Correct answer: O-O1.Qg2+?? 1...Kb1/Kc1/Ka1 2.O-O# but 1...Nd2! 1.Qc:c4?? zz 1...Ka1 2.Qc1#/Qa2# but 1...Kb1! 1.Qh2+?? 1...Kb1/Kc1
