If Black does not reply symmetrically to 1.d4 by moving his own d-pawn, what arise are the Semi-closed Openings. These comprise for a large part the Indian Openings – the first move is 1...Nf6, which first of all prevents e2-e4. There are, however, some alternatives. The best-known of these is the Dutch Defence – 1...f5. Over and above all that, Black also temporarily sidestep the struggle for the centre with moves such as 1...e6 and 1...g6.