Bulgarian Grandmaster (1990). Bulgarian Champion in 1983 and 1988. Vice Champion in 1985 and 1994. Donchev was awarded a bronze medal for the third best individual performance at board 2 at the European Team Championship in 1989. Won or shared first at Varna 1978, Bratislava 1983,
Best results: won or shared first at Varna 1978, Bratislava 1983, Asenovgrad and Burgas 1985, Asenovgrad 1986, Kessel 1988, Villeneuve Tolosane 1989, Mlada Boleslav Open 1992.
A participant in the 1982 and 1988 Olympiads. Retired from international chess since 1997.
Bulgarian Grandmaster (1990). Bulgarian Champion in 1983 and 1988. Vice Champion in 1985 and 1994. Donchev was awarded a bronze medal for the third best individual performance at board 2 at the European Team Championship in 1989. Won or shared first at Varna 1978, Bratislava 1983,