The phrase "enough ambiguity" means having a certain level of uncertainty or vagueness, which is adequate or sufficient for a particular situation. Full definition
The answer, according to many presenters, is to pose them with enough ambiguity to require students to think creatively to problem solve. (hechingerreport.org)
Unfortunately, there is just enough ambiguity to allow for this interpretation. (firstthings.com)
The film takes an interesting perspective on events, one that leaves enough ambiguity to keep viewers on their toes. (iheartthetalkies.com)