Main lineA45 1. d4 Nf6 2. f3 In the centre, White holds d4. 1. d4 Stakes a claim in the centre, controlling e5, and frees the bishop and queen. 1... Nf6 Develops the knight to f6, eyeing d5 and e4. 2. f3 Fights for e4 from the flank - contesting the centre without committing a centre pawn. Theory calls this the Paleface Attack.