Correct answer: f31...e:d4 2.c4# 1...e:f4 2.Qe6# 1.f3! zz 1...c:b4 2.Qb5# 1...c:d4 2.Qa2# 1...c4 2.Qe4# 1...e:d4 2.c4# 1...e:f4 2.Qe6# 1...e4 2.f:e4#