Correct answer: Nc51...Bd5 2.Ng4#/Ng8#/Nh5#/Nh7#/Ne8# 1.Ng5?? (2.Ne6#) 1...Kc5 2.Qe3# 1...Q:d7 2.N:d7# 1...Bd5 2.Nfe4# but 1...