Game of the Month : Karjakin-Kramnik Nov 2010 . Attack!

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Comments on variations to the game itself featuring a piece sac 15.Be2!

12..Nc4 13 Ne6 !? instead of 13 Qd3 played in Gashimov-Gelfand 2010. Kramnik goes for the novelty 12..Bf5

15..hg5 16 hg5 Qd7 17 g4 Bg6 18 Rdg1 followed by 18 f4 is strong for White therefore Black declined the sacrifice

17..Nc4 would has been followed by 18 Bc4 dc4 19 Qf2!? Qa5 20 f5! with attack on column h

21 Qc4!? Qd5! 22 Bd3 Qc4 23 Bc4 Be7 24 g5!?

22 ..Bh4! 23 Bd3 Bf6! is much better than the game. 22..b5!? 23 Qc6 Re2 was better than the game

23..Qd5 24 Qc3 Qb5 25 gh6 with advantage. 23..b5!?

Winning Attack Against The King

White to play !

The experienced GM with Black could not save the day. How did White convert his advantage convincingly here ?

November Tactical Position

Black to play and win

What is the best move here for black ?

Key moment : November 2010 GM edition

White to Play

What are the candidate moves and what is your assessment of the position ?