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
White. Note. — The Point A is the Auxiliary Origin in thisevolution, as it is the original post of the AuxiliaryFactor. 42 MAJOR TACTICS. The Point Material is that point which is occupied bythe adverse piece which, in a given evolution, it isproposed to capture. poijSts material. (P. M.) Figure… … Note. — A Point Material always is situated eitherat one of the vertices or upon one of the sides of thezone of evolution. PLANE TOPOGRAPHY. 43 A Point of Interference is that point which is oc-cupied by the Disturbing Integer. A POINT OF INTERFERENCE. (P. I-) FionRB 37. Blaclc.
Chess
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