Not sure why I got downvoted for this. I assume because of the other comment saying that doing this is "cruel" which it isn't. At all. If someone lies and says they know how to develop, can talk about development in depth, but can't actually develop any software that's on them. I've had to fire people who did stupid algorithims and harder interviews after a few months just like the one time that I've done so with my current technique. In all cases, it's been because the person I interviewed lied. In the cases with stupid algo tests they studied how to leetcode, and not how to actually develop software.