Authors- Nick de Firmian; Walter Modern Korn
Current Edition- 14th
Number of Pages- 752
Publisher- McKay Chess
Year Published- 1999
Since it was first published over a half-century ago, MCO has been one of the most trusted books in the chess world. It is the world's most current and comprehensive one-volume reference work on the chess openings. In its 14th edition, it has been completely revised to reflect the changes and advances made in chess over the past couple of years, including major tournament matches and published theoretical works.