This app is a deep dive into Be7 variation of the Queen’s Gambit Declined. In a style, that you might be familiar based on chessopenings.com video tutorials, national master Dereque Kelley covers over 90 minutes of material across 13 chapters. App contains exercise to train memorization of 43 different lines. Those exercise are split up in 9 different sets and follow up chapter's explanation of the specific set of lines.There are also a set of 12 annotated games showing how the progression of the game goes from opening to the end for the games with Be7 variation of Queens Gambit Declined.Designed by Dereque Kelley & Alex Burba