<prompt> Pedzisa mutsara unotevera: Steiner aiva nhengo yezvikwata zveUnited States Chess Federation zvakatumirwa kunze kwenyika kuChess Olympiads muThe Hague 1928, Hamburg 1930, Prague 1931 uye  <response>: Dubrovnik 1950. Somukundi weU.S. ari kutonga akanga ari kaputeni wechikwata cha1950. 