This game (Tarrasch vs. Alekhine Bad Pistyan, 1992) made an enormous impression on me about how powerful and dynamic a pawn centre can become. It is ironic in the fact that Tarrasch, a great theorist of the classical school, is defeated by his own teachings about the pawn centre. 

This game is really great to watch because of its instruction in the centre attack. The notes are from Vukovic's book.

Thanks for sharing this. I do assume you mean 1922 -- or else these are ghosts gathered around the board

21. d4 is just the kind of move I NEVER think of when looking at positions. Even though I am regularly victim to the "when in doubt, push a pawn" syndrome.