game decided on unclear position for me

I hate when I read some game and I see that some player resigned but the position is still unclear for me...
see this(from chessbase today article):

"Shirov,A (2745) - Wang Hao (2696) [B97]
16th TCh-RUS Premier Dagomys RUS (2), 05.04.2009
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Qb6 8.Qd2 Qxb2 9.Rb1 Qa3 10.e5 dxe5 11.fxe5 Nfd7 12.Ne4 h6 13.Bh4 Qxa2 14.Rd1 Qd5 15.Qe3 Bc5

16.Nxe6! Bb4+ 17.c3 Qxe6 18.cxb4 0-0 19.Rd6 Qxe5 20.Bc4 Nc6 21.0-0 Qh5 22.Qf4 Nde5 23.Rxh6

1-0. Typical Shirov."

can you please enlighten me ? What is so wrong with 23...Qxh6 ?

24. Nf6+ Kh8 (not 24...gxf6 25. Qxh6 with Bxf6 to follow) 25. Bg5 Qg6 (any other move loses the queen) 26. Qh4+ and white mates.

I think

Jeez vipiu, you calculated the complexities of Game 3967407 but couldn't work out this one? You must be going senile in your old age!

24. Nf6+ Kh8
25. Bg5 Qxf6
26. Bxf6 gxf6
27. Qxf6 (or 27. Qh6+ Kg8 28. Rxf6) and White is clearly winning

or

24. Nf6+ Kh8
25. Bg5 Qxg5
26. Qxg5 and White is even more clearly winning.

I wonder if Black can throw in Ng6 at some stage though?