Correct answer: Kh31...K:f4 2.Q:f6# 1...Nd6 2.Q:d6# 1...Ne7 2.Qb8# 1...Nb6/Na7 2.Qb8#/Qd6# 1...Ng4/Ng8/Nh5/Nh7/Ne8/Nd5/Nd7
