<prompt> Bhala ukuqhubeka kwalesi sigaba - UPeicho Peev ; 2 April 1940 15 September 2007 wayengumpetha wamazwe omhlaba we-chess waseBulgaria 1973. Umnqobi we-Bulgarian Chess Championship 1968 nomnqobi wezindondo zethusi weqembu le-Chess Olympiad 1968  <response>: Izindaba 