Correct answer: N:d31...R:d5 2.Nd2# 1...R:e4 2.B:d3# 1.Bg7?? zz 1...R:d5 2.Nd2# 1...R:e4 2.B:d3# but 1...c:d5! 1.Bf6?? zz 1...R:d5 2.Nd2#