I have to assume you are doing some kind of very strict resume screening or your application form is behind a puzzle or something - I 100% guarantee if you post your job broadly and interview everyone who applies you will have a very bad fizz buzz rate (and probably go insane), and I believe that if you do filter but try to keep an open mind to non-traditional backgrounds you will have a pretty significant fizz buzz fail rate. (I too oversee the screening of hundreds of candidates out of thousands of applicants.)