Correct answer: Qf31...Bd3 2.Qc6# 1...Nd3 2.Qe6# 1.Qf5?? (2.Qb5#) 1...d3 2.Qc5#/Qe4# but 1...Nd5! 1.Qb7?? (2.Qb5#) 1...d3 2.Qe4# but 1...