Correct answer: Bg51.Kg7?? (2.Rd8#) but 1...K:d7! 1.K:g6?? (2.Rd8#) but 1...K:d7! 1.Kg8?? (2.Rd8#) but 1...K:d7! 1.Bb5?? (2.Rf8#) but 1...K:f7!