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Chess Opening Theory/1. Nc3/1...f5
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Van Geet Opening A00 Van Geet Opening
Van Geet Opening
1...f5
Black plays in similar fashion to the Dutch Defence, controlling e4 with the f-pawn and is likely to double down on it with Nf6 or try a Stonewall-like or Leningrad-like setup with e6 or g6. However, since the knight on c3 already controls e4, this move is not as effective as 1...f5 against 1. d4 or 1. Nf3.
2. e4 immediately contests the f5 pawn and is the most accurate move. 2...fxe4 3. d3 is the aggressive Klüver Gambit.
2. d4 transposes to the Raphael Variation of the Dutch Defence (1. d4 f5 2. Nc3).
2. e3 opens up the f1 bishop.
2. d3 opens up the c1 bishop and controls e4.
References