Originally posted by Winston Smith
Yes,you should've captured.Capturing with the pawn,4....,dxe4,kicks the knight so that may be best.
Probably you can't keep the pawn but White may have to allow a weakening somewhere in order to get it back.
Agreed. In the opening, blacks aim should be to equalise development.
h3 is a poor and passive move for white on move 4. Don't move pawns unless you have to - they can't go back again, and in this case weaken the Kings future refuge. White shouldn't be worrying about black moves - he should be forcing the issue himself!
With dxe4 you remove a key central pawn of whites (challenging this pawn is a key objective in blacks opening) and you force him to move a piece for a second time - away from its ideal square.
You dont have to worry about holding onto your pawn - the point is to regain tempo to develop another of your pieces. Let him waste time recapturing it, while you get on with mobilisation.
This way you also retain the very useful ..e5! at some point, grabbing a chunk of the centre and restricting his.