I was curious about the parent commenter's approach with the sorts of questions they ask as they are more open-ended, but also somewhat knowledge-gated. I was interested in any potentially unique techniques they employ. However, I was not looking to specifically fix anything with how I conduct my interviews.

My first question is a very specific coding question and it's a weed-out question. So if someone doesn't figure it out, they've been weeded out, simple as that. I ensure that candidates don't waste time figuring out nit-picky edge-cases and give appropriate hints when they're utterly stuck, but the question does its job very well.