<prompt> John Grantley Cooper owazalwa 14 May 1954 kuyinto Welsh chess International Master IM 1984, izikhathi eziyishumi Welsh Chess Championship winner 1976, 1977, 1978, 1984, 1985, 1992, 1993, 1994, 1995, 1996, kabili Chess Olympiad ngabanye isiliva indondo winner 1976  <response>: , 1984. 