Correct answer: Qa81...Nc2 2.K:c2# 1...Ndc6 2.Rb5# 1...Nb3 2.K:b3# 1.Qa5+?? 1...c5 2.Q:c5#/Qc7# but 1...Nb5! 1.Qa7?? (2.Q:c7#/Qc5#/Q