Young, Franklin Knowles, 1857- [from old catalog] · Boston, Little, Brown, and company · leaf 148
R 2, Q B 4, and K 6 ; for the Bishop, the diagonal isformed by the white points, K 4, Q B 6, and Q Kt 7. STRATEGIC HORIZONS. 117 A strategic horizon 7 is expressed by a diagonalcomposed of three adjacent points, the extremities beingeither tactical keys or points of command appertain-ing to the B,… … White. 118 CHESS STRATEGETICS. A strategic horizon 8 is expressed by the geometricsymbol of the Rook. Its sides are right lines, theangle is the strategic key, and the extremities are eithertactical keys or points of command in evolutions whichappertain to the R or Q. It is designated by the…
Chess
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