<prompt> Bhala ukuqhubeka kwalesi sigaba - UJohn Grantley Cooper owazalwa ngo-14 Meyi 1954 ungumdlali we-Welsh chess International Master IM 1984, onqobe izikhathi eziyishumi ze-Welsh Chess Championship 1976, 1977, 1978, 1984, 1985, 1992, 1993, 1994, 1995, 1996, onqobe kabili i-Olympiad Chess silver medal 1976, 1984  <response>: Izindaba 