Correct answer: Ndb7+1.Ne8?? (2.Nc6#) but 1...Ke7! 1.Nf7+?? 1...K:c7 2.d8Q# but 1...Ke7! 1.Nb5?? (2.Nc6#) but 1...Ke7! 1.Nab7+?? 1...Ke