Correct answer: f41...Nd5 2.c:d5# 1...Bg4 2.Q:g4# 1...Nf7 2.B:f7# 1...Bf2/Bg1 2.Ng5# 1...Bf4/Bd2/Bc1 2.Nc5# 1...Bg5/Bc5 2.N:g5#/N