The Great Detective Challenge
Riddles and brain teasers to test your mind, complete interactive PDF cases, full answer keys, and a bonus online experience where you solve cases inspired by Sherlock Holmes.
A carefully selected collection of logic puzzles, deductive reasoning challenges, classic brain teasers, and riddles designed to challenge any mind, from beginner to experienced solver.
35 interactive PDF cases. Clues are revealed step by step in sections built so you can deduce the answer before checking the solution.
Access the online version of all 35 cases: reveal clues with a click, move through the cases like a book, and track your progress right in the browser. No installation required.
In addition to the PDFs, you receive access to the online Sherlock Holmes cases. Browse them like an old book, reveal clues as you go, and enjoy an experience optimized for phones, tablets, and computers.
I liked that this is not just a random file dropped on a page. The cases have order, the clues arrive at the right moment, and you want to keep going until you close one more mystery.
My favorite cases were the ones where the answer depends on noticing one small detail. They are genuinely challenging without feeling dragged out or forced.
It worked really well as a weekend activity at home. We read together, discussed the clues, and only then checked the answer. It was better than I expected.
Pay once and keep it forever: all PDFs plus the interactive online version. No subscription and no renewal.
If for any reason you are not satisfied with the content during the first 7 days after purchase, just send us a message and we will refund 100% of your money. No questions and no hassle. The risk is ours.