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Title: BCO2 is getting long in the tooth
Review: BCO2 was published in 1989 and the latest references are from the late 1980's. Opening theory has come a long way since then which makes this book of limited usefulness in 1998. Unfortunately, BCO3 and MCO14 are not even rumored yet, leaving an up-to-date single-source reference unavailable to tournament players. If you must have a copy of this book, try not to pay too much for it.
