Unanswered Questions

I was watching a YouTube video and it’s filled with secret messages and codes. The last two codes were in binary and inserting them into a translator provided correct answers. However, that's not ...

Searching online catalogs is a pain. Can you tell me if it's worth my trouble? As an example, I searched the following online catalog of a well-known country-wide British outlet for the keyword "...

I have two gears with different numbers of teeth (20 and 10): The small gear makes two turnovers, while the large gear makes one turnover only. My idea is to use a large gear as an alphabet wheel (...

Background. I'm specifically interested in how to design a puzzles chain for a team (8-10 teenages). We are going to play at a Scientific Museum. The main the idea is to find a key and open a lock. ...

The goal of Hidato is to fill the grid with a series of consecutive numbers adjacent to each other orthogonally or diagonally, and all tiles are required to be filled in. So, as you may or may not ...

I'm starting to create a puzzle, but I'm going to need a cipher that will be impossible (or at least very difficult) to crack, but can be easily decoded with a key. I first looked at the one-time pad ...