Correct answer: Qb31...Bb2[a]/Bc1/[б]/ 2.Nd5#[A] 1...f2[c] 2.R:d3#[Б] 1...B:b4+ 2.K:b4# 1...a5 2.K:b5# 1...Ng7/Nd6/Nc7 2.Kd6#[C] 1.Qd6? (2.Qd4#)