Peruvian Women Grandmaster (2010). World U20 Champion in 2011, World U16 Girls Champion in 2009, Panamerican Girls U20 Champion in 2008 and the American Continental Women Championships in 2011, 2015 and 2017.
Best results: Open Internacional Renaldo Llerena Valencia 2007 (PER), 1-2nd; Capelle la Grande 2010, 11-33rd, World Girls championship 2010, 7th; Panamerican U20 2011, 3-4th; American Women Continental championship 2011, 2-3rd.
A regular participant at the Women World Championships and Women Olympiads since 2010. Deysi is the sister of Jorge Cori Tello another Peruvian chess star who became a Grandmaster at 14.
Peruvian Women Grandmaster (2010). World U20 Champion in 2011, World U16 Girls Champion in 2009, Panamerican Girls U20 Champion in 2008 and the American Continental Women Championships in 2011, 2015 and 2017.