Correct answer: Nd21...Rb5 2.Qd6# 1...Rb4 2.Bd4# 1.e6?? zz 1...Rb5 2.Qd6# 1...Rb4 2.Bd4# but 1...Rb6! 1.Ng1?? (2.Rd5#/Qc6#) 1...Rb
