Annotated chess game

the reason the double fianchetto usually doesn't work is that it's too ambitious, trying to cover all colors of squares in the center. You usually don't have enough pieces to make that work. Having said that, here I'd try it anyway because there really is no place else for DSB, and Black can easily trade the LSB in a few moves.

I meant the bishop sacrifice as in the game.

Giving up the pawn on e7 and allowing the rook into black's position feels like a mistake. On the other hand it seems a little hard to suggest something else for black here. Bf6? seems bad but might hold, king will be stuck in the center after Bh6 though. Still can't take the pawn on d5 because of Nc7 at the end. d6 is normally desired in these structures...but pawn is pinned to the king. what to do.

13...e6 might be the go. It isn't easy to find any decisive follow-up for White after 14.dxe6 fxe6 15.Qd2 or 15.a4.

14...Bxd5 kept Black in the hunt.

Black can't take the DSB off the board this way. As the duke says 14..Bxd5

Now all you need is your Q to come to h6!

Instead, 15...Qd6 16.Qe1 Bxd5 17.Qe3 Nc6 18.Qd2 ... Threatening 19.Rd1 or Bc4 wins for White.

After 15...Qd6 Fritz is telling me that 16. Qe1 or Qe2 are best, and after Bxd5 17.Qe3 Nc6? 18. Bxc6! wins for white.

You are currently down a piece but at least right now seem to have compensation with all that piece activity.

Those weak squares on the K-side will be a constant worry for Black. His army is quite on the wrong side of the battlefield.

Possibly a less costly defence might have been offered by 16...Ra4!? 17.Qh6 Rd4.

Yes, at first Fritz liked 16....Ra4 but rejected it after 17.Qh6 Rd4. 18. Re4 Qd3 19. BxRd4 cxBd4 20. Rh4! g5 21. Qxg5+ Qg3 and white has regained the exchange and a pawn and black's king is still exposed.

He is threatening, but I'm sure the defense didn't trouble you very much.

This one is easier to get around. But 18...Ra4 19.Qh6 Rd4 20.Bxd4 cxd4 21.Re4 Qf6 22.Rh4 Qh8 23.Rd1 seems to give White a winning end game.

Fritz prefers 18...Ra4 19.Qh6 Rd4 20.Bxd4 cxd4 etc.

Again, the defense isn't all that tough for you to find, while black's position is nearly fatal.

It is remarkable how strong White's attack is with just the pieces (including the unassuming rook on a1, patiently awaiting the slip of the leash...). Possibly ...g5 might have been worth a look, but White will enter the end game a bishop ahead: 19...g5 20.Qxg5ch Qg6 [forced] 21.Qxg6ch hxg6 22.Rxb7 ... and wins.

Quite right again! Fritz prefers ...g5!