William Wu has quite a large collection of tech-interview style riddles and puzzles.
This is an archive of problems I’ve been collecting since the Spring of 2002. They come from many places, including word of mouth, college courses, books, and job interviews for hi-tech positions. Many are even written by members of our own forum community. These carefully chosen puzzles will demand you to think in creative ways you perhaps normally would not. In fact, some will seem outright impossible at first … but once you crack them, the epiphany can be truly rapturous!
Hello,
I’ve been trying to access your website (wu riddles) for the past weeks but couldn’t. Is it down or have you changed the address?
Sincerely,
BenVitale
It’s not my site, so I have no idea what’s happened to it.
it has been placed there, you can check the following link
http://wuriddles.com/
Link updated. Thanks!