Topalov Regains Lead As Kamsky Blunders

The first big suprise of today's game was that Topalov played White despite the match schedule clearly stating (para 3.4.1) that Kamsky would be White again today.  Why the change? (UPDATE: This change was agreed before the match started, but was not reflected in the published regulations).

The second big surprise came when Kamsky played the French Defence for the first time in his career!  Avoiding Topalov's home preparation?

The third big suprise happened on Kamsky's 35th move when he blundered a pawn.  Sadly for Kamsky fans, there were no more surprises as Topalov finished off the game in clinical fashion.

Picture from the official site, by kind permission of the organisers.