1.Bxg7!Qxc3+
If 1... Kxg7 2.Qh6+ etc. If 1... bxc6+ 2.Kb1!
2.Kb1!Qxd2
3.Bxf6
Now mate on h8 can only be prevented by large scale loss of material
3...Qxd1+
4.Rxd1Kf8
5.Rh1Bh3
6.Rxh3Ke8
7.Rh8+Kd7
8.Rh7Rf8
9.Bg71-0
Gaprindashvili-Vujanovic (1975)