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Blackmar-Diemer Gambit: Netherlands Variation is a chess opening that arises after 1.d4 d5 2.e4 dxe4 3.Nc3 f5. It is classified D00 in the ECO system, and the position after these moves has white to move.
This line is a variation within the Blackmar-Diemer Gambit family. The strategic ideas above describe the family as a whole; this particular line reaches them by the move order 1.d4 d5 2.e4 dxe4 3.Nc3 f5.