The jungle of variations

Yesterday afternoon I played an interesting Blackmar Diemer - I didnt win the game, as I lost the way in the jungle of variations myself.

Guido De Bouver - Patrick Colemont
Belgian interclubs. 15-dec-2013.

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
All according to plan - the Teichmann defense

9...Nd5?! (diagram)

Luckily I remembered a great attacking line.
10.Bb5+ c6 11.0-0 (diagram)

11..f6 ?!
The correct move is 11...Nf6 and black should be better somehow, even if 12.Rf2 complicates things for black.

12.Nxg6 hxg6 (diagram)

Now it was turn to make an inferior move :-(
13.Nxd5 ?
The correct move 13.Bd3 should gave given me a small advantage

13...Nxd5 14.Bd3 (diagram)

The defender is better now, but black choose the inferior 14...Kf7.

The remainder of the game was quite spectacular after 15.Be4 Qxd4+ 16.Be3 Qe5, but I was able to secure a draw in a complicated queen versus two rooks endgame.

In any case, I will have to find a decent continuation after black's best move 11.Nf6