Correct answer: Rd41...f4 2.Re4# 1.Nf7?? (2.Ng5#/Nd8#) 1...Nb7/Nc6 2.Qb3#/Qc4#/Ng5# but 1...K:f7! 1.Qc4+?? 1...Kd6 2.Nf7# but 1...N<