Correct answer: Bc51...Qa5+/Qa1 2.N:a5# 1...Q:b7 2.B:b7# 1...Qc5+ 2.N:c5# 1.Nc5+?? 1...Qb7 2.B:b7# but 1...Q:a8! 1.Nd6+?? 1...Qb7 2.<
