Correct answer: Ba31...K:b4 2.Qa3# 1...c3 2.Q:c3# 1.N:e6+?? 1...K:b4 2.Qa3# but 1...f:e6! 1.Qe3+?? 1...K:b4 2.Qa3# but 1...Nd4! 1.Qa3?? (2.