In the late 1970s Borisova was one of the leading Bulgarian women's chess players. She participated several times in the finals of the Bulgarian Women's Chess Championship and won four medals: gold (1976), two silver (1972, 1977) and bronze (1975). After leaving for Sweden she belonged to the top chess players of this country. In 1974, she was awarded the FIDE
Woman International Master (WIM) title. Since 1979, she lives in Sweden and is one of the best Swedish women's chess players. Borisova participated twice in the Women's World Chess Championship Interzonal Tournaments: • In 1979, at
Interzonal Tournament in
Rio de Janeiro ranked 10th place; • In 1982, at
Interzonal Tournament in
Bad Kissingen shared 12th-13th place. In the following years, in the Women's World Chess Championship Zonal Tournaments she took the third place twice (in 1985, in
Eksjö behind
Pia Cramling and
Nina Høiberg, and in 1987, in
Gausdal behind Nina Høiberg and
Christina Nyberg), but not winning promotion to the next stage of the Women's World Chess Championship competition. In 1985 and 1989 she represented Sweden in the chess team Nordic Cup, and in 1985 winning the team gold medal. Borisova played for Sweden in the
Women's Chess Olympiads: • In 1978, at first board in the
8th Chess Olympiad (women) in
Buenos Aires (+7, =3, -1) and won individual bronze medal, • In 1980, at first board in the
9th Chess Olympiad (women) in
Valletta (+5, =4, -2), • In 1982, at second board in the
10th Chess Olympiad (women) in
Lucerne (+5, =5, -4), • In 1984, at second board in the
26th Chess Olympiad (women) in
Thessaloniki (+4, =3, -3), • In 1988, at second board in the
28th Chess Olympiad (women) in
Thessaloniki (+4, =1, -5), • In 1992, at second board in the
30th Chess Olympiad (women) in
Manila (+7, =2, -3) and won individual bronze medal, • In 1994, at second board in the
31st Chess Olympiad (women) in
Moscow (+5, =2, -4). ==References==