Correct answer: Qb11...Nf3 2.Qb7#/Qe4# 1...Nc6/Bb7+ 2.Qb7# 1.Qc7?? (2.Qb8#) 1...Bb7+/Nc6 2.Q:b7# but 1...Nd7! 1.Qb1! (2.Qb8#) 1.
