<prompt> Tlatša polelo ye e latelago: John Grantley Cooper yo a belegwego ka la 14 Mei 1954 ke Welsh chess International Master IM 1984, mofenyi wa Welsh Chess Championship ka makga a lesome 1976, 1977, 1978, 1984, 1985, 1992, 1993, 1994, 1995, 1996, mofenyi wa sefoka sa silifera sa Chess Olympiad ka makga a mabedi 1976,  <response>: 1984. 