books.google.es - In the fateful year of 1913, events in New York and Paris launched a great public rivalry between the two most consequential artists of the twentieth century, Pablo Picasso and Marcel Duchamp. The New York Armory Show art exhibition unveiled Duchamp's Nude Descending a Staircase, a "sensation of sensations"...http://books.google.es/books/about/Picasso_and_the_Chess_Player.html?id=6xkkSVZz_OYC&utm_source=gb-gplus-sharePicasso and the Chess Player