Marcel Duchamp the Broken Arm", followed soon after. His "Fountain", a urinal signed with the pseudonym "R. Mutt", shocked the art world in 1917. "Fountain" was selected in 2004 as "the most influential artwork of the 20th century" by 500 renowned artists and historians. In 1919, Duchamp made a parody of the "Mona Lisa" by adorning a cheap reproduction of the painting with a mustache and goatee. To this he added the inscription "L.H.O.O.Q.", a phonetic game which, when read out loud in French quickly sounds like ""Elle a chaud au cul"". This can be translated as "She has a hot ass,"
Marcel Duchamp of Rrose Sélavy, entitled, "Poils et coups de pieds en tous genres". In 1918, Duchamp took leave of the New York art scene, interrupting his work on the "Large Glass", and went to Buenos Aires, where he remained for nine months and often played chess. He carved his own chess set from wood with help from a local craftsman who made the knights. He moved to Paris in 1919, and then back to the United States in 1920. Upon his return to Paris in 1923, Duchamp was, in essence, no longer a practicing artist. Instead, his main interest was chess,