Correct answer: Qa31...N:c4/Nd1/Nd3/Na4 2.Nba4# 1.Kh3?? zz 1...N:c4/Nd1/Nd3/Na4 2.Nba4# but 1...g4+! 1.Kh5?? zz 1...N:c4/Nd1/N<