The relative standings at the top are almost identical to what they were coming into the 6th round of the Tbilisi Grand Prix. Evgeny Tomashevsky still leads by a point (now with 4.5 points) ahead of five other players. Coming into the round one member of the quintet was Alexander Grischuk, but he has been replaced by Teimour Radjabov, who defeated him speedily in a Najdorf Poisoned Pawn. The other four players are the same: Leinier Dominguez, Rustam Kasimdzhanov, Anish Giri and Dmitry Jakovenko.
Radjabov reintroduced the e5 line into top-level chess about a decade ago, when he crushed Viswanathan Anand with it in a blitz game. Since then there has been an explosion of theory on the variation, but it isn't clear that today's game will open a new chapter. Radjabov's 16.Be2 was a rare move, and in the two previous games to see this Black was doing okay. 16...Nxg3 was played in a comparatively low-level OTB game (the computer claims this is equal) and 16...Qa1+ occurred in a high-level correspondence game, albeit back in 2009. The computer likes the latter move, and Black won both games. If this line has a future, it will be with 16...Qa1+ but not Grischuk's 16...Nc5. White was clearly better after that move, and further errors by Grischuk on moves 18 and 20 sealed his speedy demise. Black resigned on move 24, faced with massive material losses or mate.
The day's other winner was Peter Svidler, who defeated Dmitry Andreikin with White in a 4.d3 Berlin. Svidler saddled his opponent with a weak queenside structure, and even though Andreikin was probably okay the position wasn't very comfortable to play. Eventually he dropped a pawn on the queenside, and got caught in a catch-22. His king needed to rush to the queenside to deal with the a-pawn, but when it turned into a rook ending it was one that would have been drawn if his king were on the kingside. Cut off on the d-file, it was lost and he soon resigned.
Round 7 is tomorrow, and Svidler will have Black against Tomashevsky then.