Changes

* [https://hyperallergic.com/424124/marcel-duchamp-john-cage-reunion-chess-toronto/ 50 Years Ago Today, Marcel Duchamp and John Cage Played Chess] by [https://hyperallergic.com/author/elena-goukassian/ Elena Goukassian], March 5, 2018 » [[:Category:Marcel Duchamp|Marcel Duchamp]]* [http://www.openculture.com/2017/09/when-john-cage-marcel-duchamp-played-chess-on-a-chessboard-that-turned-chess-moves-into-electronic-music-1968.html When John Cage & Marcel Duchamp Played Chess on a Chessboard That Turned Chess Moves Into Electronic Music (1968) | Open Culture] » [[:Category:Marcel Duchamp|Marcel Duchamp]]