White gets nothing appreciable from the opening and offers a queen trade. The ending seems rather harmless but a closer look at the game reveals many subtle points.
Enjoy the game.
Berkes,F (2685) - Kovacevic,A (2549)
Queen’s Indian 7.Bd2 Bf6[E17]
TCh-HUN 2012–13 Paks HUN (5), 02.12.2012
Critical Position 1
The queen's have just been traded off. Now is it safe for black to take the c3 pawn with 22...Bxc3?
Black to Play
22.Rxb5
Critical Positon 2
White is getting active. The rook is dangerously placed on d7 and Bc3 is attacked. What should black do with the bishop?
-25...Bb4(secures the c-pawn)
-25...Bf6(allows Nxf6 breaking up the kingside and leaves strong bishop vs offside knight)
-Something else
Black to Play
25.Rxd7
Critical Position 3
White has won a pawn and the technical phase is well underway. What should white do next?
-36.g4 then h4-h5 to fix the kingside pawns on dark squares
-36.h4 then h5 for the same reason
-36.Kf3 bringing in the king for action. The optimal kingside pawn arrangement can be determined later
-Something else
White to Play
35...Bc5
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