Correct answer: Qe11...Bf4 2.g:f4# 1...Bd4 2.c:d4# 1.Nhg5? (2.Nf7#[A]) but 1...B:g5[a]! 1.Nhf2? (2.Ng4#[Б]/Nd3#[C]) but 1...B:f2/[б]/! 1.Nf4? (2.Nd3#[C]