Correct answer: Qd31.Bg3?? (2.Q:e4#) but 1...Kd5! 1.Be5?? (2.Nc7#) but 1...Kd5! 1.Qf3?? (2.Nc7#) 1...Ng3 2.Qf7#/Qc6# but 1...Kd5! 1.B