In 1990, Natia Janjgava participated in USSR Women's Chess Championship final and ranked 18th place. She participated in European Youth Chess Championships and World Youth Chess Championships where best result reached in 1991 in U20 girl's age group when ranked in 5th place. In 1993, in Polička Natia Janjgava shared first place in International Women's chess tournament. In 1994, she won Georgian Women's Chess Championship. In 1995, Natia Janjgava participated in Women's World Chess Championship Interzonal Tournament in Chişinău where ranked 49th place.