Builder & CipherRift
Hey Cipher, ever wondered how to make a lock that's as sturdy as a wall but as tricky as a maze? I reckon the math behind a secure frame could give us a neat puzzle to crack.
A wall that’s also a maze is a matrix of clues.
Start with a grid of prime numbers, let the edges be guardrails, and let each step flip a bit like a labyrinth.
The lock sits in the centre of that matrix—only when the path is followed in the exact order does the centre reveal its key.