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 273
248 MAJOR TACTICS. EVOLUTION No. 125. FIGURE 229. Bishop and Supporting Factor vs. Objective Plane of Three Radius Black. … NOTE. — The Front Offensive is a diagonal ; the radius is composed of two like points, contained in the same side of the adverse Bishop's triangle, and one unlike point contained in the perimeter of the supporting Factor. The Point of Command is a like point.
Chess
Internet Archive · University of California Libraries · Public domain (published before 1931). Free to use for anything.
