Correct answer: Nc61...Qc4[a] 2.Qe4#[A] 1.Nf3? (2.Qe4#[A]) 1...Qc4[a] 2.Qe5# 1...N:c5/[б]/ 2.Nc7#[Б] but 1...Nf6! 1.Nf5? (2.Qe4#[A]) 1...N: