All three games from round 1 of this year's Sinquefield Cup were interesting, but only one had a winner. Veselin Topalov played very aggressively, as is his wont, and in this case it was more self-destructive than anything else. Fabiano Caruana played very well and took advantage of Topalov's concessions to start the event with a win, and with the black pieces at that.
The world champion (at least for now; will he be a lame duck in four days?) had Black against Maxime Vachier-Lagrave in a very exciting game. Magnus Carlsen used an idea against Vachier-Lagrave's Scotch that seems to have come from Garry Kasparov's notebook, and it looks like it's good enough for a very exciting equality. It seems to me that both players only made one inaccuracy apiece in the game, and although Carlsen could have shown an advantage at one moment the talk I've read that he may have missed a win is mistaken. He should have played 25...Qd3, that's true, but instead of playing as in the game 26.Qc3 would have kept the disadvantage to manageable proportions. I'd add that for Carlsen to have worked out all the fine tactical details between 25...Qd3 and 25...Qd2 in fairly significant time trouble is asking a bit much of him (you'll see when you replay the game and my analysis).
Finally, Levon Aronian had a small advantage at times against Hikaru Nakamura's Classical Slav, but couldn't manage to turn it into something significant.
The games, with my notes (heavy-ish notes to the MVL-Carlsen game), are here.
Round 2 Pairings: Nakamura - Carlsen, Caruana - Vachier-Lagrave, Aronian - Topalov