Correct answer: Qb71...Rc7 2.Q:d5# 1...Bc7 2.Qc8# 1...Nf4 2.Rg5# 1...N:f6 2.Ng7# 1...Ndc7 2.Qf3# 1.Qc6?? (2.Ng7#/Qe6#/Qd7#) 1...N