Correct answer: Nc31...Bg5/Bg7/Bf8 2.B:g5# 1.R:d4?? (2.Qf2#) but 1...c:d4! 1.B:d4+?? 1...Kf4 2.Qg4# but 1...c:d4! 1.Nc3! zz 1...Kf4 2.Qf2