Correct answer: Qf51...Rc7 2.Nc4# 1...R:c8+ 2.N:c8# 1...R:b6+ 2.R:b6# 1...Nh7/Nd7+ 2.Qd7# 1...Bh7/Bf5/Be4/Bd3/Bc2/Bb1/Bf7 2.N