In January 2015, she took part in the Tata Steel Challengers tournament in Wijk aan Zee, the Netherlands, where she scored 5/13. At the Women's World Chess Championship 2015 Gunina made it to the third round, where she was eliminated by Pia Cramling, after knocking out Camilla Baginskaite and Olga Girya. In September 2015, she won the Moscow Women's Blitz Championship.