1.Rxf7!	Kxf7
2.Bc4+	Kf8
3.Rf1+	Bf6
4.Rxf6+	gxf6
5.Qg8+	Ke7
6.Qe6+	Kf8
7.Qxf6+
And Black resigned
Hartston-Penrose (1963)