1...Nc5+ 2.Kd2 Rb2+ 3.Kc1 [3.Kd1? Be3 4.Rh7+ Kg6 5.Rg7+ Kh6–+] 3...Rc2+ 4.Kb1 Ne4 5.Rh7+ [5.c8Q? Nd2+–+] 5...Kg6 6.Rg7+! [6.Rd7? Bd4!–+ Nowotny] 6...Kh5 7.Rh7+ Kg6 8.Rg7+ Kh6 9.Rd7 Bd4!
10.Bf4+ Kh5 [10...Kg6 11.Rd6+ Kf7 12.Rd7+ Ke6 13.Rd6+ Nxd6 14.Bxd6 Kd7 15.cxd4=] 11.Rh7+ Kg6 12.Rh6+! [12.Rh3? Be3! Nowotny 13.Rg3+ Kf7!–+] 12...Kf7 13.Rh7+ Kg6 14.Rh6+ Kg7 15.Rh3 Be3!
16.Be5+ Kf7 17.Rh7+ Kg6 18.Rg7+ Kh5 19.Rh7+ Kg6 20.Rg7+ Kh6 21.Rd7 Bd4! 22.Bf4+ positional draw - perpetual Nowotny
Watch this study on a dynamic board! Click here!