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1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d5 5.cxd5 Nxd5 · ECO D71
Neo-Grünfeld Defense: Exchange Variation is a chess opening that arises after 1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d5 5.cxd5 Nxd5. It is classified D71 in the ECO system, and the position after these moves has white to move.
This position can also be reached by another move order, including 1.c4 Nf6 2.g3 g6 3.Bg2 Bg7 4.d4 d5 5.cxd5 Nxd5 6.Nf3.
This line is a variation within the Neo-Grünfeld Defense family. The strategic ideas above describe the family as a whole; this particular line reaches them by the move order 1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d5 5.cxd5 Nxd5.