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Queen's Pawn Game: Modern Defense is a chess opening that arises after 1.d4 g6. It is classified A40 in the ECO system, and the position after these moves has white to move.
This line is a variation within the Queen's Pawn Game family. The strategic ideas above describe the family as a whole; this particular line reaches them by the move order 1.d4 g6.
Each of these is a named opening reached by playing on from 1.d4 g6. Open any of them to load the position on the board.