Correct answer: Ne51...Rg8 2.Qh6# 1...Rh8 2.Q:h8# 1.Rh4?? (2.Qh7#) 1...Rh8 2.Q:h8# but 1...Nf6! 1.Nh4?? (2.Qh7#) 1...f5/Nf6 2.g:f6 e.p.#