Correct answer: Nc51...K:f4 2.Qg5# 1.Be3?? (2.Qe8#) but 1...Q:e3! 1.Bd4+?? 1...K:f4 2.Qg5# but 1...Q:d4! 1.Bc5?? (2.Bd6#) 1...K:f4 2.Q