Correct answer: Rc41.Nd3?? (2.Nf4#) but 1...Kd5! 1.Na6?? (2.Nc7#) but 1...Kd5! 1.Rg4?? (2.Rg6#) 1...Ng3+ 2.R:g3# 1...Ng7 2.Rg:g7# 1...