In 1975 Bożena Sikora-Giżyńska won Polish Junior Chess Championship.
From 1975 to 1992 Bożena Sikora-Giżyńska played 17 times in the Polish Women's Chess Championship's finals.
[2] Also Bożena Sikora-Giżynska won gold medal in Polish Team Chess Championships (1990).
[3] Bożena Sikora-Giżyńska won or shared first place in an international women's chess tournament in Nałęczów (1982, 1983), Iwonicz-Zdrój (1985) and Prague "Bohemians" (1987-1990, 1992).
Bożena Sikora-Giżyńska played for Poland in Women's Chess Olympiads:[5]