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 30
White. PRINCIPLE. Given a Knights octagon, the vertices of which areoccupied ly one or more adverse pieces, then the Knightmay make a gain in adverse material. GEOMETRIC SYMBOLS. 7 The geometric symbol which is the prime factor in allevolutions which contemplate the action of a Bishop isshown in… … White. PEINCIPLE. Given a Bishops triangle, tlie vertices of which areoccupied by one or more adverse pieces, then the Bishopmay make a gain in adverse material. 8 MAJOR TACTICS That geometric symbol which is a prime factor inall evolutions which contemplate the action of a Rookis shown in Fig. 4.…
Chess
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