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 134
n a pawn. BASIC PROPOSITIONS. Ill PEOPOSITION VI. Theorem. Given a Square of Progression Positive (S. P. P.)whose net area is greater by not more than one hori-zontal tlian the net area of the adverse Square of Pro-gression Negative (S. P. N.), then, if the Primary Origins(P. 0.) are situated… … White. White to move, both to queen a pawn. 112 MAJOR TACTICS. PEOPOSITION VII. Theorem. Given a Square of Progression Positive (S. P. P.)whose net area is less by one horizontal than the netarea of the adverse Square of Progression Negative(S. P. N.), then, if the Primary Origins (P. 0.) are…
Chess
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