Correct answer: N:f51.N:d5?? (2.N:f6#) 1...K:d5 2.Qc6# 1...e:d5 2.Qe2# 1...d3 2.Qc4# but 1...Be7! 1.Nc2?? (2.Qe2#) 1...d3 2.Q:e6# but 1...Bd2!