The major tactics of chess: a treatise on evolutions; the proper employment of the forces in strategic, tactical, and logistic planes (1898)
Young, Franklin Knowles, 1857- · Boston, Little, Brown and company · leaf 65
40 MAJOR TACTICS. The Supporting Origin is the point occupied by the Supporting Factor at the beginning of an evolution. THE SUPPORTING ORIGIN. (P. S.) FIGURE 34. Black. … White. NOTE. — The point A is the Supporting Origin in this evolution, as it is the original post of the Supporting Factor.
Chess
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