Correct answer: Rd31...B:b4/R:b4 2.Rd5# 1...Nb1/Nc4 2.Rbc4# 1.Ra4?? (2.Rd5#) but 1...Bd2+! 1.Rd2?? zz 1...B:b4/R:b4 2.Rd5# 1...N
