It was a great day for Shakhriyar Mamedyarov, as the only two players to lose were the only two players who could still pass him in the Grand Prix standings. Alexander Grischuk was a point out of first, but with a win over one of the leaders, Boris Gelfand, he would have helped his cause greatly. Had he won, he'd have been just half a point behind Hikaru Nakamura heading into the final four rounds. Instead, he's two points behind Gelfand and almost surely out of contention.
By contrast, Caruana was in very good shape, coming into the round tied with Gelfand for first. Unfortunately for his cause, he lost to Nakamura thanks to a blunder in the opening. When I first replayed the game, zipping through, it looked as if 15...Qxd4 was some sort of spectacular scholastic chess-style blunder. Obviously 15...Bxd4! But look for a few moments, and you'll realize that Black is just as dead after 16.Qh6, which threats like 17.Qh7+ Kf8 18.Rxd4 Qxd4 19.Qh8+ Qxh8 20.Rxh8+ Kg7 21.Rxd8, winding up with an extra piece. The real blunder came the move before, when he recaptured on g6 with the h-pawn. Capturing with the f-pawn was a must, when the position is complicated and both sides have their trumps.
So after seven rounds of this, the final Grand Prix event of the current cycle, Boris Gelfand leads with 5 points, half a point ahead of Nakamura and a point ahead of Caruana. By no means is all lost for Caruana, however, as he has the white pieces against Gelfand in the very next round. Meanwhile, I'd really love to know what is Gelfand's secret. The last six years he has been improving like a teenager or at least a young adult, and is in the running for player of the year this year. Of course Magnus Carlsen will get that award, and deservedly so if he defeats Anand, but if Gelfand holds on and wins this tournament is there anyone else whose year compares with his? But Gelfand fans shouldn't count their chickens yet, as he will also have Black against Nakamura in round 10.