Correct answer: Nc71.Kf4?? (2.Qe4#) 1...c4 2.Ba7# but 1...Kc4! 1.Nf4?? (2.Qd3#) 1...c4 2.Ne6# but 1...Kc4! 1.Qf5?? zz 1...c4 2.Ba7# but 1...Kc