Correct answer: Nd21.Ng3?? (2.Nf1#) 1...Ng4 2.Rh1# but 1...Ne4! 1.Ng5?? (2.Nf3#) 1...Ng4 2.Rh1# but 1...Nd1! 1.Rcg1?? (2.R7g2#) but 1...N