7423X1 Reprint Edition. Cornerstone Library, New York: 1974. 190 pages. Softcover. Reading copy. After the first few opening moves what do you do, how do you do it, when do you do it? The answers are found in this books, the work of one of the world's leading chess authorities, a 3-time U. S. Open Champion. Contains 143 diagrams. $11.00USD
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