Young, Franklin Knowles, 1857- [from old catalog] · Boston, Little, Brown, and company · leaf 50
erein such lines of communication,do not exist it is impossible for them to give eachother such support. Hence, to the student, whether of mathematics, ofwar, or of chess, it is evident that the following is trueand valid; FIRST LAW OF THE ART OF CHESSPLAY. Whenever tivo undefended kindred pieces… … White. Note. — Both of the White Knights are isolated fromeach other and are simultaneously attacked by theBlack Queen. No line of communication existing, oneof the attacked pieces is lost. It also will be readily apparent to the student thatalthough a line of communication exists, but is…
Chess
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