Black declines a trade of pawns. 11. Bxf4 BxBf4 12. g3xBf4 is possible, but probably not in white's best interest. Not this early on anyway.

Adding to the king side assault and setting up for Ne7+. Which would lead to Kf8 NxRh8 KxNh8. Giving white a Rook for a Knight.

Blocks Ne7+, however black is now in a tough position.

Threatens QxRg8+ which the knight cannot defend. Black's only response would be Bf8 blocking the queens check. However, QxBf8++ is playable, as is Be7, QxBf8++.

Black tries to push whites queen back or set up the trade QxRh8?? NxRh8. White has another option.

White's alternate option. Now if black takes white's knight he can take back yet again with his queen putting black's king into check.

Getting nearly equal material for the rook. Was a good move, I didn't see it until it was too late, but I wouldn't have played things differently anyway.

White starts breathing down black's neck, he's trying to get a quick kill.

Now white cannot play QxBf8, but white has other strong options.

Wins a knight. A quiet developmental move like 15. Nc3 I believe is playable here.