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 32
e. PRINCIPLE. Given a Rooks quadrilateral, one of whose sides isoccupied by two or more adverse pieces; or two or moreof whose sides are occupied by one or more adversepieces; then the Rook may make a gain in adversematerial. GEOMETRIC SYMBOLS. 9 That geometric symbol which is a prime factor in… … White. Note. — This figure is composed of a rectangle, aminor triangle, a major triangle, and a quadrilateral, andshows that the Queen combines the offensive powersof the Pawn, the Bishop, the Rook and the King.PRINCIPLE. Given one or more adverse pieces situated at thevertices or on the. sides of…
Chess
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