Correct answer: Qb11...b:c4[a] 2.Nc3#[A] 1...Be4/[б]/ 2.R4:c5#[Б] 1...K:c4 2.R:c5# 1...N:c6 2.Bf7# 1...c:b4 2.N:b4#/Bf7#/Rd4# 1.Qe1? (2.R4:c5#[Б]) 1