Correct answer: O-O1...Nc6/N:d7/Na6 2.Qg8# 1...e:d3/e5 2.Nf1# 1.Q:b8?? (2.Qg8#) but 1...B:b8! 1.B:e6?? (2.Nf1#) but 1...f:e6! 1.Bc6?? zz 1...N