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 113
Either to move and win a piece. 90 MAJOR TACTICS. Figure 77. (/) Black: … White.Either to move and win a piece. BASIC PROPOSITIONS. 91 PEOPOSITION II. — Theorem. Given a Geometric Symbol Negative (G. S. N.) hav-ing two or more Points Material Active (P. M. A.), thenthe kindred Prime Tactical Factor (P. T. F.) wins anadverse piece.
Chess
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