Correct answer: f31...Kc3 2.Qe1# 1.Ng5?? (2.Ne4#) but 1...Kc3! 1.Nc5?? (2.Ne4#) but 1...Kc3! 1.f4?? zz 1...Kc3 2.Qe1# but 1...Ke3! 1.Qd
