Modern Chess, Opening Databases, 2019.
Welcome to the second and final database dedicated to Queen's Gambit Declined. In Part 1, GM Marin has dealt with all the systems based on Bg5. This database mostly features the lines in which White opts for Bf4 via different move orders. The repertoire is very practical. When possible, Marin suggests rare and relatively unexplored continuations. Of course, all the lines have a solid positional foundation. The database includes three sections - Pawn structures, Theoretical Part, and Test Section.