Correct answer: Nb51...f5 2.Qe5# 1...Ng4/Nh1/Nh3/Ne4/Nd1 2.Be4# 1...Nc2/Nc6/Nbd3/Na2/Na6 2.Qc6# 1...b5 2.Qc5# 1.Qb7+?? 1...N