Correct answer: O-O-O1...K:g1 2.O-O-O# 1...Nh6/Nf2/Nf6/N:e3/Ne5 2.Q:h2# 1...Rh3/Rh4/Rh5/Rh6/Rh7/Rh8 2.Q:g2# 1.Ra2?? zz 1...N