Correct answer: Qf61...N:e2/Nf5/Nb5 2.Nc5# 1...Ne6/Nb3 2.Nd6# 1...Nf3/Nc6 2.Nc5#/Nd6# 1.R:b4?? (2.Nc5#/Nd6#/Qe8#) 1...N:b4 2