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 63
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. … White. Note. — The point A is the Supporting Origin in thisevolution, as it is the original post of the SupportingFactor. PLANE TOPOGRAPHY 41 The Auxiliary Origin is the point occupied by theAuxiliary Factor at the beginning of an evolution. A POINT AUXILIAKY.(P. A.) Figure 35. Black.
Chess
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