Can they crack your code if they “intercept” your message? Extra: What if the person who intercepts your message knows about Caesar ciphers? Does that make it easier to crack the code?

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 ...

Alongside the mind-boggling brain teaser, he wrote, “Can you still crack the code?” The brain teaser features a lock that can only be opened with a four-digit code.

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 ...