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 142
]V?ii/e. White to move and queen a pawn. BASIC PROPOSITIONS. 119 PROPOSITION X. —Theorem. Given a Square of Progression Positive (S. P. P.)opposed to a Rooks quadrilateral or to a Queens poly-gon, then, if the square of progression is the smallestpossible, and if the hostile integer does not… … White.White to move and queen a pawn. 120 MAJOR TACTICS. Figure 101. ib.)Slack.
Chess
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