No thanks; I'm happy with the job I've got right now. But I appreciate you asking!
More seriously, shouldn't it be possible to post a version thoroughly enough sanitized to avoid giving the game away to your potential applicants, without losing the sense of the original? You don't identify your organization in your HN profile, so it doesn't seem terribly likely anyone who's looking for hints on your hiring process will find it. And, hey, it's entirely possible you'll get feedback which helps improve the question you're actually using in your interviews!
More seriously, shouldn't it be possible to post a version thoroughly enough sanitized to avoid giving the game away to your potential applicants, without losing the sense of the original? You don't identify your organization in your HN profile, so it doesn't seem terribly likely anyone who's looking for hints on your hiring process will find it. And, hey, it's entirely possible you'll get feedback which helps improve the question you're actually using in your interviews!