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This nice blow seals Black's fate.
6...Bc8
Obviously both the queen and bishop were immune.
7.Rh3 h6 8.Rxh6+ gxh6 9.Qxh6+ Kh7 10.Qxf8+
Black resigned.
Portisch - Fischer
Sousse Interzonal 1967
Black to move
Preparing ...Ng7-e6-d4 in order to seize the centre.
2.Qe3 Qa7 3.h4!
Intending Kh2 and Bh3 to swap the opponent's "good" bishop.
3...Kg7 4.Kh2 f6 5.Bh3 Bxh3 6.Kxh3 Ne6 7.h5 gxh5!
Accepting the sacrifice in order to gain time.
8.Rh1 Rad8 9.Kg2 Qg7 10.Kf1 Qg4! 11.Rh4
11.Nh4? Rd1+ 12.Kg2 Nf4+ -+
11...Qg6
With ideas like ...Bh6-g5 and ...Nd4, Black is better.
Piskov - Hermesmann
Dortmund 1992
White to move
Forcing a favourable exchange on g3, which will clear the f-file for the rook and hamper Black's potential attack.
1...Nxg3 2.fxg3! e4 3.Be2 Ne5 4.Nb5!