Correct answer: Bc51...Nb6/Na7 2.Q:b6# 1...Bd2 2.Q:d2# 1...Bc3 2.Q:c3# 1...Bb4 2.B:b4# 1.Bb2?? zz 1...a3 2.Q:a3# 1...Nb6/Na7 2.Q:b6
