Correct answer: Bd11.Bb5?? (2.Bc4#) but 1...Kb3! 1.Bc6?? (2.Bd5#) but 1...Kb3! 1.Bd7?? (2.Be6#) but 1...Kb3! 1.Be8?? (2.Bf7#) but 1...Kb3!