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 62
miHe. Note. — A Disturbing Factor may or may not be situ-ated within the zone of evolution. PLANE TOPOGRAPHY. 39 The Primary Origin is that point which, at thebeginning of an evolution, is occupied by the PrimeTactical Factor. THE PRIMAEY ORIGIN, (P. 0.) Figure 33. Blach. … White. Note. — The point A is the Primary Origin in thisevolution, as it is the original post of the Prime Tactical■Factor. 40 MAJOR TACTICS. The Supporting Origin is the point occupied by theSupporting Factor at the beginning of an evolution. THE SUPPORTING OEIGm. (P. S.) Figure 34. Black.
Chess
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