Correct answer: Nc71...d2 2.Qb3# 1...Nf3/Ng4/Nd7/Nc4+/Nc6 2.Rc4# 1...Bb2 2.Q:b2# 1.Nc7! (2.Nd5#) 1...a:b4 2.Nb5# 1...Nf3/Ng4/