Correct answer: R:c51...Q:c4 2.Nf2#/N:c5# 1.K:b7?? zz 1...Q:c4 2.Nf2#/N:c5# but 1...a5! 1.Kb6?? zz 1...Q:c4 2.Nf2#/N:c5# but 1...a5! 1.B:
