The second round of the Sao Paulo Chess Masters Grand Slam witnessed Italian GM Fabiano Caruana take on Russian GM Sergey Karjakin in a ruthless game. Caruana – with Black – found the White pieces uncoordinated and went for a double exchange sacrifice to win. Caruana now leads with a perfect score after two rounds. (Report on Chess Blog.) Black is winning as White has just played 26.g4. A simple, safe continuation like 26. …Qc8 or even 26. …Ne5 wins for Black. But, can you figure out the attacking line that Caruana went for?

Karjakin,Sergey (2778) – Caruana,F (2773)

Result: 0-1
Site: Bilbao ESP
Date: 2012.09.25
[…] 1.e4 e5 2.¤f3 ¤c6 3.¥b5 a6 4.¥a4 ¤f6 5.O-O b5 6.¥b3 ¥c5 7.c3 d6 8.d4 ¥b6 9.¥e3 O-O 10.¤bd2 ¥b7 11.¦e1 exd4 12.cxd4 ¤b4 13.£e2 c5 14.a3 ¤c6 15.d5 ¤e7 16.h3 ¦e8 17.¥c2 ¤g6 18.b3 ¥a5 19.¦ab1 ¥c3 20.¦ec1 b4 21.a4 a5 22.¥d3 h6 23.£d1 ¥a6 24.¥c2 ¦a7 25.¢h2 ¦ae7 26.g4 ¤xe4 27.¤xe4 ¦xe4 28.¥xe4 ¦xe4 29.£c2 £e7 30.¦g1 ¦xe3 31.fxe3 £xe3 32.¦bf1 ¥e2 33.£f5 ¥d3 34.£d7 ¥e5+ 35.¢h1 ¥e4 36.£e8+ ¤f8
White resigns. Black is two pawns down and has a mating net coming up apart from pieces that are bound down to the defense of the White King. The White Knight on f3 is pinned and White is set to lose a Rook as well in trying to stay piece balanced.