Buuxi weedha soo socota: Josef Kupper (10 Maarso 1932 <unk> 5 Juun 2017) wuxuu ahaa Swiss chess International Master (IM) (1955), saddex jeer oo ku guuleystay Swiss Chess Championship (1954, 1957, 1962) iyo Chess Olympiad abaalmarinta dahabka shaqsiga (
1954-kii)