Correct answer: Qc41...N:d2 2.Bd4# 1...Na1/Na5 2.Qa7#/Qb6# 1...Bc2 2.N:c2# 1...Nd3/Na2 2.Q:d3# 1.Qa7+?? 1...Nd4 2.Q:d4# but 1...N