She received the FIDE title of Woman International Master (WIM) in 1978.

Since the early 1970s to the late 1980s, she was one of the leading Polish women chess player.

From 1975 to 1989, Szmacinska played 15 times in the Polish Women's Chess Championship's finals and won eight medals: six gold (1975, 1976, 1981, 1983, 1986, 1988) and two silver (1977, 1979).

She won or shared first place in international chess tournaments in Lublin (1976), Piotrków Trybunalski (1978), Bydgoszcz (1977).

From 2004 to 2006, she won three medals at the Polish National Police Chess Championships, including gold in 2005.