Correct answer: Qf41.Bc5?? zz 1...b:c5 2.Q:a5# but 1...Ka7! 1.Rb4?? zz 1...b5 2.Q:b5# but 1...Ka7! 1.Rb3?? zz 1...b5 2.Q:b5# but 1...Ka7! 1.Rb2?
