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Oll - Gelfand
Polanica Zdroj 1998
Black to move
Softening up the h1-a8 diagonal for the bishop.
1...d5? 2.e5 is less constructive.
2.Be3 Qd7 3.Nd4 Bf6 4.Nde2 Rae8 5.Rad1 g6 6.Bd4 e5
Even stronger was 6...Nxf4! 7.Qxf4 e5 8.Bxe5 dxe5 with a clear edge.
7.Be3 Bg7 8.fxe5 dxe5 9.Bh6 Rd8!
Attacking the d3-pawn, with a clear advantage after:
10.Bg5 Rc8 -/+
Petrosian - Smyslov
Moscow 1949
Black to move
Sacrificing a pawn to clear the a1-h8 diagonal for the bishop.
2.Nxd5
Preferable was 2.exd5 e4 3.Nxe4 Bxb2 4.Bf3 Bxa3 5.Rd3 although Black's bishop pair and outside passed pawn should tell in the end.
2...Bxd5 3.exd5 Rxc2 4.b3 e4!
The passed pawn manages to advance all the way to e3.
5.g4 e3 6.Rg2 Rd2! 7.Rxd2 exd2 8.Bd1 Rxd5
With a clear advantage.
Brynell - Ernst
Gothenburg 2004
ٌWhite to move