Correct answer: Qc31...Bf2/Bg1/Bd4 2.Q:f3# 1...B:f4/Bd2/Bc1 2.Q:f3#/Qc5# 1...Bc5 2.Q:c5# 1...Nb4/Nc1/Nc3 2.Nc3# 1...Ng3/Ng7