The ultimate word search puzzle for developers: 404: Not Found. This isn’t your average name search. This is a tribute to every time you’ve shouted “WHY isn’t this working?!” at your terminal.

Your mission is simple in theory: locate the name hidden in a digital maze of characters. It could be going forward, backward, diagonally, maybe even backwards-in-a-stack-trace. No hints, no color coding, no debugger, just raw mental parsing.

Choose your difficulty: want a challenge? Pick a version where the name is hidden once per page. Feeling brave (or reckless)? Try the version where it appears only once in the entire book. This is the grep test you never trained for.

Why devs love 404: Not Found:

• A perfect brain teaser for coders, techies, and puzzle-loving engineers.
• Makes for a great conversation piece on your desk, coffee table, or in your GitHub README.
• The ultimate gift for that colleague who claims they “love a good regex.”

If you’ve ever scrolled endlessly through logs, stared at minified code, or raged at a broken build, this book is for you. The hunt begins now.