Correct answer: Rcc51...f3 2.Ng3# 1...e5 2.B:g4# 1.e8N?? (2.Nf6#) 1...f3 2.Ng3# 1...e5 2.B:g4# but 1...Bb2! 1.Rc3?? (2.Rh3#) 1...f3 2.Ng3# 1...e5