Correct answer: Q:f3+1...f2 2.Qe4# 1.Kc1?? zz 1...f2 2.Qe4# but 1...Ke2! 1.Bg2?? (2.Bf1#) but 1...f:g2! 1.Qb4?? zz 1...f2 2.Qe4#/Qc3# but 1...Ke3!