Correct answer: Be31...c4 2.Nb6# 1...N:b5/Nc4 2.Q:a1# 1...Q:a4 2.Nb4# 1.Bg5?? (2.Qg4#) 1...c4 2.Nb6# 1...Nc4 2.Q:a1# 1...Q:a4 2.Nb4#
