Editing Luca Pacioli (section)

==Chess==
Around 1500, Pacioli wrote an unpublished treatise on [[chess]], ''[[De ludo scachorum]]'' (''On the Game of Chess''). Long thought to have been lost, a surviving [[manuscript]] was rediscovered in 2006, in the 22,000-volume library of Count Guglielmo Coronini-Cronberg in [[Gorizia]]. A facsimile edition of the book was published in Pacioli's home town of Sansepolcro in 2008. Based on Leonardo da Vinci's long association with the author and his having illustrated ''Divina proportione'', some scholars speculate that Leonardo either drew the [[chess problem]]s that appear in the manuscript or at least designed the chess pieces used in the problems.<ref>[https://web.archive.org/web/20080509143211/http://www.timesonline.co.uk/tol/life_and_style/court_and_social/article3523718.ece Times Online: Renaissance chess master and the Da Vinci decode mystery]</ref><ref>{{Cite web|url=http://www.iht.com/articles/ap/2008/03/14/europe/EU-GEN-Italy-Da-Vinci-Chess-Code.php|title=International Herald Tribune: Experts link Leonardo da Vinci to chess puzzles in long-lost Renaissance treatise}}</ref><ref>{{Cite web|url=http://www.winnipegfreepress.com/life/story/4150848p-4739893c.html|title=Winnipeg Free Press: Chess}}</ref><ref>{{Cite web|url=https://usatoday30.usatoday.com/tech/science/discoveries/2008-03-14-leondardo-chess-puzzles_N.htm|title=Experts link Leonardo da Vinci to chess puzzles - USATODAY.com|website=usatoday30.usatoday.com}}</ref>