George Walker, Benjamin Franklin, William Stopford Kenny (1841). “The chess player: by George Walker; to which are added the three games played at one and the same time by Philidor; sixty openings, mates and situations, by W. S. Kenny, with remarks, anecdotes, &c. &c., and an explanation of the round chess board”, p.7
George Walker, Benjamin Franklin, William Stopford Kenny (1841). “The chess player: by George Walker; to which are added the three games played at one and the same time by Philidor; sixty openings, mates and situations, by W. S. Kenny, with remarks, anecdotes, &c. &c., and an explanation of the round chess board”, p.10
François Danican Philidor, Sir William Jones, Benjamin Franklin (1824). “An Easy Introduction to the Game of Chess: Containing One Hundred Examples of Games and a Great Variety of Critical Situations and Conclusions ; Including the Whole of Philidor's Analysis with Copious Selections from Stamma, the Calabrois, &c”, p.237
a Lady (is Nathaniel Cooke.), Benjamin Franklin (1859). “The A B C of Chess: Being a Concise and Easy Introduction to Chess, with Laws of the Game, Diagrams, &c”, p.48