Correct answer: f41...B:f3 2.N:f3# 1.Rb5?? (2.Rd5#/Rc4#) 1...Ra5/N:c7 2.Rc4# 1...R:b4/d5 2.Rd5# 1...B:c2 2.Ne2# 1...Nb6 2.B:b6#