Correct answer: B:f51...Bf3/Rg2 2.Q:f3# 1...Be4 2.B:c4# 1...Ne5 2.Nf4# 1...Nc5 2.N:b4# 1...c:d3 2.Q:d3# 1...Be5 2.Ne7# 1...Bc5 2.Nc7# 1