By Steve Giddins

In the day's big clash, Shirov and Kramnik rattled out a long line of Petroff theory, which had clearly been subjected to a serious amount of frybkation (computer analysis) by both players. Like most long forcing lines in the Petroff, it led to a level ending, and although Shirov subsequently outplayed his opponent to the extent of putting him under serious pressure, Kramnik's defences held.

This allowed Carlsen to join Kramnik in a share of the lead, after beating Dominguez in typical fashion. Black fell behind on the clock early on, and eventually cracked under the pressure.

Ivanchuk had much the better of Kariakin for most of the afternoon, but his advantage disappeared after the excessively rapacious capture on a5.

There were short draws in the games Smeets-Anand and Nakamura-Leko, and a Short draw in Nigel-Caruana.

B Group leader Anish Giri had a monumental slice of luck, when closest rival Wesley So blundered into a mate in two, in a game he had been completely winning.

From chessbase.com