Correct answer: K:d21...a2/Ra2 2.Bc2# 1...Ng4/Ng8/Nh5/Nh7/Ne4/Ne8/Nd7 2.Qe4# 1...Nd5 2.Qh7# 1...Rd5/Re5/Rf5/Rg5/Rh5 2.B