Correct answer: Qe81...f4 2.Qe4# 1...b5 2.Bb7# 1...R:d6 2.Q:d6# 1.R:c2+?? 1...Kd5 2.Q:f5# but 1...N:c2! 1.Qe8! (2.Ne7#) 1...Kd5/b5 2.Bb7#