I'd be very tempted to play 14.Bxa6 bxa6 15.0-0 at this point. An alternative might be to play 14.Nd4, as 14...e6-e5?? lost Black his Queen, and then follow with 15.Bc4. Or White could play 14.Bc4 and then castle. Plenty of attractive possibilities.

an interesting suggestion archduke_piccolo. I thought about the pro's and con's of BxN. On one hand weakening his queen side pawn structure and creating a passed pawn on c5, on the other hand my Bishop is better than his out of position Knight

I don't like this plan, as it seems to be to give up much of White's edge. Of the possible plans I mentioned in my previous note, 14.Bc4 seems to me the strongest.

I prefer the knight recapture, as the backward d-pawn after the pawn recapture would have been a target for Black.

Agree. It was also possible to play 16.Bxa6, and that looks fairly promising: [a] 16...bxa6 17.Nf3 or [b] 16...exd4 17.Bc4ch Kf8 18.0-0-0.

Badly mistimed I think. Effectively, White has wasted a tempo. Instead, I was looking at 17.Ne6ch Bxe6 18.Bxe6 with a biggish edge. But the notion of 17.Nb5 and 18.Nd6 jamming up the works for Black looks even stronger.

Here we see the consequences of checking and then playing Bxa6. It had to be Bxa6 and THEN (if allowed) Bc4ch. White can not now hoik the bishop out of trouble with a check (see my comment to White's 16th move).

Uncheck...

Pawns are level, and White has a central isolated pawn. BUT: he still has his Q-side majority!

I have a high opinion of 21.Rd4! Black dare not exchange on d5 as White would then obtain a very powerful pawn roller.