The Schwartz Center for the Performing Arts was shut down on Monday and Tuesday of this week to deal with a mold problem. Because of this, it would be understandable if the actors of this year’s 10-Minute Play Festival were under-rehearsed, or unfamiliar with the space in which they performed, but the opposite was true. At the festival on Thursday night in the newly mold-free building, I was impressed by the range and depth of the productions. None of the plays shy away from hard topics, and I should issue a warning that the second play, Tian, gets heavy, covering sexual abuse and abortion. The festival took place in the Black Box Theatre, a dark room in a sub-basement of the Schwartz Center.