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Rithmomachia (Game), Mathematical recreations--Early works to 1800 Codices, Diagrams, Dialogues, Treatises, Manuscripts Italian--16th century, Manuscripts Renaissance
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Porter, Dot, "Facsimile of LJS 232, Trattato delle proportioni et proportionalità" (2015). Schoenberg Institute for Manuscript Studies (SIMS): EBooks. 174.
Treatise by Benedetto Varchi on proportion as the basis for rithmomachia, a mathematical game played on a chessboard with pieces that each have a shape and a number; a dialogue written by Carlo di Ruberto Strozzi, in which Cosimo Rucellai, who introduced the game to Benedetto Varchi, teaches the rules to Strozzi and Jacopo di Piero Vettori; and other notes on the game. Later unrelated notes and pen trials on leaves before and after main texts. Damage and bleed-through due to oxidation on many leaves.