Correct answer: Ndf61.Qf2?? zz 1...f:e4 2.Qf6# but 1...f4! 1.Qh4?? (2.Qh8#/Qf6#) 1...f:e4/f4 2.Qf6# but 1...K:d4! 1.Nef6+?? 1...K:d4 2.Qc3# but 1...<
