Though they were finished over five years ago, 91 year old German artist Gerhard Richter’s ‘final paintings’ from 2016-17 at David Zwirner Gallery feel current; together with smaller-scale work on paper, the paintings have been a ‘must-see’ since opening in mid-March. Richter’s muscular painting process involved scraping layers of paint from the surface of his paintings with a large self-designed squeegee. Never sure of what his technique would yield, Richter surrendered at least part of a painting’s outcome to chance; the resulting images embody movement, resisting the static quality of a finished piece. (On view in Chelsea through April 29th).