True, but Ba6 still comes in, making it hard to play...

From white side of view, he should play rook to e1 if he wants to play d4 idea. You are right, if black plays ...Ba6 right away after that white can't play d4. Then again, he can do e6 push idea again and it would be all different game of course without being that exchange down.

Yes I did actually. I looked at Nf5 16. Queen moves, e6 17. g4 and either my knight goes back to h6 and perhaps exchanged, or it goes to e7 blocking my bishop, which is why I decided it was better to send my bishop out to g7. Perhaps Nf5 16. Queen moves, g6 is best?

Okay, lets look at the position after: 15...Nf5 16.Qa4(most likely, keeping the pressure on c6-pawn) e6 17.g4 then you absolutely should play 17...Ne7 as you are in no hurry. Knight jumps on good square g6 from there and I really like black in that position. So 15...g6 is not bad but 15...Nf5 plan seems to be the most accurate one keeping that e6 move away from whites arsenal.

I think there were a number of lines Shredder looked at, such as 21...b4 22. Nb5 and then Rc8 or 0-0-0. Yes White is rather active and Black's pieces unco-ordinated, but Black is the exchange up!

How does Shredder continue after 21.Na3 as I can't see how it is equal. White seems to be doing really good in that continuation. Okay, I decided to take my board and play it on: 20.Qxb5 cxb5 21.Na3 b4 22.Nb5 and then [22...Rc8 23.Nc7+ Kd8 24.Nxd5, maybe I am just blind but I can't see what is that shredder plan. 24...Nf5 25.Rd1 Nd6 26.cxb4 axb4 27.Nxb4, what then, 27...h5(maybe) 28.Nd4 Bh6 29.Ndc6+ Ke8 30.Bxd6 exd6 31.Rxd6, I don't think this is the line Shredder prefers]. So lets look at the other one: [22...0-0-0?!, I just don't like this, 23.Bc7!, I prefer white as black king is not secured while his other pieces are stuck for defence and white should be able to use that advantage]. I think that I missed something on 22...Rc8 but 22...0-0-0?! seems too dangerous for human to play if there isn't some logical saving resource.