1928,  <response>: IHamburg ngo-1930, iPrague ngo-1931 neDubrovnik ngo-1950. Njengoba ayengumpetha wase-U.S. wayekaputeni weqembu lika-1950. 