Correct answer: Qb71...Qb1/Qa2/Qc3 2.Rc3# 1...Q:d2+ 2.N:d2# 1...Q:d4 2.R:d4# 1.Qb7! (2.Qb5#) 1...Q:d2+ 2.N:d2# 1...Qc3 2.R:c3#