Correct answer: O-O1...K:g4 2.h3# 1...Ne3/Nf2/Nc3/Nb2 2.Nf2# 1.Bh5?? zz 1...Ne3/Nf2/Nc3/Nb2 2.Nf2# but 1...g6! 1.B:c7?? zz 1...K