Chess Openings: The Complete Manual with Theory, Fundamentals and Strategies for Beginners. Build Your Repertoire with Explained White (Paperback)

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Modern Chess Openings, 6th Edition by under the editorship of R.C. Griffith & P.W. Sergeant; with a new intrroduction by Sam Sloan Griffith and J.H. White; completely revised by Reuben Fine

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This is a page from the book, Modern Chess Openings. How do I read and fully utilize these information? I cannot decipher how to use the table below. Thank you 🙂

Chess Openings and Book Moves for Nintendo Switch - Nintendo