A Caro-Kan game

I played this game in an OTB tournament a few hours ago. My opponent was a 1900+ rated player. Any comments are welcome.

6. c3 doesn't look right to me. You may want to castle long because of the open g-file. You should be able to look this up in a database or opening book and see what masters play in this position. I am somewhat attracted to 6. Bf4 with the idea of just trading that bishop on b8 and playing a pawn to f4 with a bind on the e5 square. This will restrict black from opening the position. Something simpler may be called for with just 6. Be3 though.

I generally don't like to fianchetto if my bishop can easily be developed the other direction. Why not 8. Bd3 to challenge white's piece. 

I prefer 11. b4 starting to storm the black king.  

Thanks for the comments. And yes, I agree that 11.b4 was better. As for c3, I found a very few games in my database (I have the Megadatabase 2007 from chessbase) and that was the standard move. First c3 and then a fianchetto of the light squared bishop.

6. c3 doesn't look right to me. You may want to castle long because of the open g-file. You should be able to look this up in a database or opening book and see what masters play in this position.

I checked my database, and 6.c3 is the most common move, played by both Anatoly Karpov and Nigel Short. Regarding 5...gxf6 Andrew Martin writes, "This line was introduced by Aron Nimzowitch at the beginning of the 20th century. It always leads to a very sharp and complicated game. By voluntarily damaging his pawn structure Black hopes to obtain active counterplay by exploiting the open g-file. Although nowadays this line has a rather dubious reputation and is rarely played at the top level, it remains a useful weapon for the club player." He mentions 6.Ne2, 6.Nf3, and 6.Be2 as reasonable alternatives.

The first out-of-book move is 9...Qd7. Although g3 should still be the strongest reply. The following annotation addresses your concern about castling kingside with an open g-file:

"8.g3! - This is one of the best plans in this line, and I believe it is the system which more than any other is discouraging Black players from 5...gxf6. After developing his Bishop to g2 White can easily castle kingside, as now Black has no pressure on the g-file. Of course the fianchetto should be combined with developing the Knight to f3 as in this game, and not to e2 as Black will then play h5-h4 with good chances."