Correct answer: Rf21...Kc2 2.Nc1# 1...Ng4/Ng8/Nh5/Nh7/Ne4/Ne8/Nd5/Nd7 2.Be4# 1...Bc2/c2 2.Rh3# 1...Ba2 2.O-O-O# 1.Ne6?? (2.Nc1#