Marcel Duchamp, Chess Master
"He achieved the status of chess master and, with the help of tactician Vitaly Halberstadt, even wrote a book on, yes, endgame strategy. It got a title similar to the names of his gnomic artworks: Opposition and Sister Squares are Reconciled
. Retroactively, at least, his newfound passion conferred a depth and intensity of thought upon all those throwaway Dadaist sculptures."