But barely. Wesley So entered the last round with a half-point lead over Wei Yi and more against everyone else, and with White against Wei Yi decided to play it safe. Black went for a well-known line of the Queen's Gambit Declined called the Peruvian Variation (I think) that results in Black's having a structure that appears as ugly as sin but which turns out to be very difficult to beat. In the game Wei Yi had no trouble keeping the draw, which meant that he remained half a point behind So, who guaranteed himself of a clear lead heading into the last round.
Unfortunately for So - and for Wei Yi too, for that matter - both Magnus Carlsen and Levon Aronian won and also came to within half a point of So. Carlsen was in serious trouble against Pavel Eljanov, who played a great game for 28 moves. Eljanov has played a very good tournament so far, but he has failed to convert several better-to-winning positions, and this one he even managed to lose. His 29th move was a serious error, giving away the advantage, and his 37th to 39th moves left him lost. Carlsen played the ensuing rook endgame just about perfectly to stay within striking range of the leader.
As for Aronian, his opponent, Loek van Wely, like Eljanov managed to play very well the first half of the game but not the second. Van Wely's queen moves from 22...Qd8 through 27...Qxe4 left him with a lost position, and Aronian did a fine job of navigating the complications to near perfection.
The remaining games were drawn, several of them quietly, and in any case none of them left the protagonists with a shot at first place. So after the customary link to the day's wins, with my notes, here are the pairings for the final round:
- Andreikin (5) - Aronian (7.5)
- Wei Yi (7.5) - Wojtaszek (5)
- Nepomniachtchi (5) - So (8)
- Carlsen (7.5) - Karjakin (6.5) - !
- Giri (6) - Eljanov (6.5)
- Rapport (4.5) - Adhiban (6.5)
- Van Wely (2.5) - Harikrishna (6)
I don't know what the tiebreak situations will be in case two or more players wind up sharing first, so if some enterprising reader (we all know who that is) wants to inform us, he's welcome to do so. Hopefully for the sake of my patriotic prognostication So will make it simple by winning in the last round.
As for the Challengers Group, the chances of the U.S. national anthem (probably metaphorically) playing took a bit hit as Jeffery Xiong went from clear first to a tie for third after losing to Tari while all his closest rivals - Markus Ragger, Gawain Jones, and Ilia Smirin all won. Ragger and Jones are tied for first, while Smirin and Xiong are tied for third-fourth half a point behind. But the good news for Xiong is that he's the only one of the four with White in the last round, and his opponent has the lowest score of the leaders' four opponents. Here are the critical pairings:
- L'Ami (6.5) - Ragger (8.5)
- Lu Shanglei (7.5) - Jones (8.5)
- Hansen (7) - Smirin (8)
- Xiong (8) - Bok (5)