Stonewall attack - what to do with black Knight on d5?

The Stonewall Attack cannot be played as a catch-all opening with expectations of being able to get anything out of it.

There are only certain circumstances where the Stonewall setup from the White side is effective.  Pick up Tim Taylor's book on Bird's Opening.  It's not the latest theoretical work on it, but it best explains when the Stonewall Attack is effective versus not.  That is, explained via actually studying it and the chapters on the Reversed Classical as well - not explained as in "here you go little boy, just read these two sentences and you are all set" - uhm, NO!)

I don't play this junk, but if I remember right, I believe one of the stipulations is that Black has to have played ...d5.  There are other items as well, but the fact that he didn't here already tells me the Stonewall Attack is garbage in this case!

Stonewall is for chumps!

Maybe there is something helpful in Chess Psychology: The Will to Win by William Stewart.

https://web.archive.org/web/20140708105336/http://www.chesscafe.com/text/review901.pdf

After 1 d4 e6 2 e3 d6, is it perhaps already time to go off script?

Stonewall, as is any opening system, is merely a desired initial setup in an abstract position; you shouldn't always play Stonewall, ignoring what your opponent does, nor should you keep your pawns in the same position for the rest of the game. 5. c4 is a good enough move, and you get a strong central control, while your opponent doesn't have a single well-developed piece.

If you reeeeeeally want to move the knight to d2 before moving any pawns, you can play 8. Qe2 and then 9. Nd2, but I wouldn't recommend that, as it doesn't address the actual situation on the board.

Here are a couple of ideas: 1) you may try not castling quite so early: use the extra move to work at punting the N at d5 out of there. You have g3 to do double duty keeping black's B and Q away from h4 and it also supports the pawn at f4. 2) punt the N at d5 out with c4 and let him trade the N for your B. This now puts your Q at d3 behind a small wall of pawns, so you can start developing your Qside pieces.

I used the Stone Wall attack for a while just to see what it good for, and discovered it was better for defense than attack.  But to answer question I would move the pawn to c4, she will move her knight or attack one of your pawns.

Before black gets in f5, you should play e4.  You get a strong center and after e5 a space advantage and a premade attack.  The knight will lose time going to b4, so you can waste time with saving the LSB.  Since the king's knight left, you could even accept the trade and, after cxd3, have even more control in the center.