Correct answer: Nh41.Ng4+?? 1...Kd5 2.Rd4#/Nf:e3#/Ne7# but 1...K:f4! 1.Rf3?? (2.Bc3#) but 1...K:f6! 1.Rf1?? (2.Bc3#) but 1...K:f6! 1.N