<prompt> Bhala ukuqhubeka kwalesi sigaba - uHorowitz wayengumdlali oholayo e-U.S. phakathi nawo-1930 nawo-1940. WayenguMpetha wase-U.S. Open ngo-1936, 1938 no-1943. Ngo-1941, walahlekelwa umdlalo 0313 noSamuel Reshevsky we-US Chess Championship. Wadlala eqenjini lase-U.S. Emidlalweni emine yama-Olympic Chess, ngo-1931  <response>: Emdlalweni odumile womsakazo we-USA ne-USSR ngo-1945, uHorowitz wathola enye yezinqola ezimbili kuphela e-US ngokunqoba i-GM Salo Flohr. Wahlukanisa umdlalo omncane wakhe wemidlalo emibili ngokumelene noFlohr, futhi ngo-1946 edition yomcimbi ofanayo, wahlukanisa umdlalo wakhe omncane ngokumelene no-Isaac Boleslavsky. 