Chess Opening Theory/1. d4/1...Nf6/2. c4/2...g6/3. Nc3/3...d5/4. cxd5

=Grünfeld Defence - Exchange Variation= White captures the lone central black pawn and forces Nxd5, after which White can create a huge center with e4.

Theory table
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'''1. d4 Nf6 2. c4 g6 3.Nc3 d5 4.cxd5'''