It only gets better

I always had problems dealing with the line 1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 Bg4 6.h3 Bh5 7.g4 Bg6 8.Ne5 e6 9.Qf3 c6 10.g5 Ng8 (diagram)

Black retreats his horseman back to square null - safety first. Guess his reasoning is something like "Show me what you have for the pawn !".

And indeed, I have always been struggle with thius move as I could not find an immediate punishment. But now, I finally found the way to victory for white ( rather appropriate wording on this 11th november, when we remember the end of the Geat War ).

The right move is 11.Bd3 Qxd4 - black is obliged to take the pawn to stay in the game as 11...f5`12.gxf6 Qxf6 13.Qg3!! Bxd3 14.Bg5 Qf5 15.cxd3 does not look good at all for black (diagram).

Back to the main line after 11.Bd3 Qxd4 12.Nxg6 hxg6 13.Rf1 (diagram)

Only 13...Qh4+ is feasible here, follwed by 14.Rf2 Bc5 15.Qxf7+ Kd8 16.Ne4.

As 16...Bb6 now fails to 17.Qxb7, black has nothung else than 16...Bxf2+ 17.Nxf2 (diagram). Black is a lot of material ahead, but white has sufficient comprensation :

a/ 17...Nd7 18.Bd2
...a1/ 18...Ne7 19.0-0-0
......a1a/ 19...Nd5 20.Ne4 (+=)
......a1b/ 19...Rf8 20.Qxe6 Rxf2 21.Bc4 (=)
......a1c/ 19...Kc7 20.Qxe7 (+=)
......a1d/ 19...Ne5 20.Qxe6 (++)

...a2/ 18...Kc7 19.Bf4+ (+=)

...a3/ 18...Ne5 19.Qxb7 (+=)

b/ 17...Ne7 18.Bd2 Nd7 ( see a1 )

c/ 17...Qb4+ 18.Bd2 

...c1/ 18...Qe7 19.Qxg6 (+=)

...c2/ 18...Qxb2 19.Qf8+ Kc7 20.Rd1 (++)

So it seems that white had nothing to fear from the timid 10...Ng8 reply in the Teichmann defense