Unable to play correct against isolani

12. Bc5 seams to be the first mistake

Does 47 Kf4 have any winning chances?

Hi,just wondering why not place the B on e3(having played first h3 to prevent Ng4) and forgo dxc5  ? In this way tension would be maintained.

Do you mean 9.h3 00  10.Be3 c4 11.Ne5 ?

I guess your move is better as it seems to be the mainline..

First 11 moves are book (though there are other ways to play for White)

12. Bc5 might be premature, as you suggested. Trading minor pieces when playing against an IQP is considered desirable, but really that's only true when your opponent's minor piece is actively placed. The same consideration applies in IQP position as it does in any other chess position: am I trading a not-so-good piece for a good one? I would hardly call Black's bishop on e7 an active piece. It even gets in the way of a rook on e8. And your bishop on e3 is a good piece. It controls the square in front of the IQP and blocks the e-file.

I think that Rc1, Nd4, or even h3 are more in the spirit of the position. After the sequence in the game Black has more or less equalized. Of course I have more thoughts on this game but it would be too much to write it all out at once. To answer your other question, 47. Kf4 does have winning chances.

Thank you, this was really helpful.

[COMMENT DELETED]

It seams I have calculation issues, haven't I ? I'm missing moves of my own but mostly of my opponent. Sometimes I don't go deep enough, maybe. What do you think, after seeing this 2 Rapid 15/10 games? 

From the games my impression is that you are very eager to blockade the IQP, but this is only the first stage and has to be followed up by attacking and destroying according to Nimzowitsch.

In your first game you have a nice grip on the position after move 25, but you seem to have no plan how to continue. I would try to play h3 followed by Ne2-f4 to force black to defend his pawn. I think b4 and a3 were wrong. Just imagine the endgame you had with your pawns on a2 & b3, then you could defend everything with a rook on d2...

In the second game 11.... Nb6 seems wrong (you already have full control of d5) and in the next game you played b6 which seems more logical.

And yes you are tactically vulnerable, especially against rook lifts.

For playing against the IQP the games of Karpov are instructive and for the play with IQP maybe Kortchnoi. Also there is a good book on the IQP and related pawn structures by Baburin "Winning pawn structures".

In the second game I played Nb6, because I couldnt find other location for my awkward placed knight from d7. Maybe I should have played Rfd8 and then Nf8 but it looked too passive. But I dont know what else I should have played.