Correct answer: Qe21...N:d7+ 2.Q:d7# 1.d8Q?? (2.Rf6#/Qf6#) 1...Nd7+ 2.Qb:d7#/Qd:d7# but 1...K:f5! 1.d8B?? (2.Rf6#) 1...Nd7+ 2.Q:d7# but
