Correct answer: Nf61.Q:g6?? (2.Qg5#) but 1...Rb5! 1.Ng5?? (2.Qe4#/Nh3#) 1...R:d4/Re2 2.Nh3# but 1...R:f2! 1.Nd2?? (2.Qe4#) but 1...R:d4!