Correct answer: Rb51...Rd7/Rdd8 2.d6# 1...Ne7 2.Q:d6# 1.Qb2+?? 1...Nd4 2.B:d4#/Q:d4# but 1...R:b2! 1.Rb5! (2.Bd4#) 1...f:e3 2.Q:e3# 1...f
