Correct answer: Nf71...Rg2+ 2.Q:g2# 1...Rg1/Rg4/Rg5/Rg6/Rg7/R:g8 2.Q:d3# 1...Ng7/Nf6 2.Nf6# 1...N:f4 2.Q:f4# 1...Nc3+/Nd2/N
