Correct answer: Nd31...d4 2.R:d4# 1...Bb7 2.N:b7# 1.Rc4?? zz 1...Bb7 2.N:b7# 1...d4 2.R:d4# 1...b:a5/b5 2.Q:c5# but 1...d:c4! 1.Nd3! zz 1...d4 2.R