As usual, Francisco Vallejo Pons was involved in a decisive game, and most of the way he was following the script. He lost his first two games and was well on the way to losing a third game, but a funny thing happened on the way to the finish. Magnus Carlsen had plenty of time - at least for a while - to find a win, but didn't manage. Vallejo had just about equalized when Carlsen uncorked an amazing blunder - a two-mover - and soon had to resign. Thanks to the 3-1-0 scoring system the win leapfrogged Vallejo out of the cellar, where Carlsen now resides! (Not for long, I expect.)
More remarkable still, Carlsen has company there: the world champion. In this case, however, it was a more normal loss, albeit with White. Vassily Ivanchuk played the Schliemann (aka Jaenisch) against Anand's Ruy Lopez, and equalized without any obvious difficult against Anand's non-topical variation. Ivanchuk was doing well, and when Anand sacrificed (blundered?) a pawn for play the Ukranian was able to cool off his opponent's initiative and squeeze out the point in 69 moves. Ivanchuk is the clear leader with 2.5/3 (or rather, 7/9), and on the live rating list he's up to #5 in the world. (Incidentally, Aronian is within .3 of Anand for second, and isn't that far from Carlsen, either.)
Finally, Hikaru Nakamura played a Kamsky opening Kamskyishly and achieved a pretty comfortable draw with Black against Aronian.
Standings After Round 3 (3-1-0 scoring first, normal scoring in parentheses):
1. Ivanchuk 7 (2.5)
2. Aronian 5 (2)
3-4. Nakamura, Vallejo 3 (Nakamura 1.5, Vallejo 1)
5-6. Anand, Carlsen 2 (1)
Round 4 Pairings (for Friday; Thursday's a rest day)
- Aronian - Ivanchuk
- Vallejo - Anand
- Carlsen - Nakamura
Official site here; games (with some comments) here.