1...Rg5+
2.Rg2Qc5+
3.Qf2
If 3.Kh1 Rh5+ 4.Rh2 R8e5 and White must lose
3...Re2!
All Black's pieces are en prise, but none can be taken, eg. if 4.Qxc5 R5xg2+ 5.Kh1 Rh2+ 6.Kg1 Reg2#
4.Rxg5Qxg5+
0-1
Bannik-Cherepkov (1961)