Correct answer: Bh71...f6 2.Ng6#/Qf4# 1...Nf6 2.Qf4# 1...Ng7 2.Q:d6# 1...Nc7 2.Q:d6#/Nd7# 1...Qb6/Qb5/Qb4/Qb3/Qb2/Qb1/Qb8/Q