Annotated chess game

If white plays Bb5 here, a6, Ba4, g5, Bb3, in a well known scheme. The difference with the rook on b8 is that BxN cannot be considered a good move anymore. But in the given line, the R on b8 hardly makes any difference at all. I'm not sure it is good.

i would consider black two moves behind... a losing game

h5 just junk! 3.. f6 or 3.. Bf5. Nimzovitch preferred f6

This move makes really difficult for black to develop the kingside. Nice.

very nice.you destroy king side zone

Not he can't castle on either side (the kingside is wide open and the queenside rook has already moved).

Of course, f3 was not wise for black at this point. The "simple" exf3 is good for white. By exchanging, white can weak black's kinside, and attack in few moves.

nice sac!!

But white found an even more interesting way to take advantage of it. Very nice!

The computer is too materialistic in a human point of view. We all know these kind of positions are easier to attack than to defend. What did you have for the alternative 6...Be6?

I would probably retreat the bishop to e3 or d2.

on 6...Be6 white can continue developing with 7.Be2, as 7...fxg5 loses to 8.Nxg5! (for example 8...Bf7? 9.e6!). I think black is trying to complicate the position so that his lower-rated opponent will stumble, but that's rarely a good plan.

Black has to be dead lost after 9...Nh6. White just needs to open up lines. I'd try 10.Ne4+! dxe4 11.Nc3 Nb4 12.O-O-O, when Black has no counter to white's many threats. 10.c3 should lead to the same sort of thing, but it's not really necessary, and takes the c3 square away from the N on b1. If black plays Nxd4, he's only helping white to open up lines of attack.

Black could finally taken some profit from the Rb8 move, by playing b5. It allows the bishop to go out, and then Qe8. If black can exchange queens, a lot of pressure would be released from the position.

10.Nc3 looks solid to me.

GK computer doesn't know what it's talking about. Black was already dead lost last move. Black doesn't really have any good moves. His best try is probably 10...Nxd4 11.cxd4 c6, making a flight square for the K and also allowing his Q to get out and harass white.

after 11.Nd2 Na5 12.Ndf3 Kc6? (12...c5 is much better IMO) 13.Ne5+ Kb6, instead of , white has the much stronger 14.a5! Material doesn't really mean anything in these kinds of position, open lines and active pieces are much more important. For example (after 14.a4!) 14...Nc4 15.a5+ Ka6 16.Nc6. White is not only winning material, but his attack is still going strong.

13.Qxh6 Rxh6 14.Nf7+.

13.Qxh6 gxh6 14.Nf7+ Kxe6, 15.NxQ+, Kf6, and white must choose between try to save the knight on d8 after the bishop leaves his square, or to avoid Ne3, Nc2+, winning the rook. With more time it can be interesting to have a look at it.

Now black doesn't have a counter-threat based on Ne3, so BxN was indeed a very good move.

One gets an impression that the black bishops are not destined to have a healthy life...

Probably white should have dared more, or tried a different way to attack (among the many possibles, like hithercloc's suggestions). Still, it is a very good game against a much higher rated opponent.