<prompt> Pedzisa mutsara unotevera: Botsari akamiririra Greece muOlympiads gumi neshanu dzeChess kubva muna 1986 kusvika muna 2014. Migumisiro yake yakanakisisa yakanga iri pa  <response>: 28th Chess Olympiad muThessaloniki muna 1988, kwaakawana 8.512 uye akapedza wechitanhatu pabhodhi rekutanga rekuchengetedza, uye 35th Chess Olympiad muBled muna 2002, kwaakawana 8.513 aine chiyero chekuita che2435, kuti apedze wechipfumbamwe pabhodhi rimwe. 