Correct answer: N:f41...g3 2.Q:f4# 1.N:e3? (2.Qf2#) 1...R:e1[a] 2.Re7#[Б] 1...R:h4/[б]/ 2.Rb3#[C] 1...f:e3 2.Qg3#/Qf6#/Rf7#[A] but 1...g3! 1.Nf6??
