Correct answer: Bb21...Nd7 2.e:d7# 1...Ne4 2.Nf1# 1...N:e6 2.Q:a7# 1...N:b3 2.Q:b3# 1...Nb7 2.e:f7# 1...Na4 2.b:a4# 1...Na6 2.b4# 1.b4+?? 1...Nd3 2.