Heh. I don't claim my method is perfect, but I believe it's reasonably better than hardcore leetcode stuff. FizzBuzz is the kind of problem that doesn't need any preparation to solve for any person who can program. In fact, if I sense that the candidate already knows FizzBuzz too well, I can skip right over it and head over to the open question/toy problem. The candidate could try to bluff me about FizzBuzz, but that's not going to help them at the open question/toy problem. :P