Note C — Chapter VI · IRREGULAR OPENINGS.
Reading edition
Zukertort's analysis, which filled pages and pages of the Neue Berliner Schachzeitung, considered every conceivable move of White's down to P. to Q. R's 3d, but this one, upon which, in conjunction with the following K. move, Steinitz rested his gambit. 11. P. to B's 3d has been refuted in an elaborate analysis by Mr. Walter Penn Shipley, of Philadelphia.