Does that make it easier to crack the code? Because there are only 25 possible keys, Caesar ciphers are very vulnerable to a “brute force” attack, where the decoder simply tries each possible ...

Brain teaser: Can you crack the code and find the missing number in the triangle? A popular online math puzzle involves finding a missing number in triangles by using a simple addition rule ...

A new puzzle to solve A recently shared brain teaser has grabbed internet's attention, leaving users puzzled and eager to crack the code. The puzzle, posted on X (formerly Twitter) by the account ...

Test your code-breaking skills and find the perfect combination to open the door in this BBC Bitesize brainteaser.

Put your code-breaking skills to the test and see if you can beat the clock and open the safe in time. Each letter corresponds to a number, but the numbers associated with two of the letters are ...

Imagine a number lock with a three-digit code, and you're given five clues to crack it open. First, one digit is in the correct spot. Second, one digit is right, but it's in the wrong place.