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 91
White. 68 MAJOR TACTICS. A Point of Junction is that point at which an extremityof a pawn altitude intersects the logistic horizon, i. e. thequeening point of a given pawn. A POINT OF JUNCTION. (P. J.) Figure 58. Black. … White. LOGISTIC PLANES. 69 Tlie Square of Progression is that part of the logisticPlane of which the pawns vertical is one side and whosearea is the square of the pawns altitude. A SQUAEE OF PEOGEESSION.(S. P.) PiGUEE 59. Black.
Chess
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