Correct answer: Qb31...c4 2.Qe3# 1...f4 2.Qd3# 1.Bf7?? (2.Qe3#) but 1...f4! 1.Bd2?? (2.Qd5#) 1...e4 2.Qc3# but 1...Kc4! 1.Bf6?? zz 1...c4 2.B:e5#
