sorokahdeen: Cool game of combination and counter-combination.
By moving the knight to h5, allowing nxe5, black was hoping to use his pin on the knight and the pressure on the pawn at c3 to recover the piece, free his game and use the intense pressure of the centralized bishop along the h8-a1 diagonal to gain an initiative as it prevents white's deployment of the knight on f1 to e3 or g3 with the threat of nf4. It was a great idea but one which the game shows has an immediate tactical refutation.
Black seems not to have seen any part of the power of nf7 and his resultant, ad hoc defense wasn't up to the task of fending off mate with all his extra material either on the extreme flank (n on a5) accomplishing nothing immediate (b on e1) or on the back rank (both rooks).
With attacks like this, it's fascinating to see how great attacking players like Tal, Topalov and velimirovic, see and use hidden themes in the position (e5... e6...) and other follow-on moves that keep the tempo of the attack going with quiet moves that contain devastating threats in the knowledge that boring through the defense makes the material factor unimportant when the additional piece(s) cannot contribute to staving off mate.
sac: 19.Qxh5
h5, the point of which I don't see. How about 15.....cxd4? It wouldn't remove a piece from the kingside, and would prevent the tempo-gaining manoeuvre 16. d5! 
d7. Any thoughts?
