Black resigned due to what? Nice game indeed! I like how Mikhail Tal attacks. :)
Mikhail Tal vs Vasily Smyslov (1959)
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The simple threat here is 27.Bxb6 where the a-pawn is pinned. But what if Black plays 26...Bxd4+ 27.Nxd4+ Ke5? What would be the problem here?
After your line 26...Bxd4+ 27.Nxd4+ Ke5 white still picks up a full piece with 28. Ra5+ 
However black could play 26...Nc5 instead. Aside from further calculation, the problem then is that white still is up too much material
I'll explain this and much more in the Youtube video here. Have a look you might enjoy it 
Hi all,
Just uploaded a short analysis of the mentioned game to Youtube.
Here is the game and some of the lines (without annotation though). In the Youtubevideo I give you the chance to find the winning move. Don't go through the game here if you want to try and find it.
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