Correct answer: Ng51...Nc3/N:a3/Na7 2.Qe7# 1...Nd4 2.Qe7#/Bf8# 1.Nd8?? (2.Q:c6#) 1...Kd6 2.Bf8# 1...Nd4 2.Bf8#/Qe7# 1...N:a
