Richard Tuttle celebrates fifty years of art making with a show of work from his last 26 New York solo shows. ‘Titel 3’ from 1978 typifies Tuttle’s sometimes ephemeral arrangements; a washy drip of brown watercolor on the wall interacts with a crisp, green arch of paper, creating a succinct contrast between chance and deliberate gestures. (At Pace Gallery’s 25th Street location through June 11th)