Correct answer: Nc41...d4 2.Bc6# 1...f4 2.Bg6# 1.Kg3? (2.Rfe3#[A]) 1...d4 2.Bc6# but 1...f4+! 1.Ng4? (2.Rde3#[Б]) 1...d4 2.Bc6# 1...f4 2.Bg6# but 1...e5!