In 2003 Denise Frick became a Woman FIDE master (WFM), and in 2004 she received the title of Woman International master (WIM). In 2005, in Cape Town she won the Republic of South Africa Women's Chess Championship, and in Lusaka won a bronze medal in the African Women's Chess Championship. In 2011, in Maputo, she won a bronze medal (her second medal) in the African Women's Chess Championship. In 2012, in Khanty-Mansiysk she made her debut at the Women's World Chess Championship, where she lost in the first round to Humpy Koneru. In 2014 in Windhoek, she won in the FIDE zonal tournament of Africa.