Correct answer: O-O-O1...Nf2/Nf6/Ng3/Ng5/Nd2/Nd6/Nc3/Nc5 2.Qc3# 1...a3 2.Rb1# 1.Nf4?? (2.Nd3#/Nd5#) 1...Nf2/Nc5 2.Nd5# 1.