Correct answer: Bf31...e3 2.Bf3# 1...Nc4/Nd1/Na4 2.B:c4# 1...g5 2.Rd6# 1.B:b2?? (2.Bc4#) but 1...R:b2! 1.Rg1?? (2.Rg5#) 1...Nc4 2.B:c4#