Alas, there wasn't much drama in the final round of the 2012 London Chess Classic, at least in respect to the race for first. Vladimir Kramnik needed to defeat Michael Adams with the black pieces to have a chance of catching Magnus Carlsen and forcing an Armageddon playoff, but there wasn't much he could do. Adams played the ultra-solid 5.Re1 variation against Kramnik's Berlin, and although 14...c6! gave Black some slight hopes for an edge Adams threw water on all the sticks before they could make a fire. After 25.a5 it was clear that there was little to be done, and once the rooks came off a few moves later there was nothing left but to engineer a repetition to placate the arbiters for the Sofia rules.
That draw guaranteed that Carlsen would take clear first (at least on the 3-1-0 system; a loss would offer Kramnik the consolation of tying on traditional scoring), Kramnik clear second and Adams at least shared third. Carlsen obtained some winning chances against Viswanathan Anand when the latter played 22...Rd7, inadvertently cutting off the knight's natural retreat. His position was completely fine before that, and while it was probably objectively fine afterwards as well his knight was rather uncomfortable after 23.b4 Nd3 24.Reb1. Anand decided to sac a pawn to extract it, and the resulting position after 30 moves looked like something out of a 4.f3 Nimzo-Indian. Black remained a pawn down, but with active pieces, good blockading knights, and two White weaknesses to eye on a3 and c3.
There was a critical position after Carlsen's 46.Kd1 where Anand thought for around 45 minutes before making his move. Black has many choices there - many tempting choices, at that - but Anand felt that his pieces were all where they should be, and so it was appropriate to temporize with 46...Kd8. The engine disapproves, preferring several other moves including 46...Rxf3 and 46...Ra1+. The problem with Anand's move - again, in the engine's view, though the point is entirely logical - is 47.Kc1, aiming to push the rook off the a-file with Kb2 and then play for mate with Ra4. Black's best bet is 47...Ne6 48.Kb2 Rxf3 49.Ra4 Nc7, but after 50.Raa7 White threatens to win Black's knight - e.g. 50...Rxg3 51.Rb8+ Ke7 52.Nd5+ Kd6 53.Rd8+ Kc5 54.Nxc7 with a likely win. 50...Rd3 stops that idea, as Black would have 54...Rxd8 at the end of the previous variation, but that loses to 51.Rb8+ Ke7 52.Nd5+ Kd6 53.Nb4. Fortunately for Anand, Carlsen didn't spot this idea, and after that Black's activity sufficed for a draw.
There was one decisive game, and that was Nakamura's win against Luke McShane. Nakamura was always somewhat better, but it wasn't a winning advantage (or generally even close to one) until the last move of the game. Instead of the obvious, natural and correct 32...Bc6 (with equality) McShane played the gross blunder 32...Kg7??, and had to resign after 33.Qxe5, when he's down a piece for nothing. That's what exhaustion and time trouble will do to you! As for Nakamura, the win elevated him into a tie for third with Adams.
Last in the recap but first to finish was Judit Polgar's game with Levon Aronian. Polgar decided to check Aronian's homework in a Marshall Gambit, and the result was an easy draw for Black, possibly all worked out beforehand. The players followed the game Shirov-Tomashevsky, Saratov 2011 through Black's 22nd move, and then instead of Shirov's 23.Rg4+ Kh8 24.a4 Polgar played 23.a4 immediately. In fact the position is completely drawn either way, so I don't think that 23.a4 was any sort of special preparation; nor do I believe that she simply wanted to put an end to the tournament. My suspicion is rather that she was surprised by 14...Qf6, as Aronian had played 14...Qh4 seven(!) times back in 2008 (including once against her) and twice more back in 2005.
Gawain Jones had the final bye. (The bye-bye bye.)
By way of a broader picture: Carlsen won this tournament for the third time in its four years, with only Kramnik interrupting his reign last year with a similar +4 score. As all chess players not living in a cave know by now, Carlsen has broken Garry Kasparov's all-time rating record of 2851, setting a new mark of 2861.4, which will be rounded down to 2861 come January, when it's official. Kramnik had a fantastic tournament as well, and played the cleanest chess of anyone in the tournament. His rating will go up to 2810 when the next official list comes out, breaking his previous all-time record by a point. It also puts him in second place on the list, ahead of Aronian, who had an awful tournament by his exalted standards. Kramnik reported feeling very happy about his form, and felt that if he could maintain his current level while fixing some little things in time for the Candidates in March, he'd have very good chances there.
Adams had a very good tournament as well, and it could have been even better. He got a half-point gift against Anand (reverting to traditional scoring), but could easily have scored another point or even point and a half against Carlsen and McShane. In any event, he showed signs of regaining the form that made him a top five player in the late '90s through the first half of the '00s. For Nakamura too it was a success as he played well, picked up nine rating points and got back into the top 10.
Neither Anand (one win, one loss, and some shaky draws) nor Aronian (one win, two losses) will feel good about this tournament, though for Aronian the psychological situation is better. For Anand it was yet one more poor result, while for Aronian it was a lousy start with two losses, after which he stabilized.
Polgar (+1 -4) looked rusty, as she often does these days, while Jones (-5) just had to take to his lumps in his first super-tournament. McShane's result (+1 -5) was surprisingly bad, however, as although he was an underdog by rating he had played very well in previous editions of the Classic.
Final Results (on 3-1-0 scoring; the "real" score follows)
1. Carlsen 18/24 (6.5/8 [five wins, three draws])
2. Kramnik 16 (6 [four wins, four draws])
3-4. Adams, Nakamura 13 (5 [both won three, lost 1 and drew 4])
5. Anand 9 (4)
6. Aronian 8 (3.5)
7. Polgar 6 (2.5)
8. McShane 5 (2)
9. Jones 3 (1.5)