Correct answer: N:b71.Nb3?? zz 1...K:b3 2.Bc2# 1...Kc4 2.Bd5# but 1...b:a6! 1.Bf3+?? 1...K:c3 2.Qc4#/Bg2#/Bh1#/Be2#/Bd1#/Bd5#/Bc6#
