Kramnik gets rid of his powerful bishop and forces Black to decide how to capture. This exchange is very typical in this system.

16...Bxc6 17.d5 Bb7 18.e4 White gets a strong and mobile pawn center and the b7-bishop is completely buried.

The b7-bishop is momentarily dead and to activate it Black would have to weaken his king even further.

Black finally frees the bishop but now his king will be in a pretty shaky situation.

The b6-pawn is targeted.

White's position is no doubt preferable, but there is only one move that wins the game for Kramnik at this moment. Can you see it?

The knight was well placed on c5, supporting the a4-push on the queenside. However, Black was planning ...Ke7, unpinning the knight and offering a rook trade next. With this knight maneuver, Kramnik looks for the e5-square and another weakness like g6 besides threatening Nb4. The knight invasion on e5 is devastating.

37...Ke7 38.Ne5 , Black loses material!

Black cannot move the knight since after the rook trade, the bishop on f7 is hanging.

White is winning.