1.Dd7+ Rc4 (1...Rc5 2.Dc7+ etc) 2.Dc7+! Rd5 (2...Rd4 3.De5+ Rc4 4.b3+, ou 2...Rb4 3.Dc3+ Ra4 4.b3+) 3.b4! Dd4 4.c4!! (4...bc 5.Dd7 mat) 1-0