Correct answer: Qd21...Kf6 2.Rd6# 1...Re4/Re3/Re2/Re1 2.N:c5# 1...Rf5 2.g:f5# 1...b:a6 2.Q:a6# 1.N:c5+?? 1...Kf6 2.Rd6# but 1...R:c5! 1.