Correct answer: Bd11...K:a3 2.Qa5# 1.Kf1?? zz 1...K:a3 2.Qa5# but 1...e2+! 1.Kd1?? zz 1...K:a3 2.Qa5# but 1...e2+! 1.Kd3?? zz 1...K:a3 2.Qa
