<prompt> Kuandika mwendelezo kwa aya hii - Josef Kupper 10 Machi 1932 5 Juni 2017 alikuwa Swiss chess International Master IM 1955, mara tatu Swiss Chess Championship mshindi 1954, 1957, 1962 na Chess Olympiad mtu binafsi fedha medali mshindi 1954  <response>: , na 