The Stonewall structure carries many clues for the fight that will ensue. Here's the basic diagram:
For white, the fixed pawns on d4, e3, and f4 mean that white's dark-squared bishop will be "bad." It will have far less scope than white's light-squared bishop. A bishop on d2, for example, would be relatively inactive. By contrast, a Bishop on e2 would have many options.
And for white, the knights belong clearly on e5 and f3 or d3.
Black's light squared bishop would be the bad bishop, and so black would like to try to trade it off. The usual method is Bc8-d7-e8-h5. But in the following game, I managed to trade it off it two moves, not four.
I have also included about 100 games using this structure in which black also wins by playing Rg8 and g7-g5. Enjoy.
1.f4 d5 2.Nf3 Bg4 In the expectation of a stone-wall, with the aim of exchanging the bad light-squared bishop for the good knight 3.e3 [3.h3?! Bxf3 4.exf3= (4.gxf3 e5 Qh4+) ] 3...Nd7 threatening ...e5 4.h3 Bxf3 5.Qxf3 Black has exchanged off the bad queen's bishop and the white Qf3 block's the Nb1's path to e5 5...c6 defending the d-pawn and threatening e5 6.d4 Stopping ...e5, but now the Bc1 is "bad" 6...e6 7.Nd2 threatening e4 and en route to e5 via f3 7...f5 The stone wall has been built. Black stops e4. 8.Be2 Bd3!? 8...Bd6 Guarding the key e5-square and getting ready for Qe7 9.Qg3 Qe7 Protecting the g-pawn 10.0-0 Ngf6 Towards e4 11.c4 0-0 12.c5 further sealing in the Bc1 12...Bc7 13.Rb1 idea b4-b5 13...Ne4 theatening Ndf6 with a permanent Ne4 14.Nxe4 dxe4 Black now has Nf6-d5 15.Bd2 Kh8 Preparing the key Rf8-g8 g7-g5 maneuver 16.Qf2 Rg8 17.Kh1 g5 18.g3 Nf6 No need to release the tension. Better to build up first with Rg6, Nd5 and Rag8 19.Rg1 Nd5 20.b4 a6 21.a4 Rg6 22.Bc4 Qg7 23.Kh2 Qh6 24.Ra1 Rag8 25.Rad1 Bd8 26.fxg5 Rxg5 Diagram
