<prompt> Qedela umusho olandelayo: UJosef Kupper 10 Mashi 1932 5 Juni 2017 wayengumdlali we-chess waseSwitzerland International Master IM 1955, owawina kathathu iSwitzerland Chess Championship 1954, 1957, 1962 futhi wathola indondo yesiliva ye-Olympiad Chess  <response>: Ngo-1954 futhi ngo-1985. 