Correct answer: O-O1...O-O-O 2.Qc7# 1.Bg3?? (2.Rh8#) 1...O-O-O 2.Qc7# but 1...Nc2+! 1.Bf4?? (2.Rh8#) 1...O-O-O 2.Qc7# but 1...Nc2+! 1.Be5?? (2.R
