optimal play: Thanks RainingBen,
I like to see how the Australians go at the Olympiad and check out their games.
I'm especially impressed with the youngest team member, Anton Smirnov, who thus far has a score of 4½/5 [+4/=1/-0]
<I have a question about your analysis. After 37...Kf8, can't white just play 38.Qh8#? Did I miss something?>
No, White can't just play 38.Qh8#. I'm afraid you missed that it's not a legal move from where the Queen is sitting on g5. Nor would it actually be mate anyway.
<I'd be interested in further analysis of the 29.Rxb4 axb4? 30.Qe5+ line you describe.>
29.Rxb4 axb4? 30.Qe5+ Kg8 31.Nd5 followed by 32.Nf6+ and Black's pretty much had it!
To avoid that disaster, Black could ignore capturing the Rook and instead play 29...Qxd6 but that still gives up the Bishop and leaves White with a strong continuation such as 30.Rd4 Qc5 31.Qf2 Be8 32.Rxd8 Qxf2+ 33.Kxf2 Rxd8 34.Rc1
Even allowing for that mistake, I agree this is still a good game by him since he had the wherewithal to snap up that second chance. I don't think it's too early to pick Smirnov as a top flight GM in the future, as long as he sticks at it, he's well on his way.