Correct answer: Ne21...Kd4 2.Qd3# 1...Nd4 2.c4# 1.c:b3?? (2.Qc4#) but 1...Kd4! 1.c3?? (2.Qc6#) 1...Nd4 2.c4# but 1...Nc5! 1.Qb5+?? 1...Kd4 2.Q
