Generally, interview puzzles have almost zero applicability to real world work. It's similar to many colleges: the hardest part is getting in. One coding test involved a math formula I hadn't seen in 20+ years. It was simple, but if you "forgot" that, you were stuck.

You're better off giving someone a more realistic take home test and have them walk you through it during the interview. You'd get a better feel for what their "real" code looks like when they're under less pressure, how they communicate while presenting their solution, etc.