Correct answer: Qg61...b3 2.c4# 1...f3 2.e4# 1...e4 2.Qb5# 1.Nc3+?? 1...Kc5 2.Qb5# but 1...b:c3! 1.Qf3+?? 1...Kc4 2.Qc6# but 1...e4! 1.Qe4+?? 1...Kc4
